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13-07-2014, 11:41 PM #1
Reset circuit breaker to make ac come on
Hello, I have a 2004 3 ton Comfortmaker condenser paired with a 2009 Unico air handler. Starting this season, the air conditioning will run and cycle off, then it will not turn on again until I switch the circuit breaker off, than back on. Neither the air handler or condenser will power on until I do so. I had the repair man out once, and he replaced 3 relays on the air handler. The problem persisted, so he was back out and this time replaced the thermostat, but yet again the ac wouldn't turn on. Before I call the serviceman back, I am looking to the forums for a little advice.
Many Thanks, Owen
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15-07-2014, 10:36 AM #2
Re: Reset circuit breaker to make ac come on
Sounds like stored fault being reset when powered off and back on. Try manufacturers fault diagnosis from controller or LEDs on pcb. Protection device.