Low
1037 W on Worcester Bosch Greenstar 2000

Your boiler has lost connection with its outdoor temperature sensor, so it is running at a constant safe temperature to keep your home warm while it waits for a fix.

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

Outside temp. sensor faulty - heating back-up operation active

Engineer required

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

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Related fault codes

2915View →

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