RV Refrigerator Not Working on Propane? (but works on AC)

RV Refrigerator Not Working on Propane?

Why Your RV Fridge Works on Electric but Not Gas

If your RV refrigerator cools normally on electric power but won’t run on propane, the problem is usually related to the refrigerator’s burner and orifice system or gas supply.

Most RV absorption refrigerators are designed to operate on both 120-volt electricity and propane, allowing them to run while traveling or camping without shore power.

When propane operation fails, the refrigerator may still work normally when plugged into electricity.

This issue can occur with many popular RV refrigerator brands including Norcold and Dometic refrigerators.

Below are the most common reasons an RV refrigerator will not operate on propane.

How RV Refrigerators Use Propane

When running on propane, an RV refrigerator uses a small burner assembly to heat the cooling unit.

This heat drives the absorption cooling cycle that allows the refrigerator to remove heat from the interior compartments.

The propane system typically includes:

• propane supply line
• gas valve
• burner tube
• igniter electrode
• control board

If any of these components fail, the refrigerator may not ignite the burner.

Step 1: Check Your Propane Supply

The first thing to check is whether propane is reaching the refrigerator.

Common propane supply issues include:

• empty propane tanks
• propane tank valve turned off
• air trapped in propane lines
• low propane pressure

If other propane appliances such as the stove or furnace are also not working, the issue may be with the propane supply rather than the refrigerator itself.

Step 2: Inspect the Burner Assembly

The burner assembly is where propane is ignited to heat the cooling unit.

Over time, burner tubes can become dirty or clogged with debris.

Common burner problems include:

• rust buildup
• insect nests inside burner tubes
• blocked propane jets
• misaligned burner flame

Cleaning the burner assembly often restores proper operation.

Step 3: Check the Igniter

RV refrigerators use an electronic igniter to light the propane burner.

If the igniter fails, the refrigerator may not be able to ignite propane even though gas is present.

Signs of a faulty igniter include:

• repeated clicking sounds with no ignition
• propane smell without flame
• refrigerator displaying ignition error codes

Replacing the igniter can often resolve the issue.

Step 4: Check the Gas Valve

The refrigerator’s control board activates a gas valve that allows propane to flow into the burner.

If the gas valve fails, propane will not reach the burner.

Symptoms of a faulty gas valve include:

• no propane flow
• burner never attempting ignition
• refrigerator running only on electric mode

Step 5: Inspect the Control Board

The control board manages both electric and propane operation.

If the control board fails, it may prevent the refrigerator from switching to propane mode.

Signs of a control board problem include:

• refrigerator stuck in electric mode
• ignition cycle never starting
• inconsistent propane operation

Control boards are one of the most commonly replaced RV refrigerator components.

Other Things That Can Prevent Propane Operation

A few additional issues can also cause propane problems.

Operating in high altitude

All gas absorption refrigerators should be run below 5000' in elevation. The reason for this is that the air gets too thin at the 5000' mark which diminishes the flame and doesn't allow enough heat to properly boil the ammonia.

Air in the Propane Lines

If the RV has been sitting unused, air may enter the propane lines and prevent ignition.

Running the stove for several minutes can purge air from the system.

Dirty Flame Sensor

Some refrigerators use flame sensors that shut down the burner if the flame is not detected.

A dirty sensor may incorrectly signal that the burner has failed.

Common RV Refrigerator Parts That Fix Propane Problems

Most propane-related refrigerator problems can be solved by replacing a few components.

Common replacement parts include:

These parts are available for many models of Norcold and Dometic RV refrigerators.

Finding the Correct Replacement Parts

To identify the correct replacement parts, locate the model number label inside your refrigerator compartment.

Once you have the model number, you can search for compatible parts by model or category.

RVFridgeGuys.com carries one of the largest inventories of RV refrigerator replacement parts available online, including parts for Norcold, Dometic, and Furrion refrigerators.

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