Low
ER 08 + SPANNER on Johnson Starley Warmcair DW

Your boiler's outdoor weather sensor is reporting an incorrect temperature, which may cause your heating to respond inefficiently to the weather outside.

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.

Technical description

OTC (outside temperature control) out of range

Engineer required

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

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