Water Heater won't stop? - Dutchmen Owners

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Old 07-20-2015, 04:39 PM   #1
Join Date: Oct 2014
Location: Sechelt
Posts: 19
British Columbia
Water Heater won't stop?

2013 Voltage 3005 (35')

As the title says, when on gas is does not shut down, and I don't like to let it burn too long. I'd expect the pressure relief to open, but when it burns for 45 minuets I get nervous and shut it off. Electric operation I am unsure of, I have not been plugged into shore for 4 months now.

I was expecting to see a temperature setting adjustment, but nothing obvious. Is there a way to test the thermostat?


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Old 07-20-2015, 05:04 PM   #2
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sundancer 87's Avatar
Join Date: Dec 2012
Location: Tahlequah
Posts: 2,905
Do you have ne of these guys?

One is electric or electronic cut off and the other is the preset thermostat. They both are spring loaded to the tank proper, they both utilize the bi-metallic process. One piece of metal contracts or expands at a different temperature, hence the switching on/off process is accomplished.

These guys are normally in a closed state to allow the heater to come on and heat until the temperature is reached. When one or the other gets to temperature the bi-metallic strip opens and shuts the system down.

You can remove them and check them with a VOM. They will show continuity until you make them open. Submerge them in boiling water, you should hear it snap open. Might even be able to open them with heavy duty hair dryer or heat gun. At any rate they need to open.
You can leave them in place and disconnect one at a time and see if the heater shuts down.
These things aren't rocket science so don't let the local RV guy get rich on you. Amazon has them, eBay has them as well.
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