Driver Troubleshooting
3A5379B
21
Blink Code
Error Type
Troubleshooting Steps
1
Alarm
Voltage Too Low
•
Verify that the line voltage is within the range specified in
Techni
-
cal Specifications
, page 51.
•
Use the recommended cord (see page 10).
•
Cycle the power and check the status indicator to see if the error is
still active.
2
Alarm
Voltage Too High
•
Verify that the line voltage is within the range specified in
Techni
-
cal Specifications
, page 51.
•
Cycle the power and check the status indicator to see if the error is
still active.
•
Verify that the outlet check valve is installed on the pump and func
-
tions properly. A faulty outlet check valve can result in excessive
pump speed, causing high voltage internally to the electric driver.
3
Deviation
Low Temperature
•
Warm equipment.
•
Contact your Graco distributor or Tech Service for more informa
-
tion.
4
Deviation
High Temperature
The temperature of the system is near the maximum operation tem
-
perature. The performance has been reduced to prevent the driver
from completely shutting down.
•
Check fan operation. Clean the fan and driver housing. Verify the
fuses are intact in the junction box.
•
Reduce the pressure, duty cycle, or gun tip size.
•
Move the unit to a cooler location.
5
Alarm
Driver Motor Temperature Fault
The motor is running too hot. Allow the unit to cool.
•
Check fan operation. Clean the fan and driver housing. Verify the
fuses are intact in the junction box.
•
Reduce the pressure, duty cycle, or gun tip size.
•
Move the unit to a cooler location.
6
Alarm
Board Temperature Fault
The control board is running too hot. Allow the unit to cool.
•
Check fan operation. Clean the fan and driver housing. Verify the
fuses are intact in the junction box.
•
Reduce the pressure, duty cycle, or gun tip size.
•
Move the unit to a cooler location.
7
Alarm
Driver Motor Encoder Calibration Error
•
Cycle the power and check the status indicator to see if the error is
still active.
•
Calibrate the encoder (see page 29).
•
Contact your Graco distributor or Tech Service for more informa
-
tion.