Low
P.03 on Glow-worm Easicom3 System

Your boiler is currently operating normally and is simply displaying a status message to indicate it is running at its maximum heating power setting.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

The product runs in heating mode with the maximum heat input set using diagnostics code d.00.

From this model's manual
Verified against the Glow Worm Easicom3 System installation & service manual, page 37.
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 fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

P.00View →P.01View →P.02View →

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