2950 B High
Your boiler is trying to light itself but cannot detect a flame, meaning your heating and hot water will likely stop working.
Technical description: No flame signal. Following starting procedure the burner starts automatically. After cleaning set the correct gas / air ratio correctly
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 2950 B — no call-out fees, no surprises.
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Parts commonly replaced
- Flame sensing electrode
- Ignition lead
- Gas valve
- Spark electrode
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