Fault Finding - Worcester Greenstar Danesmoor External Regular User Instructions

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Fault finding

In the event that the appliance stops functioning or does not perform as expected, you can carry out a few simple checks. These
checks are some of the most common causes and are listed in the table below. Should the problem persist, then it will be necessary
to contact Worcester, Bosch Group.
Problem Cause
Desired room Thermostatic radiator valve(s) set too low
temperature is not
Temperature control for central heating flow on
reached
boiler set too low
Low temperature setting on the room thermostat
Air trapped in heating system (System model)
Low system water pressure (System model)
Desired room Thermostatic radiator valve(s) are set too high
temperature is too
high
Room thermostat is set too high
Heating stays on for Clock is incorrectly set
too long
Hot water Temperature set too low on cylinder thermostat
temperature too low control.
Air trapped in heating system (System model)
Low system water pressure (System model)
Hot water Temperature set too high on cylinder thermostat
temperature too high control.
System pressure low Leak within the heating system
Table 2 Fault finding
Greenstar Danesmoor External & External System – 6 721 844 015 (2022/01)
2022+ 2022+
Remedy
▶ Increase thermostatic radiator valve setting(s).
▶ Increase central heating flow temperature
control setting
▶ Increase settings on room thermostat
▶ Bleed radiators and re-pressurise the heating
system
▶ Re-pressurise the system, refer to page 8
▶ Turn down thermostatic radiator valves/room
thermostat
▶ Reduce the thermostat setting
▶ Reduce central heating temperature by turning
down the Central Heating control on boiler
▶ Check setting and adjust
▶ Check setting and adjust
▶ Bleed radiators and re-pressurise the heating
system
▶ Re-pressurise the system, refer to page 8
▶ Check setting and adjust
▶ Check system for obvious leaks.
Fault finding
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