English
6/6
PSH120-630
7 Troubleshooting
FAULT
CAUSE
REMEDY
Clean
condenser
High dew point re-
frigeration compressor
operating?
ST thermostat tripped
Cooling air high
temperature
Excessive thermal load
(air fl ow, inlet temperature)
Fan pressure
switch (PV)
not set
Replace
pressure
switch
Z
Conden-
ser dirty or
obstructed
Low current
absorption
No
refrigerant
recharge
Z
Low current
absorption
Request external
assistance
Decrease
cooling air tem-
perature
Decrease
compressed air
quantity tempe-
rature
Clean
condenser
Replace pressu-
re switch
Z
Replace
fan
Z
HP pressure switch
tripped
Cooling air high
temperature
Excessive thermal
load (inlet air fl ow,
temperature)
Condenser dirty or
obstructed
Fan does
not turn (PV pres-
sure switch fault)
Fan fault
No
No
No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Lt Low evaporation
temperature alarm Ld
Low dew point alarm.
Low
cooling
air
temperature
Fan
always
working
(PV pressure
switch fault)
Replace
pressure
switch
Z
Hot gas
valve
not calibrated
Calibrate
valve
Z
Increase
cooling air
temperature
No
No
No
Yes
Yes
Yes
High current
absorption
Compressor
noisy
Compressor
components
perished
Condenser dirty or
obstructed
Repair or
replace
compressor
Z
Compressor
winding with
partial loss of
insulation
No
Yes
No
Yes
Yes
CP
compressor
thermal protection
alarm
Th
e compressor
works in the oppo-
site direction
invert
the phases
Yes
No
Compressor
fault
Yes
Summary of Contents for Polestar-HP Smart PSH120
Page 2: ......
Page 28: ...8 5 EXPLODED DRAWING 8 PSH120 630 A B E D C 12 15 B3 4 5 1 8 3 9 2 B1 34 PSH 120 230 Ac ...
Page 29: ...8 5 EXPLODED DRAWING 9 PSH120 630 B A E D C 34 15 12 9 B3 1 2 2 3 8 4 5 B1 4 5 PSH 290 460 Ac ...
Page 31: ...8 6 DIMENSIONAL DRAWING 11 PSH120 630 34 15 9 B3 B E D C A 2 8 1 4 4 5 5 F G 22 B1 PSH 460 Wc ...
Page 33: ...8 6 DIMENSIONAL DRAWING 13 PSH120 630 PSH 120 230 Ac ...
Page 34: ...8 6 DIMENSIONAL DRAWING 14 PSH120 630 PSH 290 460 Ac ...
Page 35: ...8 6 DIMENSIONAL DRAWING 15 PSH120 630 PSH 630 Ac ...
Page 36: ...8 7 REFRIGERANT CIRCUIT 16 PSH120 630 PSH 290 460 Wc ...
Page 37: ...8 7 REFRIGERANT CIRCUIT 17 PSH120 630 PSH 630 Wc ...
Page 38: ...8 7 REFRIGERANT CIRCUIT 18 PSH120 630 PSH 120 230 Ac ...
Page 39: ...8 7 REFRIGERANT CIRCUIT 19 PSH120 630 PSH 290 460 Ac ...
Page 40: ...8 7 REFRIGERANT CIRCUIT 20 PSH120 630 PSH 630 Ac ...
Page 41: ...8 7 REFRIGERANT CIRCUIT 21 PSH120 630 PSH 490 460 Wc ...
Page 42: ...8 7 REFRIGERANT CIRCUIT 22 PSH120 630 PSH 630 Wc ...
Page 43: ...8 8 WIRING DIAGRAM 23 PSH120 630 Sheet 1 of 6 PSH 120 230 Ac ...
Page 44: ...8 8 WIRING DIAGRAM 24 PSH120 630 Sheet 2 of 6 PSH 120 230 Ac ...
Page 45: ...8 8 WIRING DIAGRAM 25 PSH120 630 Sheet 3 of 6 PSH 120 230 Ac ...
Page 46: ...8 8 WIRING DIAGRAM 26 PSH120 630 Sheet 4 of 6 PSH 120 230 Ac ...
Page 47: ...8 8 WIRING DIAGRAM 27 PSH120 630 Sheet 5 of 6 PSH 120 230 Ac ...
Page 48: ...8 8 WIRING DIAGRAM 28 PSH120 630 Sheet 6 of 6 PSH 120 230 Ac ...
Page 49: ...8 8 WIRING DIAGRAM 29 PSH120 630 Sheet 1 of 6 PSH 290 630 Ac ...
Page 50: ...8 8 WIRING DIAGRAM 30 PSH120 630 Sheet 2 of 6 PSH 290 630 Ac ...
Page 51: ...8 8 WIRING DIAGRAM 31 PSH120 630 Sheet 3 of 6 PSH 290 630 Ac ...
Page 52: ...8 8 WIRING DIAGRAM 32 PSH120 630 Sheet 4 of 6 PSH 290 630 Ac ...
Page 53: ...8 8 WIRING DIAGRAM 33 PSH120 630 Sheet 5 of 6 PSH 290 630 Ac ...
Page 54: ...8 8 WIRING DIAGRAM 34 PSH120 630 Sheet 6 of 6 PSH 290 630 Ac ...
Page 55: ...8 8 WIRING DIAGRAM 35 PSH120 630 Sheet 1 of 6 PSH 290 630 Wc ...
Page 56: ...8 8 WIRING DIAGRAM 36 PSH120 630 Sheet 2 of 6 PSH 290 630 Wc ...
Page 57: ...8 8 WIRING DIAGRAM 37 PSH120 630 Sheet 3 of 6 PSH 290 630 Wc ...
Page 58: ...8 8 WIRING DIAGRAM 38 PSH120 630 Sheet 4 of 6 PSH 290 630 Wc ...
Page 59: ...8 8 WIRING DIAGRAM 39 PSH120 630 Sheet 5 of 6 PSH 290 630 Wc ...
Page 60: ...8 8 WIRING DIAGRAM 40 PSH120 630 Sheet 6 of 6 PSH 290 630 Wc ...