54
Thermo King
Info

Test Mode Timeout

The unit remained in a test mode for longer than permitted.

Possible causes

  • Manual test not finalized by technician
  • Software error
  • Interruption during self-test process
  • Failure to complete a stage of the test

Recommended actions

  • Clear the alarm
  • Restart the microprocessor
  • Complete or cancel active manual tests
  • Verify normal operation in automatic mode

Can't find your code? Talk to an expert

$150

One-on-one phone session with a Low Temp refrigeration tech. Emergency temporary assistance only.

Have a question? Ask the community

Thousands of refrigeration mechanics read and answer for free. Post your case in under 1 minute.

Need a professional diagnosis?

Low Temp Service — refrigeration experts in Florida.

Contact us