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7 181 465 347 (05.01)
43
Rectifying faults
Error Fd
4.5.2
Programmer faults
Set room temperature not reached (TR 2)
Check
Action
1.
Thermostatic valve(s) set too low?
yes:
B
Turn up thermostatic valve(s).
↓
2.
no:
↓
2.
2.
CH flow temperature control on
boiler set too low?
yes:
B
Turn up CH flow temperature control.
no:
↓
3.
3.
Air in the heating system.
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.
Set room temperature not reached (integrated text display)
Check
Action
1.
Thermostatic valve(s) set too low?
yes:
B
Turn up thermostatic valve(s).
↓
2.
no:
↓
2.
2.
Heating characteristic set too low?
yes:
B
Correct heating characteristic.
↓
3.
no:
↓
3.
3.
CH flow temperature control on
boiler set too low?
yes:
B
Turn up CH flow temperature control.
↓
4.
no:
↓
4.
