Vokera No Power to Appliance

Water heater does not power on at all, display is blank

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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

Blown fuse, Tripped circuit breaker, Faulty external spur, Failed main PCB, Loose mains connection

How to Fix / Troubleshooting

Safety first: Do not open the appliance casing unless you are competent with electrical safety. Risk of electric shock.

User checks:

  • Verify that the main consumer unit breaker for the heater circuit is on.
  • Check the fused spur (if fitted) and replace the fuse with the correct rating if blown.
  • Ensure the on/off switch on the heater (if present) is in the ON position.

Engineer actions:

  • Test for mains voltage at the appliance terminals.
  • Inspect and tighten mains connections inside the heater.
  • Check internal fuses on the PCB and replace the board if necessary.

If fuses blow repeatedly, a short-circuit must be located and repaired by a professional.

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Repair Difficulty

Medium 3/5

Required Part

Main Control PCB
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