Low Warning
Fault 55 146 on Worcester Bosch Greenstar CDi Compact

Your boiler is trying to communicate with solar heating equipment that hasn't been set up yet or has had its settings lost.

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

Solar system is not yet in operation. Solar system not yet commissioned.

What causes this fault?

This fault occurs when the boiler's internal computer is searching for a connection to a solar thermal system that it cannot find. The root cause is typically a settings error where the boiler has been told it is part of a solar setup, but the actual solar components are either missing, not yet switched on, or have lost their configuration data.

Engineer required

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

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Related fault codes

B1View →224View →

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