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Old 07-02-2022, 06:22 PM   #1
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Water heater light not working

Okay so we bought a new Apex Nano 208bhs last year and I made a rookie mistake and plugged in the trailer while the heater was switched on before I added water. Of course this burnt out the element. I have since replaced the element and it is now heating. The only problem is the light on the switch panel does not turn on while on electric. The light does turn on when on propane. The light does not turn on when the electric switch is on and the heater is working.

I do know basics of using a volt meter but not sure how to test this. I pulled the switch panel and the wires look connected and nothing is burnt.

The hi temp fuse is not blown either. Like I said the only thing not working is the light inside the trailer.
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Old 07-02-2022, 06:36 PM   #2
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We have a Suburban water heater, so the only switch for it we have inside is for heating the water with propane. The red light next to the switch only comes on until the propane ignites. It will also come on and stay lit if there is a problem with the burner. When the propane is working correctly, the light is not lit.
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Old 07-02-2022, 06:40 PM   #3
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Yep, on a typical Suburban WH, the inside red light is only for the propane side.
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Old 07-02-2022, 07:04 PM   #4
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Originally Posted by Agustis88 View Post
Okay so we bought a new Apex Nano 208bhs last year and I made a rookie mistake and plugged in the trailer while the heater was switched on before I added water. Of course this burnt out the element. I have since replaced the element and it is now heating. The only problem is the light on the switch panel does not turn on while on electric. The light does turn on when on propane. The light does not turn on when the electric switch is on and the heater is working.

I do know basics of using a volt meter but not sure how to test this. I pulled the switch panel and the wires look connected and nothing is burnt.

The hi temp fuse is not blown either. Like I said the only thing not working is the light inside the trailer.

Please read this thread for an explanation on Suburbans switches and lights. It sounds like you are chasing a non existent problem.


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Old 07-02-2022, 09:50 PM   #5
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Well isn't that the easiest fix! I thought the light came on when it the electric WH was on, but I could have easily been mistaken.

Thanks everyone for the very fast replies.
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Old 07-02-2022, 09:54 PM   #6
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Well isn't that the easiest fix! I thought the light came on when it the electric WH was on, but I could have easily been mistaken.



Thanks everyone for the very fast replies.
Since you haven't identified which model number your WH is, do you have the black rocker switch on the water heater itself, for the electric side?
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Old 07-03-2022, 12:47 AM   #7
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Originally Posted by Agustis88 View Post
Well isn't that the easiest fix! I thought the light came on when it the electric WH was on, but I could have easily been mistaken.

Thanks everyone for the very fast replies.
The light in the electric inside switch is 12 volts DC. It only indicates the switch is on. It's part of the switch itself.
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