Check CONNECTOR 3. Unplug it and check for bent pins and broken wires. Replace the connector.

Enter TEST MODE 1. Measure the voltage to the compressor across PIN 4 and PIN 12 of CONNECTOR 3. It should be approximately 115 VAC, the same voltage as the wall outlet. If not, replace the MAIN BOARD.

Measure the voltage across PIN 3 and PIN 4 of CONNECTOR 3. (Pin 3 BK/WH wire and Pin 4 GY wires) It should be 12 ~ 16 VDC. If not, replace the MAIN BOARD.

Read the feedback voltage across PIN 4 and PIN 5 of CONNECTOR 4. (Pin 4 GY wire and Pin 5 YL/BK wires) It should be between 1 and 4 VDC. If not, replace the MAIN BOARD.

Still in TEST MODE 1, does cold air come out of the top of the MULTI-DUCT? If not, check the damper. In TEST MODE 1, the fan should run continuously and you should feel the air flow.

Enter TEST MODE 2. The cold air should stop coming out of the MULTI-DUCT. If the airflow doesn't stop, check the damper.

Remove the connector to the damper at the base of the MULTI DUCT. Read the resistance across PIN 1 and PIN 4 (RD and YL wires). It should be 373 ~ 456 ohms. If not in spec, replace the damper. Read the resistance across PIN 2 and PIN 3 (WH and BL wires). It should be 373 ~ 456 ohms. If not in spec, replace the damper.

After taking the refrigerator out of test mode, adjust the MAIN BOARD for temperature compensation. Cut JUMPER 3 and Jumper 4 to adjust the temperature downward by 1° or 2° C (1.8° or 3.6° F).

Cutting both jumpers affords the full -2° C temperature compensation. A similar adjustent can be made to adjust the refrigerator temperature upward. Cut JUMPER 1 and Jumper 2 to adjust the temperature upward by 1° or 2° C (1.8° or 3.6° F).

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