23
If, in an emergency, a fault cannot
be located using the WPM II, open
the control panel and check the IWS
settings. These checks must only be carried
out by a qualified contractor:
Slide switches (WP-Typ)
You can choose various compressor systems
with the Slide switches (WP-Typ). This was set
at the factory, subject to the heat pump type,
for the WPL 10 A/I/IK to 1.
1 Single compressor with internal HS 2
(DHC)
If the WPL is to be operated in dual-mode
together with a second heat source other
than the DHC, or alternatively as module with
another WPL, then set the Slide switches (WP-
Typ) to
9 Single compressor with external HS 2
In that case, do not connect the internal HS 2
(DHC) (control and supply).
Check that the Slide switches (WP-Typ) is set
correctly.
Slide switches (S1)
The DIP switches 1 and 2 have no effect on the
WPL.
DIP switch 3 position
Switch ON: SERVICE mode
Corresponding compressors (defaulted by
setting the Slide switches (WP-Typ)) are
started in one second intervals.
8 Troubleshooting
8.1 See operating and installation instructions WPM IIW
8.2 Checking the IWS settings
Fig. 20
LEDs
DIP switch 4 position
Switch ON: STAND ALONE operation
Should the WPM II develop a fault, the heat
pump can, in emergencies, be operated in
stand alone mode. In this operating mode
there is no communication with the heat
pump manager WPM II. The heat pump
regulates to a fixed temperature. The heat
pump starts at 50 °C and stops at 55 °C. The
frost protection sensor connected to the IWS
at terminals sensor 1,2 is used to sense the
control magnitude, i.e. in both cases, the fault
will be entered into the FAULT LIST (parameter
46) of the WPM II. Operation can starts 10
minutes after the fault has been removed; the
LED extinguishes.
To delete the faults on the IWS, select
parameter 52, then press PRG to reset the IWS.
The internal counter will then be returned to
zero.
Heat pump faults indicated by the LED: High
pressure, low pressure, central and hardware
faults on the IWS (see parameter 46).
Green LED (centre): Flashes during
initialisation, and becomes steady after the
BUS address has been allocated successfully.
Only then is the communication with WPM II
possible.
Green LED (right): Illuminates constantly,
when STAND ALONE operation has been
selected.
Frost protection and icing-up
protection during defrosting of an
externally installed heat pump are now lost.
In addition, remove the jumper between
terminals X4/5 and X4/6, and 230 V must
be applied between terminals X4/5. The
operating mode is indicated by the r.h. green
LED.
LEDs
Red LED:
Flashing or static: The LED flashes if a heat
pump fault occurs only once.
The system will be shut down. The red LED
illuminates permanently, if more than five
heat pump faults occur within two hours, the
system will be shut down permanently.
Reset button
In case of incorrect initialisation, see section
5.4.1 of the WPM II operating and installation
instructions.
WPM II
26_03_01_0661
BA
Slide switches (S1)
Reset button
Slide switches (WP-Typ)
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