High
Lights On On Flash on Potterton Promax 15/2 HE Plus

Your boiler's internal computer has developed a fault and is failing to communicate with the rest of the unit, meaning it will not operate until repaired.

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

PCB Fault. Replace PCB.

From this model's manual
Verified against the Potterton/Potterton Promax 15 2 He Plus 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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Related fault codes

E119View →E160View →

All 24 fault codes on the Promax 15/2 HE Plus

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

E06FAN LOCKOUTFlash Flash OnFlash Off FlashFlash Off OnFlash On FlashFlash On OnLights Flash Flash OnLights Flash Off FlashLights Flash Off OnLights Flash On FlashLights Flash On OnLights Off Off OffLights On Flash FlashLights On Off FlashOn Flash FlashOn Flash OnOn Off FlashOn Off OnOn On FlashOn On OnOVERHEAT LOCKOUTTHERMISTOR

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