High
70°C neon flashing on Potterton Performa 24

Your boiler is failing to vent exhaust gases properly because it cannot confirm that the flue fan is working as it should, so it has shut down for safety.

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

Go to section ‘E’ - Air pressure switch proved fault.

From this model's manual
Verified against the Potterton Boilerperforma24ihe 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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All 44 fault codes on the Performa 24

Seeing a different code? Every code this model can display, in one place.

101112131415232425262728293030° neon flashing30°C neon flashing313240° neon flashing40°C neon flashing50° neon flashing50°C neon flashing60° neon flashing60°C neon flashing70° neon flashing80° neon flashing80°C neon flashingBurner Neon (Flashing)Burner OnBurner on neon NOT illuminatedFlame FailureNeon flashing (Generic)neon illuminatedNo neon illuminatedPower Neon (Flashing)Power OnPreheat control neon flashingPressure of 3 or greaterRed reset neon (lit)ResetReset Neon (Flashing)Safety thermostat activatedTemperature Control

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