E25
Bradford White Lower Thermostat / Sensor Fault

Bradford White electric or hybrid water heater shows E25; water may be lukewarm or cold.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Failed lower thermostat, Loose or burned lower element wiring, Open lower temperature sensor, Tripped ECO (if integrated)

How to Fix / Troubleshooting

Safety: Shut off power at the breaker and confirm no voltage is present before touching wiring.

Steps:

  • Access lower thermostat: Remove the lower access panel and insulation.
  • Inspect wiring: Tighten all connections to the lower thermostat and element. Replace any burned connectors.
  • Test thermostat: With a multimeter, check continuity through the thermostat when it is calling for heat. If open when it should be closed, replace the thermostat.
  • Check sensor (if separate): Measure resistance of the lower sensor and compare to Bradford White specs. Replace if out of range.

Note: If both upper and lower controls show errors, there may be a main control or wiring harness issue requiring professional diagnosis.

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Repair Difficulty

Medium 3/5

Required Part

Lower Thermostat / Sensor
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