Medium
Block 86 on Atag E Range

Your boiler has detected that the electricity supply coming into your home is unstable or fluctuating outside of normal limits.

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

The frequence of the power supply deviates more than 2,5Hz (<47,5Hz, >52,5Hz)

From this model's manual
Verified against the Atag E Range 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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