Medium
ALARM 71 on Sime Murelle HE 35 R

One of the internal modules within your boiler has detected a fault, while the rest of the system continues to try to operate.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

When an anomaly occurs in one of the modules and the others keep operating

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 fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

ALARM 70View →ALARM 72View →

All 36 fault codes on the Murelle HE 35 R

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

ALARM 70ALL 02ALL 05ALL 06ALL 07ALL 08ALL 09ALL 13ALL 14ALL 15ALL 21ALL 22ALL 23ALL 24ALL 25ALL 26ALL 27ALL 28ALL 29ALL 30ALL 31ALL 32ALL 33ALL 34ALL 35E0E1E2E3E4E5E6E7E8E9

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