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Wireman · Appliances troubleshooting · 2023 NEC ·

Appliances

Water heaters, dryers, ranges, pumps, openers.

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Electric water heater not heatingPower, the high-limit reset, then each element and thermostat.Up to 4 steps Electric dryer runs but no heatBoth 240 V legs, the thermal fuse and high limit, then the element.Up to 4 steps Range or oven element not heatingPower to the range, then the element, its switch or relay, and the burner receptacle.Up to 3 steps Dishwasher or disposal won’t runThe disposal’s reset and jam, GFCI and breakers, then power at the outlet or box.Up to 4 steps Well pump not runningPressure switch, 2-wire or 3-wire control box, running amps, then the motor and drop cable.Up to 6 steps Sump pump not runningTest it with water, check the GFCI and outlet, then bypass the float switch briefly.Up to 3 steps Garage door opener won’t closeSafety sensor alignment and wiring, then power and the opener’s force and limits.Up to 4 steps Baseboard or wall heater not workingBreaker and both legs, voltage at the heater, the line-voltage thermostat, then the element and limit.Up to 4 steps Tankless water heater trips or no heatFlow detection, every breaker and element circuit, then elements and connections.Up to 5 steps