System Tests - Hypertherm Powermax 30 Service Manual

MAINTENANCE
Error LED
The number of times the Error LED flashes indicates the problem detected. Each flash is a half-second long and
each series of flashes is separated by a 2-second pause. See System tests , later in this section, for detailed test
procedures.
Number of error
Problem indicated
LED flashes
1 Faulty control board
2 Faulty power board
Either a faulty power board
3
or a faulty control board
4 Faulty gas solenoid valve
5 Faulty fan

System tests

There is a ground clip near the top of the rear endcap that can be used as ground for any tests that require the
multimeter to be attached to ground. There is also a ground on the heat sink with access through the power board
as shown in test 1.
3-14
Solution
Replace the control board.
Replace the power board.
• Perform test 3. If any of the values are incorrect, replace
the power board.
• Perform test 2. 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.
• When performing test 2, if the values for pins 5, 7, and 12
are correct, but any other values are incorrect, replace
the power board.
Replace the gas solenoid valve.
Replace the fan.
Ground wire clip
powermax30
Service Manual