Heat pump clicks but doesn't run

Discussion in 'HVAC Heating & Cooling' started by prepper, Jan 24, 2011.

  1. prepper

    prepper New Member

    Jan 24, 2011
    IN, USA
    From an earlier post I read this: "Have a helper set the thermostat up above the ambient indoor temp and you listen to the contactor. If it has 24v and does not click that is your problem."

    Mine is running fine indoors and when temp is low enough the auxillary heats like normal but when temp isn't low enough inside fan just runs and runs, heat pump unit outside clicks about every 10 secs but nothing else, no running, no hum, nothing.

    Know I can't troubleshoot and fix myself but any chance its just a relay or something?

  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    There may be a reset switch you could try pressing on the unit. Not much more to do unless you have some diagnostic tools and knowledge. A close visual check might turn up something. For example, one year, I had a mouse electrocute itself across my main a/c contactor sometime during the winter. When I tried to turn the a/c on in the spring, nothing...the fluids had gummed up the contactor and it was frozen solid. Some liberal use of contact cleaner, and all's well again without a service call.
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  4. tempritespokane

    tempritespokane New Member

    May 3, 2011
    Spokane, Washington
    I've found that the problem happens when the thermostat/heat pump wants to go into/out of Auxiliary heat mode. Is that the case for you?
  5. DonL

    DonL Jack of all trades Master of one

    Mar 30, 2011
    Rocket Scientist
    Houston, TX
    hello prepper, Welcome to Terry's Forums.

    You might want to check the Breaker for the outside unit.

    Many times the Inside and outside units are on different breakers.

    The 24 Volts come from the inside, sounds like that is working, and will click the outside relay,
    but the compressor could be on a different breaker/circuit, And may not be getting power.

    Have a great Day.

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