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Error code reference

Dometic Refrigerator Error Code Flashing Red (10 sec)

No spark achieved at the burner on gas mode within approximately 10 seconds (3rd generation), possibly caused…

Dometic codesDometic refrigerator codes

No spark achieved at the burner on gas mode within approximately 10 seconds (3rd generation), possibly caused by a grounded electrode assembly.

First step from the service manual

Check electrode for grounding, inspect high voltage wire for shorts to ground, verify electrode gap is 3/16 inch.

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

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What Flashing Red (10 sec) means on a Dometic refrigerator

The flashing red light with a 10-second cycle on a Dometic 3rd generation refrigerator indicates a failed ignition event in gas mode. When the unit attempts to operate on LP gas, the control board activates the igniter and monitors for a successful spark at the burner electrode. If no spark is detected within approximately 10 seconds, the board registers a fault and displays this warning. This is a lockout condition, meaning the gas valve will not open and the refrigerator will not cool on gas until the fault is cleared.

The most likely root cause in this fault code is a grounded electrode assembly. The high-voltage ignition circuit relies on a complete, isolated path from the igniter module to the electrode tip, where the spark jumps across a precisely calibrated gap to ignite the burner. If the electrode body or the high-voltage wire contacts the chassis, burner housing, or any grounded metal surface, the voltage bleeds to ground instead of producing a spark at the tip. The correct electrode gap specification is 3/16 inch. A gap that is too wide or too narrow can also prevent a reliable spark from forming.

Diagnostic work should begin with a visual inspection of the electrode assembly for cracks, carbon tracking, or physical contact with surrounding metal components. The high-voltage ignition wire should be traced along its full length and inspected for damaged insulation, pinched sections, or contact with grounded surfaces. Confirming the electrode gap with a feeler gauge is a straightforward step that can rule out a mechanical misalignment. If the wire or electrode body shows signs of arcing or damage, replacement of the electrode assembly is typically required.

Source: manufacturer service documentation.

Common causes of Flashing Red (10 sec)

  1. 01

    Grounded electrode assembly

    Part replacement

    The electrode body is making contact with a metal surface, allowing voltage to bleed to ground instead of producing a spark at the tip. Inspect the electrode for cracks, carbon deposits, or physical contact with the burner housing.

  2. 02

    Damaged or shorted high-voltage ignition wire

    Part replacement

    The wire running from the igniter module to the electrode may have worn or cracked insulation that allows it to short against the chassis or burner assembly. Trace the full length of the wire and look for pinching, melting, or arcing marks.

  3. 03

    Incorrect electrode gap

    Wiring / connection

    The gap between the electrode tip and the ground point must be 3/16 inch. A gap that is too wide or too narrow will prevent a reliable spark from forming. Use a feeler gauge to verify and adjust the gap as needed.

  4. 04

    Cracked or contaminated electrode insulator

    Part replacement

    The ceramic insulator surrounding the electrode can crack from heat cycling or become coated with grease and carbon, creating a path for voltage to ground. A cracked insulator requires electrode replacement.

  5. 05

    Faulty igniter module

    Part replacement

    If the electrode, wire, and gap all check out correctly, the igniter module itself may not be generating sufficient high voltage to produce a spark. This is less common but should be considered after ruling out the electrode circuit.

See the test procedure for each cause

Frequently asked questions about Flashing Red (10 sec)

What does Flashing Red (10 sec) mean on a Dometic refrigerator?
This code means the refrigerator attempted to ignite the LP gas burner but failed to achieve a spark within approximately 10 seconds. It is a 3rd generation control board fault that locks out gas operation until the ignition problem is resolved. The most common cause is a grounded electrode assembly or a shorted high-voltage ignition wire. The unit will not cool on gas until the fault is diagnosed and corrected.
How do I fix the flashing red light on my Dometic refrigerator in gas mode?
Start by inspecting the electrode assembly for cracks, carbon tracking, or contact with any grounded metal surface. Check the high-voltage wire along its entire length for damaged insulation or pinching. Verify the electrode gap is exactly 3/16 inch using a feeler gauge. If the electrode or wire is damaged, replacement of the affected component is required.
Will resetting my Dometic refrigerator clear the flashing red fault code?
A reset may temporarily clear the fault and allow the unit to attempt ignition again, but if the underlying problem with the electrode or wiring is not corrected, the fault will return within the next ignition cycle. Resetting without repairing the root cause is not a lasting solution and the unit will continue to fail on gas mode.
Is a flashing red light on a Dometic refrigerator a safety concern?
The fault code indicates the ignition system failed to spark, which means the gas valve did not open and no gas was released into the burner area. The control board is functioning as intended by preventing gas flow without a confirmed ignition event. However, you should still inspect the electrode and wiring promptly, as a shorted high-voltage wire can degrade further and a cracked electrode can worsen over time.
How much does it cost to repair the ignition issue causing the flashing red code on a Dometic refrigerator?
Repair costs depend on which component has failed. An electrode assembly replacement typically runs in the range of $20 to $60 for parts, while a high-voltage ignition wire or igniter module can range from $30 to $100 or more depending on the specific model. If a technician is needed to diagnose and perform the repair, labor costs will add to the total.

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