Worcester GREENSTAR UTILITY

USER INSTRUCTIONS & CUSTOMER CARE GUIDE
MAINTENANCE
FAULT FINDING
8-716-106-257a (08.05)
FAULT FINDING
14
Desired room temperature
is not reached
Thermostatic radiator
valve(s) set too low
Increase thermostatic radiator
valve setting(s)
Room thermostat set too low Increase room thermostat setting
Temperature control on
boiler set too low
Increase temperature control
setting
Air trapped in heating
system
Bleed radiators and recharge
heating system
Desired room temperature
exceeded by large amount
Radiators are too hot Turn down thermostatic radiator
valves / room thermostat / boiler
temperature control setting
Temperature rises instead
of falling
Clock is incorrectly set Check setting
Hot water temperature too
low
Hot water temperature set
too low
Check setting of cylinder
thermostat then boiler
temperature control setting
Tank cold Check programmer timings
PROBLEM CAUSE REMEDY