Fondital Power Supply / Control Panel Fault

Boiler display is blank or intermittently turns off, but mains power is present

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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

Faulty main on/off switch on Fondital boiler, Loose internal power connector, Defective control panel PCB or display board, Internal fuse blown on main PCB

How to Fix / Troubleshooting

Safety: Isolate the boiler from the mains before any inspection. Only qualified personnel should open the casing.

User checks:

  • External switch: Ensure any external fused spur or wall switch is turned on and the fuse is intact.
  • Power indicator: Check if any LEDs on the boiler are lit. If all are off, there may be no power to the unit.

Technician actions:

  • Check mains voltage at the boiler's terminal block.
  • Inspect and replace internal fuses on the main PCB if blown (after identifying cause).
  • Test the Fondital control panel PCB and ribbon cable.
  • Replace the main control PCB or display board if defective.
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Repair Difficulty

Hard 4/5

Required Part

Control Panel PCB
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