27 - EN
6 Troubleshooting
In the unlikely event that a problem occurs on the equipment, this troubleshooting guide can be used to identify the probable cause and remedy.
Fault Codes
Troubleshooting should only be attempted by competent personnel. All major repair, and calibration work should be undertaken by a Parker
domnick hunter trained, qualified and approved engineer.
Fault
Probable Cause
Remedy
Power Connected but LCD and status
indicators not illuminated.
Fuse Blown
Replace Fuse
Ribbon cable disconnected
Reconnect Ribbon cable
Power disconnected
Reconnect Power
No / Low gas outlet pressure
Service Overdue
Service the generator
Internal gas leak
Check and Rectify
External gas leak
Check and Rectify
Low inlet pressure
Ensure pressure meets required specification
High Oxygen concentration.
Defective Oxygen cell.
Replace.
Leak in system piping.
Check and Rectify
Low inlet pressure
Compressor or ring main pressure low.
Check and Rectify
Inlet valve not open
Check and Rectify
Defect on pre-treatment package.
Refer to pre-treatment manual.
Excessive noise or vibration
Silencer loose or defective.
Check and Rectify
Solenoid valve wear or coil loose.
Check and replace if required.
High outlet pressure.
Outlet regulator defective.
Reset or replace.
Fault Codes
Notes
C1
Pressure Start Inhibit
Low inlet pressure. Inhibits start.
P1
Inlet Pressure Fault
Low inlet pressure during cycling.
P2
Pressure Sensor Fault
Outlet pressure sensor communication error.
E1
Power Failure
Y1
High oxygen alarm - outlet
Y2
Oxygen sensor communication failure - outlet
Communication fault between O
2
analyser and control board
Y3
Incorrect oxygen cell selected - outlet
Y4
Oxygen reading high out of range - outlet
Occurs when O
2
> 25% (% generators) / O
2
> 1.05% (ppm generators)
Y5
Oxygen sensor fault - outlet
Contact Parker domnick hunter
Y6
Oxygen sensor communication failure - EST
Y7
Incorrect oxygen cell selected - EST
Y8
Oxygen sensor high out of range - EST
Y9
Oxygen sensor fault - EST
Y10
EST Board communication failure
S1
Service due
