What does the Atag FILL (flashing) fault code mean?

Your boiler has detected that the water pressure inside your heating system is too low, meaning it needs to be topped up with more water to work correctly.

How much does it cost to fix Atag error code FILL (flashing)?

Cost varies. Contact a Gas Safe registered engineer for a quote.

Can I fix Atag fault code FILL (flashing) myself?

Locate the external filling loop, which is usually a flexible silver braided hose connecting two pipes near the boiler.

Atag FILL (flashing) Fault Code: What It Means & How to Fix It

Technical description

Water pressure is to low (<1,0 bar), flashing FILL will be altered with indication of water pressure, boiler power of 50% is possible. The installation needs to be topped up.

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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Your boiler has detected that the water pressure inside your heating system is too low, meaning it needs to be topped up with more water to work correctly.

Technical description

Engineer required

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