High
2948 B on Worcester Bosch Greenstar 2000

Your boiler is struggling to stay lit when running at a low power level, which is preventing it from providing steady heating or hot water.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

No flame signal with low output

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

2947View →2949View →EAView →

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