Parker Hiross Polestar-Smart PST075 Manuel D'utilisation page 13

7 Troubleshooting
High current absorption
Compressor noisy
Compressor
No
Condenser dirty or
components
obstructed
perished
Yes No
Repair or
Compressor win-
Yes
replace
ding with partial
compressor
loss of insulation
Z
No
English
FAULT
Low dew point
Yes
Clean Yes
Low cooling air
condenser
temperature
No
Replace
Fan always
pressure
Yes
working (PV
switch
pressure switch
Z
fault)
No
Calibrate
Yes
Hot gas valve not
valve
calibrated
Z
No
REMEDY
CAUSE
High dew point re-
frigeration compressor
operating?
Increase
cooling air
temperature
Excessive thermal load
(air fl ow, inlet temperature)
No
Replace
Fan pressure
Yes pressure
switch (PV)
switch
not set
Z
No
No
Low current Yes refrigerant
absorption
recharge
Z
No
Request external
assistance
PST 075-095
ST thermostat tripped
Decrease
Yes
Cooling air high
cooling air tem-
temperature
perature
No
Decrease
Yes
compressed air
quantity tempe-
rature
No
Conden-
Yes
Clean
ser dirty or
condenser
obstructed
No
Replace pressu-
Yes
Low current
Z
re switch
absorption
No
Replace
fan
Z
HP pressure switch
tripped
Yes
Cooling air high
temperature
No
Excessive thermal
Yes
load (inlet air fl ow,
temperature)
No
Yes
Condenser dirty or
obstructed
No
Fan does
Yes
not turn (PV pres-
sure switch fault)
No
Yes
Fan fault
No
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