Where is the thermocouple on my RV furnace?

Inside the main burner there will be an assembly containing both the thermocouple and the pilot flame burner. The thermocouple is cylindrical and sits in the pilot flame; hence it will be the topmost of the pilot burner/thermocouple combination.

Do RV furnaces have thermocouples?

Many new RV furnaces have replaced the pilot light with a direct spark ignition system. If your furnace is struggling to keep the pilot light lit, check the thermocouple to make sure it’s positioned correctly. A malfunctioning regulator on your propane tank could also result in an irregular pilot light.

How do you test an RV thermocouple?

Hold the ignition to bypass the thermocouple, and then give the heat sensor roughly 30 seconds to heat up. The flame should be steady and mostly blue, and the thermocouple should be about half an inch inside the flame.

Will a pilot light stay lit with a bad thermocouple?

A thermocouple senses the heat of the pilot and allows gas to flow to the burner. A bad thermocouple will shut off gas to both the pilot and the burner so the pilot light won’t stay lit.

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How do you check if a thermocouple is working?

If the thermocouple is working, you should be able to measure 30 to 40 millivolts of voltage at the connection end of the tube when the pilot flame is on. You can test this yourself using a multimeter, but you may need a helper to keep the pilot flame burning while you do it.

Does a camper furnace have a pilot light?

Note: Most modern RV furnaces have a direct spark ignition system that replaces a pilot light. If the battery is good and you have electricity to the RV’s heater next check the thermostat.

How do RV furnaces work?

An RV heater is a forced-air heater. What this means is that when the air in your RV falls below the temperature on the thermostat, hot air is forced through the vents and into the living space. That hot air is created using a flame fed by propane and forced out of the vents in your rig by a blower fan.

Why did my RV furnace stop working?

One other RV heater troubleshooting tip is: check the thermocouple. Be sure it is clear of any spider webs or insect nests. The thermocouple needs to be in the correct position in the burner to work correctly. If the thermocouple is bad, remove it and buy one exactly the same as the one you are replacing.

How do you fix a pilot light that keeps going out?

What do I do if my pilot light keeps going out?

  1. Find the gas shut-off knob and turn to the “Off” setting. …
  2. Remove the access panel to access the burner.
  3. Turn the knob to “Pilot” to start the flow of gas. …
  4. While still holding the gas knob, light the pilot with a long lighter.
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Can I replace a thermocouple myself?

The No. 1 cause of pilot lights that won’t stay lit is a worn-out thermocouple. It’s easy to replace and a new one costs $5 to $10. … Then unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve.

How much does it cost to replace a thermocouple on a furnace?

Cost to Replace a Thermocouple on a Furnace



Replacing a thermocouple costs $150 to $250, mostly due to labor time. On older models without an ignitor, it checks to make sure your pilot light is lit. If it’s not, it’ll shut the gas off.

Why Is My RV fridge not working on electric?

You need to check for tripped circuit breakers in your RV’s electrical compartment. If you find a tripped circuit breaker, reset it and try running the fridge on electric again. … If you have no tripped circuit breakers then my first guess is still that the Electrical Refrigerator Heating Element has gone bad.

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