INSTALLATION
Troubleshooting
24 |WPL ICS classic | WPL IKCS classic www.stiebel-eltron.com
17.1 Control elements on the IWS
If the fault cannot be identified using the WPM, the IWS will help
you to troubleshoot.
BA
D0000063997
1
2
3
4
1 Reset button
2 DIP switch (WP-Typ)
3 DIP switch (BA)
4 LEDs
17.1.1 DIP switch
DIP switch (WP-Typ)
The DIP switch (WP-Typ) on the IWS serves to set the relevant
heat pump type.
Factory setting
Compressor mode with electric emergency/booster heater
WP - Typ
ON
1 2 3 4
D0000057054
Check whether the DIP switch is set correctly.
Compressor mode with an external second heat generator
!
Material losses
For operation with a second external heat genera-
tor, do not connect the electric emergency/booster
heater.
If the appliance is operated in dual mode with a second external
heat generator, set the DIP switches as follows.
WP - Typ
ON
1 2 3 4
D0000057055
DIP switch (BA)
Factory setting
BA
ON
1 2 3 4
D0000051579
17.1.2 Light emitting diodes (LEDs)
BA
D0000063997
1
2
1 Reset button
2 LEDs
The following table shows the meaning of the LEDs on the IWS.
LED indicator Meaning
Red LED flashes
Single fault. The appliance shuts down. The appli-
ance restarts after 10 minutes. The LED extinguish-
es.
Red LED illuminates
Multiple faults have occurred. The appliance shuts
down. The appliance only restarts following a reset
on the IWS. This also resets the internal fault coun-
ter. The appliance can be restarted after 10min-
utes. The LED extinguishes.
Green LED (centre)
flashes
The heat pump is initialising.
Green LED (centre) illu-
minates
The heat pump was initialised successfully and the
connection with the WPM is active.
Faults indicated by the red LED:
- High pressure fault
- Low pressure fault
- Central fault
- Hardware fault on the IWS (see fault list in the heat pump
manager commissioning instructions)
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