Atlas Copco GA 15 Instruction Book page 146

Condition
Condenser pressure too high
or too low
Compressor stops or does not
start
Electronic condensate drain
remains inoperative
Condensate trap continuously
discharges air and water
Evaporator pressure is too
high or too low at unload
144
Fault
Evaporator pressure too high
Condenser pressure too high
Fan control switch out of order Replace
Fan blades or fan motor out of
order
Ambient temperature too high Check and correct; if necessary, draw
Condenser externally clogged Clean condenser
Electric power supply to
compressor is interrupted
Thermal protection of
refrigerant compressor motor
has tripped
Electronic drain system
clogged
Automatic drain out of order
Hot gas bypass valve
incorrectly set or out of order
Condenser pressure too high
or too low
Shortage of refrigerant
Remedy
See below
See below
Check fan/fan motor
cooling air via a duct from a cooler place or
relocate the compressor
Check and correct as necessary
Motor will restart when motor windings have
cooled down
Have system inspected
Clean the filter of the automatic drain by
opening the manual drain valve. Check
functioning of the drain by pushing the test
button.
Have system checked. If necessary, replace
the automatic drain.
Have hot gas bypass valve adjusted
See above
Have circuit checked for leaks and recharged
if necessary
Instruction book
2920 7083 31