E41 High
Your boiler's main control panel is having trouble talking to the internal computer, which is preventing the system from starting up.
Technical description: Communication error between fascia and control box – check cables
Typical repair cost: £120-350 (including labour)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Protect yourself from future repair bills
A boiler cover plan would cover faults like E41 — no call-out fees, no surprises.
*Affiliate links — we may earn a commission at no extra cost to you. Prices shown are starting prices.
Parts commonly replaced
- Wiring harness
- Display fascia
- Main PCB
*Affiliate links — we may earn a commission at no extra cost to you.