Hypertherm XPR170 - Page 282

Diagnostics and Troubleshooting
8
282 810060 Instruction Manual XPR170
666
Error
Thermistor
Fault-Xfmr
The main control PCB finds a
shorted temperature sensor
in the transformer.
Use a digital multimeter to measure the resistance
from the thermistor. Refer to How to measure
resistance from thermistors on page 336.
Shut down Remote on-off
667
Error
Thermistor
Fault-Ch1
Chopper 1 finds a shorted
temperature sensor near the
insulated-gate bipolar
transistor (IGBT).
Ramp down Remote on-off
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 336.
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
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 336.
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 336.
Ramp down Remote on-off
681
Error
No Thermistor-
Coolant
The main control PCB
detects an open circuit in the
coolant sensor.
Use a digital multimeter to measure the resistance
from the thermistor. Refer to How to measure
resistance from thermistors on page 336.
Shut down Remote on-off
Diagnostic code
number and
category
Diagnostic code
name
Description Corrective action XPR action
Code cancels
with