Boonieman
Well-known member
This is for the electrical gurus here. I?m working on an old Rheem air condition on an old house we bought. It was working, but now the condenser fan motor won?t run. I suspect the dual mode capacitor, but it doesn?t show any physical signs of being bad like they usually do. I took the capacitor out and used my old Simpson analog volt-ohm meter (I have digital as well, but I?m old school, ok ?) and put the meter to +DC ohms and set it on 100. One side to common, and one side to fan motor....no reading. One side to common and one side to Herm?s...no reading. Usually, the needle will bump up on the fan side and come back down on a good capacitor. On the Herm?s side it usually builds ohms slowly. On the one, nothing. Don?t get me wrong, I?m a jacket mechanic and just learned by experience. With the hotter weather now, air conditioner guys are at a premium with estimated two weeks before anybody can come, so trying myself. I didn?t want to test voltage from the capacitor to the fan with the unit attempting to run, because I wasn?t sure what voltage to expect from the capacitor and don?t want to fry my beloved old Simpson meter.