UGD014/1097
GasTrac Process Air Heater
T
ROUBLESHOOTING
6-11
Alarm
Motor Overload
Over Temperature
Over current
EEPROM Fault
Possible cause
The internal electronic
overload tripped.
Excessive heat was
detected in the variable
speed control.
Excessively high current
was detected in the hard-
ware trip circuit.
The controller EEPROM
has invalid data.
Solution
❒
Check for physical or
mechanical blockage of the
combustion blower fan.
❒
Check for a faulty combus-
tion blower motor.
❒
Clean the air filters on both
sides of the GasTrac electri-
cal enclosure. Verify that the
cooling fan in the electrical
enclosure is operating cor-
rectly.
❒
Check for dirty or blocked
heat sink passages or a
faulty fan inside the variable
speed controller.
❒
Check for a short circuit at
the variable speed control
output.
❒
Check for physical or
mechanical blockage of the
combustion blower fan.
Reset EEPROM. See Resetting
Factory Defaults in the Allen
Bradley variable speed con-
troller manual.
07
07
07
08
07
12
07
32
V
ARIABLE
S
PEED
C
ONTROLLER
A
LARMS
ESC
SEL
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:
Turn the power disconnect
OFF
then
ON
.
Press the GasTrac
RUN
button.
1
2
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.
!
Fault code