Heat Store Fails To Heat Up - Worcester ZSBR 7-28 ICS1 Service Booklet

Rectifying faults

Heat store fails to heat up

Check
1. with TR 2:
CH flow temperature control on
boiler set too low.
2. Hot water temperature control on
boiler set too low
44
Action
B Increase CH flow temperature control setting.
B Increase hot water temperature control setting.
7 181 465 347 (01.07)