High
COMBUSTION FAN FAULT on Johnson Starley Warmcair DW

Your heater has stopped working because the fan that safely clears exhaust gases is not spinning or receiving power.

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.

What the manual says

Manufacturer manual

Issues with fan wiring, connections, continuity, or 230V supply to the fan. Potential PCB or Fan replacement required.

From this model's manual
Verified against the Johnson Starley Warmcair Dw installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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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