Red blinking light High
Your boiler's safety sensor thinks there is a fire inside before it has even started, causing the system to shut down for safety.
Technical description: Presence of a false flame signal before heat request
Typical repair cost: £120-280 (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 Red blinking light — no call-out fees, no surprises.
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Parts commonly replaced
- Photocell (Flame sensor)
- Oil pump solenoid
- Burner control box
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