What does the Remeha Green zone; end of green zone fault code mean?

Your boiler is struggling to keep its main burner flame lit, which means it cannot heat the water reliably and will likely shut down.

How much does it cost to fix Remeha error code Green zone; end of green zone?

Typical repair cost for the Remeha Green zone; end of green zone fault is £150-450 including labour.

failing or unstable flame of main burner

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

Lockout fault with a reset-needed pattern.

Older boilers — thermocouple, draught, gas supply.

7 signs repair isn't worth it anymore.