Worcester bosch greenstar 37cdi combi heating issue

[ojb96]

Hi, i have a worcester bosch greenstar 37cdi and having trouble with the heating, hot water works fine.

When the room stat is turned up it calls for heat and boiler kicks, burner ignites and goes into syphon filling mode and the radiators begin to warm up (roughly 40°C on the display), once it finishes syphon filling mode and the call for heat is still on, the temperature on the display goes up to roughly 60°C and then the burner turns off and I get no heating

Tried it in 'chimney sweep' test mode, the radiators get very hot and then the same thing happens again

Thanks In advance for any help

 

[CountryFan]

Sounds like you need a gas safe registered engineer. Could be a few things and if they don't know may seek help from Worcester technical helpline l.