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Old 08-10-2024, 01:26 PM   #1
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Water Heater Switch

My water heater switch stopped working (no toggle) so I opened up the panel and should have taken a picture of the wiring but didn't. I ordered a new switch and forgot the wiring pattern. It's only three post/clips but 6 connections are available. Any help with photo of your inside panel or ideas would help.
2015 Coachman Prism
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Old 08-10-2024, 01:49 PM   #2
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Are you talking about the 12V "DSI" circuit?
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Old 08-10-2024, 04:08 PM   #3
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2015 Prism hot water heater

See the attached photos.
I removed the switch and can't figure out the wiring pattern. 6 wire connections to 3 posts. I guess it's a standard wiring bundle when only 3 are needed. U
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Old 08-12-2024, 01:54 PM   #4
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Here's a diagram for a Suburban water heater:
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Old 08-12-2024, 03:22 PM   #5
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Check for 12v between the connector with the red wire and the black. If so, the black is used to light the switch. I would use those for the pos and neg to switch and a guess of one of the whites to water heater. Cross your fingers!
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Old 08-12-2024, 03:36 PM   #6
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Thanks, worth a try. If anyone with a 2015-ish Prism 24G is willing to remove 4 screws and pull their panel out and ltake a picture, it would be awesome. Please PM me with the pic.
Thank you
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Old 08-13-2024, 04:07 PM   #7
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OP, any luck on your switch dilemma?
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Old 08-13-2024, 05:24 PM   #8
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I was looking for a Prism 24G in the San Diego area.
I was hoping remove the 4 screws to the panel, pull it out and photograph it. If not, I'll try to read the electrical schematic. Plan C is to use a wire between poles to see which lights the burner.
Thanks everyone for the support.
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Old 08-13-2024, 05:46 PM   #9
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Do you have a volt/ohm meter?
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Old 08-13-2024, 06:09 PM   #10
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Yes
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Old 08-13-2024, 06:26 PM   #11
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Check the connector with the red wire to the black wire for 12 v dc.
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