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45 views

Furnace Repair Gone Wrong?

My furnace stopped working last Saturday so I started troubleshooting to find the problem. I found that the board was not providing 110V to my inducer motor. So I determined that I needed a new board. ...
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0answers
26 views

Furnace won't light when fan commanded on

House and furnace are 5 years old. Furnace is an Allied A95UH2V090C16S-07 and is interlocked to a Lifebreath HRV. Functioned fine up until a couple days ago. My wife calls me and tells me that ...
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votes
1answer
68 views

What is causing intermittent furnace ignition failure? How to Diagnosis?

I have been researching how to diagnose this intermittent lighting issue with my furnace but the common issues do not seem to apply. Blower turns on Ignition coil turns cherry red Sound of gas blower ...
1
vote
2answers
758 views

Furnace entering lockout mode - air flow problem?

I have a Nordyne KG7SA, about 2009 vintage, which has begun acting strangely. We started noticing that the thermostat would drop several degrees below the set temperature before engaging. More ...
2
votes
2answers
516 views

Help with oversized furnace causing short cycle

I have just moved into a new home that had a pretty terrible HVAC system installed brand new by a flipper which has been causing me a ton of headaches. My house is 2000 sq feet, and the furnace is ...
1
vote
1answer
336 views

Shaking electric furnace

anyone have an idea about this ? My furnace fan is running 24/7 and make no special sound. But when the heat turn on the fan start vibrating and making noise in the house. If I remove the panel (...
2
votes
1answer
963 views

Furnace flames run for a minute then shut off

I have a furnace (Model: NUGK050CF01) that has recently been experiencing some weird behavior. The furnace will come on (I can see the flames) and it will run for a little over a minute. Then the ...
0
votes
1answer
102 views

question about a gas furnace having to light repeatedly

I am new to this forum, but I will do my best to answer any questions I can (I am a general contractor with a background in engineering and residential construction and machine design) so, here is my ...
0
votes
1answer
625 views

Heating system won't blow warm air

Turn my heat on via the thermostat. My oil fed burner kicks on and is lit up (heat is being made). The system is sucking in air to feed the system. Only problem is hot air never makes it out the ...
3
votes
3answers
24k views

Why is my furnace blowing cold air?

My HEIL 7000 natural gas furnace has stopped working what are the most likely causes, and how to verify faulty parts? Normal operation routine Thermostat sends "need heat" signal. Exhaust blower ...