Assembly and Operating Instructions
Problem
Drive is not functioning.
Blind or shutter moves in
the wrong direction.
The VC420II does not
execute manual control
commands.
The VC420II does not
execute automatic con-
trol commands.
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What to do if...?
Cause
Faulty connection.
Faulty connection.
1. Transmitter is not
programmed in the
VC420-II.
2. External push button
unit is connected the
wrong way.
1. Transmitter is not
programmed in the
VC420-II.
2. Sliding switch is set
to manual mode.
Remedy
Check connection.
Exchange s and t
wires in the power sup-
ply unit.
1. Programme transmit-
ter.
2. Connect the push
button unit correctly.
1. Programme transmit-
ter.
2. Set the sliding switch
on the transmitter to
automatic mode.