BoilerTroubleshooting2026-02-26
Boiler Display Blank or No Power
A blank display points to power, a fuse, the PCB, or a tripped breaker.
When your boiler display is blank, it's a power or control-board issue.
Common causes
A tripped breaker, blown fuse, faulty power supply, or a failed PCB (circuit board) can leave the display dark.
What to do
Check the breaker and the boiler's fused spur; if power is present but the display stays blank, the PCB needs a technician.
Key takeaways
- Check the breaker and fused spur
- Confirm the boiler switch is on
- A blank display can be the PCB
- Don't open the boiler yourself
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