High
HIGH on Atag A200

Your boiler has too much water inside it, causing the pressure to rise to an unsafe level that has shut the system down.

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

Water pressure is to high (>2,8 bar), if indication remains continuously visible, the boiler is taken out of operation. The installation pressure needs to be decreased by draining water.

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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