Worcester Greenstar i System ErP Series User Manual

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

Worcester Greenstar i System ErP Series Specifications

General

Brand	Worcester
Model	Greenstar i System ErP Series
Category	Boiler
Language	English