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Old 01-08-2019, 07:49 PM   #1
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Dsi fault

Hello all,

Quick back story: we have been leaving our water heater on because somebody told me to leave it on during cold weather to prevent it from freezing. (Electric mode) Hindsight, I should prolly turn it back off during warmer days. Today the DSI fault light came on. We have tried just turning it off and on but little light still comes on. Also checked power panel and nothing was tripped. Even disconnected from power but still nothing. AND we still have hot water?! Is it because the unit is too corroded or contaminated? Thanks everyone!

Eli
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Old 01-09-2019, 05:46 PM   #2
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I believe the DSI fault deals with the propane side of the hot water heater, not the electric. Make sure you have propane and it is turned on.
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Old 01-09-2019, 05:49 PM   #3
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Also, make sure the hot water tank doesn't go empty if you are running the electric element. It will burn out the heating element.
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Old 01-09-2019, 05:58 PM   #4
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Yeah well we have only been using electric for the water heater. Tank did not run out either. There must be a short somewhere because today the DSI fault light went on, off, on, off. We still have hot water, but I dont want the place to burn down. Lol I will have to take a closer look at the wiring this weekend, thanks!!
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Old 01-10-2019, 04:00 PM   #5
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The DSI fault "only" means there is LP gas ignition fault. If you have the LP gas function turned on, then it will try and light the gas burner. If it will not light, (this happens for a variety of reasons) then the DSI light will come on. Resetting the fault by turning the LP gas switch off and then on will only reset the fault sensing system and not the physical reason why it faulted. It will then if the LP gas switch is on, try and light again. If the system has a real fault, the the DSI light will come on again and again until the fault issue is solved after it was reset.

The DSI fault has is not part of the "electric" side of the water heater. If you have the electric portion turned on, then the electric will heat the water even if a DSI fault is active.

There is something not totally adding up to the advice given to you to leave the water heater turned on all the time. We need more background on how you are using the camper to tell if that is good advice or not. Leaving the water heater on "all" the time for days and weeks on end will in time create other issues. And a DSI fault is not one of the issues. Tell us how some of this all came about and we can try and help better.

Also tell us what year camper you have and ideally the model number of the water heater. They changed how they work over the years pending year/model.

Hope this helps

John
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