Medium
Faulty sensor on Johnson Starley Aquair S 10

Your boiler's control panel has lost communication with a temperature sensor, which is preventing it from heating your home correctly.

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

PCB is not seeing sensor. Confirm by measuring sensor resistance. Replace sensor if resistance is greater then 28K.

From this model's manual
Verified against the Johnson Starley Aquair S 10 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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