FAULT FINDING
This table gives information on basic operating system problems.
In the unlikely event of a boiler fault please read the following page thoroughly before contacting Worcester, Bosch Group.
Problem | Cause | Remedy |
|
|
|
Desired room | Thermostatic radiator | Increase thermostatic |
temperature is not | valve(s) set too low | radiator valve setting(s) |
reached |
|
|
|
|
|
| Temperature control for | Increase CH flow |
| CH flow on boiler set too | temperature control |
| low | setting |
|
|
|
| Air trapped in heating | Bleed radiators and |
| system | recharge heating system |
|
|
|
Desired room | Radiators are too hot | Turn down thermostatic |
temperature exceeded by |
| radiator valves / room |
large amount |
| thermostat |
|
| Reduce central heating |
|
| temperature on boiler |
|
|
|
Heating stays on for too | Clock is incorrectly set | Check setting |
long |
|
|
|
|
|
No on/off indicator | Momentary power failure | Switch off boiler at |
|
| master switch, wait a few |
|
| seconds then switch on |
|
| again |
|
|
|
Hot water temperature | Temperature set too low | Check setting |
too low | Programmer setting | Check setting |
| ||
| Water flow at tap too high | Reduce flow rate at tap |
|
|
|
Hot water temperature | Temperature set too high | Check setting |
too high |
|
|
|
|
|
MAINTENANCE
WORCESTER BOSCH GREENSTAR 25Si/30Si 8 716 115 169b (09/2008)
FAULT FINDING
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