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Appendix
38 Installation instructions 0020237057_00
Message Possible cause Measure
Communication fault: Heat
generator %
The cable is defective Replace the cable.
Incorrect plug connection Check the plug connection.
Communication fault: Heat
pump %
The cable is defective Replace the cable.
Incorrect plug connection Check the plug connection.
Communication fault: VPM-W The cable is defective Replace the cable.
Incorrect plug connection Check the plug connection.
Communication fault: VPM-S The cable is defective Replace the cable.
Incorrect plug connection Check the plug connection.
Communication fault: VMS The cable is defective Replace the cable.
Incorrect plug connection Check the plug connection.
Sensor fault S $ VR70 % Sensor defective Replace the sensor.
Sensor fault S $ VR71 Sensor defective Replace the sensor.
Fault: Heat generator % Fault in the heat generator See the instructions for the heat generator displayed.
Fault: Heat pump % Fault in the heat pump See the instructions for the heat pump displayed.
Fault: Solar pump % Fault in the solar pump Check the solar pump.
Module not supported Unsuitable module connected,
e.g.VR 61, VR 81
Install a module that the controller supports.
Incorrect configuration: VR70 Incorrect set value for the
VR 70
Set the correct set value for the VR 70.
Incorrect configuration: VR71 Incorrect setting value for the
VR 71
Set the correct setting value for the VR 71.
System diagram selection
incorrect
Incorrectly selected system dia-
gram
Set the correct system diagram.
No remote control for heating
circuit %
No remote control unit Connect the remote control unit.
No VR70 for this system No VR 70 module Connect the VR 70 module.
VR71 not supported for this
system
VR 71 module connected in the
system
Remove the VR 71 module from the system.
Incorrectly selected system dia-
gram
Set the correct system diagram.
Hot water temperature sensor
S1 not connected
Hot water temperature sensor
S1 not connected
Connect the hot water temperature sensor to the VR 70.
Incorrect configuration: MA2
VWZ-AI
Incorrectly connected VR 70
module
Connect the VR 70 module to the appropriate system diagram.
Incorrectly connected VR 71
module
Connect the VR 71 module to the appropriate system diagram.
Combination of VR70 and
VR71 not permitted
VR 70 and VR 71 are connec-
ted in combination
Connect either the VR 70 or the VR 71.
Cascades not supported Incorrectly selected system dia-
gram
Set the correct system diagram that contains cascades.
Outside temperature sensor
damaged
Outside temperature sensor
faulty
Replace the outside temperature sensor.
Incorrect configuration: VR70
% MA
Incorrectly selected setting
value for the multi-function
output
In the MA VR70, addr. 1 function, set the setting value that is
appropriate for the connected component on the VR 70's multi-
function output.
Incorrect configuration: VR71 Incorrectly selected setting
value for the multi-function
output
In the MA VR71 function, set the setting value that is appropri-
ate for the connected component on the VR 71's multi-function
output.
Communication fault: VR91 % The batteries in the remote con-
trol are flat
Change all the batteries ( Operating and installation instruc-
tions for the VR 91f).
The batteries in the remote con-
trol have not been inserted cor-
rectly
Insert the batteries in the battery compartment, making sure
that the poles are the right way round ( Operating and install-
ation instructions for the VR 91f).
The remote control is outside
the radio reception range
1. Take the remote control to the radio receiver unit and see if
the reception strength increases.
2. If the reception strength is 4, find a new installation site for
the remote control.
The remote control is defective Replace the remote control unit.
38


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