Error Code H-4
Lower broil heater malfunction detected during self-diagnosis
Moderate
Address soon - your appliance may not work properly
What This Means
Lower broil heater not operating; Wire connection loose on Wall Main PCB; Main PCB failure
How to Fix
- 1
Check operation of lower broil heater and wire connections
- 2
Check lower broil heater wire on Wall Main PCB (T206, T207)
- 3
Replace lower broil heater and connect wire correctly if above steps fail
- 4
Replace Wall Main PCB if problem persists
Other Error Codes for NV51K7770SG
PCB temperature rises abnormally high
Cooling motor operating abnormally
Partition inserted or removed while oven is operating
Steam sensor open circuit during steam mode
Oven sensor open circuit during operation
Oven sensor short circuit or abnormally high internal temperature
Keypad short circuit
Communication interrupted between Main and Touch PCB