Kitchenaid KSCS25IN00

[AlanN]

The digital thermostat resets to 46 degrees and both the freezer and refrigerator are warm. I removed the display board and nothing looks burnt. There is a three wire connector Black Brown and Red (or Orange) with stripes. The pins have ~ 300K ohms and the outer 2 have ~92 uf capacitance. The connector has 12 VDC when plugged in. The Embarco inverter flashes green three times every 5 seconds, which I think means a communication problem. It appears to be an intermittent problem, because right now there are no flashes on the inverter and the compressor is running, and the freezer compartment is getting cold. Where is the motherboard for this unit and how do I get to it? I initially thought the display board was the motherboard, but there is only one connector with those three wires. I have replaced the condenser fan and the inverter previously on this unit.

I do electrical troubleshooting, but for a different industry.