Question about Heating & Cooling
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Posted on Jan 02, 2017
You should be seeing 120 volts to the igniter. Anything less requires either a replacement of the transformer, start relay or control module.
Posted on May 30, 2008
Test while the unit is firing with a meter. you should have 24 volts going to gas valve. If you do and no gas is coming out, you have a bad gas valve. You will need a gas pressure test kit to install a new one correctly.
Posted on Dec 01, 2008
Keep in mind all furnaces and circuit boards are not the same. Look on the back of the door to the blower compartment. You should find the list of diagnostic codes. Look up four blinks it should narrow down the problem. Although from the discription you gave it sounds lie the high limit control. When a high limit appears to be acting up it DOES NOT mean that the high limit needs replaced. The high limit just may be doing its job. This means that the furnace is overheating. Check your filters. Are all of your registers open? Is your blower set on the right speed? Is your blower going bad? Is the blower motor capacitor bad? Is your evaporator coil restricted? Just changing a high limit switch does not always solve the original problem!
Posted on Apr 03, 2009
check the flame senser connection it tight to the board and that it is clean or try looking at the fault codes again they are online you could check the air fliters are clean
Posted on Oct 22, 2010
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