Hypertherm Powermax30 AIR Service Manual - Manual (Page 73)

Powermax30 AIR Service Manual 808850 73
5 – Troubleshooting and System Tests
Error LED
The number of times the Error LED blinks indicates the problem detected. Each blink is a half-second long, and each
series of blinks is separated by a 2-second pause. See
System tests (below) for detailed test procedures.
Table 5
System tests
You can use either the ground clip near the top of the rear panel or the ground screw on the heatsink (marked by
the ground symbol on the power board) for any tests that require the multimeter to be attached to ground.
Figure 5 – Grounding options
Number of
blinks
Problem Solution
3 Faulty power board or
control board • Perform Test 3 – VBUS and voltage balance on power board on
page 82. If any of the values are incorrect, replace the power board.
• Perform Test 2 – power board voltage checks on page 80. If any of
the values for pins 5, 7, or 12 are incorrect, remove the control board
and test again. If the values are correct, replace the control board.
• If the values for pins 5, 7, or 12 are correct when you perform
Test 2 – power board voltage checks on page 80 but any other
values from Test 2 are incorrect, replace the power board.
4 Faulty fan, solenoid valve, or
power board • Perform Test 4 – solenoid valve on page 84 and Test 8 – fan on
page 90. If the solenoid valve test and the fan test both pass,
replace the power board. If Test 4 fails, replace the solenoid valve; if
Test 8 fails, replace the fan.
6 Inverter saturation • Install new consumables in the torch. If you continue to see this error
code, replace the power board.
1 2
1
2