Question about Fujitsu Heating & Cooling
2 ton heat pump mini split evap motor has high pitch sound even when speed variates.Also can you manually put unit into defrost.
How old is the unit? Usually a high pitch sound in a motor is a dry bearing which eventually will cause the bearing to drag and cause the motor to draw high amps and overheat, some of your older motors have oilers on them that you can oil.
As for manually defrosting your unit, usually you can, by being very careful and opening the wire box cover, on the defrost board there should be two pins that say test, by shorting them together with a screwdriver and holding it for a few seconds it should initiate a defrost. the voltage across the test pins is very low, about 5 volts it won't hurt you or anything and it won't arch or spark.
Posted on May 26, 2009
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Posted on Jan 02, 2017
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