Motorhome Refrigerator Problems
Took my rig for minor service, was there about three weeks. Fridge worked fine. Back home, plugged in to shore power and getting a code no co in all modes (auto, LP,EL) Advice? GM
Forum Discussion
You show a 2006 Discovery, which would indicate a 1200 series Norcold.
1. The shop did nothing wrong unless you left the refer ON
2. Did your service require them to look at the refer?
3. The most common cause of NO CO, is running off level and IF you left the refer ON when you dropped off for service, odds are they could not park you level and off level caused the off level operation which caused the Heat to build up and tripped the NO CO sensor and control board.
4. 2nd most common cause is the rear cooling fans not operating and causing the Cooling unit to overheat
5. Then we have the dreaded yellow leaker of ammonia. It is usually evident around the LP Burner area.
6. AS the other poster stated, 1st NO CO lets you know a operating parameter was BAD. You have 2 bites at the apple. Turn OFF and then ON and IF you get a 2nd NO CO without a normal cool down operation, the 2nd NO CO locks you out of the controls and operation. If a normal operation happens the 1st NO CO is erased.
7. You have a separate control board that monitors NO CO. It is NOT part of the Main control board. It is mounted on the lower back side cooling coils accessed from the outside refer door and will have a red LED light ON if tripped. If it is tripped the 2nd time, Norcold advises to have the refer checked out by a qualified Norcold shop. There is a procedure to reset the NO CO box, but I do not tell people how to do that. Doug
1. The shop did nothing wrong unless you left the refer ON
2. Did your service require them to look at the refer?
3. The most common cause of NO CO, is running off level and IF you left the refer ON when you dropped off for service, odds are they could not park you level and off level caused the off level operation which caused the Heat to build up and tripped the NO CO sensor and control board.
4. 2nd most common cause is the rear cooling fans not operating and causing the Cooling unit to overheat
5. Then we have the dreaded yellow leaker of ammonia. It is usually evident around the LP Burner area.
6. AS the other poster stated, 1st NO CO lets you know a operating parameter was BAD. You have 2 bites at the apple. Turn OFF and then ON and IF you get a 2nd NO CO without a normal cool down operation, the 2nd NO CO locks you out of the controls and operation. If a normal operation happens the 1st NO CO is erased.
7. You have a separate control board that monitors NO CO. It is NOT part of the Main control board. It is mounted on the lower back side cooling coils accessed from the outside refer door and will have a red LED light ON if tripped. If it is tripped the 2nd time, Norcold advises to have the refer checked out by a qualified Norcold shop. There is a procedure to reset the NO CO box, but I do not tell people how to do that. Doug
