Question about Heating & Cooling
I changed out the thermostat to a new Nest thermostat and the air kicked on for a few seconds and shut off. I switched back to old thermostat and still no power or air. Any ideas on what happened? It is a Heil heat pump.
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Posted on Jan 02, 2017
SOURCE: Fan runs, shuts down on cool
Sounds like a power supply problem. There is enough power to run the fan but when you turn it to cool the current draw by the compressor drops the voltage. The lower power light is telling you the answer to your problem.
Posted on Jul 18, 2008
is installed in a vertical up flow or horizontal position , if in horz position you could have a bad or miss positioned roll out switch this is a thermal switch positioned toward the burner edge that if the flame rolls out of burner area trips and then resets as it cools allowing the furnace to re-start until it reaches temperature , something to check .
Posted on Dec 09, 2008
Do you know if your unit is a heat pump or not? Sounds like it may be an electrical problem and yes you would need to call a service tech.
Posted on Jan 17, 2009
If no blowing air is coming out to your ac or evaporator fin,your blowing fan is not working.There are several factor to check qualified electrician or ac techician should do this.If you have knowledge on electricity and motor control,beside you should have clamp ammeter to use in trouble shooting of ac electrical circuit.Unplug your ac If there is an opening of blower fan of your ac mostly the top cover open this one locate the wire connection of blowing fan take the color and size.Open the terminal box below the control panel of ac and locate the wire of blowing fan.Check how many leads make sure to make sketch where it was connected from low,medium, and high there is coded color on it,discannect from the terminal, using clamp ammeter set to ohms probe setting R10 check continuinity of winding motor start at common lines(mostly balck color) of one test rod and the other to starting line(mostly red color)take and read the resistance if has a higher resistance your motor is burn out, also with the running line w/c has multple line for speed.If resistance complied to your motor rating or good,If not or burn out replace fun motor.Check your capacitor,doing this set your ohmeter to a higher resistance,connect one red test rod (+) one terminal of capacitor and one black test rod on (-)the other terminal the pointer will deflect steady to higher resistance then reverse the connection of the test rod,the pointer deflect again to higest resistance it will go slow backward setting to zero if you got this result your capacitor is good.But if it does not go set back to zero your capacitor is short.Replaced capaciter.
Posted on Mar 13, 2009
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