Dometic Refrigerator Error Code CHECK

The CHECK code means the refrigerator attempted to ignite the LP gas burner and did not detect a successful flame within the approximately 45-second ignition trial period. The control board then locked out LP mode and displayed the code to indicate the failure. This can be caused by issues ranging from air in the propane line to a faulty igniter or gas valve. Pressing the power button OFF and then ON restarts a fresh ignition attempt.

The CHECK lockout is itself a safety feature. The control board stops attempting ignition after the trial period to prevent unburned propane from accumulating. If you smell gas near the refrigerator or the burner compartment, turn off the LP supply at the tank immediately and ventilate the area before attempting any reset or diagnosis. In the absence of a gas smell, the error can be diagnosed and reset without immediate safety risk.

If the cause is air in the lines or an empty tank, there is no repair cost beyond refilling the propane. Cleaning a blocked burner orifice is also a low-cost or no-cost fix if done yourself. Replacing an igniter electrode or flame sensor typically costs between $20 and $80 in parts, with professional labor adding $75 to $150 or more depending on the service provider and location. A failed gas valve is the most expensive single component, with parts and labor potentially ranging from $150 to $350 or higher.

Pressing the main power ON/OFF button to OFF and then back to ON will clear the lockout and start a new 45-second ignition trial. If the underlying cause is simply air in the LP line or a momentary supply interruption, repeating this reset 3 to 4 times is often enough to resolve the error. If the CHECK code returns every time, a component issue such as a blocked orifice, bad electrode, or empty tank needs to be addressed before the error will stay cleared.

Start by pressing the power button OFF then ON up to 4 times to purge any air from the LP lines and allow the system to reattempt ignition. Verify that the propane tank is not empty and that the tank valve is fully open. If the error persists, inspect the burner assembly for debris or blockages and clean the orifice if needed. If cleaning does not resolve the issue, the igniter electrode, flame sensor, or gas valve may need to be tested and replaced.