RV refrigerator works on electric but not propane
What this usually means
As with the reverse symptom, this eliminates the cooling unit — electric cooling proves it works. The fault is on the gas side: propane supply, the valve, the burner, or flame sensing. The difference is that this side is a combustion system with a vented exhaust, so the diagnosis stops being owner work much earlier.
Check this first
Confirm propane is actually available and flowing: the tank valve is open, there is gas in the tank, and another propane appliance lights normally. A fridge is often the first appliance used after a long gap and regularly takes the blame for an empty tank.
Most likely causes
Ordered by how often each one turns out to be the answer, with the tell that distinguishes it.
No propane, or a closed tank valve
most commonOther propane appliances also fail to light.
Obstructed burner or orifice
commonCommon after storage; spiders and insects nest in burner tubes.
Failed gas valve or ignition control
commonRepeated clicking with no light, or it lights and immediately drops out.
Flame sensing failure
commonIt lights briefly and then shuts down, repeatedly.
Regulator problem
less commonSeveral propane appliances misbehave together, especially in cold weather.
What you can safely check
- 01
Confirm propane supply at another appliance
If the stove lights normally, propane is present and the problem is at the fridge. If nothing lights, the problem is upstream and simpler.
- 02
Note the failure pattern precisely
No ignition attempt at all, repeated clicking with no flame, or lights-then-drops-out. Those three describe three different faults.
- 03
Look at the exterior vent for soot
Black staining around the vent indicates incomplete combustion. Report it — do not keep running the appliance.
- 04
Note how long since it last ran on gas
Months of disuse is the classic setup for a nest-obstructed burner, which is a routine finding after storage.
What needs a technician
Everything on the gas side. The burner, orifice, gas valve, flue and flame sensing are a sealed combustion path — disturbing it incorrectly is precisely how combustion products reach the inside of a coach. Clearing a burner is technician work, not an owner task.
Parts typically involved
So you know what a quote should be naming. We publish no prices — real costs vary by market, season and technician, and a number we invented would look authoritative and help nobody.
- Burner assembly or orifice
- Gas valve
- Igniter or flame sensor
- Control board
- Propane regulator
When to stop troubleshooting
- You smell propane at any point — shut off at the tank, ventilate, and get everyone out
- There is soot at the exterior vent or a yellow rather than blue flame
- It has failed to light repeatedly — each attempt admits gas to a chamber that is not burning it
Can you still travel?
The coach drives normally and the fridge still works on shore power or generator. If you smelled propane at any point, close the tank valve and have the system checked before using any gas appliance.
Common questions
- Why does the gas side fail after storage so often?
- Because insects nest in burner tubes and orifices during the months the appliance is unused, and it takes very little obstruction to stop a small burner working properly. It is one of the most common seasonal findings on any RV gas appliance, and it is the reason a pre-season check is worth more than the same check mid-season.
- Can I clean the burner myself?
- It is not owner work, and the reason is specific rather than cautious. The burner sits in a sealed combustion path that vents outside; disturbing or misaligning that path is how carbon monoxide gets into a coach. Looking at the exterior vent is fine. Anything inside the flue or burner assembly is a technician job.
Related failures
For the whole system rather than this one symptom, see RV refrigerator repair.
Next step
Work through structured triage for this system and you will end up with a written service brief: what you observed, in what order, and what has not been established yet. It is the document that lets a technician quote properly instead of guessing on arrival.
Being straight about what this is. No technician is signed to any territory yet — not one. We do not match you, dispatch anyone, or promise a call. What you get is the brief, and a request form that copies it to us so we know the demand is real. If you need someone today, take the brief and send it to a local technician directly; it works just as well that way.