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Error code reference

Norcold Refrigerator Error Code no FL

Power Board was not able to detect a flame present at the burner

Norcold codesNorcold refrigerator codes

Power Board was not able to detect a flame present at the burner. Displayed in Manual LP Gas Mode only (or in conjunction with other faults in Auto Mode).

First step from the service manual

Verify all LP gas shutoff valves are open, LP gas pressure is 11.5" W.C., gas supply line free of air, burner clean, electrode gap 1/8" to 3/16", spark-sense igniter wire in good condition, gas valve solenoid resistance 74-92 ohms.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What no FL means on a Norcold refrigerator

The no FL error code on a Norcold refrigerator indicates that the power board failed to detect a flame at the burner during an LP gas ignition attempt. This fault appears exclusively in Manual LP Gas Mode, though it can also appear alongside other fault codes in Auto Mode. The power board monitors the burner flame through the spark-sense igniter wire and electrode assembly. When ignition is attempted and no flame signal is confirmed within the allotted trial period, the board logs the no FL fault and shuts down the gas valve to prevent unburned propane from accumulating.

The LP gas supply system is the first area to inspect. The gas pressure must be at 11.5 inches water column (W.C.) for proper burner operation. Closed or partially closed LP shutoff valves, a depleted tank, or air trapped in the supply line after a tank change are common upstream causes. The burner itself must be clean and free of debris that could obstruct the flame. The electrode gap requires precise setting between 1/8 inch and 3/16 inch. A gap outside this range will produce a weak or misdirected spark that fails to ignite the gas reliably.

The spark-sense igniter wire carries both the high-voltage spark signal for ignition and the flame-sensing signal back to the power board. Damage, corrosion, or a loose connection on this wire can prevent the board from confirming a flame even if ignition actually occurs. The gas valve solenoid is another critical component: correct resistance should read between 74 and 92 ohms. A solenoid reading outside this range indicates a failing or failed coil that may not open fully, restricting gas flow to the burner.

Source: manufacturer service documentation.

Common causes of no FL

  1. 01

    LP gas supply issue

    Wiring / connection

    Closed shutoff valves, a nearly empty tank, or air in the supply line after a tank swap can prevent gas from reaching the burner. Confirm all valves are fully open, the tank has fuel, and the line is purged of air.

  2. 02

    Incorrect LP gas pressure

    Part replacement

    Gas pressure must be at 11.5 inches W.C. for reliable ignition. Low pressure, often caused by a failing regulator, will not support a stable flame.

  3. 03

    Dirty or obstructed burner

    Wiring / connection

    Debris, insect nests, or carbon buildup on the burner can block gas flow or distort the flame, preventing the sensor from detecting proper combustion. Clean the burner assembly thoroughly.

  4. 04

    Electrode gap out of specification or damaged igniter wire

    Part replacement

    The electrode gap must be between 1/8 inch and 3/16 inch. A gap outside this range produces a weak spark. A damaged or corroded spark-sense igniter wire can also prevent the power board from receiving a flame confirmation signal.

  5. 05

    Gas valve solenoid failure

    Part replacement

    The gas valve solenoid should measure between 74 and 92 ohms. A reading outside this range indicates a degraded coil that may not open the valve sufficiently to allow gas flow to the burner.

See the test procedure for each cause

Frequently asked questions about no FL

What does no FL mean on a Norcold refrigerator?
The no FL code means the power board could not detect a flame at the propane burner after an ignition attempt. It appears in Manual LP Gas Mode or alongside other faults in Auto Mode. The refrigerator shuts down gas flow as a safety precaution when flame presence cannot be confirmed. Common causes include LP supply problems, a dirty burner, incorrect electrode gap, a damaged igniter wire, or a faulty gas valve solenoid.
How do I fix the no FL error on my Norcold refrigerator?
Start by confirming all LP shutoff valves are fully open and the tank has adequate fuel. Check that LP pressure is at 11.5 inches W.C. and purge any air from the line after a recent tank change. Clean the burner, verify the electrode gap is between 1/8 and 3/16 inch, and inspect the spark-sense igniter wire for damage or loose connections. If those steps do not resolve the fault, test the gas valve solenoid resistance, which should read between 74 and 92 ohms.
Is the no FL error on a Norcold refrigerator a safety concern?
The no FL fault is a built-in safety response. When the power board cannot confirm a flame, it closes the gas valve to prevent unburned propane from accumulating in the burner area. This makes the fault itself safe, but you should not repeatedly attempt to restart the unit without diagnosing the root cause first. Repeated failed ignition attempts with a gas supply issue present can allow propane to collect before the board shuts down.
Will resetting the Norcold refrigerator clear the no FL code?
A reset may clear the displayed fault temporarily, but the no FL code will return on the next ignition attempt if the underlying cause has not been corrected. The power board re-evaluates flame presence each time LP mode is activated. Diagnose and correct the root cause, such as a gas supply problem, blocked burner, or faulty solenoid, before relying on a reset to restore normal operation.
How much does it cost to repair a no FL error on a Norcold refrigerator?
Repair cost depends on which component is at fault. If the fix involves cleaning the burner, adjusting the electrode gap, or purging the gas line, the cost can be minimal. Replacing a gas valve solenoid or LP regulator typically involves parts costs ranging from roughly 30 dollars to over 150 dollars, plus labor if a technician is needed. A damaged igniter wire or electrode assembly also falls in that mid-range cost category for parts.

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