Low
270 on Worcester Bosch Greenstar CDi Compact

Your boiler is currently resetting or performing its initial startup sequence, which typically happens when power is first restored after a shutdown.

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

Power up mode

Engineer required

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

Find a Gas Safe engineer
Search the official register →

Related guides you might find useful