Maintenance
HPR400XD Auto Gas  –  806160  5-15
Error code troubleshooting  –  error codes 054 to 061
Error code 
number
Name Description Corrective action
054
High 
shield gas 
pressure
Shield gas pressure is over 
upper limit of: 
7.58 bar (110 psi) – manual 
9.65 bar (140 psi) – auto
1.  Verify gas supply regulator settings. See Setting the 
supply regulators (Installation section).
2. Verify pressure settings on gas console with cut chart.
3.  Solenoid at off-valve is not opening. Verify power to 
valves, disconnect plasma and shield hoses exiting off-
valve. If pressures decrease, a valve is not functioning or 
no power to the valve.
055
MV1 inlet 
pressure
Auto Gas
Only
Motor valve 1 inlet pressure 
is less than 3.45 bar 
(50psi) or greater than 
9.65 bar (140 psi).
1.  Verify that gas pressure transducer P1 is between 3.45 
bar (50 psi) and 9.65 bar (140 psi). Increase or decrease 
the inlet gas pressure to correct the problem.
056
MV2 inlet 
pressure
Auto Gas
Only
Motor valve 2 inlet pressure 
is less than 3.45 bar 
(50psi) or greater than 
9.65 bar (140 psi).
1.  Verify that gas pressure transducer P2 is between 3.45 
bar (50 psi) and 9.65 bar (140 psi). Increase or decrease 
the inlet gas pressure to correct the problem.
057
Cut gas 1 
pressure
Auto Gas 
Only
Cut gas 1 outlet pressure is 
less than 3.45 bar
(50 psi) or greater than 
9.65 bar (140 psi) in the 
selection console.
1.  Verify that gas pressure transducer P3 is between 3.45 
bar (50 psi) and 9.65 bar (140 psi). Increase or decrease 
the inlet gas pressure to correct the problem.
058
Cut gas 2 
pressure
Auto Gas 
Only
Cut gas 2 outlet pressure is 
less than 3.45 bar
(50 psi) for non-mixing, or 
less than 1.38 bar (20 psi) 
when mixing or greater than 
9.65 bar (140 psi) for non-
mixing and mixing.
1.  Verify that gas pressure transducer P4 is between 3.45 
bar (50 psi) and 9.65 bar (140 psi). Increase or decrease 
the inlet gas pressure to correct the problem.
060
Low coolant 
flow
Coolant flow is less than the 
required 2.3 lpm 
(0.6 gpm).
1. Verify that the correct consumables are properly installed.
2.  Perform the coolant flow test procedure in the 
Maintenance section of the manual.
061
No plasma 
gas type
Manual gas - The gas 
console control board is not 
receiving signals from the 
gas selector knob.
Auto gas - The selection 
console is not receiving the 
plasma gas type signal.
1.  Auto gas - the process parameters may not have been 
downloaded. Verify that the process information can be 
viewed on the CNC screen.
2.  Manual gas - the selector knob (2) may be set between 
positions. Reset the knob.
3.  Verify that there is power to the console by looking to 
see if any LED on any board in the selection console 
(auto) or gas console (manual) is illuminated. If no LED is 
illuminated, verify that the fuse on the power distribution 
PCB is in proper working condition.
4. If the problem still exists, replace the control board.