High
Overheat on Firebird Popular Heatpac

Your boiler has become too hot and has automatically shut down for safety.

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

A boiler overheat condition arises; the burner will stop and remain inoperative until the manual reset overheat limit thermostat reset button is depressed.

Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s 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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All 4 fault codes on the Popular Heatpac

Seeing a different code? Every code this model can display, in one place.

lock-outLock-out lampRED light

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