User's Manual

WHITESTAR SIGNATURE PRO System
8 • Error Messages Troubleshooting and Diagnostics
RX Only –NGP Z370500 Rev. B 1116
8-30
308 External air pressure high/low.
Probable Cause: There is a valve or drive circuit failure.
Corrective action:
1. Check air hose connections.
2. Select End Case.
3. Select Next Case.
4. If the error does not clear or if the error continues to occur, document the error
message and contact AMO for technical service.
309 Piston pump pressure high/low.
Probable cause: The pump or the drive circuit failed.
Corrective action:
1. Select End Case.
2. Select Next Case.
3. If the error does not clear or if the error continues to occur, document the error
message and contact AMO for technical service.
311 Dump valve pressure high/low.
Probable cause:
• Piston pump not working.
• The VIT dump valve not closing.
Corrective action:
1. Select End Case.
2. Select Next Case.
3. If the error does not clear or if the error continues to occur, document the error
message and contact AMO for technical service.