Emergency
ALL 08 on Sime Murelle HE 35 R

Your boiler has detected a flame inside when it should be turned off, so it has safely shut itself down.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

What the manual says

Manufacturer manual

If the flame control section recognises the presence of flames also in phases when they should not be present... the boiler will stop and the display will show error ALL 08.

From this model's manual
Verified against the Sime/Sime Murelle He Regular 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 is a emergency severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

ALL 02View →ALL 04View →ALL 06View →

All 36 fault codes on the Murelle HE 35 R

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

ALARM 70ALARM 71ALL 02ALL 05ALL 06ALL 07ALL 09ALL 13ALL 14ALL 15ALL 21ALL 22ALL 23ALL 24ALL 25ALL 26ALL 27ALL 28ALL 29ALL 30ALL 31ALL 32ALL 33ALL 34ALL 35E0E1E2E3E4E5E6E7E8E9

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