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I am getting this error code occansionally with my furnace
I am getting this error code occansionally with my furnace "primary/secondary limit switch open". My furnace is a Lennox g40uh(x). sometimes after cycling the power it works but later on I get this sa… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
7,975 satisfied customers
Where are the switches for the primary and secondary
Where are the switches for the primary and secondary switches on my Lennox … read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
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Furnace turns off after running for a minute. Or won't turn
Furnace turns off after running for a minute. Or won't turn on at all. Power outage a couple days ago seems to have started the problem. Sometimes getting a 4-flash error code … read more
Phil
Phil
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Degree, Mech Engr Technology
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Lennox Furnace. C33-18A-2-6 is the model number. It's giving
Lennox Furnace. C33-18A-2-6 is the model number. It's giving me a diagnostic code of ds1: slow flash, ds2: on. The blower runs but no heat. … read more
Rick
Rick
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I have a Lennox G61MP furnace that stopped heating. I
I have a Lennox G61MP furnace that stopped heating. I believe it was due to a dirty filter. I replaced the filter. Not sure how to get it going again if the old filter caused the limit control to shut… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
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7,975 satisfied customers
I have a furnace with no heat. The blower motor comes on
I have a Bryant furnace with no heat. The blower motor comes on before the inducer motor which is backwards from the way it is designed… read more
Rick
Rick
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have a lennox el296uhv with a flashihg red light it flashes
have a lennox el296uhv with a flashihg red light it flashes 4 times and pauses.air filter was very dirty...have changed with proper air filter but light still flashing 4 times then a pause....is somet… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
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Hi. My Coleman Forced Air Furnace Model G8C10016MUC11A. The
Hi. My Coleman Forced Air Furnace Model G8C10016MUC11A. The burners are lighting but it times out. The indicator flashed 4 times to indicate "light switch open". I have changed the filters today and t… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
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MY GAS FURNACE WILL RUN FOR ABOUT 15 MIN. THAN SHUT DOWN.
MY GAS FURNACE WILL RUN FOR ABOUT 15 MIN. THAN SHUT DOWN. THE THEMOSTAT STILL NOT SATISFIED IT WILL NOT KICK IN UNTILL THE POWER IS TURNED OFF AND BACK ON. WE HAVE CHANGED THE CONTROL BOARD,GAS VALVE,… read more
Phil
Phil
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Hello, I am having trouble with my furnace. It is a Payne
Hello, I am having trouble with my furnace. It is a Payne Model PGMAA. It's a forced hot air, but is blowing cold air. It is flashing error code 33, then after 5 minutes changes to 31. I have tried to… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
7,975 satisfied customers
Hi! I have a Byrant 80 Plus furnace model# XXXXX I am getting
Hi! I have a Byrant 80 Plus furnace model# XXXXX I am getting a error code 13. Limit or Flame Rollout switch lockout. My father is an electrician and he and I are trying to locate the manual reset swi… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
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not getting heat. indicator light on left is slowly blinking
not getting heat. indicator light on left is slowly blinking and right light is on constantly. the diagnostic code says the primary/secondary limit switch open and then on (2stage models) primary or s… read more
warmneighbor
warmneighbor
owner
Vocational, Technical or Trade Scho
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I have a payne furnace is give me a code 33 mod pg8maa024070
I have a payne furnace is give me a code 33 mod pg8maa024070 ser 4506a18928, when the furnace just turned on with power it go straight to the code 33 the inducer fan did not come on at all just the bl… read more
Tim H.
Tim H.
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Vocational, Technical or Trade Scho
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Furnace says primary/secondary limit switch is open. I have no heat
my furnace is saying the primary/ secondary limit switch is open and I have no heat at all in my house where is the limit switch that I have to flip? Optional Information: Make : lennox Already Tried:… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
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I have a carrier model # 58pav070-12. The led light is flashing
I have a carrier model # XXXXX The led light is flashing code 33. I have tried turning the switch off and restarting it, nothing happened. The blower fan just runs constantly, the furnace doesnt even … read more
gotoman for ac
gotoman for ac
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carrier series 150, model 58PAV090-14 furnace, serial # 2299A07962.
carrier series 150, model 58PAV090-14 furnace, serial # XXXXX error code 33, blower does not shut off. is this the flame rollout switch and where is it. i don't see a fusable link to check. Is this sw… read more
TimVZ26
TimVZ26
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Vocational, Technical or Trade Scho
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I have a problem with a Lennox G50UH(X) Series No heat. 1st
I have a problem with a Lennox G50UH(X) Series No heat. 1st small blower motor to flue starts up for short period. Then main blower motor starts. No flame no heat. I checked the flue and chimmeny are … read more
Mike
Mike
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High School or GED
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I have a lennox merit c33-36c-2f. On Sunday, woke up and the
I have a lennox merit c33-36c-2f. On Sunday, woke up and the furnace was not running. Shut it off at the breaker, and turned it back on and it ran til this morning--noticed it was off this afternoon w… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,929 satisfied customers
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