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Error code reference

Dometic Refrigerator Error Code Flashing Red

LP gas flame failure

Dometic codesDometic refrigerator codes

LP gas flame failure - the refrigerator failed to light on LP gas after approximately 3 minutes of ignition attempts (1st and 2nd generation models).

First step from the service manual

Turn the main switch to OFF, wait approximately 5 seconds, then turn back ON to reset the lighting sequence. Check LP gas supply, ensure all gas valves are open, and check for air in supply lines.

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

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What Flashing Red means on a Dometic refrigerator

The flashing red indicator on a Dometic refrigerator signals an LP gas flame failure. This occurs when the control board has attempted to ignite the burner on LP gas mode for approximately 3 minutes without successfully establishing a flame. The ignition sequence involves the gas valve opening, the igniter producing a spark, and the flame sensor confirming combustion. If the flame sensor does not detect a sustained flame within the allotted ignition window, the board locks out and triggers this fault code. This behavior applies to both 1st and 2nd generation Dometic refrigerator models.

The LP gas system on these refrigerators depends on a consistent gas supply, a functioning igniter, an operational gas valve, and a clean burner assembly. Any interruption in this chain can prevent the burner from lighting. Common hardware contributors include a clogged or corroded burner jet, a weak or failed igniter, a faulty gas valve that is not opening fully, or a flame sensor that is not reading combustion correctly. External factors such as empty or low LP tanks, closed supply valves, or air trapped in the gas lines after a tank change are also frequent culprits.

Before diagnosing internal components, a basic reset and gas supply verification should always be performed first. Turning the main switch OFF, waiting approximately 5 seconds, and turning it back ON will restart the ignition sequence and allow the system another attempt to light. If air has entered the lines after a tank refill or swap, purging the line by briefly using another LP appliance can help. If the fault returns after a successful reset and confirmed gas supply, further component-level diagnosis of the igniter, gas valve, and flame sensor is warranted.

Source: manufacturer service documentation.

Common causes of Flashing Red

  1. 01

    Interrupted or insufficient LP gas supply

    Wiring / connection

    An empty tank, partially closed supply valve, or low line pressure will prevent the burner from receiving enough gas to ignite. Check the LP tank level and confirm all inline valves are fully open before investigating internal components.

  2. 02

    Air in the LP gas supply line

    Wiring / connection

    After a tank swap or refill, air can become trapped in the supply line and prevent gas from reaching the burner during the ignition window. Running another LP appliance briefly to purge the line, or simply resetting and retrying the refrigerator several times, can clear this condition.

  3. 03

    Clogged or corroded burner jet

    Wiring / connection

    Debris, corrosion, or insect nesting material inside the burner jet can restrict gas flow enough to prevent ignition. Inspect the burner assembly and jet orifice for blockages and clean as needed.

  4. 04

    Faulty or weak igniter

    Part replacement

    If the igniter is not producing a strong, consistent spark, the burner will not light even with adequate gas flow. Listen for the clicking of the igniter during the startup sequence and inspect the electrode tip for carbon buildup, cracking, or excessive gap.

  5. 05

    Failed gas valve or flame sensor

    Part replacement

    A gas valve that is not opening properly will starve the burner of fuel, and a flame sensor that cannot confirm combustion will cause the board to lock out even if ignition briefly occurs. Either component failing will consistently reproduce the flashing red fault code after each reset.

See the test procedure for each cause

Frequently asked questions about Flashing Red

What does Flashing Red mean on a Dometic refrigerator?
The flashing red light on a Dometic refrigerator indicates an LP gas flame failure. The refrigerator attempted to ignite the propane burner for approximately 3 minutes without successfully establishing a flame, then locked out and activated the fault indicator. This applies to both 1st and 2nd generation Dometic models. The cause can range from a simple gas supply issue to a faulty internal component like the igniter or gas valve.
How do I fix the flashing red light on my Dometic refrigerator?
Start by turning the main switch to OFF, waiting approximately 5 seconds, and turning it back ON to reset the ignition sequence. At the same time, verify your LP tank has fuel, confirm all gas supply valves are fully open, and check for air in the supply line if you recently changed tanks. If the fault returns after a confirmed good gas supply, inspect the burner jet for clogs and evaluate the igniter and flame sensor for component failure.
Is a flashing red light on a Dometic refrigerator a safety concern?
The fault lockout is itself a safety feature, as the refrigerator stops repeated ignition attempts after the allotted window to prevent unburned gas from accumulating. If you smell propane near the unit, ventilate the area immediately and do not attempt to reset or operate the appliance until the source of the leak is identified and resolved. In the absence of a gas odor, the flashing red code is generally a diagnostic indicator rather than an immediate hazard.
Will resetting the refrigerator clear the flashing red code?
Resetting by cycling the main switch OFF and back ON will clear the lockout and allow the refrigerator to attempt ignition again. However, if the underlying cause such as low gas pressure, a clogged burner, or a failed component is not corrected, the fault will return within the next ignition cycle. The reset is a starting point for diagnosis, not a permanent fix on its own.
How much does it cost to repair a Dometic refrigerator with an LP flame failure error?
Repair costs vary widely depending on the root cause. If the issue is only a gas supply problem or air in the line, there may be no parts cost at all. Replacing a failed igniter typically falls in the range of $30 to $80 in parts, while a gas valve replacement can range from $60 to $150 or more depending on the specific model. Adding labor costs for a service technician can bring total repair costs to $150 to $400 or higher for component-level repairs.

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