Gosund
Overheating / Component Burnout
Thermostat plastic housing is discolored, warped, or has a burnt smell
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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
Shorted internal component, Incorrect wiring causing overvoltage, Installed on wall with hidden high‑voltage cable behind, Prolonged operation in high ambient temperature
How to Fix / Troubleshooting
Danger: Immediately turn off power to the HVAC system at the breaker. Do not continue using a thermostat that shows signs of burning.
- Step 1 – Remove thermostat:
- Carefully remove the thermostat from the wall plate and inspect the back and PCB for burn marks.
- Step 2 – Inspect wiring:
- Check for miswiring (e.g., high‑voltage wires mistakenly connected to thermostat terminals).
- Ensure only low‑voltage thermostat wires are present.
- Step 3 – Do not reuse damaged unit:
- Do not attempt to repair a burnt thermostat; replace it entirely.
- Step 4 – Have wiring inspected:
- Contact a qualified HVAC/electrical technician to inspect the wiring and ensure no high‑voltage hazards exist behind the wall.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control PCB and Housing (Replace Entire Thermostat)
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