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Old 10-03-2014, 09:17 AM   #1
Join Date: Feb 2013
Location: New Park, Pennsylvania
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DSI switch on Water Heater

Can anyone tell me what his switch does?

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Old 10-03-2014, 09:22 AM   #2
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Location: Northeast Louisiana
Posts: 16,481
Originally Posted by mje000 View Post
Can anyone tell me what his switch does?
If it's "on" the water heater as you indicated, it's probably the electric heating element switch and not the DSI. The DSI/propane switch is usually located inside the RV.

If you have the Suburban brand water heater, this detailed FAQ may help, especially between the DSI/propane and electric heating element options (if equipped):

Suburban's electric switch and much more

The Atwood water heaters work the same, except the electric heating element switch (if equipped) will be located inside the RV along with the separate propane/DSI switch... and not on the face of the water heater like the Suburban can be.

If you don't have one of the two aforementioned water heaters, let us know what you do have, and we might can offer better guidance.

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Old 10-04-2014, 03:10 PM   #3
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It is the switch for HWH 110 vac operation. I always switch mine off when not needed.
Hyper diaper 29HFS = 2015
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heater, water, water heater

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