Low
202 on Worcester Bosch 35 RSF

Your boiler is currently on standby because it has received a signal from your thermostat to start heating and is preparing to fire up.

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

The boiler is waiting – there was a heat demand from the on off or modulating control

From this model's manual
Verified against the Worcester Bosch 35 Rsf 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

Check that your room thermostat is set to the desired temperatureEnsure your heating programmer or timer is set to an 'ON' periodWait a few minutes for the boiler to complete its pre-ignition safety checks

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