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Old 03-15-2016, 02:12 PM   #1
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No hot water....again

I have a suburban water heater that does not work on 110v, again for the 3rd time. It has been to the shop twice, first time they found nothing wrong,water heater was working at service center. Get home water heater not working. Another trip back to shop, tech pulled heater and located bad wire, changed wire and water heater was working. It stopped working again, I changed element with no luck. I thought switch, changed switch, no luck. What else can I test to see why water heater is not working on 110v?
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Old 03-15-2016, 02:30 PM   #2
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I have the same issue, my water heater only works off of propane but not eletric. the shop replaced the element once and the actual tank the 2nd time and still same issue. I gave up on it for now. If I ran into the same issue again this summer, it'll be replaced again this year
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Old 03-15-2016, 02:34 PM   #3
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Have you checked to see if you have power to the element?
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Old 03-15-2016, 02:48 PM   #4
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Many units have TWO switches that need thrown for the 110v side to work.
Is yours like that?
Have you done any preliminary 110v tests at the element or thermostat?
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Old 03-15-2016, 02:50 PM   #5
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The wiring diagram is pretty simple on those units. Here's a link to the service manual.

Basically the hot wire runs from the breaker to the switch, then to the thermostat (with reset button), then to the element. The neutral (white) wire runs straight to the element.

Start by testing voltage at the various locations until you find the first one in line that has no power. The device before that will be the culprit.
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Old 03-15-2016, 02:58 PM   #6
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Quote:
Originally Posted by Kevin & Judy View Post
Have you checked to see if you have power to the element?
I did but I am not sure if I did it correctly. I cannot remember the reading I was getting on my meter. I should get 110 at the switch correct?
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Old 03-15-2016, 03:00 PM   #7
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Quote:
Originally Posted by 5picker View Post
Many units have TWO switches that need thrown for the 110v side to work.
Is yours like that?
Have you done any preliminary 110v tests at the element or thermostat?
I am not aware of another switch, the only one I found is on the heater itself.
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Old 03-15-2016, 03:08 PM   #8
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If you you had a second switch for the electric side it'd be right next to the propane on / off switch.


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Old 03-15-2016, 03:18 PM   #9
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Quote:
Originally Posted by Bama Rambler View Post
The wiring diagram is pretty simple on those units. Here's a link to the service manual.

Basically the hot wire runs from the breaker to the switch, then to the thermostat (with reset button), then to the element. The neutral (white) wire runs straight to the element.

Start by testing voltage at the various locations until you find the first one in line that has no power. The device before that will be the culprit.
Thanks, I will check from breaker to heater when I get home from work. If I remember I was getting 14v at the element last time I checked. I cant remember, I suffer from CRS.
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Old 03-15-2016, 03:23 PM   #10
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Thermostat re-set, I had the same problem, had to continually press the re-set.
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