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05-07-2014, 04:35 AM
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#1
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Established Member
Join Date: Oct 2010
Location: Oblong
Posts: 15
M.O.C. #10867
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Hot Water heater not working on electric
Just found out my hot water heater in 2011 3150 is not working on electric but working fine on Gas, I have installed a new element, have power at breaker and 12 volt power to both switchs, and both switches are on. Is there a relay are something else I can check?
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05-07-2014, 06:20 AM
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#2
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Montana Fan
Join Date: Mar 2011
Location: BEND
Posts: 350
M.O.C. #11243
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Ours went out too on our 3150 and I thought I might have fried the element. But it ended up being a thermostat, the dealer changed it and it works fine now.
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05-07-2014, 07:10 AM
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#3
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Montana Master
Join Date: Aug 2010
Location: Washington Coast
Posts: 2,688
M.O.C. #10696
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My t-stat high temp switch has burned up twice, went to E bay bought 2 of them 19.00 ea all is good now and takes all of 10 min to replace(2 wires and one nut),take the black reset cover off and look at the two switches the one on the left is the 120v stat and on mine you can see it was burned and the wires as well were burned , My part # for the high temp switch in my 12 gal Suburban is #232306
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05-07-2014, 07:23 AM
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#4
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,702
M.O.C. #12947
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We had to replace our 120V thermostat last year also. Some time after replacing it, I read that Suburban had a recall, I think, on those thermostats that had a red reset button. The button color obviously was not the problem, but they were not up to spec from their supplier. The new thermostat I installed has the grey button, and has been working ever since. OZZ has those parts if you haven't replaced yours yet.
__________________
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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05-07-2014, 08:30 AM
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#5
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Site Team
Join Date: Aug 2007
Location: Omaha
Posts: 6,750
M.O.C. #7560
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The t-stat has already been mentioned but also check the fuse or breaker and see if that has blown and you might even check the AC switch on the outside of the heater to see if it may have been accidently been turned off. Did that once and it drove me nuts and when I found it was the switch I really felt dumb! Oh well, can't be prefect all the time!
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05-07-2014, 02:05 PM
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#6
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Montana Master
Join Date: Jul 2004
Location: Washburn
Posts: 591
M.O.C. #1782
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Had the same problem. Mobil repair guy found that in the electrical box on top of the water heater where wires were connected was at fault. Wires were poorly connected and they failed. Heavily blacked and shorted out. Luckily the Monty didn't burn up. Actually might not have been a bad idea as we have been very disappointed in the Monty. Workmanship has definitely gone down hill from our 2004 2980RL.
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05-07-2014, 02:44 PM
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#7
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Montana Master
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
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since you just replaced the element, then you know how to access the heating element. Check that you have 120vac to the element. Sounds like you don't have and so the issue will be the T-stat that is beside the pressure relief valve behind the rubber cover that has 2 buttons on it. John
__________________
2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
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05-07-2014, 04:30 PM
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#8
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Established Member
Join Date: Oct 2010
Location: Oblong
Posts: 15
M.O.C. #10867
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Thank guys, I knew you all would come through. Never thought about the T sat going bad. I have one on order now. Thanks for all the comments
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05-21-2014, 02:32 PM
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#9
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Established Member
Join Date: Oct 2010
Location: Oblong
Posts: 15
M.O.C. #10867
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Okay water heater still not working, So far I have installed a new heating element, new T stat, new switch located on heater and a new relay, so what's left...... new control board? works fine on gas.
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05-21-2014, 03:48 PM
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#10
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Montana Master
Join Date: Jan 2006
Location: South
Posts: 2,499
M.O.C. #5140
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Do you have 120 volts at the switch on the water heater? Is that same switch in the "on" position?
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05-21-2014, 03:49 PM
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#11
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Montana Fan
Join Date: Aug 2012
Location: Blackduck
Posts: 315
M.O.C. #12753
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Testing with a multimeter if you haven't done so already. Could be that one of the new parts is faulty also.
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05-21-2014, 03:55 PM
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#12
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,702
M.O.C. #12947
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If it isn't a bad part, the only other likely problem is a bad connection, maybe behind the heater, or elsewhere that is burnt. Just have to start at the breaker and work your way to the water heater. Just be careful poking around with live electric, as that's the only way to trace it down.
__________________
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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05-22-2014, 02:55 AM
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#13
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Established Member
Join Date: Oct 2010
Location: Oblong
Posts: 15
M.O.C. #10867
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I have 120 volts to relay mounted on top of water heater, I have 12 volts to switch mounted in lower left hand corner on water heater.
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05-22-2014, 10:07 AM
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#14
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Montana Master
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
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And so, if you put your meter on one connection of the 120vac element, you should have 120 vac there and the other connection is the neutral/ground connection. IF there is 120vac to one side of the electric element, then the element has to heat up UNLESS the ground connection is not really ground...ie, open OR the element is bad or was burnt up by turning on the electric without the hot water tank filled with water. IF 120vac is not read at one connection of the element, then the T-stat is not allowing the 120vac to get to the element for one reason or another. Could be wiring burnt, bad connection, the control box on top of the water heater has a wire off or has gone bad. John
__________________
2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
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