Error Code C-70
Steam temperature sensor circuit open or shorted
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: C-70
What This Means
Steam sensor connector disconnected at Main PCB; Steam sensor connector disconnected at sensor; Open circuit in steam sensor wire harness; Short circuit in steam sensor wire harness; Defective steam temperature sensor; Main PCB failure
What actually causes this:
Broken sensor wire, water intrusion, or loose connector in steam circuit
First Thing to Check
Inspect steam sensor connector at Wall Main PCB (CN340)
Parts Involved
How to Fix
- 1
Check whether connector at the Main PCB has been inserted
- 2
Check whether connector at the sensor has been inserted
- 3
Check correct wiring between Wall Main PCB (CN340) and steam sensor
- 4
Measure steam sensor resistance
Other Error Codes for NQ70M7770DG
PCB internal temperature sensor malfunction
Control board temperature exceeds safe limit
Water not draining from oven cavity after cycle completion
Shorted keypad keys detected
Loss of communication between control boards
Temperature probe sensor short circuit detected
Magnetron or convection cooling fan not operating correctly
Temperature sensor open circuit or short detected during operation