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PROBLEM
The curtains do
not work.
The curtains run
in manual mode
but not in auto-
matic mode.
The defective
potentiometer
pilot light turns on.
The Stage 2 fans
or heaters do not
work.
CHECK POINTS
The stage 1 fuse is blown.
Replace the fuse.
The curtain parameter settings are not correct.
Correct the parameter settings.
Stage 1 — Curtains.
The potentiometer signal does not vary when
the winch is working.
Check the potentiometer.
Check the potentiometer wiring.
Redo the calibration.
Put the controller in manual mode. Measure
the voltage between terminals C and #3 on
the probe connections. Voltage should vary
between 0 and 2.5 VDC.
The fuse on the winch output is blown.
Replace the fuse.
The display board inter-connect cable is not
plugged into the power supply board properly.
Be sure the cable is firmly plugged in.
The wiring is incorrect.
Correct the wiring. In particular, be
sure two different lines are con-
nected to each motor: line L1
modulated by the controller should
be combined with another line (N for
115V or L2 for 230V) to activate the
fan motor. Also be sure the stage 2
COMMON is supplied by line L1.
TC4-NVS/P
TC4-NVS/P.rev.05
See
39
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