Medium
OTER on Vokera Vision Plus 35C/40C

Your boiler is having a communication breakdown with its external thermostat or smart control system, meaning it doesn't know when to turn on or off.

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

OTBus configuration fault

From this model's manual
Verified against the Vokera Vision Plus 35c 40c installation & service manual, page 8.
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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