Remeha Green zone; end of green zone Fault Code
Also written as GREENZONEENDOFGREENZONE — same fault.
The Remeha Green zone; end of green zone fault code means: your boiler is struggling to light or keep its main flame burning steadily, which is preventing it from heating properly.. It appears on 3 Remeha models in our database.
Technical description: failing or unstable flame of main burner
What causes the Remeha Green zone; end of green zone fault?
This fault occurs when the boiler's control system cannot detect a steady flame after trying to ignite the gas. The most common reasons are a worn-out sensing probe that can no longer see the flame, or a faulty gas valve that isn't providing the correct amount of fuel to keep the burner lit safely.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Remeha models that show the Green zone; end of green zone fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha Green zone; end of green zone fault code information on this page is sourced and cross-checked against the official Remeha service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026