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TC4-NVS
PROBLEM
The fans,
heating or
mist units
connected to
one of the
stages are
not operating.
36
TC4-NVS.rev.04
CAUSE
The stage's fuse is
open.
The display board
interconnect cable is
not plugged into the
power supply board
properly.
The wiring is incor-
rect.
The fan motor,
heating or mist unit is
defective.
The controller is
defective.
SOLUTION
Replace the fuse.
Make sure the cable is firmly
plugged in with the tabs in place.
Correct the wiring. In particular,
make sure two different lines
are connected 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 motor or
heating unit. Also, make sure the
stage's COMMON is supplied by
line L1.
Verify if the motor, heating or
mist unit is defective by con-
necting it to an alternate power
supply. Replace If it still is not
operating.
Listen to see if there is a clicking
sound when the stage's pilot
light turns on. If there is no
clicking sound, contact your
distributor to repair the control-
ler.
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