FAULT FINDING AND DIAGNOSIS
Greenstar Ri Compact 6 720 646 610 (2013/12)
48
7.1.1 GROUP 1 FAULT CODES
Fig. 105 Group 1 flash sequences
Flash
sequence
Type of fault
Fault
Possible solutions/check
Light OFF
No fault
No boiler demand - boiler is OK
Light ON
Heating demand on boiler- boiler is OK
Group 1
Flashing codes
1
Locking
No ionisation detection after ignition
Failure of four ignition attempts, the boiler waits 30
seconds before another attempt is made.
Reset the boiler by turning the control knob anti-
clockwise to the reset position.
2
Locking
Loss of ionisation signal during operation
An established flame has been extinguished.
Reset the boiler by turning the control knob anti-
clockwise to the reset position.
3
Locking
Gas valve error
Gas valve coil disconnected. Check gas valve.
Reset the boiler by turning the control knob anti-
clockwise to the reset position.
4
Locking
First safety timing error/ignition timing error
The flame was not established during the first four
seconds of the ignition period.
Reset the boiler by turning the control knob anti-
clockwise to the reset position.
5
Locking
Ionisation detected after burner stopped
Gas valve EV2 leak test failed
Gas valve EV1 leak test failed
Ionisation current detected before burner-start
Gas valve error
Ionisation sensor shorted
Gas valve leaking.
False flame detected.
Reset the boiler by turning the control knob anti-
clockwise to the reset position.
6720646610-66.2Wo
Fault code group 1
1 to 5 flashes
5 seconds off
5 seconds off
5 seconds off
5 seconds off
5 seconds off
5 seconds off
5 seconds off
5 seconds off
5 seconds off
5 seconds off
1
2
3
4
5