Low
ER 08 on Johnson Starley Warmcair DW

Your boiler's outdoor sensor, which helps it adjust your heating based on the weather, is sending an incorrect or missing signal.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

OTC (outside temperature control) out of range

From this model's manual
Verified against the Johnson Starley Warmcair Dw installation & service manual, page 33.
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

ER 07View →ER 09View →

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