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Diagnostic Mode

The refrigerator can be switched into a diagnostic mode to read the potential error codes of the compressor. When the refrigerator is in diagnostic mode, the COOL LED on the refrigerator switch will flash 1-5 times, depending on the error. Perform the following steps in order to access the refrigerator diagnostic mode:

  1. Turn the ignition switch to the ON position.
  2. Depress the refrigerator switch to the FREEZE position for approximately 1 second, until the FREEZE LED illuminates.
  3. Depress the refrigerator switch again to the FREEZE position for approximately 5 seconds, until the FREEZE LED flashes quickly and repeatedly.
  4. NOTE: Use the Diagnostic Mode Error Code Chart to determine the error.

    When the FREEZE LED is quickly flashing, the COOL LED will display the error code by flashing 1-5 times, depending on the error.

  5. NOTE: If the refrigerator is in diagnostic mode and the ignition is turned OFF, the refrigerator will restart in FREEZE mode when the ignition is turned back to the ON position.

To turn the diagnostic mode off, depress the refrigerator switch to the FREEZE position for approximately 1 second. The FREEZE LED will stop flashing, but it will remain illuminated and the refrigerator will be in freeze mode.

DIAGNOSTIC ERROR CODE DESCRIPTION CHART

Number of Flashes Diagnostic Error Code Diagnostic Error Code Description
1 Battery protection cutout The voltage level at the refrigerator 12 volt connector is below the parameter settings. This code may set when the refrigerator has been active with the engine off.
2 Fan over-current cut-out The fan loads the electronic unit with more than 1 amp peak. Refer to INSPECTION AND VERIFICATION .
3 Motor start error The rotor is blocked or the differential pressure in the unit is too high. This may occur in high ambient temperature situations or if the refrigerator was stopped and restarted within a short period at a high load and/or a high ambient temperature condition. Let the differential pressure lower, before attempting to restart the refrigerator.
4 Minimum motor speed error The refrigeration system is so heavily loaded by ambient temperatures that the motor cannot maintain a minimum speed of 1,850 rpm. Let the refrigerator system cool down before attempting to restart the refrigerator.
5 Thermal cut-out of electrical unit The refrigerator is so heavily loaded by ambient temperatures that the refrigerator module gets too hot. Check the vents and the area of the compressor, condenser for a blockage, possibly from dust. Check the fan for correct operation.
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