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07-30-2019, 07:39 AM
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#1
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Montana Fan
Join Date: Jan 2018
Location: Boone
Posts: 311
M.O.C. #21011
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Water Heater Luke Warm on Electric
Water heater only gets Luke warm on electric. Thought it was an easy problem. I replaced element, but the old element was fine. When on electric, I have 120v to the element? Gas works great, but prefer electric to work. Any ideas?
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2018 Montana HC 362RD
2016 Chevrolet 3500 Duramax HD SRW
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07-30-2019, 08:07 AM
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#2
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,362
M.O.C. #4831
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Most likely if it heats at all, then it is the thermostat that is bad. An easy and inexpensive fix
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Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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07-30-2019, 10:04 AM
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#3
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Established Member
Join Date: Jun 2018
Location: The Great Pacific Northwest
Posts: 38
M.O.C. #21926
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I have found that if you switch on the electric switch in the panel in coach, all you gets is luke warm water. I have to go out to the heater and remove the cover and flip the switch to on at the heater.
Then it is hot. Of course if you require FAST recovery and more hot water, turn on the gas. Both work great together.
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Bigrig
2017 Chevy Silverado 2500 HD Diesel
2018 Montana 3811MS
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07-30-2019, 10:28 AM
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#4
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Montana Master
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
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The switch at the heater has to be on for the HWH to work properly. Just leave it on all the time, operate from the inside switch for turn-on/off when on electric mode.
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Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
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07-30-2019, 10:53 AM
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#5
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,165
M.O.C. #6433
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Starting with cold water, it does get to at least lukewarm? That would seem to indicate the thermostat was working, but not correctly. It is a surface mount device, so easy and cheap to change.
https://www.google.com/search?client...ter+thermostat
There are other possibilities. There could be a poor connection somewhere limiting current to the heating element. Bad outside switch is one. And there have been several reports of burned neutral wiring in the junction box on the back of the water heater.
The above was assuming you have a Suburban WH.
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Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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07-30-2019, 01:22 PM
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#6
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Seasoned Camper
Join Date: Apr 2009
Location: adin
Posts: 82
M.O.C. #9226
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water hester
just had the same problem.the thermostat was toast. $13.00 and a 15 minutes to replace
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07-30-2019, 04:23 PM
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#7
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Montana Master
Join Date: May 2011
Location: Hixson
Posts: 3,436
M.O.C. #11397
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Mybe someone accidentally switched to WH bypass?
__________________
2018.5 Montana 3791RD
Full Timers 9/1/2010 through 1/16/2020.
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07-30-2019, 08:10 PM
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#8
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Montana Fan
Join Date: Jan 2018
Location: Boone
Posts: 311
M.O.C. #21011
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Wow, 30 years of doing this and forgot the outside switch. It warmed up just fine after I turned it on, but that wasn’t the problem before I changed the element out. Oh well, fine now. Thanks to everyone for reminding me to check the switch. I can’t wait until i retire, I’ll forget everything then. Lol. Thank you!!
__________________
2018 Montana HC 362RD
2016 Chevrolet 3500 Duramax HD SRW
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Linear Mode
