E 10 High
Your boiler has detected a fault with an auxiliary temperature sensor, which means the system cannot accurately monitor the heat levels in certain parts of the unit.
Technical description: AUX output sensor error
Typical repair cost: £90-180 (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 E 10 — no call-out fees, no surprises.
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Parts commonly replaced
- AUX temperature sensor
- Wiring harness
- Main PCB
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