Water heater problem

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Donald John

New member
Jul 27, 2021
bought a 2021 winnebago 2108fbs and my water heater keeps blowing the thermocouple when I close the door on the unit.. it works ok when I leave it open.. I think maybe it is getting to hot with door closed..
Any thoughts or ideas?


Well-known member
Nov 15, 2015
Colorado Plains
Not enough information, there.
Which door are you referring to, and how does it "blow the Thermocouple"?
But Yeah, as Rene said, take it back to the dealer while it's still under warranty.

Henry J Fate

Well-known member
Jun 14, 2018
As far as I can tell, the trailer comes standard with a 6 gallon gas electric Suburban water heater. Electronic ignition.

The unit uses a sensing device that creates spark to lite the gas and then varifies a flame. The sensor is connected to the control board.

If the sensor is "blowing" it would require a flame backing up into the ignition area.

I have not seen those new Suburbans but it is possible that a safety thermal couple of some type is behind the cover to protect from fire if the flame backs up through the ignition area and into the area behind the access door.

Make sure there are no obstructions in the water heater so that the flame flows properly.

Dealer appointments are not fun this time of year and will usually take extra time for warranty work.

Be cautious and use the electric option while waiting for service.

One other note.... Running both gas and electric at the same time can cause the high limit to trip. Usually these high limits are manually reset so if that is what is blowing, try only using one heating source.
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Gary RV_Wizard

Site Team
Feb 2, 2005
At our Silver Springs FL home
Please explain "blow the thermocouple". The only actual thermocouple is the ignition sensor (flame detector) and that doesn't "blow" in any way I can think of. If you are referring to the ECO switch or the PT Relief water valve, that's a somewhat different problem than a thermocouple.

Also, please verify the make/model of water heater. Micro Minnie brochure just says "6 gallon DSI water heater". Atwood or Suburban or some other brand?
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