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#1Flyboy

California

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Joined: 09/08/2005

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Posted: 02/01/23 10:00am

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….. Good morning all… Suburban SW6DEL not getting 110 Volts to the heater element. Rocker switch on control panel is sending out 12 Volts when turned on. Is there a relay switch somewhere between the rocker switch and the element? Suggestions appreciated…..TIA

fj12ryder

Platte City, MO

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Posted: 02/01/23 10:06am

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Have you physically checked that you're not getting 120V at the heater element, or assuming so because the element doesn't heat up?

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#1Flyboy

California

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Posted: 02/01/23 10:08am

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… tested with volt meter….Circuit breaker is ok… worked for a while yesterday…

enblethen

Moses Lake, WA

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Posted: 02/01/23 10:14am

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Some have two switches. one outside and one inside.
Make and model of water heater would help!

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BB_TX

McKinney, Texas

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Posted: 02/01/23 10:38am

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Past reported problems:
- tripped breaker
- bad or tripped thermostat/hi temp cutout
- little black switch on bottom left corner of WH off or bad
- bad relay (located in junction box on WH)
- loose/bad/burned wire connection in any of those areas.

Retired JSO

North Georgia Mountains

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Posted: 02/01/23 10:49am

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Look for an additional 120 volt switch on the water heater itself, suburban located on lower left looking in with outside panel removed. It’s hard to see because of its location behind gas valve.

#1Flyboy

California

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Posted: 02/01/23 11:03am

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Make & model are in my original post; outside lower left 2nd switch is on. Maybe 2nd switch is bad???

Grit dog

Black Diamond, WA

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Posted: 02/01/23 11:21am

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Intermittent suggests a short somewhere. Probably harder to find. But easier if it’s not working.

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BB_TX

McKinney, Texas

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Posted: 02/01/23 11:37am

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2nd switch is the inside 12 vdc switch that operates the relay at the water heater.

Voltmeter and understanding of the circuit (schematic available in the WH manual) will greatly help in quickly finding the problem.

If you are placing your meter leads across the two terminals on the heating element and not showing 120 vac, it could also actually be loss of neutral. Burned neutral wire in the J box has also been reported multiple times. Try putting one meter lead on the hot side of the element and the other meter lead on the metal frame of the water heater.