Bosch GREENSTAR CDI C13 - Manual (Page 19)

WORCESTER BOSCH GREENSTAR 25CDi/30CDi/35CDi/40CDi
6 720 611 928a (02/05)
19
FAULT FINDING
FAULT FINDING
This table gives information on basic
operating system problems.
In the unlikely event of a boiler fault
please read the following page tho-
roughly before contacting Worcester
Bosch.
Problem Cause Remedy
Desired room temperature
is not reached Thermostatic radiator
valve(s) set too low Increase thermostatic
radiator valve setting(s)
Temperature control for CH
flow on boiler set too low Increase CH flow tempera-
ture control setting
Air trapped in heating
system Bleed radiators and rechar-
ge heating system
Desired room temperature
exceeded by large amount Radiators are too hot Turn down thermostatic
radiator valves / room ther-
mostat
Reduce central heating
temperature on boiler
Heating stays on for too
long Clock is incorrectly set Check setting
No on/off indicator Momentary power failure Switch off appliance at
master switch, wait a few
seconds then switch on
again
Hot water temperature too
low Temperature set too low
Programmer setting
Water flow at tap too high
Check setting
Check setting
Reduce flow rate at tap
Hot water temperature too
high Temperature set too high Check setting
MAI
NTE
NAN
C
E
Greenstar CDi (Combi) User.qxd 17.02.2005 9:50 Uhr Seite 19