27
9.1
POSSIBLE ALARM SIGNALS AND THEIR RECTIFICATION
9.1.1
CONTROLLER TYPE
”
A
Ü
(PCGE 11 TO PCGE 28; PCGEZ 08)
No.
Device
status
Alarm
code
Alarm de-
scription
Possible cause
Recommended remedy
Fault rectifi-
cation (*)
1
Pump is
working, fan
and com-
pressor are
not working
/
Refrigerant high
pressure alarm
Ambient temperature too
high
Decrease ambient temperature,
increasing ventilation of the room,
removing heat sources or repair-
ing the unit from the direct rays of
sun
M
after reset
high pressure
switch using
button on it if
present
Dirty condenser
Clean the condenser as described
in maintenance
Fan is not working fine or
the sense of rotation is not
correct
Check fuse of the fan, and right
rotation
Required cooling capacity
is higher than nominal
Decrease the required cooling ca-
pacity
Air filter dirty (only for units
with this kind of option)
Dismount the filter from the unit
and clean it with air or with water
OFF
Unit is in Off by
remote ON/OFF
Remote ON/OFF contact is
open or internal bridge re-
moved
Check bridge ROO and close the
contact
A
OFF
Unit in stand by
The unit is energized but
not switched on
Follow procedure to start up the
unit using button on contoller
LA2
Antifreeze
alarm
Set point is too low for ac-
tual system
If possible increase set point, or
check combination of flow, tem-
perature and antifreeze percent-
age
Liquid flow too low
Check right rotation of pump and
possible obstruction on liquid cir-
cuit
Dirty evaporator
Clean evaporator and in case con-
tact service
P1
Sensor SL de-
fective
Probe can be defective or
not well connected
Check connection and in case
change probe
HA
High liquid tem-
perature alarm
Compressor switched off
by internal protection
Contact a technician
2
Pump is not
working, fan
and com-
pressor are
working
Pump is
blocked
The gear of the pump is
blocked by dusty or corro-
sion
Try to move the axe of the pump
and after that switch on again
A
The motor of the pump is
internally protected
Switch off the unit for one hour
and try again after check the axe
is not blocked and there are no
liquid obstruction
3
Pump, fan
and com-
pressor are
not working
LA2
Antifreeze
alarm
Liquid flow too low
Check no. 2 for pump problem
A
4
Pump, fan
and com-
pressor are
working
HA
High liquid tem-
perature alarm
Ambient temperature too
high
Decrease ambient temperature,
increasing ventilation of the room,
removing heat sources or repair-
ing the unit from the direct rays of
sun
A
Dirty condenser
Clean the condenser as described
in maintenance
Fan is not working fine or
the sense of rotation is not
correct
Check fuse of the fan (if pre-
sents), and right rotation
Required cooling capacity
is higher than nominal
Decrease the required cooling
capacity
Unit low on refrigerant
Check liquid sight glass (if pre-
sent) and in case contact service
Air filter dirty (only for unity
with this kind of option)
Dismount the filter from the unit
and clean it with air or with water
LA
Low liquid tem-
perature
Ambient temperature too
low is decreasing liquid
temperature
The unit have to work in ambient
condition as specified in this
manual
P2
Sensor SA de-
fective
Probe can be defective or
not well connected
Check connection and in case
change probe
(*)
A
After fault rectification, system is automatically restored to standard setting
“
M
Alarm function restored by settings made on the
control unit, procedure as described below.
Summary of Contents for OCGE 111
Page 69: ...69 11 2 WIRING DIAGRAM MODELS PCGE 11 to PCGE 25 PCGEZ 08 230V 1Ph 50Hz POWER COMMAND DIAGRAM ...
Page 70: ...70 MODEL PCGE 28 230V 1Ph 50Hz POWER COMMAND DIAGRAM ...
Page 71: ...71 MODEL PCGE 28 400V 3Ph 50Hz POWER COMMAND DIAGRAM ...
Page 72: ...72 MODELS PCGE 31 to PCGE 41 OCGE 31 to OCGE 41 230V 1Ph 50Hz POWER SECTION ...
Page 73: ...73 MODELS PCGE 31 to PCGE 41 OCGE 31 to OCGE 41 230V 1Ph 50Hz COMMAND SECTION ...
Page 78: ...78 MODELS PCGE 590 to PCGE 3300 PCGEZ 360 to PCGEZ 480 400V 3Ph 50Hz ...
Page 79: ...79 ...
Page 80: ...80 ...
Page 81: ...81 ...
Page 86: ...86 MODEL PCGE 1100 with tank and pump MODEL PCGE 1300 with tank and pump ...
Page 87: ...87 MODEL PCGE 1900 2200 with tank and pump MODEL PCGE 2900 3300 with tank and pump ...
Page 91: ...91 MODEL PCGE 1100 without tank MODEL PCGE 1300 without tank ...
Page 92: ...92 MODEL PCGE 1900 2200 without tank MODEL PCGE 2900 3300 without tank ...
Page 97: ...97 710 1789 00 00 02B 轜 07 05 2008 ...
Page 166: ...69 11 2 WIRING DIAGRAM MODELS PCGE 11 to PCGE 25 PCGEZ 08 230V 1Ph 50Hz POWER COMMAND DIAGRAM ...
Page 167: ...70 MODEL PCGE 28 230V 1Ph 50Hz POWER COMMAND DIAGRAM ...
Page 168: ...71 MODEL PCGE 28 400V 3Ph 50Hz POWER COMMAND DIAGRAM ...
Page 169: ...72 MODELS PCGE 31 to PCGE 41 OCGE 31 to OCGE 41 230V 1Ph 50Hz POWER SECTION ...
Page 170: ...73 MODELS PCGE 31 to PCGE 41 OCGE 31 to OCGE 41 230V 1Ph 50Hz COMMAND SECTION ...
Page 175: ...78 MODELS PCGE 590 to PCGE 3300 PCGEZ 360 to PCGEZ 480 400V 3Ph 50Hz ...
Page 176: ...79 ...
Page 177: ...80 ...
Page 178: ...81 ...
Page 183: ...86 MODEL PCGE 1100 with tank and pump MODEL PCGE 1300 with tank and pump ...
Page 184: ...87 MODEL PCGE 1900 2200 with tank and pump MODEL PCGE 2900 3300 with tank and pump ...
Page 188: ...91 MODEL PCGE 1100 without tank MODEL PCGE 1300 without tank ...
Page 189: ...92 MODEL PCGE 1900 2200 without tank MODEL PCGE 2900 3300 without tank ...