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:
↓
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?
↓
1)
no:
↓
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.
Summary of Contents for GREENSTAR HE combi Series
Page 174: ...7 181 465 347 01 07 50 Appendix...
Page 175: ...7 181 465 347 01 07 Appendix 51...
Page 176: ...Appendix...
