Giant
Total Power Loss / Dual Element Non‑Operation
No hot water, electric Giant water heater – tank full but water remains 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
Tripped breaker, Loose electrical connections at junction box, Tripped upper thermostat/ECO, Open upper heating element
How to Fix / Troubleshooting
Safety first: Turn off the breaker and verify power is off with a non‑contact tester before opening any covers.
- Check breaker: Inspect the main panel and reset the dedicated double‑pole breaker for the Giant heater. If it trips again, do not force it—call an electrician.
- Inspect junction box: Remove the top wiring compartment cover on the heater. Verify wire nuts are tight and no signs of overheating are present.
- Reset ECO: Remove the upper access panel and press the red reset button on the thermostat.
- Test upper element: With power off, test the upper element for continuity. Replace the Giant upper element if open.
- Restore power and test: After reassembly, restore power and allow several hours for full heat. If still cold, further thermostat or control diagnosis is required.
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Repair Difficulty
Medium
3/5
Required Part
Giant Upper Heating Element
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