47 Low
Your boiler is still working but cannot reach its full power, meaning your radiators might not get as hot as they should.
Technical description: Reduced burner output
Typical repair cost: £100-£250 (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 47 — no call-out fees, no surprises.
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Parts commonly replaced
- Main PCB
- Gas Valve
- Flame Sensing Electrode
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