Customer Questions and Answers for Damper Control by Whirlpool

Hello Alfred. You will need to check and see if the damper assembly WP67003903 is opening and closing properly. Here is a test you can perform to see if it is working properly. If it is not, you will need to replace the damper. If it is working properly, you will need to replace the thermister 12002355. Hope this helps. Service Test Mode: The service test functions are performed using the refrigerator display and keypad. Enter the Service Test Mode by performing the following sequence of events 1. Hold the refrigerator door light switch closed. 2. Press the Refrigerator Temperature Up keypad 3 times consecutively. Note: The 3 Keystrokes must be done consecutively and within 10 seconds. 3. Release the refrigerator door light switch. 4. The control will display SE to confirm entry into the service mode. 5. Entry to the Service Menu is confirmed by pressing the Refrigerator Up key once more. 6. The control will display its software version for 3 seconds. 7. Following the software revision display the freezer display will read the first test number in the diagnostic tree. The refrigerator display will be blank. Note: All control functions will be turned off (Compressor, Defrost, Evaporator Fan, the damper will remain in its current position) 8. You are now in the SERVICES TEST operational mode and may use the diagnostic tests. The Service Test Mode can be exited at any time by closing the Refrigerator Door(s). The Freezer Up / Down keys allow selection of the test to be performed. Service Test 6 – Open Damper Test When selected this test will indicate the current position “O” / “C” (OPEN / CLOSED) of the refrigerator damper. The Refrigerator Up key will toggle the damper open and closed. You must allow 1 minute for each attempt to change the damper position. You should observe proper damper function. Service Test 4 – Fresh Food Thermistor Test When selected and activated this test will display Pass, Open, Short result for a test on the Fresh Food Thermistor circuit as show below. The test is activated and de-activated via the Refrigerator Up key, and must be de-activated to move to another test selection.