High
80 on Firebird Envirogreen

Your boiler's internal control panel has lost communication with the main system, meaning the boiler has stopped working because it no longer knows how or when to heat your home.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

What the manual says

Manufacturer manual

Unit controller - H-link - RCS transmission error (if no H-LINK, RCS has no power) - No H-link communication for a continuous period of 1 minute between Indoor and Unit controller User control by connection wiring (breaking, wiring error, etc.)

From this model's manual
Verified against the Firebird Envirogreen installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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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