Norcold RV refrigerator fault codes
RV fridges (absorption or 12V compressor) throw codes when they lose cooling, fail to ignite on gas, or detect a sensor/power fault.
How to read the code
Most RV refrigerator codes appear directly on the temperature display. Note the exact text or number before resetting, since clearing the fault can erase it.
All documented codes
8 flashes warning
DC input voltage too low. The 12V supply feeding the refrigerator control has dropped belo… 9 flashes warning
DC input voltage too high. The 12V supply to the refrigerator control has risen above the … 10 flashes warning
Communication lost between the refrigerator's controls (the user-interface/display board a… AC / rE flashing warning
The flame-sense circuit on the control has failed, so the refrigerator cannot reliably tel… AC HE warning
AC heater fault. The control cannot run the 120V AC heating element correctly, indicating … dc LO / dc HI warning
DC voltage faults. 'dc LO' means the 12V DC voltage supplied to the refrigerator is too lo… dr info
Door-open alarm. The refrigerator door has been left open longer than about two minutes, s… F1 / F2 / F3 warning
Indicates an open (blown) fuse on the power board, each protecting a different circuit. F1… Li OP danger
The high-temperature limit (thermal) switch has opened, or the connection at the LIMIT IN … no AC warning
No usable 120V AC power is reaching the heater. The control reports that AC power is not a… no CO danger
The control board's cooling-system monitor detected that the refrigerator is not actually … no FL warning
The refrigerator tried to run on LP/propane (gas) mode but the control board did not detec… Sr / CL flashing warning
The control detected that the AC relay is stuck in the closed position, so it cannot prope…
DC input voltage too low. The 12V supply feeding the refrigerator control has dropped belo… 9 flashes warning
DC input voltage too high. The 12V supply to the refrigerator control has risen above the … 10 flashes warning
Communication lost between the refrigerator's controls (the user-interface/display board a… AC / rE flashing warning
The flame-sense circuit on the control has failed, so the refrigerator cannot reliably tel… AC HE warning
AC heater fault. The control cannot run the 120V AC heating element correctly, indicating … dc LO / dc HI warning
DC voltage faults. 'dc LO' means the 12V DC voltage supplied to the refrigerator is too lo… dr info
Door-open alarm. The refrigerator door has been left open longer than about two minutes, s… F1 / F2 / F3 warning
Indicates an open (blown) fuse on the power board, each protecting a different circuit. F1… Li OP danger
The high-temperature limit (thermal) switch has opened, or the connection at the LIMIT IN … no AC warning
No usable 120V AC power is reaching the heater. The control reports that AC power is not a… no CO danger
The control board's cooling-system monitor detected that the refrigerator is not actually … no FL warning
The refrigerator tried to run on LP/propane (gas) mode but the control board did not detec… Sr / CL flashing warning
The control detected that the AC relay is stuck in the closed position, so it cannot prope…