Hypertherm SensorOHC - Manual (Page 14)

10 Sensor OHC Operation and Set Up Guide
Error Conditions
Error Indications
The red ERROR LED indicates abnormal conditions by flashing an error code. The error code
meanings are listed below.
1 Flash - Sensor Shorted Error
Indicates that the sensor is in contact with the plate. In Auto Height mode, this will cause a rapid
retract until the sensor no longer is in contact with the plate. This may also indicate that re-
calibration is required
2 Flashes - Sensor Open Error
Indicates that the sensor is not plugged in or the sensor cable has opened. In Auto Height
mode, this error will disable all motion. This may also indicate that re-calibration is required
3 Flashes - Input Voltage Low
Indicates that the 24Vac power source has dropped more than 25% below nominal. Check the
power source and all connections.
4 Flashes - Input Voltage High
Indicates that the 24Vac power source is more than 20% high and may cause damage to the
unit.
5 Flashes - Motor Drive Over Temp Warning
Suspend operation and allow unit to cool down.
6 Flashes - Invalid data in the selected cable length data table.
Set DIP switches 1 thru 3 to a valid cable length setting.
Red Error LED