Group 1 Fault Codes - Worcester 27Ri Compact Installation, Commissioning And Servicing Instructions

FAULT FINDING AND DIAGNOSIS

7.1.1 GROUP 1 FAULT CODES

Flash
sequence Type of fault
Light OFF
Light ON
Group 1
Flashing codes
1 Locking
2 Locking
3 Locking
4 Locking
5 Locking
1 5 seconds off
2 5 seconds off
3
5 seconds off
4 5 seconds off
5
5 seconds off
Fig. 105 Group 1 flash sequences
48
Fault
No fault
No ionisation detection after ignition
Loss of ionisation signal during operation
Gas valve error
First safety timing error/ignition timing error
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
Fault code group 1
5 seconds off
5 seconds off
5 seconds off
Possible solutions/check
No boiler demand - boiler is OK
Heating demand on boiler- boiler is OK
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.
An established flame has been extinguished.
Reset the boiler by turning the control knob anti-
clockwise to the reset position.
Gas valve coil disconnected. Check gas valve.
Reset the boiler by turning the control knob anti-
clockwise to the reset position.
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.
Gas valve leaking.
False flame detected.
Reset the boiler by turning the control knob anti-
clockwise to the reset position.
1 to 5 flashes
5 seconds off
5 seconds off
6720646610-66.2Wo
Greenstar Ri Compact 6 720 646 610 (2013/12)