Question about Heating & Cooling
I have a Mitsubishi Mr. slim MSH15EN. The unit is in the heat mode and the defrost and power lights stay on, the outside unit is blowing the fan, but the indoor unit never produces ANY heat even after keeping on for hours. I've changed the remote batteries, reset the remote, cleaned the unit, etc.
I have the same problem with the same unit. I checked my defrost thermistor and I have a good reading (15 kohm, approx. 60 F). I have 230 VAC on the PC board to the RV coil. If I understand the schematic, If I have 230 VAC on RV Coil, my 4-way valve should be in heat mode, but I am always in cool mode.
I don't know if I have to change the PC board, the RV coil or the 4-way valve ?
Posted on Mar 08, 2010
If you do not have a windbaffle installed on the outside unit the unit may never come out of defrost in low ambient temperatures. Depending on the outside temperature it might be telling the pcb to stay in defrost to keep the compressor from slugging and being damaged.
Posted on Jan 20, 2010
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Posted on Jan 02, 2017
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