The GE style inverter resembles part number WR49X10283. When attached to compressor, 2 seperate wire bundles are visible:
- The smaller connector is for DC control voltage;
- The larger connector is for 115 vac power voltage;
- When the inverter is removed from the compressor a 3rd wire bundle is visible, the 230v pulsed output used to drive compressor; has a 3 hole head that match’s compressor 3 prong power connector.
When refrigerator is plugged in the 115v power connector to the inverter should have 115v as soon as the condenser fan starts turning. The DC control voltage should be 4-5 volts. When the inverter DC lead is connected it should read 7-12vdc. You’ll need thin multi-meter leads to take reading. If the DC 7-12v signal is present, and the 115v power is applied the inverter makes 0 v when not connected to compressor (carefull, don’t count on output lead being 0v, ever). When connected to compressor any two pins of output lead should read 80-230v on AC scale. If you read 20v the inverter is about to start the compressor.