Low
ALL 25 on Sime Murelle EV HE 25 Combi

Your boiler has detected a fault with the temperature sensor connected to your solar panel system.

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 S2 boiler probe failure. When the Insol board is connected to the boiler, if the S2 solar collector probe becomes open or short circuit.

From this model's manual
Verified against the Sime/Sime Murelle Ev He Combi installation & service 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 fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

ALL 24View →ALL 26View →

All 22 fault codes on the Murelle EV HE 25 Combi

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

ALL 02ALL 03ALL 04ALL 05ALL 06ALL 07ALL 08ALL 09ALL 14ALL 15ALL 20ALL 21ALL 22ALL 23ALL 24ALL 26ALL 27ALL 28ALL 29ERROR 10ERROR 13

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