Low
202 on Worcester Bosch Greenstar 12i System

Your boiler is taking a short, scheduled break to prevent unnecessary wear and tear on its internal parts, and it will resume heating automatically within a few minutes.

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

Anti rapid cycle mode. The boiler has commenced anti-cycle period for CH. Can be adjusted in boiler settings (2.3b). Default 5 Minutes

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 fault codes

201View →203View →

Related guides you might find useful

Is boiler cover worth it?

Break-even maths on monthly cover.

Read →

When to replace your boiler

7 signs repair isn't worth it anymore.

Read →

New boiler cost 2026

Realistic UK prices for a swap.

Read →