Nibe No Power / Control Panel Failure

Water heater does not start after a power outage; display is blank or unresponsive.

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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, blown internal fuse on Nibe control board, loose power connection, failed control panel or main board

How to Fix / Troubleshooting

Safety first: Only qualified persons should open electrical compartments. Always isolate power before removing covers.

  • Step 1 – Check external power:
    • Verify that the main breaker and any local isolator are ON.
    • Test the outlet or supply with another device if possible.
  • Step 2 – Inspect internal fuses:
    • With power off, remove the control panel cover and locate any internal fuses.
    • Replace blown fuses only with the exact type and rating specified by Nibe.
  • Step 3 – Check connectors:
    • Ensure the control panel ribbon cable and power connectors are firmly seated.

If the display remains dead with correct supply and fuses, the control panel or main board likely needs replacement by a Nibe technician.

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Repair Difficulty

Hard 4/5

Required Part

Main Control Board
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