Hypertherm XPR300 - Page 303

Diagnostics and Troubleshooting
8
XPR300 Instruction Manual 809480 303
752
Error
Phase Fault Ch1 There is a 3-phase error in
Chopper 1.
1. Confirm the input-line voltage is within+/-14%
of nominal. Refer to Input power requirements
on page 42.
2. Remove the power from the cutting system.
3. Remove the cover from the contactor.
4. Inspect the contacts for excess wear. Replace
the contactor, if excess wear is found.
Otherwise, continue with the following steps.
5. Inspect the following contactor components for
loose connections:
• Contactor
•Input to chopper
• Power cord
6. Tighten loose connections if found. Otherwise,
continue with the following steps.
7. If the code continues, contact your cutting
machine supplier or regional Hypertherm
Technical Service team.
Shut down Remote on-off
Diagnostic code
number and
category
Diagnostic code
name
Description Corrective action XPR action
Code cancels
with