High
Lights: Flash Off On on Potterton Promax HE Store

Your boiler has detected that it is getting too hot and has automatically shut down for safety reasons to prevent internal damage.

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

Overheat Lockout. Go to Overheat Lockout section of the fault finding instructions.

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.

Find a Gas Safe engineer
Search the official register →

Related fault codes

E119View →E160View →

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