Polar Refrigerator Error Code no FL

The no FL code on Polar N7LX and N8LX refrigerators means the burner failed to ignite or lost its flame during operation and could not re-ignite. The control system requires confirmation of a flame signal before allowing the absorption cooling cycle to run. The unit locks out and displays this code as a safety measure to prevent unburned gas buildup. Restoring proper ignition requires checking gas supply, burner condition, and the ignition components.

Yes, the no FL condition is treated as a safety lockout because unconfirmed ignition means gas could be released without combustion occurring. The unit intentionally stops the ignition attempt and displays the code to alert the user. Do not repeatedly attempt to restart the unit in an enclosed space if you suspect a gas supply issue. Ensure the area is ventilated and address the root cause before resuming operation.

If the fix is simply cleaning the burner or opening a closed valve, the repair involves no parts cost and only the time for diagnosis and cleaning. Replacement components such as an igniter electrode or flame sensor typically range from around $20 to $80 depending on the part. If a control board replacement is required, costs can range from $100 to $250 or more for the part alone. Adding professional labor charges will increase the total, so performing basic gas supply and burner checks yourself first can help avoid unnecessary service calls.

Start by confirming the propane tank has fuel, both the tank valve and the manual shut-off valve are fully open, and gas pressure at the appliance is 10.5 in. W.C. Next, inspect the burner for dirt, debris, or blockages and clean it as needed. If the gas supply and burner are in good condition, check the igniter electrode for damage and verify the flame sensor is functioning correctly. If those components test acceptable, inspect the wiring and connectors between the sensor, igniter, and control board.

A reset may clear the lockout temporarily and allow the unit to attempt ignition again, but if the underlying cause is not resolved the code will return immediately. Common causes such as low gas pressure, a blocked burner, or a failed igniter must be corrected first. Simply resetting without diagnosing the fault is not a reliable fix and repeated lockouts can indicate a more serious component failure.