STIEBEL ELTRON WPM - Fault Display; Heat Pump-Specific or Hardware Faults; 14 Specification; 14.1 Energy Consumption Data

COMMISSIONING
Specication
www.stiebel-eltron.com WPM | 49
Integral WPM heat pump manager
Carry out whatever steps are necessary to gain access to the built-
in heat pump manager. Observe the operating and installation
instructions of the appliance.
 Insert the micro-SD card with the new software into the
memory card slot.
13.2 Fault display
Faults in the system or in the heat pump are indicated on the
display. For heating system and heat pump troubleshooting and
analysis, all important process data and BUS subscribers can be
called up under DIAGNOSIS and a relay test can be carried out.
 For troubleshooting, analyse all available parameters before
opening the heat pump control panel.
All faults cause the heat pump to shut down. The red LED on the
IWS flashes for approx. 12minutes, the idle time is set and the
corresponding fault is written to the message list.
Once the fault time on the IWS and the idle time have elapsed, the
heat pump restarts. Even if the heat pump has already been reset
and the flashing red LED on the IWS has gone out, the heat pump
will not restart until the idle time has elapsed.
With all heat pumps, the fault inputs on the IWS have no effect. In
standard mode, 230 V is always present at the fault inputs.
When the heat pump has been shut down (controlled shut down)
and after a period of 10 s, the 230 V signal must be present. If
this is not the case, the red LED on the IWS flashes and CENTRAL
FAULT is displayed.
Note
For these faults, an entry is made in the message list.
The system will be shut down. The display message goes
out 10 min after the fault has been removed. The system
will be shut down permanently if 5 heat pump-specific or
hardware faults occur within 2 hours run. The heat pump
can only be restarted after the fault has been remedied
and the IWS reset.
13.3 Heat pump-specific or hardware faults
Also see chapter "Notifications".
13.3.1 The heat pump does not run
The heat pump type was incorrectly selected.
 Check the heat pump type in the menu "DIAGNOSIS/ SYS-
TEM/ HEAT PUMP TYPE".
 Perform a system reset ("COMMISSIONING/ RESET/
SYSTEM").
 Select the correct heat pump type.
The heat pump is in standby mode.
 Change the system over to programmed operation.
The power supply has been blocked; POWER-OFF is displayed.
 Wait for the blocking time to elapse. The heat pump will au-
tomatically start up again.
There is no heat demand.
 Check the set and actual values under the INFO menu item.
There may be incorrect fuse protection.
 See chapter "Specification / Data table".
Note
The heat pump can only be restarted after the fault has
been remedied and the heat pump reset (parameter: heat
pump reset).
Additional parameters available for system analysis:
- QUICK START: The quick start must only be carried out by our
customer support. The heat pump compressor is checked
during a quick start.
- RELAY TEST: Test for all relays in the heat pump manager.
13.3.2 The WPM display is not responding to entries
- Isolate the heat pump from the power supply.
- Restart the system.
- If an ISG is installed, the WPM must have completely started
up before you reconnect the ISG power supply.
14. Specification
14.1 Energy consumption data
The product data complies with EU regulations relating to the
directive on the ecodesign of energy related products (ErP).
WPM
Manufacturer STIEBEL
ELTRON
Temperature controller class (in inverter heat pump) VI
Temperature controller class (in ON/OFF heat pump) VII
Contribution of temperature controller to seasonal space heat-
ing energy efficiency (in inverter heat pump)
% 4
Contribution of temperature controller to seasonal space heat-
ing energy efficiency (in ON/OFF heat pump)
% 3.5
14.2 Data table
WPM
Electrical data
Power consumption VA 8
Relay breaking capacity A 2
Sensor resistance Ω 1000
Max. relay output breaking capacity A 2 (2)
Design peak voltage V 4000
Max. total breaking capacity of all relay outputs A 10 (10)
Power supply 1/N/PE ~ 230V 50 Hz
Versions
IP rating IP21
Communication system CAN
Number of automatic cycles 100000
Level of contamination 2
Function 1.B
Values
Ambient temperature °C 0...55