Klimosz
No Power / Dead Boiler
Boiler does not start 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 in Klimosz boiler, Tripped external breaker, Faulty main switch, Defective control PCB power supply
How to Fix / Troubleshooting
Safety: Only work on electrical components if you are competent. Isolate power first.
- Check external supply: Verify that the circuit breaker or fuse feeding the boiler is on and not tripped.
- Inspect boiler fuse: Open the electrical compartment and check the internal fuse(s). Replace only with the same type and rating specified by Klimosz.
- Test main switch: Ensure the boiler’s on/off switch operates correctly and is not loose or burnt.
- PCB diagnosis: If fuses and supply are good but the display remains dead, the control board’s power section may have failed and needs replacement.
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Repair Difficulty
Medium
3/5
Required Part
Internal Boiler Fuse
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