Question about Heating & Cooling
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: Air Handler Blower Unit Humming
More then likely it's the transformer. It may be getting weak. I've seen them hum/vibrate almost new and last for years. It's more an annoyance than anything.
Posted on Jan 18, 2009
SOURCE: Lennox furnace not heating up
sounds like the ignitor is bad. there shoule be a 2 wire plug going to it. after the inducer motor starts, you can check the voltage at the 2 wire plug located under the burners. you can unpug it to check voltage or you can probe the back side of the plug with a volt meter. if you are getting 120v but it is not glowing, it is bad. you can also ohm it out while it is off.
Posted on Feb 02, 2009
It is possible that it's the thermostat. When you turn it into cool mode, does the unit come on at all or is it silent? If nothing is coming on, then it's likely it's the tstat. Did the tech check the refrigerant charge while he was there? He should have checked it with the auxillary heat off and the unit just in heat mode. Make sure that the condenser unit outside is coming on when you are calling for cool, If you turn it on and everything comes on, go outside and put your hand on the large copper pipe coming into the unit. In cool mode, this pipe will be cold to the touch and in heat mode, the pipe will be warm to the touch. There isn't much you can do on your own with the exception of changing the tstat. If you can answer some of the questions I have posed, I can try and give you some more answers. Just remember that a check up doesn't mean its a guarantee that something won't happen the next day, it's just that everything was in working order at the time of the checkup.
Posted on Mar 21, 2009
your fan motor outside is going bad, have a service company change it out for you.
the motor stopped working and that overheated the compressor shutting it down on thermal cutout, and it will only come on once it cools down
Posted on Jul 01, 2009
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