Question about Heating & Cooling
Lets say the thermostat is set at 70 degrees and it is 67 degrees in the house. The furnace will come on and stay on for several minutes. Then the flame will go out for about 30 seconds and re-lite. All this happens before reaching the 70 degree set point. The blower motor stays on until it relites and reaches the set point temp. I have changed the air filter. The motor blower vaines seems to be in good shape. I have not cleaned the coil yet due to the location. Hard to get to, however the is a spot that I can see some part of the coil and it doesn't seem to be dirty. It has a 4 way limit switch on it that could be suspect. The furnace was installed in 1987 and it is an Amana. Thanks for your help..
This sounds like a flame sensor problem. You may lightly sand the sensor for a better sensing the flame that will keep it running. There is another problem it could be. Check that the proper gas pressure according to the mfg is correct. A very slight amount has cause this problem quite a few times. You should have a qualified person with a gauge designed for this to test it. Maybe you could get your local gas provider test the gas to the home 1st. The gas pressure adjustment and test should definately be preformed by a qualified tech. Good luck J
Posted on Dec 19, 2008
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Posted on Jan 02, 2017
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