Remeha
No power / dead appliance
Furnace 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 internal fuse, No mains supply to furnace, Faulty main on/off switch, Defective main control PCB
How to Fix / Troubleshooting
Safety first: Only qualified persons should work on mains electrical circuits. Isolate the circuit before opening the appliance.
- Check external supply: Verify that the circuit breaker or fused spur supplying the furnace is on and not tripped or blown.
- Test socket/spur: Use a known-good appliance or tester to confirm power at the socket or spur.
- Inspect internal fuse: With power isolated, remove the front cover and locate the internal fuse on the PCB. Replace only with the same type and rating if blown.
- Check main switch: Ensure the furnace's main power switch operates correctly and is not physically damaged.
- PCB replacement: If power is present and fuses are intact but the display remains dead, the main PCB is likely faulty and must be replaced.
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Repair Difficulty
Medium
3/5
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