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Old 07-30-2015, 05:18 PM   #1
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2005 American Coach water heater

We recently purchased a used 2005 American Tradition 40 ft motorhome. Under the bathroom sink is a switch labeled WATER HEATER but doesn't say what it's for. Any ideas of what it does.

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Old 07-30-2015, 05:24 PM   #2
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Originally Posted by thehop View Post
We recently purchased a used 2005 American Tradition 40 ft motorhome. Under the bathroom sink is a switch labeled WATER HEATER but doesn't say what it's for. Any ideas of what it does.
In my MH, that switch is for the electric side of the HW, the Gas part is on the main control panel. Open up the water heater door on the out side of the coach and write down the make and model of the water heater from the tag. Then you can research it here or give google a shot on finding the operators manual for it.

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Old 07-30-2015, 05:38 PM   #3
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It is the on/off switch for the electric element in your HWH.

Naturally it will only work when on shore power or the genny is running unless you have a large inverter and battery bank.

The propane burner side of the unit will have a separate switch. Mine is in the kitchen area next to the water pump switch....yours is likely somewhere close but not exactly where mine is.
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Old 07-30-2015, 06:41 PM   #4
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Some hot water heaters you can turn on the electric and gas, electric will be first stage and the gas will back it up if it doesn't keep up. Really nice at night when plugged in and the gas side doesn't kick on if you are light sleepers.
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Old 07-31-2015, 09:09 AM   #5
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Yeap - 120v electric mode for the water heater. Same place on my 2004 Tradition. It's actually a 12v switch that triggers a relay, which in turn activates the 120v heater element.

The switch in the galley labeled "WTR HEAT" is for LP gas mode only. You can use either mode, or both at the same time for faster heating.
Gary Brinck
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL
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Old 07-31-2015, 10:08 PM   #6
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Thanks everyone that explains it to me. Now I know why there is an water heater switch in the kitchen also. Didn't realize one was for the gas the other for the electric. Now I know....thank you again.

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