Condition Fault Remedy
Compressor element out of order Consult Atlas Copco
Condition Fault Remedy
Safety valve blows Minimum pressure valve
malfunctioning
Check and have defective parts
replaced
Oil separator clogged Have element replaced
Safety valve out of order Have valve checked. Replace if
necessary
On Full-Feature compressors, dryer
piping clogged due to formation of
ice
Have system checked by Atlas
Copco
Condition Fault Remedy
Compressor element outlet
temperature or delivery air
temperature above normal
Oil level too low Check and correct, see
Operation instructions / During
operation
On air-cooled compressors,
insufficient cooling air or cooling air
temperature or relative humidity is
too high
Check for cooling air restriction
or improve ventilation of the
compressor room. Avoid
recirculating of cooling air. If
installed, check capacity of
compressor room fan
Oil cooler clogged Clean cooler
By-pass valve malfunctioning Have valve tested
Air cooler clogged Clean cooler
Compressor element out of order Consult Atlas Copco
Degraded oil Check service intervals, see
Preventive maintenance
schedule
Condition Fault Remedy
Low Load Alarm triggered:
Compressor running with too low oil
temperature over a longer period of
time
Solenoid valve malfunctioning Replace valve
Extreme low usage of compressor Increase loading profile (longer
and/or more load cycles
required)
If not possible, consult Atlas
Copco
Converter fault codes
If a problem is detected by the converter, a specific code (Main motor converter alarm) will appear on the
Elektronikon display, together with a fault code. Below table lists the most important error codes. If
another code appears, please contact Atlas Copco.
Instruction book
114 2920 7109 23
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