What does the Atag HIGH fault code mean?

Your boiler has detected that the water pressure in your heating system is too high and has shut itself down to prevent damage.

How much does it cost to fix Atag error code HIGH?

Typical repair cost for the Atag HIGH fault is £0-£90 including labour.

Can I fix Atag fault code HIGH myself?

Locate a radiator in your home, preferably one upstairs.

Atag HIGH Fault Code: What It Means & How to Fix It

Technical description

Water pressure is too 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.

Find a Gas Safe engineer

Search the official register →

Related guides you might find useful

Boiler keeps losing pressure

Six most common causes of dropping pressure.

Read →

When to replace your boiler

7 signs repair isn't worth it anymore.

Read →

Is boiler cover worth it?

Break-even maths on monthly cover.

Read →

Your boiler has detected that the water pressure in your heating system is too high and has shut itself down to prevent damage.

Technical description

Engineer required

Related guides you might find useful

Boiler keeps losing pressure

When to replace your boiler

Is boiler cover worth it?

Recently viewed