D.10 High
Your boiler's internal pump, which moves water through your radiators, has encountered an electrical or mechanical fault and cannot circulate heat.
Technical description: Status internal heating pump error
Typical repair cost: £220-£450 (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 D.10 — 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
- Internal circulation pump
- Pump cable harness
- Main PCB
*Affiliate links — we may earn a commission at no extra cost to you.