What does the Atag C1 33 fault code mean?

Your boiler has tried to light several times but has failed to produce a flame, meaning your heating and hot water will not work.

How much does it cost to fix Atag error code C1 33?

Typical repair cost for the Atag C1 33 fault is £120-350 including labour.

Check if other gas appliances, like a cooker, are working to ensure gas supply

No flame after 5 ignition attempts

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Almost always a stuck diverter valve on combis.

Lockout fault with a reset-needed pattern.

Older boilers — thermocouple, draught, gas supply.