Low
27 on Sime Murelle EV HE System

Your boiler's electronic control system is incorrectly set up to communicate with solar thermal panels that are not currently part of your heating arrangement.

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

SOLAR APPLICATION CONFIGURATION

From this model's manual
Verified against the Sime Murelle Ev He Combi installation & service manual, page 32.
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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