Error Codes - Worcester Greenstar i System ErP Series Installation, Commissioning And Servicing Instructions

Fault finding and diagnosis
8.1.2

Error codes

Fault
Display text code
Electrical interruption fault Fd
Fan/Airflow fault C7
Fan/Airflow fault C6
Fan/Airflow fault C6
Fan/Airflow fault C7
Fan/Airflow fault C1
Fan/Airflow fault C4
Flow sensor fault E2
Flow sensor fault E2
Flow sensor fault E9
Flow sensor fault E2
Flow sensor fault E2
Table 49
66
Cause
code Description
226 Service tool has been connected
231 The power has been interrupted during a
lockout
214 Fan does not run during the start up phase ▶ Check:
215 Fan speed too high
216 Fan speed too low
217 Fan has stopped during appliance
operation
264 Fan stopped during operation
273 Continuous fan operation for the last 24
hours (appliance temporary blocked)
222 Flow temperature sensor shorted
223 Flow temperature sensor disconnected
276 Primary Flow temperature exceeded 95 °C ▶ Check:
350 Flow temperature sensor shorted
351 Flow temperature sensor disconnected
Possible solution/check
In the blocking error history menu it records if the service
tool has been connected
▶ Check locking error history:
– Lockout fault will always be last code before FD
code.
▶ Reset the appliance
– Fan harness and connector.
– 230 Vac across brown and blue wires.
– Fan operation, replace if necessary.
– Connections of the control box.
▶ Replace control box if necessary.
▶ Check:
– Fan harness and connector.
– Fan operation, replace if necessary.
– Connections of the control box.
▶ Replace control box if necessary.
▶ Check:
– Fan harness and connector.
– Fan operation, replace if necessary.
– Connections of the control box.
▶ Replace control box if necessary.
▶ Check:
– Fan harness and connector.
– 230 Vac across brown and blue wires.
– Fan operation, replace if necessary.
– Connections of the control box.
▶ Replace control box if necessary.
▶ Check:
– Fan harness and connector.
– 230 Vac across brown and blue wires.
– Operation, replace if necessary.
▶ Check if demand has been calling for the 24 hours.
Appliance has been blocked from firing for a minimum
of 2 minutes as it has been operated continuously for
24 hours.
▶ Check:
– Sensor harness and connector.
– Operation, replace if necessary.
▶ Check:
– Sensor harness and connector.
– Operation, replace if necessary.
– Primary system water pressure.
– For air in the system
– Circulation within heating system.
– Wiring and operation of the pump and flow
temperature sensor, replace part/s if necessary.
▶ Check:
– Sensor harness and connector.
– Operation, replace if necessary.
▶ Check:
– Sensor harness and connector.
– Operation, replace if necessary.
Greenstar i System
ErP
- 6 720 806 945 (2015/07)