NORCOLD Fridge NO CO code

Some ideas at:

https://www.google.com/search?q=propane%20rv%20frig%20error%20codes&ie=utf-8&oe=utf-8&client=firefox-b-1-m

The 12/19/2018 “…NOCO…” YouTube may be the best place to start.

Guy,

mine has a 12 volt fuse up front, the small fuse on the frig circuit board, and the 120 breaker. I don’t think anything on frig works without 12 volts to the circuit board. But, not certain if the 12 volts is stepped down before or within the circuit board.   the “switched” propane solenoid/igniter relay is definitely a full 12 volts.

If that 12 volt fuse up front is good, there should be 12 volts as it enters the frig compartment.  A separate 12 volt feed comes from the propane on/off indicator light switch by the kitchen sink (near the 120 volt on/off indicator light switch. I think that separate switched 12 volt source is on the same 12 volt fuse up front. you could pull that solenoid switch and test for 12 volts there.

if the 12 volt fuse up front “looks good,” try swapping with another one of the correct size.

vacuuming should not trip a 120 volt 15 amp breaker unless it was on circuit with a coffee pot or other heater and the pot/other heater were on.  Tripping should not impact 12 volts unless the converter/charger in front storage lost its 120 volts so not charging AND battery is dead. If overhead 5er lights work ok (not dim or flickering)  battery should be fine and feeding the 12volt fuse up front.

Not sure what shorting out what would kill 12 volts and not fry the 12 volt fuse up front EXCEPT If 120 hot tried to return to ground via the tiny 12 volt ground wire.  If that happened you should see or certainly smell some burned 12 volt ground wire insulation.  Unsafe if that happened but should not affect 12 volt +.  If that did happen it is unlikely to have broken that ground wire so 12 volts would still have round trip to battery and should work.  If in doubt run a new ground to a solid frame bolt.

Sorry, No more ideas.