Fault finding and diagnosis
Greenstar i System
ErP
- 6 720 806 945 (2015/07)
68
Internal error
b7
257
Control box or the HCM is defective.
▶ Check:
– HCM is inserted properly.
– Connections of the control box.
▶ Contact technical helpline.
Internal error
F0
258
Control box or the HCM is defective.
▶ Check:
– HCM is inserted properly.
– Connections of the control box.
▶ Contact technical helpline.
EH
258
Internal error
F1
259
Control box or the HCM is defective.
▶ Check:
– HCM is inserted properly.
– Connections of the control box.
▶ Contact technical helpline.
Internal error
F0
262
Control box or the HCM is defective.
▶ Check:
– HCM is inserted properly.
– Connections of the control box.
▶ Contact technical helpline.
Internal error
F1
263
Control box or the HCM is defective.
▶ Check:
– HCM is inserted properly.
– Connections of the control box.
▶ Contact technical helpline.
Internal error
F0
272
Control box or the HCM is defective.
▶ Check:
– HCM is inserted properly.
– Replace HCM if necessary.
– Connections of the control box.
▶ Replace control box if necessary.
Internal error
F0
280
Control box is defective.
▶ Check:
– HCM is inserted properly.
– Connections of the control box.
▶ Replace control box if necessary.
Internal error
F0
290
Control box is defective, (Analogue /
Digital converter reference error).
▶ Check:
– HCM is inserted properly.
– Connections of the burner control.
▶ Replace burner control if necessary.
Internal error
328
Internal error (Mains voltage / frequency
may be inconsistent)
▶ Check the voltage and frequency.
235
Incompatible HCM software version
Revised HCM software requires latest version of control
box to operate correctly
▶ Replace the control box with the latest software.
On the barcode label of the burner control the software
version is indicated.
356
Low mains voltage, (the voltage may be
interrupted or inconsistent).
▶ Check mains voltage.
360
HCM invalid
The inserted HCM does not correspond with the control
box. HCM must be within the same appliance type.
▶ Check the correct HCM is fitted.
– HCM identification number found in Technical data
table.
A8
361
HCM invalid
The inserted HCM does not correspond with the control
box or HMI type.
▶ Contact technical helpline.
363
Ionisation measuring fault
▶ Check earth harness’s and connections
356
Low mains voltage, (the voltage may be
interrupted or inconsistent).
▶ Check mains voltage.
CC
800
Outdoor sensor defect (available when
accessary outdoor sensor is connected)
▶ Check:
– Sensor harness and connector.
– Operation, replace if necessary.
Display text
Fault
code
Cause
code
Description
Possible solution/check
Table 49