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Kako shvatiti što nije u redu s vašom peći

Kako shvatiti što nije u redu s vašom peći

Kako peć radi i kako se sama uključuje i isključuje

Često je najbolji način da shvatite što s nečim nije u redu jest znati kako to treba raditi. Ako znate slijed operacija, možete odrediti gdje se slijed remeti. Vaša peć nije iznimka od pravila.

Kada termostat aktivira vašu peć, postoji rima i razlog za postupak koji slijedi za sigurno uključivanje. Sljedeći put kad se vaša peć ne odazove pozivu, moći ćete vidjeti gdje je problem i možete odlučiti je li to u vašim vještinama i resursima da je popravite ili vam je potreban profesionalni HVAC tehničar za rukovanje pitanje za vas.

Sljedeća rasprava može vam uštedjeti vrijeme i novac, bez obzira jeste li sami riješili problem ili na kraju pokazali problem svom serviseru.

Nalog za paljenje: koraci u radu moderne prisilne peći

Kada termostat traži toplinu, peć prelazi u akciju, prolazeći kroz korake i dijelove ispod. Mnoge od ovih komponenti možete vidjeti u videu.

  1. Termostat govori peći da se uključi.
  2. Pokreće se induktorski motor.
  3. Tlačna sklopka potvrđuje pravilno odzračivanje dimnjaka.
  4. Modul za paljenje s vrućom površinom (ako ga imate, a ne upaljač ili pilot) počinje svijetliti.
  5. Ventil za plin se otvara i plin se pali od izvora paljenja.
  6. Osjetnik plamena provjerava je li plin upaljen.
  7. Prekidač visoke granice doseže zadanu temperaturu.
  8. Uključuje se motor puhala.
  9. Peć radi dok se termostat ne zadovolji i kaže mu da se isključi.
  10. Ventil za plin se zatvara.
  11. Prekidač visoke granice doseže postavku niske temperature.
  12. Ventilator se isključuje.

Novija peć može imati još više zvona i zvižduka; stara peć može imati samo minimum, plinski ventil i termoelement (poput staromodnog senzora plamena). Termoelement ili senzor plamena ispituje je li pilot upaljen i zaustavlja otvaranje glavnog ventila za plin ako nije. Naravno, slomljeni termoelement također može zaustaviti otvaranje ventila za plin.

Termostat

Termostat je mjesto gdje sve počinje. Termostat je zapravo samo skup prekidača koji se otvaraju i zatvaraju ovisno o temperaturi, omogućujući protok snage u određene krugove u sustavu grijanja i hlađenja. Zamislite ih kao pokretne mostove koji se njišu gore-dolje. Obično su sastavljeni, ali se mogu spustiti kako bi zatvorili most i omogućili prolazak snage.

Kad temperatura u vašem domu padne, termostat spušta most, šaljući energiju u peć dajući joj do znanja da je potrebna toplina. Kako sobna temperatura ponovno raste, termostat podiže most i isključuje napajanje. Za klimatizaciju, termostat djeluje na isti način, ali u zrcalnoj slici, zatvarajući most kada se kuća previše zagrije.

Ako je temperatura u kući niža od temperature na koju ste postavili termostat, vaš termostat možda neće funkcionirati kako bi trebao. To možete testirati preskakanjem (dodirivanjem) crvene i bijele žice na svoj termostat. Ako se peć uključi, vrlo je vjerojatno problem vaš termostat.

Što rade žice u termostatu?

Ostale boje žica u kućnom sustavu mogu biti za napredne funkcije ili buduću upotrebu.

Boja žiceŠto kontrolira

Crvena

Crvena je za moć. To nosi snagu od 24 volta, koju napaja peć. Ova snaga čeka na "mostu" dok joj se ne kaže kamo ići.

Bijela

Bijela je za toplinu. Kada se most (prekidač) između crvene i bijele žice zatvori, termostat poziva na toplinu.

Žuta boja

Žuta je za hlađenje. Kada se most (prekidač) između crvene i žute žice zatvori, termostat poziva na hlađenje.

Zelena

Zelena je za obožavatelje. Kad se most između crvene i zelene zatvori, radi samo ventilator. Ne zahtijeva se grijanje ili hlađenje.

Plava

Plava je varalica ili wild card. Može se koristiti za napajanje zaslona ili za napredne značajke. No obično je zamotan natrag u zid i uopće se ne koristi.

Motor i ventilator induktora

Induktorski motor i ventilator guraju ispuh prema dimnjaku, rješavajući se ugljičnog monoksida (CO). Stariji se sustavi oslanjali isključivo na "prirodni propuh" za odzračivanje tih plinova, ali induktori su izvrstan dodatak sustavu peći. Produljuju vijek trajanja dimnjaka, a kada se koriste s tlačnim sklopkama pomažu u sprečavanju trovanja CO.

Kviz

Za svako pitanje odaberite najbolji odgovor. Ključ za odgovor nalazi se u nastavku.

  1. Koliko ljudi svake godine ozlijedi od CO?
    • 2,500
    • 10,000
    • 50,000
    • 100,000
  2. Koliko ljudi svake godine umre od CO?
    • 250
    • 750
    • 1,000
    • 1,500

Kljucni odgovor

  1. 10,000
  2. 1,500

Prekidači pritiska

Funkcija tlačne sklopke je provjeriti da li indukcijski motor zapravo potiskuje zrak prema dimnjaku. Ako je dimnjak blokiran, na primjer ptičjim gnijezdom, tlačna sklopka isključuje sustav kako bi se eliminirao rizik od ulaska CO u dom. Naravno, tlačna sklopka također se može isključiti ako je motor star i radi presporo da bi udovoljio prekidaču ili je crijevo od ventilatora do prekidača stegnuto ili slomljeno ili je sam prekidač loš.

Ignitor vruće površine

Opet, prilično jednostavan uređaj u složenom sustavu. Upaljač s vrućom površinom koristi električnu energiju za zagrijavanje vrlo krhkog keramičkog elementa, izgleda poput ugljena, na tako visoku temperaturu da prirodni plin ili propan plane u plamenu dok prolazi. Paljenje s vrućom površinom nalazi se na otvoru na prvom otvoru plamenika, kako bi se plin odmah zapalio kad je uveden u otvor. To sprječava nakupljanje neizgorjelog plina u jedinici.

Neke peći koriste ono što se naziva paljenje iskrom. Umjesto usijane površine, upaljač s iskrom stvara niz iskri za paljenje plina.

Nije važno imate li u peći vruću površinu ili elektroničko paljenje; važno je da izbjegavate koristiti pilot svjetlo. Pilot svjetla otpadni plin; tijekom sezone grijanja neprestano sagorijevaju plin, a neki ih puštaju tijekom cijele godine.

Želite li uštedjeti nekoliko dolara? Obavezno isključite pilot na peći kada se ne koristi u sezoni. Samo budite sigurni da ga znate osvijetliti sljedeće godine prije nego što to učinite.

Ventil za plin

Plinski ventil je u osnovi elektronički kontroliran ulaz. Kada jedinica zahtijeva toplinu, a pločica potvrdi da su ispunjeni pravi uvjeti, jedinica prenosi energiju na ventil, što uzrokuje njegovo otvaranje i ispuštanje plina koji paljenje ili pilot započinje. Kad se toplinski ciklus završi, energija ventila se prekida i ventil se ponovno zatvara, prekidajući dovod plina u plamenike.

Osjetnik plamena

Senzor plamena vrlo je jednostavan, ali vlasnicima domova stvara puno problema. Njegov je jedini posao provjeriti je li plin upaljen osjetljivanjem vrućine. Ako nema topline, on isključuje plin, kako bi se izbjeglo opasno nakupljanje plina u jedinici. Senzor plamena jednostavno je popraviti kada se pokvari ili mu treba samo TLC.

Napisao sam jednostavan korak-po-korak vodič za ljude koji trebaju očistiti svoj senzor plamena peći. Pogledajte - puno se problema može riješiti jednostavnim čišćenjem senzora plamena.

Video: Čišćenje senzora plamena

Prekidač visoke granice

Prekidač visoke granice služi u nekoliko svrha. Prvo, sprečava uključivanje ventilatora peći dok ne utvrdi da je postignuta zadana temperatura. U suprotnom, ventilator bi se uključio prerano i puhao hladan zrak u kuću svaki put kada termostat traži toplinu.

Drugo, puhalu također govori koliko dugo treba nastaviti raditi prije isključivanja, nakon što se zadovolji termostat. Inače, vrući zrak koji ostaje u kanalu i izmjenjivaču topline, nakon što se peć prekine, jednostavno bi otišao u otpad.

Na kraju, granični prekidač isključit će jedinicu ako izmjenjivač topline dosegne određenu visoku temperaturu, kako bi se spriječilo opasno pregrijavanje.

Ventilator i motor puhala

Ah, napokon. Toplina za sve nas. Sad kad su svi senzori zadovoljni, a granična sklopka puhalu kaže da je zrak dovoljno topao da ga pošalje u životni prostor, pokrenut će protok zraka.

Puhalo naše peći obično koristi 120 volti i gura od 800 do 2000 kubičnih stopa u minuti (cfm). Većina puhača zahtijeva upotrebu kondenzatora i imaju pogon od pola inča koji se prikvači izravno na ventilator, osim ako nemate motor s remenom.

Tid-bit: U slučaju kvara ili prekida napajanja jedinice, puhalo je uobičajeno da se uključi i radi određeno vrijeme. To je možda zato što ima previše vrućine i traži se hlađenje ili može doći do nakupljanja „loših plinova” koje ventilator mora istisnuti ili raspršiti.

Prekidač za izvođenje

Uštedite vrijeme i novac poznavanjem svoje peći

Nadam se da vam je ovo pomoglo da malo bolje razumijete svoj sustav grijanja. Evo nekoliko ideja za rješavanje problema koje uključuju dijelove o kojima ste upravo pročitali, a evo još nekoliko savjeta za dijelove.

  • U slučaju kvara, peć će se obično pokušati ponovno pokrenuti tri puta. Ako u trećem pokušaju ne može postići uspješno paljenje, preći će u način zaključavanja određeno vrijeme, obično sat vremena. Resetiranje napajanja (isključivanje i uključivanje) obično će resetirati ploču i omogućiti jedinici da vam pokaže što se događa u slučaju da ste je propustili.
  • Trepćuće svjetlo u jedinici nije božićni ukras ili mali disko u vašoj peći. Ovo svjetlo trepće svojevrsnim Morseovim kodom koji vas može dovesti do problema ili kaže "Hej, ovdje je sve u redu." Pogledajte unutar i izvan jedinice. Vjerojatno postoji kodni grafikon koji će vam reći što znači točka, točka, crtica, crtica koje vidite.
  • Neki neugodni zvukovi koje stvara vaša kućna peć mogu biti jednostavni i jeftini za smirivanje.
  • Pazite na svoju peć i ona će se vjerojatno brinuti o vama. Ali ako ne očistite jedinicu i promijenite filtar kako biste trebali, peć se može pokvariti ili razbiti banku.

Pitanja i odgovori

Pitanje: U čemu bi mogao biti problem kada se grijač isključi i ponovno pokrene nekoliko sati kasnije?

Odgovor: Problem može biti puno stvari. Ova "blokada" u koju peć ulazi zadana je nakon 3 uzastopna kvara. Nažalost, to mi ne govori koji je neuspjeh.

Pitanje: Je li tehničar sinoć izašao i promijenio neke stvari, a sada izmjenjivač topline svijetli?

Odgovor: Jeste li sigurni da je to izmjenjivač topline? Radije sumnjam da postaje dovoljno vruće da svijetli bez aktiviranja hi-limit prekidača.

Pitanje: Peć kruži i radi u redu, ali puhalo se ne isključuje i nastavlja puhati hladan zrak. Što da radim?

Odgovor: Čini se kao da žica termostata, obično zelena, nekako dodiruje drugu žicu, vjerojatno crvenu, i održava ventilator punim radom. Ili je vaš stat postavljen na "fan" umjesto na "auto". To su moja početna nagađanja izdaleka. Teoriju žica možete testirati uklanjanjem zelene stat žice s upravljačke ploče u peći, a zatim pustite da peć radi još jedan ciklus i provjerite hoće li se isključiti. To bi vam barem reklo je li problem na strani žice / termostata ili na strani peći. Ako se isključi, na stat / žici je. Ako nije, problem je u peći.

Pitanje: Moja se plinska peć uključuje na 4 ° ispod zadate temperature na termostatu. Je li ovo problem s termostatom?

Odgovor: Ako je oduvijek bilo tako, možda je to samo stari statut i više nije vrlo točan pa ćete ga možda htjeti zamijeniti. Ako nije, a vaš je statist noviji, onda je neispravan i trebali bi vam dati novi.

Pitanje: Imam Payneovu peć, a indukcijski motor i ventilator stalno rade. Moja vrućina se neće pokretati, a LED kôd kaže da se prekidač tlaka nije otvorio. Provjerio sam crijevo i tamo nema problema. Trebam li pokušati zamijeniti tlačni prekidač svoje peći?

Odgovor: Zvuči kao da je možda prekidač loš pa da. Budući da je jeftino, barem bih ga isprobao, a ako ne uspije, možda nazovite tehničaru, ali ako uspije, možete vam uštedjeti puno novca.

Pitanje: Moja 2-fazna peć Goodman 96% normalno se pokreće rano ujutro kada termostat prvi put zahtijeva toplinu. Nakon nekoliko minuta zagrijavanja, peć se isključuje kao da je poziv termostata zadovoljen. Međutim, sustav odmah nastavlja ciklus pokretanja i nastavlja se zagrijavati još nekoliko minuta dok poziv termostata uistinu ne bude zadovoljen. Čini li se ovo problem s prekidačem visoke granice?

Odgovor: Mislim da nije. Mislim da je to vaša peć koja se prebacuje s 1. na 2. fazu. Ovo je možda normalna funkcija i uopće nije problem.

Pitanje: Zašto moja peć radi pravilno samo s isključenim donjim vratima za propuh?

Odgovor: Više nego vjerojatno znači da jedinica nema dovoljno povratnog zraka. Možda su kanali premali ili jedinica prevelika. (Što znači da je ventilator presnažan za kanal) Možda bi ventilator mogao biti postavljen na nižu brzinu, ali morate paziti da nije prespor ili možete zamijeniti jedan problem za drugi, a morat ćete se obratiti tehničaru Naravno. Nažalost, tu odluku moram objasniti mnogo.

Pitanje: Što bi uzrokovalo da puhalo radi u uključenom načinu, ali ne i u automatskom?

Odgovor: Puhalica će se uključiti samo ako postoji poziv za grijanje / hlađenje u "automatskom" načinu rada. Način rada "ventilator" uključuje ventilator sam po sebi, ali i dalje omogućuje grijanje i hlađenje da rade normalno. Ako se ne uključuje u režimu grijanja / hlađenja "auto", onda vjerujem da neki moraju pogriješiti na statici ili ploči.

Pitanje: Imam Goodmanovu peć i radi u redu dok držim termostat na 80 i više, ali ako ga okrenem na niži od 80, ventil za plin se neće otvoriti. Možeš li mi pomoći?

Odgovor: Zvuči kao da bi stat mogao biti vaš problem. Ne mogu se sjetiti bilo kojeg drugog razloga koji bi se dogodio.

Pitanje: Peć krene dalje. Početna temperatura doseže željenu temp. Tada se plamenici isključe, ali puhalo nastavlja puhati. Puhalo se obično isključi nakon otprilike 100 sekundi, ali povremeno će i dalje puhati, a jedini način isključivanja je kutija s osiguračima. Može li to biti prekidač iznad plamenika ili prekidač uz puhalicu?

Odgovor: Puhalo to obično čini samo kad postoji kvar. Ako u posljednje vrijeme nisu napravljene nikakve greške i nijedna promjena, možda ploča ide loše i došlo je do kratkog spoja zbog kojeg puhalo neprestano radi. Ne mogu to sa sigurnošću reći, ali ovo je ono što bih gledao.

Pitanje: Koliko godina traju granične sklopke i termoparovi na peći?

Odgovor: Životni vijek mehaničkih dijelova bilo koje vrste uvelike će se razlikovati o puno različitih stvari. Mogu samo reći da im je namijenjeno trajanje jamstva. Tako tvrtke oblikuju većinu uvjeta svojih jamstava, na temelju očekivanog životnog vijeka. Ako znate koliko je jamstvo na vaše dijelove, imate prilično dobru predodžbu o njihovom očekivanom vijeku trajanja. Sve u svemu, ako dio kontinuirano propada, onda ili proizvođač ima kvar ili postoji osnovni razlog zbog kojeg dio i dalje propada i morat ćete to shvatiti. Obično je ovo drugo.

Pitanje: Imam Goodmanovu peć staru otprilike godinu dana. Djeluje neko vrijeme puhajući vrući zrak i pokušava doseći temperaturu postavljenu na termostatu. Nakon nekog vremena pokušavajući doći do cilja, odsiječe. Kad pogledam peć, vidim kako crveno svjetlo trepće četiri puta. Da li bi zamjena filtra i nepravilno postavljanje u smjeru protoka uzrokovala ovaj problem?

Odgovor: Ne, ne vidim da je filtar unatrag uzrokovao ovaj problem. Nisam siguran što jest, ali da mislim da nije.

Pitanje: Što nije u redu s mojom peći kad se zapali, a zatim isključi?

Odgovor: Ako je stvarno brzo, možda je to senzor plamena.

Pitanje: Moja peć obično ne počinje sama od sebe. Mogu uključiti i isključiti prekidač sa strane peći, a zatim će se pokrenuti i pokrenuti, ali rijetko će se pokrenuti u suprotnom. Zamijenio sam termostat, ali problem ostaje. Indukcijski motor je također prilično nov. Svjetlo ne trepće. Što bi to moglo biti?

Odgovor: Iako ovdje nemam dovoljno informacija da predložim rješenje, ne bih nastavio raditi ono što vi radite, a da ga tehničar ne pogleda. To bi moglo biti nesigurno i stajati će vam više novca što duže čekate, a da ne spominjemo neugodnosti.

Pitanje: Je li 80 stupnjeva prevruće za pokretanje vaše peći na plin?

Odgovor: Po mom mišljenju da. To može, ali to će vjerojatno koštati malo bogatstvo.

Pitanje: Koji bi bio glavni uzrok da sam tri puta morao zamijeniti upaljač na svojoj peći u posljednja četiri mjeseca?

Odgovor: Pretpostavljam da imate ili neodgovarajući dio ili neispravan napon koji dolazi s ploče. Različiti upaljači zahtijevaju različite napone ... obično 80 ili 120 V, a ako je dio ispravan, ali napon nije, onda bi to moglo uzrokovati. Inače, ako dodirnete površinu plamenika tamo gdje ona svijetli, to bi moglo pokvariti i vaše nove lampice. Ulja s naše kože mogu uzrokovati da HSI izgori.

Pitanje: Iz svoje peći dobivam 4 trepćuća svjetla, što znači otvoreni granični prekidač. Danas je -40c, pa me zanima da li se pregrijava i isključuje samo zato što ga je teško pratiti? Ili postoji stvarni problem?

Odgovor: Provjerite ima li u filtru dobar protok zraka da se ne ohladi. Ako je moguće, provjerite jeste li zavojnicu klima uređaja provjerili je li začepljena ili čista za dobar protok zraka. Te su stvari besplatne. Ako ne, možda imate samo lošu graničnu sklopku.

Pitanje: Moje svjetlo trepće devet puta, a moj kod sugerira da je to upaljač. Zamijenio sam upaljač dva puta i još uvijek nema vrućine! Bilo koja pomoć bi bila jako zahvalna?

Odgovor: Žao mi je, ali ovi kodovi nisu isti po marki i ne znam ih sve. Kôd samo znači da se nije uspio zapaliti, a ne da je upaljač loš. (Ne možete dodirivati ​​dio paljenja tijekom instalacije ili će kratiti novi, međutim, ako je to bio problem i jeste li dodirnuli taj njegov dio, moguće je, ali ako svijetli, onda ne bi trebalo biti To je reklo da postoji mnogo razloga zbog kojih se peć ne dopušta da se sama zapali, a ja bih trebao više informacija o tome što se do tada događalo ili pokrenuo električne testove kako bih utvrdio problem.

Pitanje: Moja će se peć paliti i raditi, ali kad se ugasi, pilot svjetlo se uvijek ugasi, kako to mogu popraviti?

Odgovor: Zvuči kao da vam treba termoelement.

Pitanje: Moj ispuh iz vanjske peći slabo miriše na prirodni plin, ali unutra ništa. Je li to normalno?

Odgovor: Nikad nisam čuo za to niti naletio na njega i ne mogu smisliti kako bi to bilo. Ako to stvarno učinite, onda bih ga dao testirati. Nikad ne želite osjetiti miris benzina.

Pitanje: Što znači ako bijela žica motora puhala pričvršćena na crnu žicu koja se spaja na žicu za ograničenje ventilatora dotakne kućište puhala i ona počne raditi? To je kratki spoj u motoru što znači zamjena, zar ne? Puhalo se neće uključiti na bilo koji drugi način, a prekidač se neprekidno spotakne.

Odgovor: Zvuči kao kratko, da.

Pitanje: Zašto se pilot svjetlo gasi kad se moja peć upali?

Odgovor: To bi mogao biti slab plamen pa bi ga mogla ugasiti bilo kakva povratna struja zraka. Možda je to ipak pilot s prekidima. Ne znam za previše takvih postavljanja. Mogao bi biti loš termoelement. Možda loš izmjenjivač topline. Stvarno ne mogu sa sigurnošću reći da nisam tamo i nisam proveo neke testove.

Pitanje: Što znači "tlačni prekidač otvoren s indukcijom zraka za izgaranje"?

Odgovor: To znači da električni priključak koji tlačna sklopka treba "zatvoriti" nije i ako je "otvoren" neće dopustiti da struja prijeđe na sljedeći korak, tako da je ili prekidač loš ili postoji nešto što sprječava dovoljno usisavanja "Zatvoriti". Može biti loš induktor ili začepljeni dimnjak, ali obično je to prekidač. To bi bilo prvo što bih provjerio.

Pitanje: Imam ruud peć staru oko 4 godine. Nedavno počinje s kratkim ciklusom. Sve sam provjerio i čak promijenio filtar, ali i dalje radi istu stvar. Uspio sam skinuti vrata i rade dobro, ali kad vratim vrata, opet se prekidaju. Koji bi mogao biti problem?

Odgovor: Može biti prljav i želi više zraka, ali isto tako može biti i drastično niska temperatura, zbog čega jedinica radi više da bi išla u korak. Moja zna.

Pitanje: Imam Goodman peć na prisilni zrak stara oko 13 godina. Zamijenio sam tlačnu sklopku prije nekoliko godina, a puhalicu sam zamijenio i prije otprilike godinu dana. Trenutno imam problema s dobivanjem topline. Peć će raditi, ali ponekad ne puše vrući zrak. Kad se to dogodi, zvuči kao da se plamenici pale i gase. Već sam zamijenio termostat, ali to nije uspjelo. Ima li ideja?

Odgovor: Ako se plamenici pokrenu i uključe gotovo odmah, moja prva misao bio bi senzor plamena, ali osim toga, ne mogu savjetovati na temelju danih informacija.

Pitanje: Zašto mi vanjski ventilator ne uključi peć? Zapelo je.

Odgovor: Ako je vaš ventilator "zapeo", tada je motor vjerojatno zaključan i morat će ga zamijeniti.

Pitanje: Koje temperature treba biti zrak koji izlazi iz izmjenjivača topline? Je li 113 stupnjeva točno ili bi trebalo biti između 120-125 stupnjeva?

Odgovor: Granična sklopka ventilatora trebala bi vam reći u kojem opsegu bi temperature trebale raditi. Na njemu mogu biti utisnuti EX-130-160 stupnjeva.

Pitanje: Dok je peć u dugom ciklusu zagrijavanja (~ 30 minuta), čuću kako je indukcijski motor prekinut na 1 sekundu, a zatim se ponovno pokreće i nastavlja raditi. Ovo 1 sekundno isključivanje induktora može se dogoditi 3 ili 4 puta tijekom 30-minutnog toplinskog ciklusa. Samo induktorski motor isključuje ovo vremensko razdoblje od 1 sekunde. Puhalo peći nastavlja raditi. Treba li IDM zamijeniti ili možda okrugli ručni Honeywell termostat? 14-godišnja peć Tempstar.

Odgovor: Stat s tim ne bi imao nikakve veze. Imate li induktor promjenjive brzine? Možda mijenja svoju brzinu? Ako ne, tada bi trebao izvoditi cijeli ciklus, jer ako se zaustavi, prekidač za pritisak otvorit će se i isključiti jedinicu, a ako je to slučaj za vas, budite sretni, to je samo sekunda ili ne biste imali grijanje. Možda biste ga htjeli provjeriti prije nego što je hitno.

Pitanje: Moja se plinska peć okreće, radi nekoliko minuta, a zatim se isključuje. Zamijenio sam osigurač, a zamijenio sam i motor. Što bi drugo moglo biti?

Odgovor: Pa, ne bih zamijenio stvari ako ne bih znao da su loše zbog uštede novca. Na temelju ovdje navedenih informacija ne mogu reći, ali otkrivanje u kojem trenutku ciklusa se zaustavlja bi pomoglo. Možda bi testiranje sklopa bilo najbolje ako znate što tražite. Ako nije, trebali biste nazvati tehničara i omogućiti im dijagnozu.

Pitanje: Moja cijev za usis hladnog zraka puše vrući zrak nakon isključivanja ventila induktora, je li to normalno?

Odgovor: Ne. Ulaz nikada ne smije ispuhivati ​​zrak.

Pitanje: Ako ventilator induktora radi, ali se možda istroši, može li to uzrokovati neispravno funkcioniranje tlačne sklopke?

Odgovor: Moglo bi, da. Ne bi povukao dovoljno vakuuma da pokrene prekidač.

Pitanje: Moja peć Rheem iz 1979. u mom ormaru s grijačem na katu dobro funkcionira s 1/2 plavim 1/2 žućkastim pilot plamenom. Unutar vrata na kojima je smješteno vrlo je vruće na dodir, a također se i unutrašnjost ormara zagrijava! Bojim se koristiti svoj grijač, može li to predstavljati požar? Što bi moglo uzrokovati vruća vrata i toplinu u ormaru? Što treba provjeriti?

Odgovor: Mislim da je tako vruće jer je najvjerojatnije prirodna jedinica za propuh i nalazi se u zatvorenom prostoru. Vidjevši da je gotovo 40 godina ako možete, razmislio bih o proračunu za zamjenu i definitivno uložio u detektor dima / CO.

Pitanje: Instalirao sam svoju novu peć na ulje Patriot 80. Upalio i sve je uspjelo! Plamenik se pokrenuo, pokrenuo svoj ciklus i ugasio. Ali onda sam primijetio da puhalo za pomicanje topline nije pokrenulo. Što bih trebao provjeriti?

Odgovor: S obzirom da je jedinica nova, prvo bih provjerio ima li labave veze. Odatle zapravo morate samo testirati sklopove i vidjeti gdje je kvar, a zatim utvrditi zašto. Postoji nekoliko previše mogućnosti za navođenje na temelju pruženih podataka.

Pitanje: Bok. Imam dvogodišnju peć na plin RUUD. Radi točno 8 minuta, a zatim se sve isključuje i ponovno pokreće nakon 30 sekundi. Ovaj se ciklus ponavlja sve dok se ne postigne željena temperatura. Zaobišao sam termostat i isto se događa. Ima li prijedloga?

Odgovor: Ponekad će to raditi dvostupanjska peć između faza, ali ako se to neprestano događa tijekom cijelog ciklusa i ako ste preskočili statut, prvo bih posumnjao na hi limit. Provjerite svoj filtar i ako jedinicu niste očistili ... moglo bi biti da previše zraka ne izlazi iz plenuma. Ovo je samo nagađanje izdaleka i što bih dalje provjerio da sam tamo.

Pitanje: Moja peć mi daje pogrešku koja kaže "provjeri upaljač ili masu". Sve funkcionira kako treba dok puhalo ne krene dalje. U tom se trenutku plamenici isključuju i puhalo radi oko minutu. Zatim se isključuje i postupak započinje ispočetka. Je li to nešto čemu se mogu obratiti?

Odgovor: Na žalost, iako je možda nešto jednostavno što ćete možda moći popraviti, ne mogu vam pomoći odrediti problem bez pokretanja testova. Pokušajte resetirati prekidač i provjerite filtar. Pogledajte hoće li se dogoditi nešto što se čini uobičajenim, no u suprotnom će vjerojatno trebati pokrenuti električne testove. Oprosti.

Pitanje: ZAŠTO se električna peć aktivira s prekidačem, a ne s klima uređajem?

Odgovor: Te dvije jedinice nalaze se u odvojenim krugovima (ili bi trebale biti), pa to nije neobično.

Pitanje: Mora li vanjski ventilator HVAC jedinice raditi dok se koristi grijač?

Odgovor: To bi bila dizalica topline i to ne uvijek. Ventilator hladi kompresor ... većini trenutno nije problem pa neće raditi ako nije potreban.

Pitanje: Moja peć stara je 10 godina, a ista tvrtka je čisti i provjerava dva puta godišnje. Prije mjesec dana izišao je momak i očistio ga kao nikad nitko. Imao je komada po cijelom mjestu! Sad su filtri prljavi svaka dva tjedna ... bilo koja ideja zašto? Crnkaste boje.

Odgovor: Pa, da puhalo prije toga nije izvađeno i očišćeno, moglo bi raditi bolje, uvlačeći više prašine.

Pitanje: Kako popraviti peć kada se lupa kad je uključena i kada je isključena?

Odgovor: Ako se radi o konzerviranju nafte na kanalu (što je obično takva vrsta zvuka ... pritisak i smanjenje tlaka ventilatorom), morate locirati slabu točku i ojačati je.

Pitanje: zašto puhalo stalno radi i nikad se ne isključuje?

Odgovor: Ako radi "cijelo vrijeme", tada je ili prekidač vašeg ventilatora postavljen na "ventilator" umjesto na "automatski" ili postoji kratki spoj u niskonaponskim ožičenjima, statistici ili na ploči. Možete odspojiti niski napon s ploče da biste vidjeli hoće li se zaustaviti. To će vam reći je li problem u ploči (ako i dalje radi) ili je u ožičenju i statistici. Zatim tamo ponovno spojite žice i odspojite stat. Ako ventilator i dalje radi, stat je u redu, a problem je u žici. Zelena žica kontrolira ventilator. Dakle, crvena boja dodira zelene boje uzrokovala bi neprekidan rad ventilatora. Pokušajte ovo samo ako ste sigurni da znate što radite.

Pitanje: Instaliram novi induktor propuha (ispušni ventil) koji se isporučuje s četiri granična prekidača na kojima su četiri točke u boji (bijela, žuta, crvena i plava). Na svojoj peći imam samo dvije granične sklopke, gornja granična sklopka je plava, a donja žuta. Jesam li ispravno upotrijebio novu graničnu sklopku s žutim točkama jer zamjenjujem samo trenutnu donju graničnu sklopku s žutim točkama?

Odgovor: Zvuči kao da ste dobili "komplet" koji se može koristiti na raznim jedinicama, pa bih rekao da trebate biti u redu s tim, iako bih vjerojatno učinio oba ograničenja, ali barem zadržao ona koja idu uz vašu jedinicu kao rezervne.

Pitanje: Moja peć radi u redu. Ventilira se ispred kuće. Zašto vani ima tako čudan miris samo kad se peć uključi?

Odgovor: Jedini smrdljivi mirisi (poput trulog jaja) za koje znam da su rezultat lošeg izmjenjivača topline. Ne kažem sa sigurnošću da ste to vi, jer ne znam što osjećate, ali obično nema lošeg mirisa iz tih otvora.

Pitanje: Indukcijski motor se ne pokreće ili se okreće za pola okretaja kada se iz termostata pokrene poziv za grijanje. Motor se prilično dobro okreće kad se okrene rukom. Je li oštećen indukcijski motor moje peći ili nešto drugo, poput presostata, ne radi pravilno? Svjetlo mi daje šifru 31.

Odgovor: Možda imate kondenzator na induktoru koji je loš. Nemaju ih sve jedinice, ali neke imaju. Ako ne, tada možda ploča ne šalje napajanje induktoru. Morali biste provjeriti ima li napona kako biste bili sigurni da se to događa i je li možda motor i dalje loš iako se slobodno vrti.

Pitanje: Peć radi i dobro zagrijava kuću, ali kuća je suha. Ovlaživač zraka u peći radi, ali kuća je i dalje suha? Što mogu probati?

Odgovor: Jeste li pojačali postotak vlage koji stvara ovlaživač zraka? Dodavanje vlage jedini je način da riješite problem. Možda vaš ovlaživač nije pravilno veličine. Volio bih da mogu dodati još nešto, ali stvarno nema "popravka" ako sve funkcionira.

Pitanje: Gotovo svako jutro kad se probudimo, a kuća nam se smrzava. Kad odem u našu peć, vidim kodove pogrešaka 10 i 61. Zašto stalno imamo pogrešku ventilatora? Peć je potpuno nova!

Odgovor: Iako ne mogu biti siguran da je ovo vaš problem, često kada netko ima stalne probleme s puhanjem, to je zato što zrak koji dolazi u peć nije dovoljan. To bi mogao biti prljavi filter, premali kanal ili nedovoljno registara za povratni zrak. To je osobito često kod instaliranja nove jedinice na starije kućne kanale, a kanali nisu ispravno obnovljeni.

Pitanje: Moj model plinske peći nugm100ehb1 uzima zrak za izgaranje iz kuće, je li to točno ili ispravno?

Odgovor: Da, sve dok ima dovoljno slobodnog zračnog prostora. U priručniku za instalaciju nalazi se grafikon koji će vam reći koliko kvadratnih metara trebate imati. Također nisam siguran odnosi li se na vaš model, ali neki kažu da će skratiti jamstvo na jedinicu. Možda biste željeli pogledati priručnik i detalje o jamstvu kako biste to saznali.

Pitanje: Naša peć radi samo kad odvojimo cijev za usis zraka od njenog spoja na peći. Osigurali smo da je cijev za usis zraka prozračna. Peć je devedeset posto učinkovita peć. Ima li prijedloga?

Odgovor: Moguće je da je usis zraka premalen za udaljenost koju putuje. Morali biste pogledati priručnik za instalaciju kako biste vidjeli koja je preporučena veličina na temelju udaljenosti.

Pitanje: Zašto se moj plinski ventil za peć stalno otvara?

Odgovor: Usudio bih se reći ili je neispravan i treba ga zamijeniti ili je pogrešno ožičen i prima konstantnu snagu, a ne otvara se po naredbi.

Pitanje: Moj termostat ima tajmer (odlazak / povratak, itd.), Tako da će se moja peć povisiti do temperature prvi put kada se to zatraži, ali će se zatim isključiti do sljedećeg intervala. Što mislite što je to?

Odgovor: Na tržištu postoje stotine termostata pa vam ne mogu reći puno više od čitanja vašeg priručnika i dvostruke provjere vašeg programiranja. Zvuči kao da je nešto možda nepropisno programirano. Nažalost, svi programiraju drugačije pa ne bih želio pogađati.

© 2012 Dan Reed

Suzie N 13. ožujka 2020 .:

Imam 6 godina staru Goodman peć za propan, a nedavno je induktor peći morao puhati zrak 4 do 5 puta prije nego što toplina krene. Izašao je serviser i sve očistio i naravno da je to savršeno funkcioniralo dok je bio ovdje, no kasnije su se opet začuli zvukovi puhanja. Misli da je induktor, ali ja sam mislio da je zadatak induktora puhanja puhati zrak. Imate li kakvih ideja

Merlin M 6. listopada 2019 .:

Bok Dan,

Fantastičan članak, hvala.

Imamo staru peć Heil koju će uskoro trebati zamijeniti. Do tada pokušavamo šepati (mali grad i izvođači su vrlo zauzeti)

Naša peć dolazi između koraka 7 i 8, ali kratkih ciklusa. After the system warms up (flame burns for ~60 sec) the blower comes on but then the system starts to short cycle. Flame is on for about 2sec then off, one 2sec off and so on. Heat is delivered to the vents but clearly this is not right.

I have done the basic, check filter, change thermostat batteries, looks on roof to ensure eventing. At first I thought flame sensor but tow problems with that,

One, if that was the issue why would the furnace warm up. My thought is a bad sensor would prevent this. And two, for the life of me I cannot see a flame sensor on this unit.

Any suggestions?

Camster on March 13, 2019:

Hi Dan. So yesterday a furnace technician came to inspect my 23 year old Lennox High Efficiency Gas furnace. He said that the temperature in one of the ducts registered 68 degrees and if it reaches 70 the furnace will shut down. He said I probably need a new furnace. What is he talking about please?

[email protected] 8. ožujka 2019 .:

Every time we cut our furnace on into the old one it's one of the fan blowers fucking ancient and now it smells and it's smoking so when we cut it off and then we try to cut it back on the next day it just doesn't even turn on what could it be it was really dusty and stuff my life but another filter for it and it's just not working we cut the switches back on through the fuse box and it doesn't cut on and it's getting cold man what do I do what could it be

connie on January 01, 2019:

I have a new York furnace in my garage. I noticed that I feel warm air coming out of the furnace box in garage, while it is dispenseing warm air into the living space.

Dan Reed (author) on November 21, 2018:

Joe689 - So here's a theory. The old stat was perhaps inaccurate thus maybe the furnace wasn't heating up as much. No perhaps it's running longer thus increasing the temperature in the duct. As it heats up, the duct may expand and as the heat shuts off but the fan is still running and the temperature dropping the duct contracts and causes a "thump" or oil canning sound. I can't really see any other way a thermostat could cause this to start happening other than pure coincidence.

Joe689 on November 19, 2018:

Hi Dan, thank you for the detailed run down. Very easy to follow and intuitive. Thanks for making a complex subject a little easier.

I have a Luxaire gas furnace. I just installed a new thermostat, and started to observe some different behavior. When the thermostat reaches its temp, I hear the "clicks", and then right after the furnace make a thump, deep enough to hear through the floor, and then one more thump almost right after. The fans continues to run for a minute, and turns off. This did not happen with old thermostat. The "thumps" also does not happen all the time. I try to recreate it by toggle the temp up and down but can not get it to repeat. Only when it has been on for some time, does this thump upon signal to turn off occur. And it does not happen all the time. By the way, this is for heat. What could this be? I know it is not the fan because the fan does not turn off right away. It is right might the thermostat clicks.

It never happened with old thermostat. I am about 99% sure I wired it correctly. All my wires were labeled, and I also wrote down what lettered slots they were going in on the former thermostat. With that, it was pretty much 1:1 with the new thermostat.

Thanks in advance

Dan Reed (author) on November 15, 2018:

Ray - While I can't be sure what the issue you're having is I can say that typically a unit that runs until there is a failure will automatically kick on the blower as a default safety feature but it should shut off within 5 minutes or so after that. If you're having a limit issue, this could be why you're having problems. Perhaps, since the part is cheap and easy to change, try replacing it and see if that doesn't resolve the issue.

Ray Brewer on November 15, 2018:

I have a furnace that if it stays on for a long period of time will trip the limit switch and blow cold air and the only way to shut it off is switch the breaker off. I have a new filter and all my vents are open. Not sure what else to check?

Dan Reed (author) on October 29, 2018:

Ryan - There are a few things that could be going on and it would probably be best to get an HVAC technician out there to look at it. Gas isn't anything to mess with and hopefully not but you could have a heat exchanger issue and that would definitely require a tech to repair. Good news would be that you likely still have a warranty on the exchanger if it is your problem. (Not the labor to install it but the part itself.)

Casey Rohman on October 28, 2018:

Thank you very much for your reply, Mr. Robbins. My post here didn't appear when I checked back after posting, thus my late response. The breaker is the proper size, and no other electrical problems are appearing in the house.

However, your advice regarding an electrical problem was correct. I think that even though I was careful to reconnect the new control panel properly, it seems likely that at least one of the connections was a bit loose. After I went through and rechecked them all as well as other electrical connections in the furnace, the problem disappeared and the furnace has been functioning properly since. Your patience and willingness to help are much appreciated!

Ryan Jewell on October 26, 2018:

I have aTrane 2 stage furnace. It makes it to around item 7 in your start up list. The furnace will be lit for about 15-20 seconds and then go out... I can hear a waffling whistle noise and see fluttering in the flame at the exit of the gas tubes like it has too much air or not enough gas flowing. And then the middle to further away from ignitor gas lines blow out and it cuts gas to the unit to shut off. Any thoughts on what wrong?

Dan Reed (author) on October 26, 2018:

You're welcome Brian. Glad I could help some. Best wishes!

Dan Reed (author) on October 26, 2018:

Tom - I'm sorry no. There isn't enough here for me to offer sound advice. Perhaps the limit? Those are a common failure in older furnaces.

Brian S. Pollack on October 25, 2018:

Bok Dan,

Thanks for the input. It is the pressure switch. I can now return the control panel I ordered and had someone else install the pressure switch. Next time i'll know. thanks for your expertise!

Tom on October 25, 2018:

I have a old furnace it’s cal a Stewart Warner . It about 40 years old. I just had the thermal coupling replace and it was working fine then it warm up outside so I turn it off. Then when I needed heat again it wouldn’t come on. I can hear the click in the thermostat To on the furnace but nothing any idea?

Dan Reed (author) on October 23, 2018:

Don - This sounds more like a pressure switch problem to me. Perhaps check out my article on that and see if it helps.

Dan Reed (author) on October 23, 2018:

Brian - I would be more inclined to think it's the flame sensor or pressure switch. If the sensor is dirty or pressure switch is weak, it could be giving a false failure that can happen within split seconds causing the valve to click open and closed but so fast that the flames don't actually go out. This is my thought from a far. Perhaps check them and see.

Dan Reed (author) on October 23, 2018:

Casey - When there are multiple part failures in a row like this I always consider the incoming power and circuit. Is the breaker sized properly? Is the furnace on it's own dedicated breaker? Are there any other "occurrences" in the home with other appliances or lights? I wish I had an easy answer here but testing will definitely be required to definitively pinpoint the issue.

don murray on October 20, 2018:

Hi Dan, I have an older carrier furnace, light is on constantly, and no blinking noticed. Inducer spins, I hear the blower sound, igniter glows hot, then everything shuts down.

I just replaced the gas valve, and now the same thing is happening. Ima li ideja? could the gas valve I just put in be bad ? The gas is turned on to the furnace, lol...

Brian Pollack on October 20, 2018:

I am trying to figure out what going on with my Trane XE80. It can be either the limit switch, control panel, or gas valve that is clicking. The furnace runs, no problems with the start. It remains on and about ten minutes into blowing hot air it will click about 5-10x. The flames will flicker on and off with each click. The furnace is still running, the flames come back continually and the clicking goes away.

I have already checked the thermistor. Any thoughts?

Dan Reed (author) on October 18, 2018:

While your message isn't clear to me I can say that changing the filter will help keep temps down but has nothing to do with the pressure switch. The problem may be the pressure switch however the 2 are not related. Perhaps check out this article and see if it helps...https://dengarden.com/appliances/Everything-You-Ne...

Reed Wickstrom 17. listopada 2018 .:

I have a Heil 2 stage filter and it does nothing when thermostat calls for heat; however, if I unplug the limit switch the inducer motor starts and then shuts off around 30 seconds later after I reconnect it. FYI, I checked the furnace filter and it was dirty. I am thinking that it overheated. Do you have any suggestions.

Dan Reed (author) on October 11, 2018:

Call the company who installed it and ask them to check it out.

Carol miller on October 11, 2018:

I have a 2 month old heater/air con. Installed and it gets very very hot to touch. What should i do?

Dan Reed (author) on May 16, 2018:

Craigh S - I can't be sure without testing. Maybe the board is bad? Are you sure it's the rollout switch and not the temperature sensor on the blower housing?

Craigh S on May 14, 2018:

Why would rollout switch error show when it a/c is used but not when heat is used?

Dan Reed (author) 01. svibnja 2018 .:

Derek - I really can't think off why these two would be running simultaneously because of your cutting concrete unless you got water on the board and shorted something out. I could maybe understand just the blower but not along with the inducer. And are you sure this is a result of your work or that you just happened to notice because you spent so much time down there?

dgrandstaff 01. svibnja 2018 .:

I was cutting concrete close to the furnace and there was a lot of dust, now the exhaust fan and the blower run at the same time nonstop.

Dee Kae on March 25, 2018:

Thank you for responding.

Dan Reed (author) on March 25, 2018:

Well Dee, Like other mechanical working things, they sometimes just do something weird and turning off and on the stat can trigger a new call and voila, it works. I wish I could offer a better explanation but it does happen. My furnace will sometimes shutdown on a real cold night because I believe the "heavy" cold air along with a right wind direction overcomes the pressure switch/inducer and can trigger a lock out. Wind stops, I reset the unit, voila...it works. It is very difficult when a cause can't be pinpointed. Next time the furnace shuts down see if you can catch the blinking red light code and maybe that would help.

Dee Kae on March 25, 2018:

I have a Tud-B series older Trane furnace. It is cleaned professionally every fall and last fall HVAC said it's still in great condition. On Feb. 22, March 3, March 6 and March 25, the furnace stopped working but started again when the thermostat was turned off and back on. I haven't called HVAC yet because it's happened late at night and on weekends so it has seemed to be better to try turning it off and on first. Once last summer the newer air conditioner stopped and they couldn't duplicate the problem because it started working when they got here and turned the thermostat back on. I have a newer electronic programmable thermostat. I've changed the batteries twice (display was still working), cleaned it (no visible dust) and tightened a loose anchor screw. What else could cause my problem besides a faulty thermostat? Turning the thermostat off and right back on has turned the furnace back on all four times. Hvala vam!

Dan Reed (author) on March 06, 2018:

I would say perhaps you have a slow close gas valve however if it keeps running or goes into lock out then I don't think that's it. It sounds like the valve itself maybe going bad. It's a "normally closed" valve and if the power is being lost in the valve then it will not hold it open and thus creating this intermittent issue. I can't swear to it without running tests but I would have it checked out because it will cause other components to wear out if it's constantly starting and stopping.

RandysPCs on March 06, 2018:

I have a Coleman furnace that acts like it's running out of gas sometimes. I have watched it and what happens is, the induction fan runs, ignitor glows, gas lights but then gradually the flame gets smaller and goes out. Then the gas valve clicks off and the cycle starts over, sometimes it will stay running sometimes it goes into lock out. Ima li ideja?

Dan Reed (author) on March 06, 2018:

Lowski - I'm nearly positive it's the flame sensor and is probably just a bit in need of a cleaning. You likely won't even be able to see dirt on it but it doesn't take much at all. I've written on how to do this so perhaps if you need some guidance you could check that out. Hvala na čitanju.

lowski on March 05, 2018:

Bok Dan,

I recently replaced the circuit board on my Ruud 80%. Apparently there was a bad relay, causing my inducer motor to constantly switch between hi and low, delaying the furnace from ever igniting. Since I switched out the board, it has worked fine, with the caveat that every once in awhile, when the inducer motor turns on and the pressure switch makes, I hear the gas ignite but then turn off right away; but the blower motor still comes on and blows cold air. Once the blower motor turns off, the inducer comes immediately on and the whole sequence starts again, but this time with the flame staying lit and working properly. Thoughts?

Dan Reed (author) on February 26, 2018:

Roger, There are a lot of possibilities based on the info you've provided. I would need more to offer any sound advice. Maybe igniter is bad? Maybe inducer/pressure switch is preventing it due to obstruction or part failure? Maybe board? I'm sorry but I can't help much at this time.

Roger on February 26, 2018:

furnace turns on but the igniters don't light up.

Dan Reed (author) 27. siječnja 2018 .:

I don't think it's either to be honest. Sounds more like an intermittent pressure switch issue. See my reply to John.

Dan Reed (author) 27. siječnja 2018 .:

Sounds similar to how a pressure switch will act sometimes. It's cheap and easy to fix so maybe give it a try if it's in the budget.

Jakobsdad on January 26, 2018:

My furnace works perfectly for one or two cycles then it goes through the start up process but the igniter doesn't come on. The furnace continues through the whole start up process then blows regular air through the system. if I turn the thermostat to the off position and then back to heat it works perfectly for one or two cycles then repeats. do you think this is a thermostat issue or an igniter issue? the igniter works as it should after the manual power cycle from the thermostat.

john on January 26, 2018:

My furnace works perfectly for one or two cycles then when the thermostat calls for heat the igniter doesn't light and it blows cold air only. I can turn the unit off then right back on and it works perfectly again until one or two more cycles then I have to repeat a powering down to get it to work

Kathleen8 on January 26, 2018:

You are probably right! hahahhaha I figure it there was a problem, it would have shown itself by now. Hvala!

Dan Reed (author) on January 25, 2018:

And though I hate to say it, that may be exactly why this is an issue for you. Furnaces aren't as quite when you have to sleep next to one as they are in a basement and is likely why the evenings seem worse...it's quieter, colder, and you're right there for it all.

Kathleen8 on January 25, 2018:

Honestly, I don't know about furnaces. It's a Carrier 59SC5A I believe.. I don't believe the manual says it's 2 stage. I thought the filter was dirty, so I changed it with a nice Filtrete filter and no sluggish noises upon the start of cycling. Then 3 weeks later, it started doing it again. I looked at the filter and it was dirty again. So, I jut put in a filter from ACE Hardware and the noise came back. It will only usually happen in the evening when it actually does happen.. You hear the switch and then it's this sluggish noise like it's having a bit of trouble getting going) from what I assume is the air draft inducer and then it starts blowing just fine. My brother thinks maybe it's just working harder? I can't believe I'm the only person with this issue..then again, I live in a tiny house and the furnace is right there next to my bedroom so I hear EVERYTHING.

Dan Reed (author) on January 25, 2018:

Kathleen8 - I can't really say much based on the information here but since it's condensing...is there a chance it's also a 2 stage unit??? If so, the gas output and blower speeds may vary by cycle and whether it's calling for the first or second stage.

Kathleen8 on January 25, 2018:

Hi, I have a Carrier Condensing gas furnace. Sometimes, when the furnace kicks on and starts it's cycle, it sounds sluggish before the blowing begins. Most times, you hear the click, the cycling starts and it starts blowing but it seems like since we are in the midst of winter and it's on all the time, it happens for a few cycles during the evening, but not all the time... Any ideas? Could there be dust stuck somewhere? Hvala!

Dan Reed (author) on January 16, 2018:

Unfortunately there are a too many possibilities for me to say anything certain. Maybe a fan limit? Intermittent pressure switch? Gas valve? Circuit board? Unless you just want to start throwing parts at it, you'd need a tech to troubleshoot the circuit.

Phyrfitr on January 16, 2018:

i have a york 90+ 100,000 btu single stage unit, the thermostat will call , the inducer motor will spin up the solid igniter will glow the gas valve will open and the furnace will cycle, for five minutes or so then the flame will go out but the inducer and blower motor will continue to run, the igniter will glow and the gas valve will start clicking constantly and the flame will ignite multiple times causing multiple fuel ignitions sometimes making a Poof sound, I sit and watch it thru the peep hole, this has been going on now for about A week, Any thoughts ?

Bill Fish 14. siječnja 2018 .:

Thanks for responding to my question. You said that my problem might be related to the flame sensor, with the limited info I gave ya. So I cleaned the flame sensor, which was very simple, and my furnace is working great again. I probably saved a couple hundred dollars by doing that myself. Hvala još jednom.

Steve Stark on January 08, 2018:

I have a 14 yo Tempstar gas furnace. During a long heating cycle, the inducer motor will cut off for a second and then come back on. This happens maybe 3 or 4 times during the heating cycle. Does the IDM need replacement? Or, could the thermostat be faulty? (round manual Honeywell thermostat) Thanks

Dale 03. siječnja 2018 .:

Have a 10 year old furnace, have it cleaned and checked twice a year. A month ago the fella took the thing apart like never before, put it back together and left. Now the filter is filthy after two weeks. That never happened before. Have any ideas what happened? Hvala vam. 1/3/18. [email protected]

Earl 03. siječnja 2018 .:

My furnace will not stay running unless the door is off, why?

Dan Reed (author) on December 30, 2017:

Angelo - It seems maybe the thermostat is the issue since the furnace will only turn on when the stat says to so perhaps it's not reading properly???

Dan Reed (author) on December 30, 2017:

Jeff - I'm sorry but there isn't enough for me to offer much. Check your filter. Could be a high limit switch??? Not sure though.

Angelo on December 29, 2017:

I have Lennox Meritt series that's 13 years old. It started to act weird yesterday. It will only turn the furnace on and maintain the house temperature if the thermostat is set at 73 and above. If I set the thermostat below 73, it will will not turn on the furnace.

Jeff on December 28, 2017:

I have a Coleman I replaced the pressure switch and the thermostat it is running a cycle at two set to 70 but any higher it will run as well then shut off and not fire in less I turn it back down to 70 and cut power and reset it

Dan Reed (author) on December 26, 2017:

RK - It sounds like you either need a new motor and/or motor capacitor. I don't recommend using your hand. I suppose it may be getting bad voltage from the board as another possibility but you may want to call a tech.

RK on December 26, 2017:

Hello, I have Carrier weathermaker 8000 gas furnance. Very often furnace would not start and I have to rotate the motor by hand and press the cover switch to start again.. If i leave it, it may start randomly after few hours on its own Any suggestions

Dan Reed (author) on December 17, 2017:

Craig, Though I can't say for sure from here, I would first check the hi limit and is the coil for your a/c new too? If not, perhaps it is clogged and blocking air flow??? Is the new furnace fan perhaps more powerful? If so, your ducts may not be big enough on the return side...especially if you added an air cleaner. These are my suspects. Hvala na čitanju.

Craig on December 15, 2017:

Have a Goodman furnace installed on 2016. I set the thermostat to 72 the furnace starts up. Runs for a while tries to make temperature but then cuts off and there is red light blinking 4 times. After a while when the temperature has dropped it kicks back in. I replaced the filter. The thermostat was recently replaced. I have checked the airflow outlet and inlet they don't have any objects. Would a leaking window sill or older windows result in this kind of behavior where the furnace cuts off? This is again a brand new furnace.

Dan Reed (author) on December 14, 2017:

Greg, I'm not sure what advice to offer based on this info. You experienced some sort of failure that is apparently intermittent so when you reset the breaker it started over and apparently didn't have the same problem at that time. In short, something is happening to shut down the unit and you'd need to know at what point in the cycle the unit shut down and caused the unit to "lockout". Any failure that happens 3 times will put the furnace into "lockout" for a set period of time before it tries again. Sorry I can't be of much help based on this info.

Greg Staples on December 13, 2017:

Furnace stopped working the other day, wiggled wires, tripped breaker back and forth, after a bit it came on and worked through the night fine. Same thing happened again the next night. Replaced the breaker because there didn't seem to be any power going to the furnace. Furnace is working so far today but when it is running it seems to ossolate power now and then. Ima li ideja?

Dan Reed (author) on December 11, 2017:

Thomas - It sounds like you're not getting enough air flow when the filter is in. Perhaps it's restricting the airflow just enough to make the unit overheat and shut down prior to satisfying the thermostat. Often when adding a high end air cleaner, the ducts coming to it need increased in size to allow for more air to keep the unit temperature within it's confines and not overheat the motor or exchanger. Hope this helps at least to understand what the issue MIGHT be. Hvala na čitanju.

Thomas on December 10, 2017:

If I remove the air filter on my electric furnace then I heat until it reaches the Nest thermostat selected target temperature. If I place the air filter in, it doesn’t reach the selected temperature but is about 4 degrees colder. What is wrong and what is the fix?

Dan Reed (author) on December 08, 2017:

Dave - They can vary. The best way to know your range is to check the High Limit/Fan Switch. There is usually a temp range on there for your unit.

Dave on December 05, 2017:

What should the heated air coming out of heat exchange Be is there a minimum temp ??? Like 120 deg ?

Dan Reed (author) on November 12, 2017:

John - That's an odd one but likely an issue with communication between the stat and furnace. I'm sorry but can't offer much there other than rechecking your programming and running electrical tests to see what's making the unit shut down in that first cycle.

John Beattie on November 11, 2017:

My gas furnace comes on for the 1st program cycle of the morning but doesn't complete the cycle and will stop with out reaching the programed setting. If I turn the furnace on/off it then acts like it completes a heat cycle without the burners on. Then in a minute or so later the furnace comes on and then regularly runs the rest of the day. what might be wrong?

Dan Reed (author) on November 10, 2017:

Ozzie - A high efficient furnace has an intake and exhaust pipe and connection usually. Sometimes guys will let the unit pull air from in the home on the intake and not run it all the way outside. In order to do that, they are supposed to make sure there is enough free square footage to provide the needed intake. Taking that door off may be giving you just enough to do the job but you shouldn't have to leave any covers off your unit to make it run. Hope that helps.

OzzieSch on November 10, 2017:

What exactly brings in the outside air for an efficient furnace? I don't get enough outside air to combust the gas. When I take off a little side cover on the furnace to let in inside air, the furnace works properly. What is my problem?

Dan Reed (author) on November 08, 2017:

Lee - If that's the case then they may need a good cleaning. I'm a little stunned though since a flame sensor should detect that the burners aren't lit since one needs to fire to fire the next and the next. ???

Dan Reed (author) on November 06, 2017:

Marco - I'm sorry but for me to help I would have to perform electrical circuit testing to pinpoint your problem here. I would start with the thermostat. Sounds like it may be suspect.

Dan Reed (author) on November 02, 2017:

Thank you Jonas!

Jonas Porter 1. studenog 2017 .:

This was just an awesome explanation. Hvala vam. Hvala vam.

Dan Reed (author) on October 21, 2017:

Kevin - There is obviously a short somewhere. Likely culprits are the transformer and/or entire board. There could be other causes but this is what I'd suspect. Hvala na čitanju.

Trina Bowers 19. listopada 2017 .:

Ok i checked the fuse, i clean the heating sensor and the blower is working, glow ignitor comes on, slow flashing green light. I checked the thermostat ....the problem is i cant seem to get a flame ignited i dint know what else to do...i want to call for help to be my last resort.

Jw clink 19. listopada 2017 .:

I replaced my ignition last year and furnace work fine.

This year it will not even get hot.

Fan works fine.

Any idea?

Kevin Zoch on October 17, 2017:

I have a Trane Furnace that I determined has a blown fuse on the control panel. When I replace the fuse and push the black switch that the metal panel touches it instantly blows again.

Aaron on October 13, 2017:

I have a Colman Evcon. It is flashing 4 flashes meaning bad limit switch. Tested all switches and checked out. Have a green flash when unit not heating. Bad board?

Dan Reed (author) on October 07, 2017:

Duane - It sounds like it. If the inducer fan/motor is shot then nothing will work as it's the first step in the heating cycle and if it is bad, the whole assembly is usually sold as a piece and is typically specific to it's brand so universal parts aren't likely going to be an option for repair. You'll need to find the distributor for your brand of furnace to find the part most likely. Hvala na čitanju.

Duane on October 06, 2017:

The induction fan does not start it just hums. It does not spin. Is the fan bad or is there something else I should look for?

Dan Reed (author) 11. rujna 2017 .:

Amacblue - The coil sits on top of the furnace. It's not part of the furnace. It is not always possible for a homeowner to do this since sometimes there is not way to access the underneath of the coil where dirt and such collects in which case it would need to be removed and that DEFINITELY requires a service technician. If you can however access the underside, congrats and it should be cleaned but carefully and not to bend the fins over so that air can't pass through. Hvala na čitanju.

Amacblue on September 08, 2017:

I would like to clean my coil on my furnace however o can't seem to locate it. It is a carrier just like the one pictured thank you

Dan Reed (author) on July 05, 2017:

Luis - You may have a blown fuse on the board. It's usually 3 amp fuse that is like that in a car. Can't say for sure but that's where I would start. Thank you for reading.

Dan Reed (author) on March 26, 2017:

Robby =- There is a laundry list of things to check from here however it doesn't seem coincidental that this is happening after the stat was changed. Sounds like perhaps your white wire isn't making good contact or in the right spot. Double check your stat wiring. Beyond that, there are too many things to check to list here. Fuse on board? Gas valve? Ignitor bad? Limt? Pressure Switch? I'm sorry I can't be more helpful from here. Hvala na čitanju.

robby on March 25, 2017:

My heater stopped working yesterday nigh (it had stopped once few months ago, we changed the thermostat battery and it worked fine). After it stopped working, I put a new thermostat and still no luck. These are the few observations, please help in letting me know what is wrong

1) the AC works fine with both thermostat. The AC turns on (outside the house) and the blower blows air

2)On heat, the fan ON position gets the blower working (and you can hear the blower unit below the furnace making noise).

2)On heat, auto, nothing is working. The blower does not work, the flame is not lit (however the pilot flame is lit fine)

While changing to new thermostat, twice on Heat/AUTO, the blower came on but it kept pushing cold air for minutes. Now even that is not happening. Manually pushing the switch in the furnace gets the blower going, but there is no furnace flame(only pilot flame).

Please let me know what to do next

Dan Reed (author) on March 08, 2017:

Arash - It sounds like you had/have a short circuit somewhere. If you don't have a voltmeter you will have a very hard time finding it. You may want to call a tech or you could find yourself spending a lot of money on parts you don't need or buying a part that will short again because you didn't identify the source. Thank you for reading.

Arash on March 07, 2017:

Hi Daniel, I have a Lennox hvac with two zone. My heater stopped working last month an no power on thermostats. I notice the fuse on zone controller board is blown. I changed the fuse with a 5 amp. The power return to thermostats but heater didn't turned on again. I ordere a new zone controller but again the fuse blown in new board. So I thought the problem is from main controller board. I ordered and replaced the main controller plus adaptor. Still heater doesn't work. The egniter glows but the gas valve doesn't release gas to flame. I checked the voltage on gas valve and it's not 24v. It keeps trying ignite and doesn't go to watch guard mode. Would you please help me to figure it up? Thank you

Ccole456 on February 21, 2017:

Hvala vam. I looks up the difference and it appears it is an ignition board. Thanks for confirming. We have a number of things to try and hoping to keep the unit going for at least a few more months!

Dan Reed (author) on February 21, 2017:

If you have a spark ignition board then you perhaps will not have what I was thinking of. My apologies. There are so many boards out there and this was not what I was envisioning. It would be in plain site if you could change it and I don't believe you can open those without causing further damage.

Ccole456 on February 21, 2017:

Daniel- Curious if you can assist in locating the fuse on the board. The white Rogers control seems to be sealed. The fuse would be inside the case correct? The main fuse at the switch is fine we did check that one.

Dan Reed (author) on February 21, 2017:

Perhaps you've blown the fuse on the board. Typically a 3 or 5 amp automotive type fuse and/or perhaps the 120v/24v transformer took a hit. That could be the humming you hear. All of these are cheap places to start. I'm sorry but troubleshooting over the net is very tough so I try to recommend some of the simplest, cheap repairs to folks.

Ccole456 on February 20, 2017:

Daniel Robbins thanks. Nothing we have read or viewed yet has led us to the capacitor. Haven't been able to make any of the initial trouble shooting techniques give us a clear yes or no. We had a number of power failures from wind the day before it stopped working. If I understand you the the old White Rodgers control panel should illuminate to indicate at least something.

We will look into the capacitor then probably need to call technician if that doesn't work?

Dan Reed (author) on February 20, 2017:

Ccole456 - Sounds like the main blower isn't turning and that humming may be the motor trying to start. There is a capacitor usually mounted to the blower housing that may be bad and would be a cheap easy place to start and if that doesn't work, perhaps the blower is shot. That said, if the light on the board isn't lit, then you may have taken a hit electrically and then the potential possibilities get to be too many to cover here. That said, I would start at that capacitor. Hvala na čitanju.

Ccole456 19. veljače 2017 .:

York gas furnace clicks on and then you hear a low continuous buzzing noise (seems to come from near the control panel) and nothing else happens. Replaced inducer motor thinking that was the problem, same issues.

Stat working and fan doesn't turn on when switched "on" at stat. Getting power where stat wires connect to pressure switch. Tubing at pressure switch appears unblocked and in good shape.

Could it be the pressure switch? Could it be the control panel? There is one light on control panel but it doesn't illuminate, no blink code, nothing. Could it be something else? Thoughts?

Jill on February 08, 2017:

Just replaced an oversized furnace with the right sized one as i was having issues with the furnance constantly coming on. I lowered the thermostat several degrees during the day so it would not come on as much. With the new furnace I thought this would all be resolved but it has not. It comes on more frequently and even with the temp set lower it comes on every 10 mins. Any advice? I've been dealing with this for 2 years and I just want an answer!

Wayne Hogan on January 31, 2017:

Have a 2-stage furnace. furnace runs great on high, runs for about 2 minutes on low then gas shuts the gas valve and the cycle repeats many times till thermostat is met. I have replaced the roll out switch and flame rod and it still occurs. Any suggestions?

Chris taft on January 22, 2017:

Carrier weathermaker has been having flame out problems, had a tech come out and tell me that the intake/exhaust wad too small and needed to be 3", so all that is changed and now it seems like it won't cycle back to back without having an issue. Turn power off to furnace and back on will work for 1 maybe 2 times. Any advice?

Dan Reed (author) on January 22, 2017:

Michael Riemer - Not real sure. Could be too large of BTU. Could be the LP kit to make it LP wasn't adjusted properly. Could be a new stat is more accurate and the old one wasn't keeping the temp as consistent. Sorry but this is a tough one that would require further investigation onsite than I can provide here.


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