High Lockout
E130 on Potterton Promax Combi HE Plus

Your boiler has shut down because a sensor has detected that the exhaust gases are getting too hot, which is a safety measure to prevent 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

Flue NTC Operated

What causes this fault?

This fault occurs when a safety sensor detects that the gases leaving your boiler's chimney are reaching dangerously high temperatures. The most common cause is a buildup of debris or limescale inside the heat exchanger, which prevents heat from being transferred to your water and instead sends it out through the flue. It can also be triggered by a faulty sensor sending an incorrect reading to the boiler's computer.

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

E110View →

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