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I have a rheem condenser that the contactor does not pull in.I have changed the relay control board

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  • ajh195252 Sep 13, 2009

    tried that now the compressor went out and got hot i think the unit was on time delay

  • ajh195252 Sep 13, 2009

    thanks but did that first

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Have you checked for 24volts A.C. from thermostat two small wires on the magnetic coil on contactor,w/o this voltage the contactor will not pull in to energize compressor with 240 volts A.C.it needs

Posted on Sep 12, 2009

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It is possible that the relay in the thermostat for "cooling" has gone bad. The relay that runs the blower is different than the condenser relay. Check that you have 24v AC coming from the t-stat to the "y" terminal at the air handler. That same "y" wire should go out to the condenser, make sure then that you have 24v out there. If you have 24v at the condenser then see if the contactor is pulling in. If not then you may have a loss of charge switch that is stopping the current to the contactor. See if you have 24v to the coil of the contactor. If the contactor is pulling in and power is going to the compressor then the compressor has failed. If this is the case the condenser fan will be running but the compressor is not. If neither the condenser fan or the compressor is running then you have a problem in the 24v circuit, which could be a bad wire or a safety switch.

As you can see there are a number of possibilities for your problem. You will need to methodically go through everything to eliminate the possiblities till you isolate the problem,

I hope that this will help you to solve your problem and get you cooling again!

Thanks for using Fixya!

Heatman101

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I was looking at a 4 ton split system,goodman indoor and outdoor fans come on but no compressor think it's the relay but didn't see 1 in the furnace control board,is the relay inside the contactor on the...


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