Atlantic
Ground Fault / Short Circuit in Heating Circuit
Atlantic water heater trips the circuit breaker or RCD (residual current device) when heating.
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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
Element insulation breakdown to earth, water ingress in element terminal area, damaged wiring insulation, faulty control board triac or relay shorted
How to Fix / Troubleshooting
Safety: Do not repeatedly reset a tripping breaker. Turn off power and lock out if possible.
- Remove the access cover and visually inspect for signs of water leaks around the element flange and wiring.
- With power OFF, disconnect the wires from the heating element and measure insulation resistance between each terminal and the metal flange using a megohmmeter. Low resistance indicates a faulty element that must be replaced.
- Inspect all wiring for burn marks or damaged insulation; repair or replace as needed.
- If the element and wiring are sound, the fault may be on the control board (shorted relay/triac). Replace the Atlantic control board if confirmed.
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Repair Difficulty
Hard
4/5
Required Part
Immersion Heating Element
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