John Wood
Overheating Electrical Component
John Wood water heater emits a burning or electrical smell near the control area
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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
Loose electrical connection causing arcing, Failing control board component, Overheated wiring due to overload, Debris on hot surfaces
How to Fix / Troubleshooting
Safety: Immediately turn off power at the breaker and, for gas models, turn gas control to OFF. Do not ignore burning smells.
- 1. Visual inspection: After cooling, remove access covers and look for discolored, melted, or burnt wiring and components.
- 2. Tighten connections: Check all screw terminals and wire nuts for tightness.
- 3. Replace damaged parts: Replace any burnt wiring, connectors, or control boards with OEM John Wood parts.
- 4. Clean area: Remove dust or debris that may have contacted hot surfaces.
- 5. Test under supervision: Restore power and monitor closely for any recurrence. If unsure, contact a qualified technician.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board and Wiring
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