Programmer Faults; Set Room Temperature Not Reached (Tr 2); Set Room Temperature Not Reached - Worcester ZWBR 7-30 R 30 HE PLUS COMBI Service Booklet

4.5.2

Programmer faults

Set room temperature not reached (TR 2)

Check
1. Thermostatic valve(s) set too low?
2. CH flow temperature control on
boiler set too low?
3. Air in the heating system.
Set room temperature not reached (integrated text display)
Check
1. Thermostatic valve(s) set too low?
2. Heating characteristic set too low?
3. CH flow temperature control on
boiler set too low?
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Action
B Turn up thermostatic valve(s).
yes:
↓2.
↓2.
no:
B Turn up CH flow temperature control.
yes:
↓3.
no:
B Power OFF the appliance.
B Check appliance and system for water leaks and
repair as necessary.
B Top up system.
B Turn ON the appliance.
B Activate menu option Show service parame-
ters.
B Select 7.3 Air purge mode select setting on,
autom. deactivat. and confirm.
B Vent appliance.
B Vent radiators.
Action
B Turn up thermostatic valve(s).
yes:
↓2.
↓2.
no:
B Correct heating characteristic.
yes:
↓3.
↓3.
no:
B Turn up CH flow temperature control.
yes:
↓4.
↓4.
no:
Rectifying faults
Error Fd
43