Fault finding and diagnosis
Greenstar i System
ErP
- 6 720 806 945 (2015/07)
69
8.1.3
Factory Reset
To reset all settings on Boiler settings and Weather sensor settings back
to the factory defaults:
▶ Press the
and
buttons for approximately 8 seconds to
enter appliance menu function.
▶ Press the
button or the
button to reset all the menu
settings to the factory settings.
This is confirmed on the display with a tick and the word “Reset”.
after approximately 4 seconds the display returns to main screen.
8.1.4
Removing the optional integral diverter valve kit
If you remove the optional integral diverter valve kit and return the
appliance to its original state. A factory reset will need to be carried out
once all of the kit components have been removed.
This resets the appliance controls configuration it will not detect the
cylinder sensor and Worcester controls are still connected.
Pump error
A1
281
Pump stuck or running dry
▶ Check:
– Primary system water pressure.
– For air in the system.
– Circulation within heating system.
– Wiring and operation of the pump, replace if
necessary.
Temperature fault
E9
224
Flue or high limit thermostat activated
(safety circuit)
▶ Check:
– Flue & high limit thermostat harness and connector.
– Operation, replace if necessary.
– Circulation within heating system.
– Burner gasket for leakage of flue gasses, replace if
necessary.
– Heat exchanger for debris.
– Air-gas ratio.
Temperature fault
D4
341
Primary flow temperatures rising too fast
▶ Check:
– Primary system water pressure.
– For air in the system.
– Circulation within heating system.
– Wiring and operation of the pump and the respective
sensors, replace if necessary.
Display text
Fault
code
Cause
code
Description
Possible solution/check
Table 49
