Panasonic
Electrical Short / Ground Fault
Water heater trips the circuit breaker or RCD when starting or during operation.
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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
Water ingress on PCB, Shorted fan motor, Damaged wiring insulation, Faulty internal power supply
How to Fix / Troubleshooting
Shock and fire hazard: Do not repeatedly reset a tripping breaker. Turn OFF power and have the unit inspected.
- 1. Visual inspection (qualified persons):
- Remove the front cover.
- Look for signs of water leaks, burnt components, or damaged wiring.
- 2. Dry any moisture:
- If minor condensation is present, dry the area and correct the source of moisture.
- 3. Isolate components:
- A technician can disconnect fan, pump, or other loads to identify the shorted component.
- 4. Replace faulty parts: Replace any shorted motors, wiring, or PCB as identified by testing.
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Repair Difficulty
Professional Required
5/5
Required Part
Wiring Harness or Main Control PCB
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