53
TC5-2V2SA.rev.05
TC5-2V2SA
SOLUTION
PROBLEM
CAUSE
Stage 1 or 2
fans run
continuously at
full speed.
The wiring is incorrect.
The ambient temperature
is above the set point.
Fix the wiring.
Adjust the set point to the desired
value.
Stage 1 or 2
fans run
erratically.
The selected motor
curve is inappropriate.
Select an appropriate motor
curve.
The differential is too
small.
Adjust the differential to a higher
value.
The time on or time off
is too short.
Adjust the time on or time off to a
higher value.
Time off is set to zero.
Set time off to a value other than
zero.
Stage 1 fans do
not stop
running when
the controller
is operating in
minimum
ventilation
cycle.
The wiring is incorrect.
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 COMMON is supplied by
line L1.
Humidity compensation
is activated and relative
humidity exceeds set
point.
Adjust set point or deactivate
compensation as required.
