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Rješavanje problema uobičajenih problema s peći sa stručnjakom za HVAC

Rješavanje problema uobičajenih problema s peći sa stručnjakom za HVAC

Otkrivanje problema s peći

Prije nego što nazovete profesionalce, zašto ne biste sami pokušali popraviti tu peć?

U HVAC industriji sam više od 23 godine. Postoji mnogo stvari koje mogu poći po zlu s peći, ali mnoge probleme lako je shvatiti i riješiti. Čak i ako vam je potreban dio, nemojte se obeshrabriti - mnoge najčešće zamijenjene dijelove jednostavno je instalirati i obično ih možete kupiti od lokalnog dobavljača. Vaše šanse da vratite toplinu prije, a ne kasnije zapravo nisu loše. Ispod ćete pronaći:

  • Kontrolni popis za rješavanje problema s peći.
  • Savjeti o uobičajenim popravcima peći.
  • Video vodič koji će vam pomoći da ga sami popravite.

Kontrolni popis za rješavanje problema s peći

U nastavku detaljnije objašnjavam svaki od ovih procesa. Počinjemo s najjednostavnijim problemima, a zatim testiramo na teže probleme. Važno je biti metodičan i sistematičan u dijagnozi.

  1. Provjerite postavke termostata.
  2. Provjerite ima li napajanja putem prekidača, prekidača, žaruljice i osigurača.
  3. Provjerite je li plinski ventil otvoren.
  4. Provjerite filtar.
  5. Provjerite ima li paljenja u kontaktu.
  6. Provjerite ima li potvrde paljenja osjetnik plamena.
  7. Provjerite postoji li začepljenost dimovoda / dimnjaka: prekidač pritiska.
  8. Znajte kada trebate nazvati servisnog tehničara.

1. Provjerite termostat

Znam da možda zvuči glupo, ali prije nego što se zanesemo, provjerimo termostat na nekoliko stvari. Mogli biste se iznenaditi koliko se novca godišnje potroši kad dečki poput mene dođu i pojačaju termostate ljudi ili im zamijene baterije.

Kontrolni popis problema s termostatom

Ponekad se veliki problemi mogu lako riješiti.

Ček...To bi moglo...

za pomiješani digitalni zaslon

treba zamjena (ovo možemo testirati kako bismo bili sigurni)

za trepćući indikator baterije

trebaju nove AA baterije

podešavanje temperature

ne biti dovoljno visoko

odabir funkcije

ne smije biti uključeno na "grijanje" (isključite i ponovo uključite da biste bili sigurni)

iznutra za labave ili dodirujuće žice

samo treba pooštriti ili pospremiti

Kako testirati termostat

Testiranje vašeg termostata zaista je jednostavno. Sve što vam treba je mali ili srednji odvijač i kratki (6 ") komad žice kolosijeka 18 (ono što ćemo nazvati" kratkospojna žica "). Ako idete u željezariju, zatražite" 18/2. "

Jednostavno idite do peći, uklonite vrata i slijedite ove korake.

  1. Pronađite pločicu na mjestu gdje se žice termostata spajaju s peći.
  2. Odspojite žice spojene na stezaljke "R" i "W". (Žice bi trebale biti crveno-bijele, ali ne uvijek.) Sigurno ih gurnite u stranu.
  3. Spojite žicu kratkospojnika između stezaljki "R" i "W".
  4. Ponovno učvrstite vrata i provjerite radi li peć.

Je li upalilo?

NE: Tada vaš problem nije u termostatu.

DA: Tada je vjerojatno da je vaš termostat loš i treba ga zamijeniti. To bi mogle biti žice koje spajaju termostat s peći, ali ako nisu labave, lomljive ili slomljene, malo je vjerojatno.

TAKOĐER: Ove upute služe za ispitivanje samo redovnog kruga od 24v (niskog napona). Drugim riječima, nemojte koristiti ove upute ako rješavate probleme s mrežnim naponskim krugom. (120 V ili više)

Termostati kojima se kontrolira živa Gotta Go

Ako imate stari termostat koji osjeti temperaturu živinom žaruljom, zamijenite je što prije. Nije ni približno točan kao noviji digitalni modeli, a budući da sadrži živu, nije siguran.

Zamjena vašeg termostata

Ako ste odlučili da trebate zamijeniti vlastiti termostat nakon izvršavanja gornjih koraka ili ako imate staru verziju kontroliranu živom, morat ćete odabrati termostat koji ćete koristiti.

Većina renomiranih proizvođača termostata pružit će vrlo jasne upute sa svojim jedinicama o tome kako ih instalirati, a vlasniku kuće doista nije previše teško učiniti sami ako odvojite vrijeme i slijedite isporučene upute.

Možete dobiti sve fensi i kupiti Nest termostat koji se povezuje s vašom Alexa i svim ostalim modernim uređajima za kućnu automatizaciju. Ili, ako ste poput mene, samo želite nešto jednostavno, jednostavno za instalaciju i lako za čitanje. Više volim nešto poput ovog Orbit Clear Comfort termostata (dolje).

2. Provjerite postoji li napajanje peći

Ako čujete kako peć pokušava upaliti (zapaliti) ili čujete puhalicu, ali ne dobivate toplinu, možete preskočiti ovaj korak jer imate snagu. Ako ne, provjerite sljedeće:

  • Jeste li se prekidali?
  • Je li uključen servisni prekidač u peći? (Većina jedinica ima ovo montirano na peć ili strop odmah iznad.)
  • Je li uključeno malo crvenog svjetla na pločici kruga peći? (Većina modernih peći ima indikatorsko svjetlo koje vam govori da dobiva snagu, a ako imate sreće, reći će vam što možda nije u redu.)

Imaš snagu?

DA: Dobro, onda idemo dalje.

NE: Tada će vam trebati električar ili HVAC stručnjak. Prije nego što nazovete, provjerimo osigurač na pločici.

Je li peć pregorjela osigurač?

Većina modernih peći ima osigurače od 3 ampera na pločici. Međutim, osigurači se mogu nalaziti negdje drugdje na pločama u slučaju nekih peći. Izgleda baš poput osigurača standardne veličine koji pronađete u svom automobilu i trebao bi ga biti lako pronaći.

Ako imate žaruljicu indikatora, a ona ne svijetli ili ne trepće, ovo je možda vaš problem i lako je utvrditi i popraviti.

Jednostavno izvucite osigurač s ploče i provjerite je li karika izgorjela i / ili prekinuta. Ako je to slučaj, trebali biste ga moći preuzeti u lokalnoj prodavaonici hardvera ili automobila. Ako već ne, dobra je ideja držati pri ruci dodatne osigurače jer je ovo pitanje tako često. Obično nije potrebno, ali ako možete, nabavite neke osigurače s brzim djelovanjem od 3 pojačala. Ovi osigurači marke Bussmann savršeni su za peći.

NEMOJTE pokušavati zamijeniti osigurač nekim drugim pojačalom.

3. Provjerite je li uključen plin

Zvuči prilično jednostavno, ali svakako vrijedi provjeriti. Bio sam na pozivima gdje su djeca koja su se igrala oko peći okretala gumbe i prebacivala prekidače, što je roditelje koštalo puno tuge (i oko 150 USD).

Jeste li provjerili filtar? (Morao sam pitati.)

4. Provjerite trepćuće crveno svjetlo

Ako se na pločici ploče peći nalazi malo indikatorske lampice (obično vidljive kroz maleni prozorčić na vratima peći) i trepće, pokušava pomoći.

Ovo svjetlo trepće svojevrsnim Morseovim kodom, brojem koji odgovara grafikonu smještenom negdje u peći. Obično je na vratima koja uklonite s prednje strane. Na primjer, "točka ... točka ... stanka ... točka ... točka ... stanka" bio bi broj 2, za koji grafikon može reći da označava nešto poput "kvara paljenja" ili "prekidač pritiska otvoren . "

Razumijevanje crveno trepćuće svjetlo na vašoj peći pomoći će vam u navigaciji kroz sljedeće moguće probleme koji imaju moguće jednostavno rješenje.

5. Provjerite ima li začepljenja

Problemi s prekidačem pritiska peći

Ponekad malo crvenog svjetla označava otvoreni prekidač tlaka, što često znači začepljenje dimovoda / dimnjaka. Moguće je i da je tlačna sklopka loša, ali prije nego što to odlučimo, pogledajmo je li dimnjak blokiran. Poznato je da se ptice i druge male životinje nastanjuju u dimnim kanalima kada je posebno hladno. Provjerite postoji li ovo (i / ili zaleđivanje) izvedbom sljedećeg:

  • Uklonite cijev za dimnjak s vrha peći da vidite ima li što unutra. Ako imate peć visoke učinkovitosti, to može biti teško, ali životinje su manje vjerojatne za vas. Također provjerite vani kako biste bili sigurni da su krajevi cijevi slobodni i da nisu zaleđeni.
  • Provjerite radi li mali ventilator zakačen za dimovod (indukcijski ventilator). Ako ne, vjerojatno će vam trebati servisna tehnologija.

NEMOJ ustanite na krov da provjerite dimnjak, osim ako to niste potpuno sigurni i ugodno. Ne vrijedi riskirati jer obično problem nije gore. Povremeno će ptice saviti gnijezdo u dimnjaku, ali ako ove zime do sada niste imali problema, to vjerojatno nije vaš problem. To je nešto što postaje očito u ranoj sezoni grijanja.

6. Provjerite paljenje peći

Ovo je jednostavno:

  • Pazite i slušajte svoju peć dok ona počinje ciklus. Neposredno prije nego što čujete kako se otvorio plinski ventil, trebali biste vidjeti kako upaljač s vrućom površinom počinje svijetliti ili začujete klik, klik, klik vašeg upaljača. (Možda ćete čak i vidjeti ovu iskru.) Ako te stvari ne vidite ili ne čujete, peć će zaustaviti ciklus.
  • Ako vam kontakt ne radi, plinski ventil neće ostati otvoren dok ne zamijenite kontakt, jer senzor plamena govori ventilu da plin nije upaljen.

BILJEŠKA: Dio za paljenje može biti nezgodan jer bi mogao biti prekidač pritiska koji ga neće pustiti da svijetli, pa ćete možda morati izvršiti neke provjere na tom prekidaču kako biste bili sigurni što uzrokuje problem.

  • Ako upaljač svijetli ili iskre, provjerite je li plin uključen. Bio sam na pozivima kad su djeca koja se igraju oko peći okretala gumbe i prekidače, što je roditelje koštalo tuge i oko 150 dolara, pa budite sigurni da je i gorivo uključeno.
  • Ako paljenje radi, ali se plinski ventil nije otvorio, sklon sam pozivu tehničara za grijanje i hlađenje da radi s plinskim ventilom. Ovo nije jednostavan popravak i može dovesti do opasnih problema ako se ne izvede pravilno.
  • Ako imate pilot svjetlo, provjerite je li njegov plamen zapaljen. Ako ne, ovo je vjerojatno vaš problem. Pokušajte ga ponovno osvijetliti. Za jednostavan vodič o tome (sa slikama), pogledajte moj članak o tome kako upaliti stari pilot bojlera. Ako ne svijetli, vjerojatno vam treba novi termoelement. Oni su jeftini i mogu se kupiti u većini trgovina hardverom. Samo izmjerite koliko vam vremena treba prije nego što krenete.

Plamen peći koji se gasi

Ako vaša peć upali plamenike, a zatim se isključi samo nekoliko sekundi kasnije, to je gotovo sigurno greška senzora plamena. Ovo je jedan od najčešćih problema s kojima se suočavaju vlasnici kuća.

Čišćenje i / ili zamjena senzora plamena jedan je od najčešćih i najjednostavnijih popravaka grijanja i klimatizacije koje se mogu izvršiti. Bez sumnje biste trebali sami pokušati prije nego što nazovete HVAC tehničara.

7. Znajte kada nazvati stručnjaka za HVAC

Osim predmeta o kojima smo razgovarali, postoji još mnogo stvari koje bi mogle pogriješiti u vašoj peći. Gore sam identificirao jednostavne popravke, a ako još uvijek niste dijagnosticirali problem, više petljanja može složiti problem i trošak. Iako možda ne želite, trebali biste razmotriti poziv profesionalnog HVAC tehničara.

Molimo vas da shvatite da svaki put kada radite s peći postoji određena opasnost koja zahtijeva vašu pažnju i brigu. Nikad ne izvodite radove na peći ako niste sigurni u što ulazite i ako ste poduzeli sve sigurnosne mjere predostrožnosti s plinom, električnom energijom i oštrim rubovima.

Nadam se da smo uspjeli riješiti vaš problem, ali ako ne, barem ćete puno bolje razumjeti svoju peć, što će vam pomoći u predstojećem pozivu na servis. Bit ćete vrlo informirani kupac kad dođu kucati.

Pitanja i odgovori

Pitanje: Nakon što peć radi u praznom hodu, često (75%) neće pružati toplinu kada termostat naruči. Što se događa kada ne radi: - termostat postavlja narudžbu - ventilator se pokreće - površinski upaljač počinje svijetliti, a zatim potamni - ventilator nastavlja. Lijek koji djeluje u 100% slučajeva: - isključite prekidač s vanjske strane peći - pričekajte 30-60 sekundi - uključite prekidač - peć radi u redu do sljedećeg dugog praznog hoda. Ideje?

Odgovor: Zvuči jako poput tlačne sklopke. Pogledajte da li ovo pomaže. https: //dengarden.com/appliances/Everything-You-Ne ...

Pitanje: Crveno svjetlo na mojoj peći ostaje čvrsto? Ima li prijedloga?

Odgovor: Trebali biste imati tablicu koja objašnjava kodove crvenog svjetla. Prema mom iskustvu, crvena crvena znači da jedinica ima snagu i čeka zapovijed.

Pitanje: Moja je situacija da se neće uključiti dok ne dodirnem / povučem određene žice i tada će raditi sve dok se držim, ali kad je pustim, isključuje se i prikazivat će kodove pogrešaka (trepćući led ). Je li ovo samo upravljački modul?

Odgovor: To može biti ili može biti sam uprtač / konektor. Ovi se pinovi / konektori ponekad olabave i uzrokuju ovu vrstu problema.

Pitanje: Preskočio sam tlačnu sklopku jer se cijev neprestano puni vlagom. Što bi moglo uzrokovati ovo?

Odgovor: Nepravilno odzračivanje najčešći je uzrok viška vlage. Ne mogu reći što može biti neprikladno, ali to je obično slučaj.

Pitanje: Puhalo će se isključiti na kraju toplinskog ciklusa, a zatim će raditi još 3 sekunde. Što može uzrokovati isključivanje puhala moje peći?

Odgovor: Puhalica uvijek nastavlja raditi sve dok se temperatura u izmjenjivaču ne isprazni i zadovolji ograničenje. Ovo je normalno.

Pitanje: Imam peć na plin Lennox iz 2003. godine, prisilnu zračnu peć. Plin gori, ali puhalo djeluje samo ponekad. Tvrtka HVAC kaže da trebam novu peć ili novu matičnu ploču i prekidač tlaka zraka. Moj je sin napravio dijagnostički test iz priručnika i ne vidi da mi treba nešto više od novog releja. Kakvo je vaše mišljenje, molim vas?

Odgovor: Ne znam što je Lennox dizajn iz 2003. godine, ali ako testiranje pokaže da je relej ventilatora loš, svakako bih ga probao prije veće kupnje jer nisu toliko skupi.

Pitanje: Naša se peć uključila, ali se neće zapaliti dva puta u proteklih tjedan dana. Kada ga resetiramo ručno u prekidaču, to ispravno radi. Imate li ideje što bi moglo biti pogrešno?

Odgovor: Postoji nekoliko dijelova u peći koji mogu ili proći loše, ili jednostavno raditi ono što su trebali učiniti zbog nečega što se dogodilo u tom trenutku. Senzor prljavog plamena može biti isprekidan, pa ga je čišćenje neophodno ili će postati učestaliji. Možda se tlačna sklopka pokvari, ili je možda loš trenutak poslao propuh ili kroz dimovod, što može prevariti prekidač da pomisli da ne postiže pravi pritisak. Ako se to dogodi više od nekoliko puta u tjednu (pod pretpostavkom da nema jakih vjetrova), možda ćete ga htjeti zamijeniti prije nego što sve krene zajedno. To su česte pojave koje je lako provjeriti ili popraviti.

Pitanje: Moja peć ostat će upaljena negdje između 30 minuta i nekoliko sati, ali tada će se isključiti i prikazati kod za zaključavanje. Trebam li očistiti senzor plamena?

Odgovor: Iako ne škodi pokušaju čišćenja senzora, nisam siguran da je to vaš problem. Obično jedinica iz bilo kojeg razloga zakaže tri puta prije nego što se zaključa, pa bih pokušao vidjeti što se događa prije toga. To bi vam moglo dati bolju predodžbu o tome gdje se u ciklusu događa kvar.

Pitanje: Imam Lenox prisilnu plinsku klimatizaciju / peć koju ventilator pokreće, ali puše samo hladni zrak. Dali smo ga provjeriti, a oni su rekli da je to modul za upravljanje paljenjem jer se nije palio. Zamijenili smo ovaj komad i još uvijek ne svijetli. U čemu bi još mogao biti problem?

Odgovor: Upaljač je ono s čime bih započeo.

Pitanje: Zašto plamen ostaje upaljen kad je peć isključena?

Odgovor: Pilot svjetlo (mali plamen) uvijek ostaje upaljeno ako je to ono što vidite. Ako su to plamenici, onda sam to vidio samo na prilično starim jedinicama, ali nema dovoljno informacija da bih mogao ponuditi više informacija osim što to ne bi trebao činiti, pa biste ga trebali pogledati.

Pitanje: Jutros sam se probudio u hladnoj kući. Otišao sam do peći, isključio je, provjerio filtar i bilo je u redu. Skinuo sam poklopac da bih pogledao upaljač dok sam ponovno uključivao napajanje. Ventilator se pokrenuo, aktivirao se upaljač i čuo sam kako se otvorio ventil za plin, a zatim ništa. Upaljač se isključio i on je prošao još dva puta. Peć je Goodman i bacila je kôd pogreške (1). U čemu bi mogao biti problem?

Odgovor: Pod pretpostavkom da je plin uključen, u početku bih provjeravao tlačnu sklopku, ali postoji mnogo mogućnosti na temelju informacija bez pokretanja nekih ispitivanja.

Pitanje: Moja peć je dobro radila do ovog vikenda. Uključio sam termostat, pozvao grijanje. Ništa! Vratio sam ga ručno iz prekidača. Ništa! Upravo sam zamijenio filter. Kad zazovem toplinu, motor puhala se uključi, upaljač NEĆE svijetliti. Isprobao sam upaljač, on je svijetlio. Već sam očistio senzor plamena. Što bi, pobogu, moglo spriječiti rad jedinice?

Odgovor: Na pločici treba svijetliti lampica koja trepće kako bi vam otprilike rekla gdje potražiti problem. Budući da puhalica odmah započinje, nešto nije uspjelo. Možda ploča ili induktorski motor jer se to događa prije nego što jedinica uopće pokuša upaliti.

Pitanje: Imam Intertherm peć za samozapaljivanje. Upravo sam kupio kuću i klima uređaj radi, ali ne i grijač. Tako sam dobio novu tlačnu sklopku, ali još uvijek nemam kontakt. Zato sam malo dublje otkrio i našao jako loš upaljač, poput izgorjele keramike i otopljenih stvari. Zamijenio sam to i još uvijek nema vrućine. Čujem klik kao da se ventil mora otvoriti i osjećam miris plina kad se otvori, ali čini se da se paljenje ne zagrijava. Gubim se. Upravljačka ploča ima svijetlu crvenu LED diodu što znači da je kontrola u redu. Kako bih dalje mogao riješiti problem paljenja peći?

Odgovor: Pa, htio sam reći kontrolna ploča i iako ona kaže da je ok ako nije, može reći bilo što. Provjerite postoji li napon na žici za paljenje.

Pitanje: Kako znati kada je vaša pločica na jedinici za grijanje i klimatizaciju neispravna?

Odgovor: Tipično ćete vidjeti lošu ili nikakvu snagu koja ide od točke A do točke B. Međutim, postoji puno A-a i B-a, tako da stvarno morate znati što testirate. Postoje neke "zastavice" koje vam mogu dati dojam da je loše, ali električno ispitivanje je jedini pravi način.

Pitanje: Peć se pali, a zatim gasi. Na temelju vašeg članka, senzor plamena je loš. Zamijenio sam senzor i sada mi flash kod govori da postoji problem s upaljačem. Zašto upaljač pali vatru, ali se i dalje gasi?

Odgovor: Možda je problem u ploči, ali ne mogu reći bez pokretanja testova.

Pitanje: Moj upaljač peći svijetli vruće, ali plamen se ne uspijeva zapaliti. Međutim, ako resetiram prekidač za napajanje, svjetla peći i zagrijavaju kuću pravilno tijekom jednog ciklusa. Bi li neispravna tlačna sklopka dopustila rad ovog jednog ciklusa?

Odgovor: Da, to bi itekako moglo biti. Tlačne sklopke mogu biti "fini" i ne moraju se uvijek samo ugasiti. Mogu se ponašati smiješno, a zatim ponekad i umrijeti.

Pitanje: Imam plinsku peć Nordyne m1mb 070a aw. Na mojem termostatu sve radi u redu. Moja je peć uključena na plin, gori sada crveno svjetlo na ploči nije na žicama na peći su vruće jer su iskrile bijelo, ali nema crvenog svjetla što se ne uključuje ili čak pokušava pokrenuti. Što se dogodilo?

Odgovor: ovo može biti transformator, osigurač, ploča ili sve 3.

Pitanje: Imam Luxaire peć i kad radi, radi u redu, ali svaki drugi dan moram je resetirati jer se upaljač neće upaliti. Već sam ga zamijenio i ponovio sinoć. Na peći imam malu ikonu plamena. Što bi moglo uzrokovati da se potpuno novi upaljač samo povremeno ne zapali?

Odgovor: Upaljač napaja ploča, pa je to jedna mogućnost, ali ako svijetli i jednostavno ne pušta plin, to je drugo pitanje i ima nekoliko mogućnosti.

Pitanje: Ako moja tlačna sklopka u peći radi, ali još uvijek nema iskre, što onda?

Odgovor: Ako nedostaje iskra, to bi vjerojatno bio upaljač ili modul iskre. Da biste to utvrdili, potrebno je testiranje, osim ako samo bacite kocku i zamijenite jednu pa drugu ili obje. Imajte na umu da to ne mogu garantirati, ali to su uobičajeni kvarovi koji imaju ovaj simptom.

Pitanje: Moja se peć nakon ljeta nije uspjela uključiti. Moj je stručnjak rekao da je to sklop i upravljačka ploča. Zamijenio ga je, ali peć nije gorjela. Samo je brujalo. Imate li kakvih misli?

Odgovor: Iako ne mogu reći što nije u redu, mogu reći da bih nazvao profesionalca i natjerao ga da to ispravno popravi.

Pitanje: Ako je pločica loše, bi li peć uopće radila? Moja peć ponekad dobro funkcionira, ali nekoliko puta dnevno, obično usred noći, ispuhuje samo hladni zrak. Dvije tehničarke rekle su mi da je pločica u redu, ali treća je tehnička ploča rekla da je loša. Molim pomoć!!

Odgovor: Ploča može prouzročiti čudne stvari jer ima kontrolu. Kad ide, peći mogu raditi s prekidima. Međutim, ne dijagnosticiram vaš problem. Samo odgovarajući na vaše pitanje da, loša ploča još uvijek može dopustiti da peć radi povremeno.

Pitanje: Ovaj mi se račun udvostručio ovog mjeseca. Moja će se peć pokrenuti i dovesti je na željenu temperaturu, kliknuti će i prestati puhati vrući zrak, ali i dalje puše. Zatim će kliknuti ponovno kada se treba ponovno zagrijati. Imate li prijedlog?

Odgovor: Čini se kao da ventilator radi puno radno vrijeme ili zato što ste ga postavili na "ventilator" ili to uzrokuje kratki spoj. Usprkos tome, radim svoje puno radno vrijeme i to uopće nema puno utjecaja na moj račun, pa vam se možda motor pokvari i privuče veliku amperažu.

Pitanje: Provjerio sam dimovod s krova vrtnim crijevom do prostora za puzanje i jasno je. Također sam zamijenio tlačnu sklopku originalnim dijelom proizvođača. Manometar zatvara prekidač na .68 IWC i otvara se na .58, ali ovdje je moje pitanje, zašto ne dobijem 24 volta nakon što se moja tlačna sklopka otvori i kako dobiti potrebnu opskrbu od 24 volta?

Odgovor: Nećete dobiti 24v ako ne zahtijeva toplinu. Pretpostavljam da biste morali dodirnuti donju stranu transformatora, ali radije bih da testirate otpor.

Pitanje: U peć ide struja, ali indikatorska lampica ne radi. Što to znači?

Odgovor: Vjerojatno je riječ o lošem transformatoru ili ploči, ali to ne može biti sigurno bez testiranja.

Pitanje: Moja vanjska jedinica klima uređaja funkcionira i šalje hladni zrak u peć, ali unutarnji motor puhala ne dobiva snagu. Osigurač je u redu, a svjetlo svijetli stalno. Što bih još trebao provjeriti?

Odgovor: Puno je mogućnosti. Napisao sam neke druge članke koji bi vam mogli pomoći da to suzite. Čudno je ako je to radilo za grijanje i čini se da sve ostalo radi, ali ne i ventilator za AC. To može biti loša veza ili problem s pločicom ili stat.

Pitanje: Samo sam morao zamijeniti upaljač u mojoj peći. Paljenje ima uprtač, ali sama peć nema. Mogu li ga spojiti bez kabelskog svežnja i spojiti žice? Ako da, koje se žice s kojim povezuju? Peć ima crno-bijelu žicu, ali same žarilice obje žice su bijele

Odgovor: Da. U međusobno ih možete povezati, a u ovom slučaju neće biti važno koja je to žica. Samo nemojte spajati oboje s jednim ili sve zajedno. (Vjerojatno to ne bih trebao reći, ali iznenadili biste se što sam vidio kako ljudi rade.)

Pitanje: Čini se da moja peć ne dobiva plin. Uopće ga ne osjećam. Što bi mogao biti uzrok tome?

Odgovor: Zaista ne biste smjeli osjetiti miris plina u svojoj peći. Ako mislite na glavnu liniju koja dolazi, problem je izvan peći.

Pitanje: Iz moje peći ne dolazi nikakvo svjetlo napajanja ili nikakvo svjetlo, ali čujem zvuk kao da se želi upaliti, ali ništa se ne događa? Što mogu učiniti?

Odgovor: Čini se da imate moć, ali prvo bih to provjerio. Brujanje je vjerojatno transformator ako je prilično tiho brujanje (ne brujanje motora). Provjerio bih osigurač na ploči. To je vjerojatno osigurač tipa 3 amp. Ako je to dobro, provjerio bih napajanje i od transformatora, (120v u 24v van). Ako je sve točno, naginjao bih se prema ploči loše, ali to zapravo ne mogu potvrditi a da nisam tamo.

Pitanje: Imam peć s upaljačem, a pilot se ne pali. Ako ručno upalim (svijetli papir i stavim ispred pilota), plamenici će se upaliti i peć će raditi 20 minuta, a zatim se isključiti prije postizanja zadane temperature. Ako samo pokušam pokrenuti peć bez ručnih smetnji, uključi se induktor, čujem klik, ali ne vidim iskru iz plamenika ili čujem više klikova. Je li vjerojatno pilot modul problem i ako da, kako testirati modul?

Odgovor: Testirate kako biste vidjeli je li upaljač iskra dobivao odgovarajući napon s ploče. Ako ne, to je ploča, a ako da, to je sama iskra.

Pitanje: Imam Rheem Upflow visoko učinkovitu dvostupanjsku plinsku peć iz 2009. godine. Dio je serije GRM, model # RGRM-07EAMES. Motor puhala je prestao raditi. Ima motor GE ECM 2.3, rep. # 51-24374-28. Sve žice su dobre, nema kratkih spojeva ili pokidanih žica. Osigurač na glavnoj ploči je u redu. Skinuo sam modul s motora ventilatora. Pregorio je osigurač od 2 ampera na pločici. Što bi moglo uzrokovati ovo? Da li bi to bila još jedna komponenta na motornom modulu? Mogu li lemiti osigurač od 2,0 amp tamo gdje je bio rad tiskane ploče?

Odgovor: Ne mogu iskreno reći jer to nije popravak koji sam ikad pokušao ili me tražili. Jedno mogu reći da ako je jedinica registrirana, tada biste i dalje trebali biti pod garancijom. Prije nego što prođem kroz sve to, našao bih se na Rheemovoj stranici s jamstvom i pokrenuo serijski broj. Novi modul bi bilo najbolje riješiti ne samo osigurač, već i osnovni problem koji ga je prouzročio, jer također znam da velika većina motora nikada ne otkaže, ali moduli to rade.

Pitanje: Imam Miller model peći # M7RL 072A AW. Induktorski motor radi pretjerano, unutarnji ormar je vrlo topao i peć se neće zapaliti. Ne bi li temperaturni senzor dopustio paljenje ako je temperatura u području upravljačke ploče vruća nego inače?

Odgovor: Ako je prekidač gornje granice isključen, puhalo će raditi sve dok temperatura ne padne na dopušteni raspon, a zatim pokušati ponovno zapaliti.

Pitanje: Uređaj se uključuje, ali ventilator puhala neće se pokrenuti ako ga ne pokrenem ručno, a onda se fino ispravi dok se peć ne odsiječe, a zatim ponovno pokrene. Tada moram ponovno pružiti ruku ventilatoru, može li biti da je motor ventilatora prljav i samo ga treba očistiti?

Odgovor: Nadam se da za to koristite nešto osim svoje ruke, ali zvuči poput kondenzatora ako se to događa. Najčešće montiran na prednju stranu kućišta ventilatora.

Pitanje: Jesu li žarnice iste kao i upaljač? Nema zvuka klikanja i plamen se neće zapaliti.

Odgovor: Možda imate problem s tlačnom sklopkom. Pogledajte može li vam ovaj članak pomoći. https: //hubpages.com/home-improvement/Everything-Y ...

Pitanje: Imam Gilbertovu peć i induktor radi. Upaljač blistavo svijetli. Ventil za plin nije se uključio da bi stvorio plamen kad je vani hladno, poput nule. Otkriva li senzor plamena vruć površinski upaljač? Ili nešto drugo uključuje plinski ventil?

Odgovor: Izvrsna razgradnja informacija! Dakle, sve što mogu je suziti, ali ovako bih postupio. Prvoosumnjičeni, tlačna sklopka. Možete testirati voltmetrom kako biste bili sigurni da se zatvara nakon što upaljač počne svijetliti. Ili tako što ćete je iskočiti i vidjeti hoće li tada pucati. Ako nije, provjerite ima li začepljenja dimnih kanala i preslušajte induktor da vidite zvuči li sporo ili nešto tamo unutra. Ako ne, mogao bi biti plinski ventil. Ispitajte dolazi li mu napon. Ako ne, sumnjam na ploču. Imajte na umu da je ovo samo postupak, a ne dijagnoza. Važan je voltmetar i znanje o tome što radite s njim. BUDI SIGURAN! Ne radi ništa što ti nije ugodno.

Pitanje: Što naznačuju na peći nosači četiri zelena trepćuća svjetla i dva žuta trepćuća svjetla?

Odgovor: Na jednom od vrata peći ili u priručniku za ugradnju trebala bi biti tablica s kodovima koja će vam reći što to znači. Nisu sve marke i jedinice iste, pa mi je žao, ne znam odjednom što vam želi reći.

Pitanje: Zašto moja puhala radi kad je T-stat isključen?

Odgovor: Ako je sve isključeno, onda morate imati kratki spoj u stat žici.

Pitanje: Zašto je peć počela udarati i mirisati poput sušila za kosu?

Odgovor: Moja početna misao je motor ventilatora ili kotač ventilatora. Vizualno bih pregledao to područje kako bih bio siguran da se ništa nije usisalo u ventilator i da kotač ventilatora nije slomljen / klimav / trljajući se. Obavezno isključite jedinicu prije stavljanja ruku tamo.

Pitanje: Zašto moj grijač puše hladni zrak?

Odgovor: Nešto nije uspjelo i puhalo pušta prema zadanim postavkama, najvjerojatnije.

Pitanje: Kako mogu znati je li plinski ventil uključen ili nije? Mora li prekidač biti ravno gore-dolje ili bočno?

Odgovor: Ako je ručka ventila "u ravni" s cjevovodom, tada je otvorena / uključena. Ako je okrenut bočno u smjeru cijevi, zatvara se / isključuje.

Pitanje: Moja peć Comformaker prikazuje četiri flash koda. Zamijenio sam graničnu sklopku. Zašto se ne pali?

Odgovor: Ne znam što znači četiri flash koda jer se kodovi razlikuju ovisno o marki. Tlačna sklopka samo potvrđuje da induktor pravilno odzračuje. Samo zato što kôd bljeskalice (ako je rekao prekidač tlaka) kaže prekidač tlaka, to ne znači da je prekidač loš, već samo zato što ne dopušta da peć svijetli. Dakle, može biti loše (što se čini da nije bilo otkako ste ga zamijenili) ili može doći do začepljenja dimnjaka, motora je loše ili ide loše i još nekoliko manje vjerojatnih mogućnosti. Električno ispitivanje kruga pomoglo bi ako znate koristiti voltmetar i pokrenete ove testove kako biste potvrdili u čemu je točno problem.

Pitanje: Moja je peć prestala raditi. Motor puhala pokušava se pokrenuti (polako). Nema plamena ili paljenja. Bi li to bio kondenzator?

Odgovor: Peć bi se trebala pravilno pokretati do točke puhala koja se uključuje prije kvara, pa ako je kondenzator loš, mislim da to nije jedino pitanje.

Pitanje: Prije dva mjeseca dodao sam AC u peć, ali sada vrućina ne radi. U čemu bi mogao biti problem?

Odgovor: Moglo bi biti puno stvari, ali pod pretpostavkom da je peć prije dobro radila i da je klima radila ispravno i da nisu napravljene nikakve druge promjene, ne znam kako to objasniti. Blokada bi utjecala i na klima uređaj. Možda su promijenili postavku brzine ventilatora kad su je postavili.

Pitanje: Paljenje na mojoj peći svijetli jako, ali čini se da ne svijetli. U čemu bi mogao biti problem?

Odgovor: Ako vaša peć trepće kodom, usporedite je s grafikonom u korisničkom priručniku (možda ćete to moći pronaći na mreži) ili, vjerojatno na peći postoji grafikon koji će vam reći što znače različiti kodovi.

Pitanje: Statusno svjetlo na mojoj peći Intertherm se ne pali. Imam struju koja ide na pločicu, ali čini se da nema snage na motor ventilatora ili bilo gdje drugdje. U čemu bi mogao biti problem?

Odgovor: Možda ima pregorjeli transformator ili je možda mogao pregorjeti mali osigurač od tri pojačala koji je često na ploči. Možete jednostavno vidjeti je li taj osigurač pregorio tako da ga jednostavno uklonite i pogledate.

Pitanje: Imam ts jedinicu nosača. Usred noći je stalo. Imam žuto svjetlo koje treperi, a ne crveno. Ako uključim ventilator, on radi. Dakle, dobiva snagu. U čemu je problem?

Odgovor: Možda je bila slučajnost ako to nije uobičajena pojava. To se ponekad dogodi.

Pitanje: Pali se plamen ili minutu. Zamijenio sam senzor plamena i upaljač, ali i dalje radi istu stvar. Ovo je s pametnim ventilom za medene bunare. Ima li prijedloga što bi moglo uzrokovati ovo?

Odgovor: Pa budući da ste zamijenili senzor, provjerio bih hi limit ili ploču. Možda je jedan od njih krivac. Morao bih provesti električna ispitivanja kako bih to potvrdio.

Pitanje: Imam HE plin Lennox 92AF1UH koji kao da curi iz kolektora ispušne vlage (nije tehnički izraz). Kad smo ga otvorili u početku, filter je bio potpuno preplavljen i pljesniv. Puhali smo crijeva i sve isušili, ali i dalje se nakuplja vlaga nakon njegovog rada. Jedinica je stara pet godina. Neka ideja?

Odgovor: Iako je vodi teško pratiti izvor / problem putem interneta, mogu reći da 5-godišnji Lennox možda još uvijek ima jamstvo za dijelove, pa ako nabavite tehnologiju, možda ćete morati platiti samo radnu snagu. Vaš izmjenjivač topline definitivno ima jamstvo ako je u pitanju problem.

Pitanje: Zimi sam zamijenio prekidač paljenja u peći. Now, we are using the A/C and the blower is continually running in OFF/ON/Auto and the electronic ignitor is trying to light. I thought the blower problem was a Relay/Limit Switch, but would that also cause the ignitor to spark constantly?

Odgovor: There has to be something wrong with the wiring or the circuit board is shot. There is no other way a furnace would try to fire when in a/c mode. The fact that the blower is running full time regardless of mode tells me it's more likely the board.

Pitanje: Our furnace will run, and after a few minutes the thermostat shuts off, comes back on, and a few minutes the furnace will shut off and then back on. My thermostat is connected to the C on the mainland, so I know the circuit board is restarting. Top of core looks fine, but I can't figure out if my secondary is cracked? It was installed in 2001.

Odgovor: I would need to run some tests to figure out why your unit is kicking off and on or witness what part of the cycle it's stopping. As for the heat exchanger, you'd probably need to have someone run a smoke or CO detection test and you're likely still to be under a parts warranty. Get a CO detector to be safe.

Pitanje: I have a Payne furnace which is no longer firing. The igniter relay is fine and the ignitor is glowing bright orange, but I get no voltage at the gas thermocouple solenoids, expecting 24vac but nothing, so no gas flows and no fire. Am I looking at a main board failure for my furnace or is there a sensor that might prevent the board from putting out voltage?

Odgovor: I would take a look at the pressure switch first. It can cause this type of behavior.

© 2014 Dan Reed

Phyllis Celli 9. srpnja 2020 .:

You have an excellent questions & Answers page!!! I live in an apartment complex and my heating system is right in the middle of our living space, etc, This heater/air-conditioner is so very very loud & disturbing - Other than reporting to Maintenance, it was stated that these P&N WeatherKing Heaters are Loud. I BEG you to please help/aide me-it is extremely bothersome - other units like mine are the same.....Kindly comment and make suggestion!!!! THANK. VAS

Charisse Anderson-Wolfe on June 18, 2020:

I have no power to my furnace or thermostat? My ac wasn’t working and my husband put in basically all new parts, now the thermostat won’t come on and nothing happens. He put a new control module on the heat, because the tech said it was going out last winter. Don’t know what to do? No power to our Coleman Forced Air Furnace. Please help!!!

Kay Baker. M on March 01, 2020:

My furnace is clicking on but the auto fan does. Not come on

Mike L on January 17, 2020:

"My Goodman gas furnace blows a fuse as soon as the burner lights. What would cause this?"

Has there been any feedback from the original question, my goodman is doing the same thing, and if not where would be a likely place to start 1st, any suggestions would be very helpful.

Dominic 15. listopada 2019 .:

Hi i have a goodman its flashing red light. 4 flashes what does it mean

TIM OCONNELL 02. listopada 2019 .:

If have power coming out of the on off switch on my furnace and the 5 amp fuse is still good, why wont the green indicator light come on? Furnace acts like its dead.

Robert Estrada on August 10, 2019:

I have a old ruud unit 1994 and i the light that says power is not on. I tried looking for fuse but it dosen't seem to have one. I have no power going to the circuit board. It was running earlier but sounded like it was struggling then turned off. I checked breaker and nothing.

Je on June 03, 2019:

I have a new furnace and the inducer will kick on and off while in cool mode

Chuck on May 18, 2019:

My problem is when I went to start.my air for the first time this season,not sure what happened nut now no furnce and the air did not come on, would appreciate and input, Thanks..

Brett Winter on May 16, 2019:

I recently added an a/c to my gas furnace. When I hooked up the extra wires for the a/c, the furnace would no longer work for heating. The small fan kicks in and the furnace lights but then the burner trips and the big furnace fan starts up. If I disconnect the a/c wires the furnace works fine again

James on May 07, 2019:

Thermostat seems to be working fine. Turn heater on but no glow on the ignitor. Checked ignitor seems ok. Fan constantly runs but nothing else happens. I'm stumped

Gioia Smith on May 03, 2019:

I'm trying to find out how to thermostat is staying on 88° red lights are flashing on the side how do I get is turned off

Sherri on February 24, 2019:

Thank you for posting this and allowing us in on your valuable experiences and expertise. I think it has helped us fix the problem on a Sunday as well as calling a local HVAC guy! We appreciate your help via Internet!! God bless!

Eric L 29. siječnja 2019 .:

Hi, Dan. Thanks for your straight-forward troubleshooting tips - they are VERY helpful. I've run into an issue on our furnace (model Nordyne G6RA120C-20) where the red light says the "pressure switch stuck closed", not open. There are no blockages in our flu, I replaced the filter (just in case), cleaned the flame sensor (for good measure), and removed the pressure switch to see if it was obstructed or visibly stuck in some way (9300-V-0.55-DEACT-N/O-VS). I could hear the mechanism inside moving, hooked it back up, and it worked once for about 10 minutes. Now it's back to the same routine - vent motor comes on, click, ignitor comes on, click, ignitor goes off, red light flashes the "pressure sensor stuck closed" error, and tries again a few times. We have a very dry basement and I don't think it has to do with water, but I'm guessing the pressure switch is bad. Any thoughts on a "stuck closed" error like this?

Ray on January 07, 2019:

I have a goodman up draft air & heat sys , what is going on is I set the temp like at 72 the heater comes on and runs for about 10 to 13 min and the temp on the thermostat reads 72 the sys shuts off then I can hear the vent blower come on as soon as everything had turned off it runs and then the burners come back on again and everything runs again for about 10 min.Is this normal I don't think it dose it every time like this but a few times it dose and even it cycles 3 times and runs for about 10 min. I have a nest thermostat dose it have something to do with the way that type of thermostat acts ?

Nick P on December 22, 2018:

I have a variable speed 2 stage AS furnace. Lately I haven't heard the furnace kick into the 2nd stage. I tried to test it by setting the thermostat higher about 15 degrees and waited almost a half hour and it never kicked into stage 2. It remained on low flame stage 1. Can there be something preventing the furnace from kicking into the 2nd Stage?

Dan Reed (author) on December 04, 2018:

SG - While I can't say for sure without being there and testing, a blown transformer could be the issue. Since it's pretty cheap, it might be worth trying before saying it's the board. Really, you should run some tests with a voltmeter to pinpoint the problem and avoid spending money that you might not need to.

SG on December 03, 2018:

I have a Goodman GPG1360140M41AD. It was working fine and then it blew the 3amp fuse on the control board. I checked all the wires and replaced the thermostat and replaced the wire from the thermostat to the furnace. It first began to recycle and not ignite and now it blows the fuse once it tries to ignite. So it was not the thermostat. Can a dirty flame sensor cause this issue or should I replace the control board.

Dan Reed (author) on November 26, 2018:

Thank you Mark! I really appreciate the feedback. I take a beating sometimes from guys who feel I'm taking business away from them and well, I suppose I do, but my intent is to help those who can't afford to pay $150 or more to come clean a flame sensor. While I don't intend to take work from people my loyalty is to those who want to be warm and not at the cost of their family's Christmas when the fix is simple. I'm glad you see that. I hope this and other articles never have to come in handy for you but if they do, I'm glad I can help. Best wishes to you and yours.

Mark J 25. studenog 2018 .:

Dan - you, and guys like you, that post basic knowledge like this are freakin' awesome. I can't tell you how much it is appreciated from a layperson's (non-HVAC technician) perspective. I'm more that happy to get on a professional's schedule and pay them to come out and fix an issue - but your type of posting really helps to cut down on the "duh" service calls - and that is extraordinarily helpful. Thank you sir.

Dan Reed (author) 24. listopada 2018 .:

Rich - The pressure switch clicking when you blow/suck on the tube doesn't mean it is working properly. It does sound like that may be the issue still.

Rich A on October 23, 2018:

Dan- My furnace is attempting to start the motor starts for about thirty seconds and shuts off. I checked the pressure sensor manually by blowing into the hose and can hear it opening. The furnace itself is giving code of "Pressure switch stuck open". It's my understanding often times you get a pressure switch error but the problem is other components. The ignitor does not appear to light whatsoever, I hear no clicking, smell no gas. As far as I can tell there is no obstructions in the flue. Ima li ideja? Im guessing the ignitor or flame sensor could be faulty.

Dan Reed (author) on October 23, 2018:

Jenn - While I can't be sure of the issue it does sound like a pricey repair for a 17 year old furnace. $1000 is a nice down payment on a new unit and there is no repair I can think of that would cost that much unless it was to replace a heat exchanger (which again, I would rather do a furnace for that money) or a complete overhaul of the parts there which makes me leery that he doesn't know what the problem is so just decides to replace everything. Sadly, these "part changers" are out there. Please get a 2nd opinion.

Jenn Alb on October 22, 2018:

We have a natural gas forced air furnace-17 years old. When I turn it on, it will light, heat, and blow hot air until it hits temperature and shuts off. When the temperature drops a degree and it should go back on and heat, it will click back on--it will click to start, you can hear it trying to go-then it does not light. The blower goes on anyway and begins to blow cold air into the house--which then makes the thermostat temp drop and it just stays on blowing cold. In order to get it to work again-I have to shut it off at the thermostat, wait at least 90 minutes or so, and then turn it back on. It heats nicely--will superheat to 78 degrees if I let it (we did this last winter to give more time with it off on cold days). HVAC told us $1000 to fix--but I think that can't be right since it still works fine--I am thinking gas valve or thermocouple. My husband is handy, rebuilt outside air conditioner, replaced anode rod in water heater, replaced fan on water heater, etc... but afraid of messing with gas esp. since my son's bedroom is in basement near furnace.

Any suggestions Does that sound like a rip-off for repair?

Hvala!

Dan Reed (author) on September 28, 2018:

Penny - If the stat is off then you shouldn't have heat but is the fan set to "on"? That would allow the fan to just simply run like a fan and only call for heat/cool when necessary. If everything at the stat is off then you must have a short circuit somewhere in the stat wiring or control board. You may need a tech to do electrical tests to be sure.

Dan Reed (author) on September 28, 2018:

Tracy - While I'm not sure what the cause is, it's not normal and likely not the blower's fault but something else causing it. Bad voltage, filters not being changed regularly, improper duct size starving the motor for air...there are a lot of possible causes but this is what I'd be checking for.

Penny Escalante on September 27, 2018:

My furnace blower is running but not blowing out heat, my thermostat is off, what do I do?

Tracy G on September 27, 2018:

Hi Dan, We have replaced the blower on our gas furnace the last two years. After it is replaced, it works fine for the rest of the winter, then when we try to use the furnace come the next winter it won't work again. This will be the third year we will have replaced the blower. Any idea why this would happen?

Dan Reed (author) on September 23, 2018:

Brad W - Unfortunately there isn't enough information for me to help. Maybe the stat is bad? Maybe a limit? Oprosti.

Brad W on September 22, 2018:

Hi Dan, I have a forced air coleman furnace that only works when the thermostat is turned all the way up and only runs for a few minutes and only blows warm air, any ideas on the reason? thank you

Dan Reed (author) on September 11, 2018:

Tammy - I'm betting that it's the igniter. When you here the clicking that is the spark ignition trying to light....do you see a tiny spark? If you do, then the problem is either the gas valve not opening or the gas is off or potentially there is air in the line and it may need bled out. These are just guesses of course but all things I would be looking at if I were there.

Tammy on September 10, 2018:

I turned my furnace on for the first time since winter it worked fine in the winter but now wont turn on. I hear it clicking trying to light but doesnt. What could be wrong??

Dan Reed (author) 28. kolovoza 2018 .:

RAur - Thank you for the feedback. I think it's a little high but I'm in the "Heartland" so perhaps that's reasonable for the west coast. I wrote an article about cleaning the flame sensor...I hate to say it may have just been dirty. These usually fail or they don't...they don't usually act erratically unless they need cleaned. If they fail, they just fail. No resetting will help it. I have to clean mine every year.

RAur on August 27, 2018:

Dan, I got my furnace fixed, but needed a tech/service call. Essentially, it came down to the flame sensor being old and needing to be replaced. It was functioning erratically with no consistency. Manually recycling the power was helping, but with that i was was getting lucky with it working at times and not at other times. The tech replaced the flame sensor. The visit and the flame sensor together cost me ~$300/-. I am not sure if that is expected. I live the pacific northwest close to Seattle.

Dan Reed (author) on August 27, 2018:

RAur - You're welcome. I do have other articles here that may help you find where the fault is occurring if you check on my profile page, you'll see the list and can determine if one may be helpful.

Dan Reed (author) on August 27, 2018:

Anna,

It sounds as if you have a short in the low voltage wiring, stat, or at the board. You're correct. If you have it set for a/c you shouldn't be getting any sort of call for heat.

RAur on August 26, 2018:

Dan, thanks for your response. Your explanation makes sense, at least is logical. In terms of the fault that might be occurring, I will read a bit more to understand how i would find it. I will call for a service technician soon. When I get it resolved, i will revert back to this thread, so it might be beneficial to other readers of your site and for search engine indexing.

Anna on August 26, 2018:

Our furnace is not on but is glowing like it wants to ignite. We have the air on so it should not even be trying to light.

Dan Reed (author) on August 26, 2018:

RAur, I'm sorry but there are too many possibilities for me to try and narrow down based on the given information. It sounds like a fault is occurring and when you reset the power you're resetting the unit, clearing the code and the unit is running until the fault happens again and you're back to square one. What the fault is, I couldn't say without running tests or observing where the unit is shutting down in the cycle.

RAur on August 26, 2018:

Dan, I have a nest thermostat and an older furnace. They have been working well. But now the furnace (fan or heat) is not turning on even when i set the temperature on the thermostat higher than the temperature at home. However, i am able to get the fan and heat going when i manually turn off and then turn on the furnace's electrical switch. Any thoughts? Hvala.

Dan Reed (author) on August 15, 2018:

It sounds like you have an older furnace so there aren't too many parts there. It could be the limit or gas valve going/gone bad. I don't have enough info here to say for sure but that's what I'd be looking at.

Joe Moore 14. kolovoza 2018 .:

Hi my furnace is gas, the blower turns on in the summer to cool itself. The pilot lights and stays lit. Last winter my furnace wouldn't kick on to blow heat when my thermostat was reading a significant drop in temp. It stopped heating my house. That part hasn't worked since. Ima li prijedloga?

Dan Reed (author) on May 31, 2018:

Jordan beyer - If it's frying the breaker then you have an electrical issue that I am not sure what to offer as a cause. Bad wire? Bad breaker? If it's just tripping the breaker however then something in the unit is trying to draw too much power thus would short the board and then trip the breaker.

Jordan beyer on May 31, 2018:

My circuit board keeps getting fried and the breaker not sure why any thoughts

Dan Reed (author) on May 16, 2018:

E Thomas - It very well could be. When there are funky readings and weird activities that just don't seem to tie together for logical conclusion, the board is a pretty regular suspect.

E Thomas on May 15, 2018:

I have an issue with m HVAC unit where the blower runs non-stop, but the AC (or the furnace) wouldn't turn on. I have made sure the thermostat is fine. On the control board, there is no voltage between R and C. The fault LED is flashing an error - Open RO Switch. I have confirmed that that the RO switch circuit is closed. Could this be a bad board?

Dan Reed (author) on May 08, 2018:

I really can't say exactly what is happening but if it started with the new exchanger they should be fixing or at least figuring out what the issue is for you. I know propane at the wrong pressures can produce soot...perhaps it was wrong before he came but a bad exchanger had covered that up somehow? Do you know for sure that the unit was converted to LP? Units almost always come set up for gas and then need an LP conversion kit to make it work with LP which means changing out the orifice and valve spring as well as balancing the gas pressure to whatever the unit requires. If these things aren't done it will have your unit all goofed up.

Phil on May 07, 2018:

Hi, last February I had a Heat exchanger replaced in my Miller Propane Furnace. The Furnace starts ok to where ever the thermostate is set for, The problem i am having, is the furnace is turning off and on about every minute about 10 times before staying off. The roof vent is completely covered in black soot and it is all over the roof, None of this occured before the tech changed the heat exchanger. What could be the problem?

Dan Reed (author) on May 02, 2018:

Jerry - I cannot say for you to do that. I do not have enough info to recommend you do anything with those wires other than what they're intended for. If the problem is new then the wires are not likely the issue. Kill the breaker to make the unit stop.

jerry on May 02, 2018:

is there any way i can unhook them to wires and run them some where else to see if the unit will shut down or not with just them two wires?the unit only has heat hook to it.

Dan Reed (author) on May 02, 2018:

Jerry - I would imagine the green is hooked to the white terminal then those 2 wires would give you heat but they may have used a device call "add a wire" and then it may be all they needed to do the a/c when that was installed as opposed to pulling new wire. That is my guess.

jerry on May 01, 2018:

all the wires on the honeywell digial thermostate are attached didnt hook them up myself but where it comes into the wall to th pigtail plug wiring harness there is only two wires hooked up a red and i believe a green one and all others where cut short there

Dan Reed (author) on May 01, 2018:

Jerry - I don't believe the stat is faulty since there would be other features that would shut down the unit if it overheated and if it won't shut off then it sounds like something is mis-wired perhaps.

jerry 30. travnja 2018 .:

have an intertherm electric furnace hooked the power up to it set the thermastate and it was all ready running waiting for it to turn off at th temp i set it but it never shut off and the blow was still running on hight and i could see the coils still glowing red tryed everything to shut it down till i pulls the disconnect over the cartages fuses and it shut down could it be the digital thermastate being faulty?

Dan Reed (author) 30. travnja 2018 .:

Mrs. Klann - While I can't say what's causing this I can say that the unit should be shutting off then because if the flames run without the blower it will overheat and shutdown. If that isn't happening then I would quit running it because it could become a safety hazard. You'll need to call a technician however to find out what's the cause of this. Maybe a bad limit switch or circuit board but again, I can't say for sure based on this little bit of information and not testing the circuit.

Mrs.Klann on April 29, 2018:

My furance flames come on-but blower wont run-unless I keep turning it on by thermostat switch??

Dan Reed (author) on April 24, 2018:

Jesse - The answer to this all depends on your mechanical abilities. For someone who is familiar with taking things apart and putting them back together I'd say yes, it's a pretty easy task. If you're not, then it could be more hassle and lead to more cost than it's worth. If you do, don't forget to buy a new capacitor with your new motor. Sretno!

Jesse on April 24, 2018:

I think I have a blower that is starting to fail. Last year I could hear it making a squeaking sound but would always come on. Now it won't come on and the red light is blinking.

Is replacing a blower easy or should I get an HVAC tech?

Dan Reed (author) on April 10, 2018:

Shawn - it could be so many things. Try and catch the code it blinks if you have that LED on your unit next time it breaks down. That would help narrow it down. If not, he really should call a tech for you.

Dan Reed (author) on March 19, 2018:

Bill - I'm not sure what would cause both the fuse to blow and then when that's replaced still not run. Being brand new, I would certainly call the installer and ask them to come figure out and fix the issue.

Bill dana 18. ožujka 2018 .:

I have a airtemp gas furnace brand new it ran all night on and off only ran 5 min then went off got up this morning nothing found a blown fuse on the board replaced fuse now ignitor glows but will not light

Mollie on March 16, 2018:

I have an intertherm furnace, the thermostat died, changed the batteries and it works but the heater won't come on, the diagnostic light shows no problem, I turned off the switch and restarted it and nothing

Dan Reed (author) on February 26, 2018:

Joe, Did you resolve the issue at the thermostat? Just turning it off and on may not have solved the problem. Otherwise, without more information or personally running tests, I'd have a hard time offering any sound advice.

Joe on February 26, 2018:

I have a Lennix G27M 4–100a-2 and is turning on every 10 minutes and working for approximately eight minutes and shutting down, this is after finding out that the thermostat was not working properly and I turned off the thermostat and turned it back on, what's going on please help and thank you

Dan Reed (author) on February 23, 2018:

If the igniter is coming on but not lighting then the gas valve isn't opening. That could be because the pressure switch isn't being satisfied or it is failing. If the igniter itself isn't working then you'd have to replace it. I've written other articles that may help you narrow down your problem and perhaps make the repair.

Kami 22. veljače 2018 .:

Hello, my furnace was coming on and cycling about 5or 10 sec. kasnije. I cleaned the flame sensor and now nothing. the ignitor switch now coming on slower than usual and now the flames aren't coming on. it just shuts back down,

Dan Reed (author) on January 27, 2018:

Perhaps a burnt out heating element? Definitely an issue though since if there's an odor like an electrical burn then something is shorting out and I'd have a tech come sooner than later.

Mi on January 26, 2018:

We have a Coleman electric furnace and it clicks like it’s turning on but it’s not actually kicking on to blow air...and it smells like something is burning when it’s trying to click on

Dan Reed (author) on January 21, 2018:

It's possible and if so then make sure you get stainless steel burners since you have LP...they'll last longer.

Darlene Statz on January 20, 2018:

I have a 14 year old Rheem outdoor combination propane furnace/ electric air. In the last six weeks or so, on 3 or 4 occasions when I got up in the morning my house felt cold. When I looked at the temperature on the thermostat it read 61 when it was set at 68. After I turned the heat off and on, it went back to working fine until the next incident. The repairman says it needs a new burner. This does not make sense to me. Što misliš?

Dan Reed (author) on January 17, 2018:

You should have a chart on your furnace that answers that for you. I do not have these memorized. Every brand and unit has it's own coding.

Dan Reed (author) on January 17, 2018:

If the heat strips are working too hard then the breaker trips. For some reason the amperage is spiking and therefore it's working to hard, there's a short, or there's bad voltage. You need to know what is overloading the circuit. Probably a bad element or going bad. Too much resistance and/or heat due to bad amperage causing breaker to trip.

Rose on January 17, 2018:

My electric furnace blows hot air for about an hour and then the furnace breaker trips and it starts to blow cold air. The house breaker is fine. It's the breaker on the furnace that keeps tripping. What could it be?

Travis on January 16, 2018:

I have an amana furnace and its flashing a red light 6 times

Sanjay 6. siječnja 2018 .:

SO SO Helpful!! THANK YOU

Ryan 6. siječnja 2018 .:

Hello, my furnace is showing a 4 red light error indicating the high limit switch has opened. When the tech arrived he saw the error and tested the switch. According to his test the switch was closed (though the 4 red light error continued to show). He examined the rest of the unit and found that the capacitor was starting to fail (he replaced it). Within a half hour of his departure the 4 red light error appeared again. He believes that it is the circuit board that is the issue. Unfortunately for me he had a few other jobs to deal with before returning to me. He told me to reset the furnace (turn off and on) and remove the access panel to further reduce the heat build up. Since doing this the furnace has run fine.

My question is, does this appear to be a circuit board issue? The furnace has been professionally cleaned very recently (last week) and the filters are brand new. Any insight would be greatly appreciated.

Dan Reed (author) on January 02, 2018:

Cj - I'm sorry but there just isn't enough here for me to offer any real sound advice.

Dan Reed (author) on January 02, 2018:

TD - I really can't say from here. You'd have to run tests to see if that's the cause.

TD on January 02, 2018:

My nest was not getting enough power so I used extra wire to hook common to thermostat. Then a couple days later the nest says no power from R. The furnace board has green light. I tried removing the common wire I had connected before and still no power from R. So I'm not if what I had done before caused this new problem. Anyway I took the extra wire I had used for common and connected that to R on the board and R on thermostat. Now furnace works however fan will not turn off and I have to keep recharging my nest with USB every day. Is there something wrong with the board or do you think it's the thermostat?

Cj 1. siječnja 2018 .:

Furnace stopped working in the middle of the night, turned it off, turned it back on, nothing. Went into the garage and unplugged it, then plugged it back in while it was on and it began blowing air. Flames never came on, but the furnace continues to blow air. I removed the cover for the circuit board and checked the red light on it after turning the furnace on, the light stayed a constant red. I conducted the jumper wire test which resulted in the thermostat not being the problem. I am stumped, because I replaced almost every part on the furnace within the past 5 year's.

Dan Reed (author) on December 30, 2017:

Jose - There is not enough information here for me to offer advice. I've written quite a few articles that you could read and see if you can narrow down the possibilities a bit.

Dan Reed (author) on December 30, 2017:

Shirley - I can't offer any advice based on this. I would really need to physically inspect the unit for a stuck open damper, back draft, or something of that nature.

Dan Reed (author) on December 30, 2017:

Ian - Check your filter and if the a/c coil is clogged you could be trapping too much heat in the plenum. Or the limit switch itself could be bad. These are where I would start.

Jose on December 29, 2017:

I have a rudd force air furnace heater..thats warm up a little then wont start back again unless i switch button to off to heat again..cant find where filter is located

Shirley tait on December 27, 2017:

I have a free standing gas fireplace .Will start is and it may work real good for a couple days .Then all of a sudden I look and blue flames are dancing all around in a swirl .I get scared and turn it off ,

Ian on December 26, 2017:

My Lennox SLP98 modulating furnace has a red blinking decimal light when on idle mode but it gives an E250 error code( Limit switch circuit open - check why limit is tripping, overfired, low air flow) when it fires up. How do I fix this fault?

Hvala

Dan Reed (author) on December 26, 2017:

van - Well the ignitor is good but beyond that I cannot offer any advice based on this information. Oprosti.

van on December 25, 2017:

my older carrier gas furnace ignitor glow but the won't turn on

Pamelarenae on December 20, 2017:

Thank you so much for your help. We will contact landlord again and send letter addressing also.. Merry Christmas

Dan Reed (author) on December 20, 2017:

Pamelarenae - I wish I could offer more help and given what you've told me I would say there is definitely an issue and the landlord MUST have someone come back if it's "black as coal" because it's not normal or healthy if it's spewing it all over the home. There would definitely be an issue that needs addressed under those circumstances and by law, the landlord must address the issue.

Pamelarenae on December 20, 2017:

Its natural gas and he does not believe duct work has been done. He said " The unusual amount of dust that I was getting was actually not dust, it was soot that the furnace has been spewing all over the house" ..the filter is black has coal. Landlord will not send her contrator back out, plus contractor only speaks russian n sasly my friend does not know russian to ask questions. Landlord said in spring she will have ducts cleaned.. it is 2 story townhome, furnace is in basement not in same room with washer dryer if that helps.

Pamelarenae on December 19, 2017:

Thanks for answering question above.. im waiting to gear back from friend. I know he has natural gas and has commented on how dirty everything gets in his home very fast. Ill write again after he responds to my text. My friend moved in about time furnace was put in so im not sure he will know alot about past duct work. Thank you again.

Dan Reed (author) on December 14, 2017:

Elisabeth - I'm not sure what "steady on" means for your particular furnace. There should be a code chart that says if that means "normal operation" or a particular failure. Is it lighting? If so, then I'm not sure how you'd have cold air. I know that sometimes air can perhaps feel colder than it actually is but if there is a flame in the unit, I assure you it's not as cold as you might think unless for some reason your a/c and heat are coming on together. (Don't laugh...I've seen it before.) Sorry I can't be of much more help based on the information you've provided. There are just too many possibilities to narrow it down based on this. Hvala na čitanju.

Elisabeth Maynard on December 13, 2017:

My furnace pilot light is on, red light and yellow light are steady on but I'm get nothing but cold air. I've checked the filter and everything else I can think of. My formate is a Nordyne model # M1MB 070A BW. PLEASE HELP

Dan Reed (author) on December 08, 2017:

Dave - I answered the other question but here there are a lot of moving parts and I'm not sure what you're dealing with. If the fire is on, the air cannot be cold. If the furnace is failing, then the blower will come on as a default and then yes, you would have cold air but after 3 times, it should go into lock out. After all you've done, I would recommend having a tech look into this since it will likely require some tests that I cannot run from here. Žao mi je.

Dan Reed (author) on December 08, 2017:

Ryu8 - Glad to hear!

Ryu8 on December 07, 2017:

Problem fixed. Puno ti hvala.

Dave on December 05, 2017:

I have HVAC furnace model number KG6RC 080C-12B. I was experiencing problems where the inducer motor would kick on but after 1-3 minutes turn off. The LED on the board had two flashes which indicated "inducer motor on with pressure switch open." After hours of troubleshooting which included removing tubes from pressure switch and making sure obstructing. Checking for obstruction in exhaust pipe and running shop vac through each end, cleaning out condense tubes I still had two flashes. I finally removed tube from pressure switch to combustion box and ran heat cycle and it worked.however during that cycle warm air would only blow for 15-30 seconds and then blow just cool air. Once I reconnected the tube it would go back to the two flashes. I noticed some grime and residue below the inducer motor so I removed it and noticed the plastic gasket was cracked and brittle. I removed the gasket it fell apart once I touched it, cleaned up the area and reseated with high temp silicone sealent . I no longer get the two flashes and the furnace runs through it's normal cycle BUT I still have a problem where the furnace is only pushing out cool air. The flames do not stay on long at all. I did remove the flame sensor and cleaned it but I fear I may have cleaned it too much by way of over use of sand paper.

I replaced the flame sensor and the limit switch and still having same issue.

Dan Reed (author) 29. studenog 2017 .:

Ray, Sounds likely the pressure switch is either bad or doing it's job because the chimney is blocked or the fan is running too slow to satisfy the pressure switch. Pressure switch is where I would start my assessment.

Dan Reed (author) 29. studenog 2017 .:

Vick, It sounds to me like if this problem occurred at the same time as your repairs, you've gotten something in the wiring incorrect. I would advise you revisit this to be sure. Is it possible you have the transformer wired to the board in the wrong spot thus applying constant power to the circuit?


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