INSTALLATION
Maintenance
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WPE-I H 400 Premium |
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ISH
The two individual LEDs show the communication status.
LED
Meaning
RX (receiver)
illumi-
nates
The control is processing a mes-
sage or responding to a message
that was sent to the inverter.
TX (transmitter) illumi-
nates
The control is responding to a mes-
sage.
The four LEDs show the control status.
LED
Meaning
1 2 3 4
x
Standard condition
x ○ ○ ○ Safety stop
The compressor is blocked.
x x x x Update mode
The heat pump profile cannot be configured.
- - - - Frost protection
Not assigned
x Flashing
○ illuminates
15.2 Error message
If the appliance registers an error, this is displayed clearly on the
programming unit.
15.2.1 The heat pump is not running
The wrong heat pump is set on the programming unit.
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Check the set model in the “Process data / Version informa-
tion” menu.
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Have the service engineer set the correct heat pump.
The heat pump is in standby mode [ ].
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Change the system setting to standard operation.
The blocking time for the power supply utility (PSU) is applied.
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Wait for the blocking time to elapse. The heat pump will au-
tomatically start up again.
There is no heat demand.
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Under the menu item “Process data / Operating data / Calcu-
lated demand (heating)”, check if there is a heating demand.
There may be an incorrect fuse protection rating.
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See chapter “Specification / Data table”.
Note
The heat pump can only be restarted after the error has
been removed and deleted from the message list.
15.3 Fault table
See the appendix for an overview of possible errors.
16. Maintenance
WARNING Electrocution
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Isolate the appliance from the power supply when
carrying out any work.
Following isolation from the mains supply, parts of the
appliance may remain live. This is because the condens-
ers on the inverter still have to discharge. When the
condensers have discharged, the LEDs on the inverter
stop flashing.
We recommend a regular inspection (to establish the current con-
dition of the system), and maintenance if required (to return the
system to its original condition).
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Check the pressure in the brine circuit regularly. Never ex-
ceed the maximum pressure of 6 bar.
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Check the pressure in the heating circuit at least twice a year.
Never exceed the maximum pressure of 6 bar.
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Check the safety valve for correct function.
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Check the DHW lines for leaks between the heat pump and
the draw-off points.
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Check the brine circuit for leaks.
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Check and clean the filters in the heating circuit and brine
circuit twice in the first year since commissioning. The main-
tenance interval can be extended in subsequent years.
WPE-I 59 H 400 Premium | WPE-I 87 H 400 Premium
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Ensure that the heat pump refrigerant circuit is tested once a
year for leaks, in accordance with EC DIRECTIVE 517/2014.
17. Decommissioning
!
Material losses
If the heat pump is completely switched OFF and there is
a risk of frost, drain the system on the water side.
