Table 34 - Diagnostic code descriptions (continued)
Code Priority Description
XPR
models
Corrective action
784 Error Main 24V high All models Troubleshooting for high voltage on the 24 V power
supply on page 379
785 Alert Cooler Fan1 Tach XPR460
786 Alert Cooler Fan2 Tach XPR460
787 Alert Cooler Fan3 Tach XPR460
788 Alert Cooler Fan4 Tach XPR460
These codes occur when feedback for a fan tachome-
ter is less than the minimum. If you continue to get
this code, speak to your cutting machine supplier or
regional Hypertherm Technical Service team.
• XPR action: None
• Code cancels with: Start or set process; remote on-
off
789 Alert Fieldbus fault All models This code occurs when there is an error during com-
munication with the fieldbus (field bus) module. If
you continue to get this code, speak to your cutting
machine supplier or regional Hypertherm Technical
Service team.
• XPR action: None
• Code cancels with: Start or set process; remote on-
off
790 Error Eco mode timeout XPR460 This code occurs when the system cannot find chop-
pers after it gets out of eco mode. If you continue to
get this code, speak to your cutting machine supplier
or regional Hypertherm Technical Service team.
• XPR action: None
• Code cancels with: Remote on-off
791 Error No Thermistor–Con Xfmr All models Use a digital multimeter to measure the resistance
from the thermistor. Refer to Measure resistance from
thermistors on page 307.
• XPR action: Shut down
• Code cancels with: Remote on-off
792 Error Thermistor Fault–Con
Xfmr
All models Use a digital multimeter to measure the resistance
from the thermistor. Refer to Measure resistance from
thermistors on page 307.
• XPR action: Shut down
• Code cancels with: Remote on-off
793 Error Over temp–Con Xfmr All models Troubleshooting for over-temperature faults for induc-
tors and transformers on page 337
Diagnostics and Troubleshooting
8
292
811530 Instruction Manual XPR460
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