Hypertherm Powermax125 Service Manua - Manual (Page 133)

Powermax125 Service Manual 808070 133
8 – Troubleshooting and System Tests
0-19-9 Power board hardware
protection. One or more
major power board hardware
faults (or electrical noise)
detected: Alert.
Fault 0-19-9 can occur 3 to
10 times before becoming a
0-99 fault.
If fault code 0-19 appears
upon power-up, wait
1 minute to see if fault code
0-99 appears. This could
indicate a faulty auxiliary
switch.
On On
The inverter shuts down and does not fire
again for several seconds. If the fault is
caused by electrical noise, the fault clears
in a few seconds and the machine
operates normally.
If a true fault continues to occur, the 0-99
fault code appears on the operator
screen:
• Access the fault log in the service
screen to identify the major fault.
• Perform Test 12 – AUX switch on
page 164 if fault code 0-99 occurs
after fault code 0-19 displays for
1 minute.
0-20-0 Low gas pressure
The gas pressure has fallen
below the minimum pressure
for that process, mode, and
lead length.
On On
• Verify that the gas line is properly
installed.
• Replace the air filter element if it is
dirty.
• Replace the gas supply line if it is
restricted.
• Verify that the inlet pressure is 5.9 to
9.3 bar (85 to 135 psi).
With proper air connected, measure the
resistance between J5 pins 1 and 2.
• If the circuit is shorted, replace the
power board.
• If the circuit is open, check the cable
harness between J5 and the pressure
switch. If the harness is good, replace
the pressure switch (228688).
• Perform Test 10 – Pressure sensor on
page 163.
0-nn-n
Fault
code
Description
Power
LED Fault
LED Fault
icon
Solutions