Norcold Refrigerator: “10 flashes”
warning RV refrigerator error codes
What it means
Communication lost between the refrigerator's controls (the user-interface/display board and the rear power board can no longer talk to each other).
Most likely causes
- Loose, damaged, or disconnected communication/ribbon harness between the boards most likely
- Corroded or chafed wiring in the comm harness common
- Failed display board or rear power board less common
Safe checks you can do yourself
- Power the fridge down, then inspect and reseat the harness connectors between the front display and the rear power board.
- Look for chafed, pinched, or corroded wires along the harness run.
- Confirm both boards are receiving power.
How to reset / clear 10 flashes
- After reseating connectors, cycle the fridge off and on at the control to re-establish communication and clear the code.
When to call a technician
If reseating the harness does not restore communication, have a tech test the display and power boards.
Applies to
N7V · N8V · N7X · N8X · N7DC · N8DC · N10DC · NA7 · NA8 · NA10 · N7 · N8 · N10
FAQ
What does Norcold Refrigerator code "10 flashes" mean?
Communication lost between the refrigerator's controls (the user-interface/display board and the rear power board can no longer talk to each other).
How do I reset Norcold Refrigerator 10 flashes?
After reseating connectors, cycle the fridge off and on at the control to re-establish communication and clear the code.
What is the most common cause of 10 flashes on a Norcold Refrigerator?
The most likely cause is loose, damaged, or disconnected communication/ribbon harness between the boards.
Related · Norcold refrigerator
DC input voltage too low. The 12V supply feeding the refrige… 9 flashes
DC input voltage too high. The 12V supply to the refrigerato… AC / rE flashing
The flame-sense circuit on the control has failed, so the re… AC HE
AC heater fault. The control cannot run the 120V AC heating … dc LO / dc HI
DC voltage faults. 'dc LO' means the 12V DC voltage supplied… dr
Door-open alarm. The refrigerator door has been left open lo…
Sources
- Norcold Polar N7V Service Manual, Flash Pattern 10 (communications lost) — Polar N7V/N8V service manual, p.17 (10 flashes) (ManualsLib (Norcold service manual))
- Norcold Polar 7 Series Owner's Manual (snowflakes/comm-loss indication) — Polar 7 Series manual, p.22 (ManualsLib (Norcold owner's manual))
Note: On the Polar N7V/N8V service manual this is the 10-flash pattern; some Polar 7-series owner manuals show the same comm-loss condition as flashing snowflake icons rather than a counted flash. Specific to the newer Polar controls.
● Last verified 2026-06-29 · compiled from manufacturer documentation. Codes can vary by model year — always cross-check your unit’s manual.