Low
53 on Worcester Bosch Greenstar 28CDi Compact ErP

Your boiler has temporarily paused to protect itself because it has been running almost continuously without a break for the past 24 hours.

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

Burn temporarily blocked due to no 20 minute continuous OFF time in last 24 hours.

From this model's manual
Verified against the Worcester Bosch/Worcester Bosch Greenstar Cdi Compact 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.

DIY fix possible

Turn your heating off completely using your room thermostat or boiler controls.Leave the boiler switched off for at least 20 minutes to let it cool and reset its cycle timer.Turn the heating back on and consider lowering your thermostat settings so the boiler gets natural rest periods.

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Related fault codes

All 100 fault codes on the Greenstar 28CDi Compact ErP

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