Low
.0 on Worcester Bosch Greenstar 25i (ZWB 7-25)

This code is not an active error, but rather a menu command used to look up the history of past boiler faults.

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

Call up the last fault stored by the Bosch Heatronic, Service Function .0

From this model's manual
Verified against the Worcester Bosch Greenstar 25i Zwb 7 25 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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