Vokera Surge damage to thermostat electronics

Thermostat shows error or misbehaves after power surge or lightning storm

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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

Voltage spike on boiler supply affecting low-voltage output, Surge on communication lines, Inadequate surge protection, Direct lightning-induced transient

How to Fix / Troubleshooting

Safety first: If you suspect serious electrical damage, have the installation inspected by a qualified electrician or heating engineer.

  • Power cycle: Turn off power at the fused spur for several minutes, then restore and observe thermostat behaviour.
  • Check other devices: If other electronics in the home are also affected, a surge event is likely.
  • Factory reset: If the thermostat boots but behaves erratically, perform a factory reset and reconfigure.
  • Replace damaged units: If the thermostat remains faulty or dead, replace it. Consider adding surge protection to the boiler circuit.
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Repair Difficulty

Medium 3/5

Required Part

Vokera smart thermostat
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