Airstream TC5-2V4SA User Manual page 52

TC5-2V4SA
PROBLEM
Stage 1 or 2
fans are not
running.
52
TC5-2V4SA rev.06
CAUSE
The wiring is incorrect.
The Stage's fuse is
open.
The display board
interconnect cable is not
plugged into the power
supply board properly.
The minimum speed is
too low.
The fan motor is
defective.
SOLUTION
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. Also, be sure the Stage 1
and 2 COMMON is supplied by line
L1.
Replace the fuse.
Make sure the cable is firmly
plugged in with the tabs in place.
Adjust the minimum speed to a
higher value.
Check if motor is defective by
connecting it to an alternate
power supply. Replace the
motor if it still doesn't operate.