Hypertherm XPR170 - Page 294

Diagnostics and Troubleshooting
8
294 810060 Instruction Manual XPR170
748
Alert
Low Speed-
HxFan 1
The fan tachometer feedback
is below the minimum.
1. Examine the fan. Make sure that the following
fan connections are good and tighten loose
connections if found:
• The fan connector
• The wiring to J2 and J5 on the fan power
distribution PCB
• The wiring to J7 on the control PCB 1
2. Examine the 48 VDC power source output. If
not correct, replace the 48 VDC power source.
3. If you do not find any loose connections and the
48 VDC power source is good, replace the fan.
None Set process;
remote on-off
750
Alert
Low speed CAB
FAN1 (Control
Side) Fan 1
Fan speed is below the
minimum acceptable RPM
value.
1. Examine the fan. Make sure that the following
fan connections are good:
• The fan connector.
• The wiring to J7 Low speed CAB FAN1 (control
side) Fan 1 on the fan power distribution PCB.
• The wiring to J7 on the control PCB 1.
2. Tighten loose connections if found.
3. Examine the 48 VDC power source output. If
not correct, replace the 48 VDC power source.
4. If you do not find any loose connections and the
48 VDC power source is good, replace the fan.
None Set process;
remote on-off
751
Alert
Low speed CAB
FAN1 (Control
Side) Fan 2
Fan speed is below the
minimum acceptable RPM
value.
1. Examine the fan. Make sure that the following
fan connections are good:
• The fan connector.
• The wiring to J8 Low speed CAB FAN2 (control
side) Fan 2 on the fan power distribution PCB.
• The wiring to J7 on the control PCB 1.
2. Tighten loose connections if found.
3. Examine the 48 VDC power source output. If
not correct, replace the 48 VDC power source.
4. If you do not find any loose connections and the
48 VDC power source is good, replace the fan
None Set process;
remote on-off
Diagnostic code
number and
category
Diagnostic code
name
Description Corrective action XPR action
Code cancels
with