MAINTENANCE
5-24 HPR400XD Manual Gas Instruction Manual
Error code
number
Name Description Corrective action
159
Motor-drive
fault
The pump-motor-drive
board (PCB7) is
indicating a drive fault.
1. Verify that the circuit breaker on PCB7 has not tripped. If it
has tripped, reset the breaker by pressing the button until it
is even with the top of the circuit breaker. If the circuit
breaker is not tripped and there is no power to PCB7, verify
that the fuse on PCB2 in the power supply is good.
2. If D32 illuminates, the solenoid valve and motor are drawing
too much current. D32 will only illuminate for a short time,
and extinguishes after the outputs from the pump-motor-
drive turn-off in response to the fault condition. Verify the
wiring to the solenoid valve and the motor. Verify that the
pump spins freely and is properly mounted to the motor.
Look for obstructions in the torch, consumables, coolant
lines, and in-line filter. Verify that the solenoid valve is
operating. Any of these can cause the motor or solenoid
valve to draw excessive current. Test for low coolant flow by
using the coolant flow test on page 5-33
3. If D32 illuminates immediately at power-up, and all the
items above have been verified, replace PCB7.
4. If D30 illuminates, the IGBT drive has encountered an
overcurrent condition. D30 will only illuminate for a short
time, and extinguishes after the outputs from the pump
motor-drive turn off. Follow the same steps for D32 above.
5. If D31 illuminates, the heatsink thermistor is indicating that
the heatsink is too hot. Wait 10 minutes for it to cool. If the
error remains, verify that the wires from heatsink on PCB7
are properly connected to the J6 connector on PCB7. If the
error still remains, turn OFF all power to the system and
measure the resistance on the J6 connector between pins
1 and 2. At 25° C (77° F) the resistance should be 10k.
160
HPR cooler’s
CAN fault
Communication between
the control board (PCB3
in the power supply) and
the cooler sensor board
(PCB1 in the cooler) was
interrupted for more than
1 second.
1. Verify that the cable connections from the power supply to
the cooler are good.
2. Verify that D1 (+ 5 VDC) and D2 (+3.3 VDC) are
illuminated on PCB1 inside the cooler.
3. Verify that the CAN bus LEDs, D7 and D8 are blinking.
Error code troubleshooting – 15 of 16
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