Gary K. Monogram fridge zfgp21hzjss not cooling fan and compressor not running from j15 I get 1.5 vdc and 7 ohms on compressor Is it my board or inverter? Is 1.5 ok I read that you need 4 to 6 vdc
Answer Gary, The main control board will send a run signal between 1.5 and 3.5 VDC effective voltage to the inverter, this is "normal". But, when the sensors and control call for cooling the DC volts should be at least 5 VDC and could be as high as 14 VDC depending on the sensor and temperatures. When measuring signal voltage (from the main control board) at the inverter, disconnect the wire harness connector at the inverter and measure the voltage at the connector. A signal voltage from the main control board (J15 connector ) lower than 5 VDC indicates a faulty main control board. Read More... Answered by AppliancePartsPros.com | Monday, August 3, 2020