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Vaillant VR 52 - 6 Troubleshooting; Command Not Confirmed

Vaillant VR 52
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Troubleshooting
Operating and installation instructions 0020249211_03
23
6
fault that occurs here is displayed by the
LED flashing. If there is a fault, the selftest
is repeated and the product does not per-
form its intended function. If the selftest
runs through without any faults, the prod-
uct sends a radio telegram with its status
information.
6 Troubleshooting
6.1 Command not confirmed
If at least one transceiver does not con-
firm a command, the LED signal lights up
red once the incorrect transmission is
completed.
The reason for the incorrect transmission
may be radio interference caused by one
of the following:
Transceiver cannot be reached
Transceiver cannot implement the com-
mand (load failure, etc.)
Defective transceiver