Hypertherm Powermax 85

TROUBLESHOOTING AND SYSTEM TESTS
5-2 powermax 65/85 Service Manual
Fault codes ............................................................................................................................................................................................ 5-21
Displaying the service screen ................................................................................................................................................. 5-21
Important fault icons ................................................................................................................................................................. 5-22
Performing a cold restart ......................................................................................................................................................... 5-22
Fault codes and solutions ........................................................................................................................................................ 5-23
Troubleshooting guide ........................................................................................................................................................................ 5-32
System tests.......................................................................................................................................................................................... 5-38
Test 1 – Voltage input .............................................................................................................................................................. 5-39
Test 2 – DC Power Buss ........................................................................................................................................................ 5-40
Test 3 – Output diodes............................................................................................................................................................ 5-42
Test 4 – Inverter and PFC temperature sensor .................................................................................................................. 5-43
Test 5 – Flyback circuit (DC minor voltages) ..................................................................................................................... 5-46
Test 6 – Torch stuck open (TSO) ......................................................................................................................................... 5-48
Test 7 – Start signal ................................................................................................................................................................. 5-50
Test 8 – Torch cap switch ...................................................................................................................................................... 5-51
Test 9 – Electronic regulator .................................................................................................................................................. 5-52
Test 10 – Pressure sensor ...................................................................................................................................................... 5-53
Test 11 – Fan ............................................................................................................................................................................. 5-54
Test 12 – AUX switch .............................................................................................................................................................. 5-55