Low
IPX5D on Main Eco Compact System

This code is not actually an error message, but an official label on your boiler casing indicating that the unit is built to withstand water splashes and humidity.

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

Degree of protection against humidity (EN 60529)

From this model's manual
Verified against the Main Eco Compact System installation & service manual, page 14.
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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