Parker Polestar-smart PSE460 Manual De Uso página 30

T
7 Troubleshooting
CP
compressor
thermal protection
alarm
High current absorp-
Compressor noisy
Compressor
No
Condenser dirty or
components
obstructed
perished
Yes
The compressor
works in the op-
Yes
posite direction
Yes
No
invert
the phases
Compressor
fault
Yes
Repair or
Yes
Compressor wind-
replace
ing with partial
compressor
loss of insulation
Z
No
English
FAULT
Lt Low evaporation
temperature alarm Ld Low
tion
dew point alarm.
Yes
Clean
Low pressure
condenser
switch fault
Yes
Low
Increase
cooling
cooling air
air
temperature
temperature
No
Replace
Fan
Yes
pressure
always
switch
working
Z
(PV pressure
switch fault)
solenoid valve
No
Hot gas
Yes
valve
not calibrated
Replace
Calibrate
the coil
valve
Z
Z No
REMEDY
CAUSE
LP Low
High dew point re-
pressure alarm
frigeration compressor
operating?
Replace
LP
Yes
pressure
switch
Z
No
Excessive thermal load
(air fl ow, inlet temperature)
No
Replace
Fan pressure
Yes pressure
switch (PV) not
set
No
Liquid line
closed
Yes
No
Request external
assistance
PSE 460-1800
Decrease cool-
ing air tempera-
Decrease
Yes
compressed air
quantity tempera-
No
Condenser
Yes
dirty or ob-
condenser
switch
structed
Z
No
Replace pressure
switch
Replace fan
Z
HP pressure switch
tripped
Yes
Cooling air high
temperature
ture
No
Excessive thermal
Yes
load (inlet air fl ow,
temperature)
ture
No
Yes
Clean
Condenser dirty or
obstructed
No
Fan does
Yes
not turn (PV pres-
Z
sure switch fault)
No
Yes
Fan fault
No
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