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Old 11-30-2017, 08:58 AM   #1
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Where is the 12 volt relay for the water heater?

I have no AC at the water heater. Gas works properly. The switch is on and lit in the control panel inside the RV. Drawings indicate a 12 volt relay. Is it part of the power supply?
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Old 11-30-2017, 08:59 AM   #2
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Old 11-30-2017, 09:03 AM   #3
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Check to see if the wh is actually plugged into 110 outlet. Also check the breaker inside the electrical panel and the reset button on the wh itself.
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Old 11-30-2017, 09:14 AM   #4
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I have no AC at the water heater. Gas works properly. The switch is on and lit in the control panel inside the RV. Drawings indicate a 12 volt relay. Is it part of the power supply?
I don't believe it's part of the board.
All references I've read has mentioned this relay is usually located near the control panel switch, although I thought I read somewhere that someone found it behind the refer.

Here is one such link I saved a while back.
Read page 8.
Suburban Water Heater Troubleshooting
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Old 11-30-2017, 11:35 AM   #5
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Was working for 4 years. Need to find relay. Typical design for this junk. Guess Iíll start tearing things apart. I can see the AC heading toward the breaker panel but itís such a poor installation itís just a rats nest of wires. Wary of mixing things up and starting more problems.
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Old 11-30-2017, 11:40 AM   #6
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Was working for 4 years. Need to find relay. Typical design for this junk. Guess Iíll start tearing things apart. I can see the AC heading toward the breaker panel but itís such a poor installation itís just a rats nest of wires. Wary of mixing things up and starting more problems.
10 minutes with a multimeter will probably give you some good indications where to start.
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Old 11-30-2017, 11:44 AM   #7
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I know.. must physically locate the 12 volt relay
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Old 11-30-2017, 12:01 PM   #8
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I don't know what water heater you have but I would pull the electric element and check it for continuity before anything else.
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Old 11-30-2017, 01:04 PM   #9
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I know.. must physically locate the 12 volt relay
What is the exact make/model of your water heater and I can provide assistance?
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Old 11-30-2017, 01:07 PM   #10
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Trouble shooting with meter indicates 12 volt relay contacts are open. No AC coming into water heater.
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