Error Code C-72
Drain system unable to evacuate water within time limit
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: C-72
What This Means
Drain pump motor failure; Drain pump wire disconnected; Sub generator ground wire disconnected; Water tank sensor failure; Main PCB failure
What actually causes this:
Pump failure, clogged drain line, loose connection, or control board failure
First Thing to Check
Verify drain pump motor has power and can operate manually
Parts Involved
How to Fix
- 1
Check drain pump operation and wire connections
- 2
Verify drain pump motor spins
- 3
Check ground wire on steam sub generator
- 4
Check water level sensor connection
- 5
Measure motor voltage when drain commanded
Other Error Codes for NQ70M9770D
Temperature sensor internal to Main PCB is not functioning
Keypad short circuit detected
Temperature sensor reading exceeds safe operating threshold
Door lock mechanism malfunction or misalignment
Meat probe sensor circuit shows abnormally low resistance
Bake heating element not energizing during self-test
Main control board temperature sensor reads excessive heat
Partition configuration changed during active cooking cycle