Question about Heating & Cooling
It sounds like the compressor needs starting components installed on it. All a/c units have a run capacitor for the compressor and another one for the condenser fan motor. These motors use these capacitors all the time when the motor is running. However, in some cases, this capacitor isn't enough to get the compressor spinning initially. Starting components consist of two parts, a start capacitor and a potential relay. The starting components are wired in in series with the compressor run capacitor. When the compressor turns on, the start capacitor gives the compressor an extra "kick in the pants" to get it going, then as soon as the compressor is spinning, the potential relay disconnects the start capacitor from the circuit for the duration of the run time and resets when the compressor turns off. Most likely, your indoor unit has a thermal expansion valve (commonly known in the trade as a TXV). This valve maintains a somewhat substantial differential between the high side and low side of the compressor after the system turns off which can be difficult for the compressor to overcome without help. Right now the compressor is trying to come on, can't overcome the pressure, and is tripping it's internal overload to protect itself. Eventually, as the overload repeatedly trips and resets over and over, the compressor will finally get around to a position where it will start once in a while. I am not a gambling man and I would bet you money that this will solve your problem. If you would be so kind as to rate my solution "Fix-Ya".
Posted on Jul 03, 2008
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Posted on Jan 02, 2017
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