Fridge Assistance and Troubleshooting

are you plugged into shore power? and you need a good 12v source even plugged in .

midnightsadie wrote:
are you plugged into shore power? and you need a good 12v source even plugged in .

Yes. Plugged in and have 2 strong batteries. Power definitely not the issue. I even tested the 110v plug installed behind and it has no power issues either.

If it's a 2020 on warrenty then I would contact Norcold about a replacement.

Fans in the chimney or the thermostat that controls them. If they don't work it won't cool even if everything else is working.

Trailer/Site IS level? Doug

Yes. Everything is level. Anyway to test the thermostat? I have called RV dealer, but this likely involves tearing campsite down, bring trailer to them, potentially leaving it with them for days/weeks/months, etc.

Hoping it is something I can resolve on my own

Try a mobile rv tech. Might be worth the extra money for them to come to you.

You posted "....2020 travel trailer parked at a site for a few weeks."

During that few weeks was trailer plugged into AC Shore power and had good 12VDC Power?

Was fridge being operated in 'AUTO' mode?

Norcold N8X......part of the Polar Series

BOS (Backup Operating System) allows fridge to continue to cool if temp sensing is lost. But it uses a 'timed base' heating cycle vs a 'temperature based' cycle
Time based can be changed by increasing (colder) or decreasing (less colder) Temp Set point

Bad thermistor/unplugged thermistor results in BOS but fridge should have still being functioning

External Thermostat/Fan is 'OPTIONAL'
It is a must need if fridge is in a slideout
It is a nice to have if fridge uses a roof vent
Thermostat is attached to condenser fin...closes at 130*F FIN Temp (starts fan) and opens at 115*F FIN Temp (stops fan)
In order to see if you have Fan Option check wiring on lower circuit board P1 8 pin connector (bottom of board)
Pin #1 ----- 12VDC Ground
Pin #6 ----- 12VDC POS
*Pin Numbers go right to left


No Error Code?
W/O it flashing any codes it is hard to guess what is going on
Could be circuit board, could be upper display, could be harness between the two etc
Troubleshooting starts on pg 29 thru 34 for 'X' models
Go thru those checks and see if something turns up

Norcold 7/8 Polar Series

some mobil techs can do warranty work.