Fault codes / Norcold fridge / ON and CHECK both flashing
Norcold fridge: ON and CHECK both flashing
What it means: No energy source: no 120V and the burner did not light.
What to check
Check 120V at the fridge outlet and the 8A fuse on the board, then LP: bleed the line, prove pressure. Switch OFF then back to AUTO to retry.
Learn the system
- Absorption fridges (gas/electric)
- 12V compressor and residential fridges
- Absorption fridge won't run on gas
- Absorption fridge won't run on electric
Practice it on a service call
Guided diagnosis
Other Norcold fridge codes
- Norcold fridge code no co No cooling detected
- Norcold fridge code no FL Burner did not ignite or re-ignite
- Norcold fridge code no AC No 120V AC available
- Norcold fridge code AC LO 120V is too low
- Norcold fridge code dc LO 12V control voltage too low
- Norcold fridge code dr Door open more than 2 minutes
- Norcold fridge: No display No 12V control power, or the fridge is off
- Norcold fridge: Flashing temperature Backup Operating System (BOS) is active
- Norcold fridge code AC rE Internal control fault
- Norcold fridge code AC HE Internal control fault
- Norcold fridge code Sr Internal control fault
- Norcold fridge code AC HI 120V above 132V
- Norcold fridge code Lo dc 12V below 10.5V at the power board (alarm below 8.5V)
- Norcold fridge code dc HI 12V above 15.4V
- Norcold fridge code dc rE DC heater relay stuck closed (3-way)
- Norcold fridge code dc HE DC heater current too low (3-way)
- Norcold fridge code no dt Display lost communication with the power board
- Norcold fridge code L1 oP High temperature limit switch open or unplugged
- Norcold fridge code FL -- Flame sensed when there should be none
- Norcold fridge: Check lamp on Ignition failure, gas lockout
- Norcold fridge: ON lamp blinks off 3 times every 3 s AC heater open
- Norcold fridge: ON lamp blinks off 5 times No cooling detected
Full field guide: Norcold 1200 series fridge
Codes come from the maker manuals and public service sheets. Your model's own chart always wins, and LP and 120 volt work belongs to a qualified technician.