Parker Hiross Polestar-Smart Series User Manual page 13

7 Troubleshooting
High current absorption
Compressor noisy
Compressor
No
Condenser dirty or
components
obstructed
perished
Yes No
Repair or
Compressor wind-
Yes
replace
ing with partial loss
compressor
of insulation
Z
No
English
FAULT
Low dew point
Yes
Clean Yes
Low cooling air
condenser
temperature
No
Replace
pressure
Yes
Fan always work-
switch
ing (PV pressure
Z
switch fault)
No
Calibrate
Yes
Hot gas valve not
valve
calibrated
Z
No
REMEDY
CAUSE
High dew point
refrigeration compressor
operating?
Increase
cooling air
temperature
Excessive thermal load
(air fl ow, inlet temperature)
No
Replace
Fan pressure
Yes pressure
switch (PV) not
switch
set
Z
No
No
Yes
Low current refrigerant
recharge
absorption
Z
No
Request external
assistance
PSH 030-090
ST thermostat tripped
Decrease
Yes
Cooling air high tem-
cooling air tem-
perature
perature
No
Decrease
Yes
compressed air
quantity tempera-
ture
No
Condenser
Yes
Clean
dirty or ob-
condenser
structed
No
Replace pres-
Yes
Low current Z
sure 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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