Variable Speed Controller Alarms - Conair GasTrac User Manual

V S
ARIABLE
C
ONTROLLER
A
LARMS
Alarm
07
Power Loss
07
Under Voltage
07
Over Voltage
07
Motor Stall
6-10
T
ROUBLESHOOTING
Fault code
PEED
ESC SEL
!
WARNING: The GasTrac should be tested and
repaired only by qualified technicians equipped with the
correct tools and trained in the maintenance and repair
of electrical systems and industrial gas appliances.
Possible cause
DC Bus Voltage remained
03
below 85% nominal for
more than 5 seconds on
power up.
DC Bus Voltage fell below
04
the minimum.
DC Bus Voltage exceeded
05
the maximum.
Motor has stalled.
06
GasTrac Process Air Heater
When a problem occurs, the variable speed
controller displays the parameter 07 and a
two-digit fault code. You must correct the
problem before restarting the GasTrac. To
restart after an alarm:
1
Turn the power disconnect
2 Press the GasTrac
Solution
Check for proper incoming AC
voltage.
Check for low incoming AC
voltage or power interruption.
The under voltage trip point
for 200-240 VAC units is: 210
VDC, which is equal to 150
VAC incoming voltage.
The under voltage trip point
for 380-460 VAC units is: 390
VDC, which is equal to 275
VAC incoming voltage.
Bus over voltage may be
caused by motor regeneration.
Check for high incoming AC
voltage.
The over voltage trip point for
200-240 VAC units is: 410
VDC, which is equal to 290
VAC incoming voltage.
The under voltage trip point
for 380-460 VAC units is:
815VDC, which is equal to
575 VAC incoming voltage.
Check for physical or mechan-
ical blockage of the combus-
tion blower fan.
then .
OFF ON
button.
RUN
UGD014/0497