Worcester GREENSTAR HE combi Series User Manual

7 181 465 347 (01.07)
Rectifying faults
21
Ad flashing.
Heat store NTC sensor 1 not detected
Check Action
1. Is lead for heat store NTC sensor
correctly routed, i.e. not through
cable clamp?
yes: ↓2.
no: B Route connecting lead for heat store tempera-
ture sensor as specified in installation instruc-
tions.
2. B Activate menu option
Show service parameters.
B Select
.3 Stor.tank temp.sensor1 .
Is a temperature between 0. and 5.
displayed?
yes: Connector on end of NTC sensor lead:
B Flue gas connector corroded
1)
, damaged or
dirty? Change relative parts.
B Press button .
Ad? ↓3.
1)
no: ↓4.
3. Heat store -NTC 1:
B Unplug connector from PCB con-
trol board.
B Short circuit the connector using
wire jumper.
After max. 60 sec:
Display changes to temperature
between 100. and 95.
yes: B Replace heat store NTC sensor 1.
no: B Power OFF the appliance.
B Disconnect the boiler electrical connection.
B Change PCB control board.
B Reconnect the boiler electrical connection.
B Turn ON the appliance.
4. Temperature between 95. and 100. is
displayed.
B Unplug the connector.
After max. 60 sec.:
Does the displayed code change
to a value between 0. and 5.?
yes: B Replace heat store NTC sensor 1.
no: B Power OFF the appliance.
B Disconnect the boiler electrical connection.
B Change PCB control board.
B Reconnect the boiler electrical connection.
B Turn ON the appliance.

Worcester GREENSTAR HE combi Series Specifications

General

Brand	Worcester
Model	GREENSTAR HE combi Series
Category	Boiler
Language	English