Hypertherm XPR300 - Page 290

Diagnostics and Troubleshooting
8
290 809480 Instruction Manual XPR300
670
Error
Thermistor
Fault-Coolant
The main control PCB finds a
shorted coolant temperature
sensor.
Use a digital multimeter to measure the resistance
from the thermistor. Refer to How to measure
resistance from thermistors on page 345.
Shut down Remote on-off
671
Error
No Thermistor-Ind
1
The main control PCB finds
an open circuit in Inductor 1
(1A).
Shut down Remote on-off
672
Error
No Thermistor-Ind
2
The main control PCB finds
an open circuit in Inductor 2
(1B).
Shut down Remote on-off
673
Error
No Thermistor-Ind
3
The main control PCB finds
an open circuit in Inductor 3
(2A).
Use a digital multimeter to measure the resistance
from the thermistor. Refer to How to measure
resistance from thermistors on page 345.
Shut down Remote on-off
674
Error
No Thermistor-Ind
4
The main control PCB finds
an open circuit in Inductor 4
(2B).
Use a digital multimeter to measure the resistance
from the thermistor. Refer to How to measure
resistance from thermistors on page 345.
Shut down Remote on-off
677
Error
No Thermistor-Xfmr The main control PCB finds
an open circuit in the
transformer.
Use a digital multimeter to measure the resistance
from the thermistor. Refer to How to measure
resistance from thermistors on page 345.
Shut down Remote on-off
678
Error
No Thermistor-Ch1 The XPR cutting system
cannot detect the
temperature sensor for
Chopper 1.
1. Make sure that the 2 wires for J9 are fully
engaged.
2. Use a digital multimeter to measure the
resistance from the thermistor. Refer to How to
measure resistance from thermistors on
page 345.
Ramp down Remote on-off
679
Error
No Thermistor-Ch2 The XPR cutting system
cannot detect the
temperature sensor for
Chopper 2.
1. Make sure that the 2 wires for J9 are fully
engaged.
2. Use a digital multimeter to measure the
resistance from the thermistor. Refer to How to
measure resistance from thermistors on
page 345.
Ramp down Remote on-off
Diagnostic code
number and
category
Diagnostic code
name
Description Corrective action XPR action
Code cancels
with