Gledhill Boiler Fault Codes

3 fault codes across 1 Gledhill boiler models — explained in plain English.

Gledhill hot-water and combination boilers.

Gledhill fault codes on this site

We document 3 fault codes across 1 Gledhill model, covering 3 distinct codes. Gledhill boilers use light sequences and status descriptions rather than numbered codes. Codes for 1 of these models are taken directly from the manufacturer's own service or installation manual. Gledhill is a smaller name in the UK market, and if you own one this is likely one of the few places its fault codes are collected in one place.

Models covered: GB35C.

Codes that appear on the most Gledhill models:

FLASHING P FLASHING F Flashing dot D2

Most serious

High-severity Gledhill fault codes

FLASHING P

Your boiler has detected that the water pressure is too low, causing it to stop running to protect the system.

GB35C

Flashing dot D2

Your boiler has detected a general ignition or operational failure and has locked itself out for safety.

GB35C

All models

1 Gledhill boiler models

GB35C

Combi Discontinued

3 fault codes · 2006 onwards

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