Question about Mitsubishi Mr. Slim MXZ30TN Air Conditioner
It sounds like your unit has a bad start capacitor or start relay. If you have a thermostatic expansion valve a lot of times the unit pressures won't equalize for long periods of time, so the compressor needs additional starting torque. If you let the unit set long enough the pressures will equalize and the compressor will start, but if you try to restart it before it equalizes then the start capacitor and start relay add the additional starting torque, to allow the compressor to start with unequal pressures.
You probably already have them and they are bad, if not you need to have them added to your system.
Posted on Jun 01, 2010
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Posted on Jan 02, 2017
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