Atlas Copco GA 11 VSD MED, Instruction Book

Page: 89 / 104

Condition Fault Remedy
LAN symbol blinking (forced local
mode) The compressor cannot
communicate with the ES-MED Check the ES-MED supply, CAN
and ES settings.
Check the CAN network cables and
connectors and local CAN settings
Motor tripped The motor draws too much current Verify the ampere meter and
compare to the required maximum
value (see service diagram and
section
Electric cable size . Verify oil
level, fan and power supply (e.g.
phases).
FTGOL (failed to go on load) The pressure switch in the oil
separator vessel doesn’t register a
pressure above 2-3 bar while the
compressor is loaded. Verify cable and connections.
Verify the switch.
Verify that the air consumption
doesn’t exceed air delivery of
compressors.
Verify filter element.
Verify solenoid valve.
Verify that no parts are leaking.
Verify inlet valve opening.
Verify oil separator element.
Verify safety valve.
Verify compressor element.
EFL (Emergency Forced Local) The compressor's local pressure
transducer senses a pressure lower
than 80% of the nominal pressure. Verify ES-MED.
Verify that the air consumption
doesn’t exceed air delivery of the
compressors.
Instruction book
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