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Refrigerant
Vacuum
Cylinder
pump
High pressure side
pressure port
Low pressure side
pressure port
Liquid pressure side
pressure port
Pressure port dedicated
to refrigerant auto charge
(Pipe cover color: Brown)
Liquid side
service vale
Gas side
service vale
081*~141*
Automatic charge set up procedure
Please warm cylinder when 7-segment [B] starts flashing if need (No.
No.
Confirmation procedure
Fully open the valves of the outdoor unit at liquid and gas sides.
1
Outdoor center unit I/F rotary switch initial setting is described on
2
the right.
Turn the rotary switch SW01 and SW02 clockwisely to set as
3
described on the right.
Press SW04 more than 10 seconds system starts cooling, then
4
described on the right displayed on 7-segment [B] as [0 0 0]. After
system starts running, 7-segment [B] displays elapsed time per
minute.
Automatic refrigerant charging starts after about 5 minutes passed
5
from system running and 7-segment [A] starts flashing.
Remote controller displays "test" and no command will be permitted.
6
When refrigerant cylinder become empty during refrigerant charge,
7
keep the system running and change the refrigerant cylinder to
new one.
Center unit
Terminal unit
High pressure side
pressure port
Low pressure side
pressure port
Liquid pressure side
pressure port
Pressure port dedicated
to refrigerant auto charge
(Pipe cover color: Brown)
Liquid side
service vale
Gas side
service vale
14A*~261*
).
5
Rotary switch
7-segment
SW01
SW02
SW03 display[A]
display[B]
1
1
1
[U . 1]
[... ...]
2
10
1
[C. S]
[... ...]
[0 0 0]
↓
[passed time]
No.
Confirmation procedure
When automatic refrigerant is finished, then 7-segment [B] indicate
8
[End] and [passed time].
Turn back the rotary switch to initial setting.
9
Close the cylinder valve and remove the charge hose from
!
refrigerant charge port.
Shut the refrigerant charge port and service panel on the right side.
Refrigerant charging start from about 5 minutes later after system have been moved. If the refrigerant charged
before 5 minutes passed, stop system and check the list below.
• Check connection and installation of charging hose. Make sure that charging hose is properly connected to the
charging port.
Check code of automatic refrigerant charging
Automatic refrigerant check code
Check
Check code
Cause of system
code
name
disengage
[in. E]
Indoor unit
Indoor unit stop
error
[t c 1]
Indoor heat
exchanger
frost
[b u p]
Compressor
Set to back up mode
back up
[E r r]
Prohibited
Prohibited condition
condition
[o i L]
Low oil level
Operating compressor
protection
detects continuous state
of low oil level
•
[S t P]
Automatic
Automatic refrigerant
refrigerant
charge time over 120
[1 2 0]
charge
minutes (24 HP or under)
overtime
•
[S t P]
Automatic refrigerant
charge time over 180
[1 8 0]
minutes (26 HP or above)
[□ □ □]
Outdoor unit
Outdoor unit stop
other than
error
above
codes
※ • Amount of charging refrigerant is large, it may take longer than 120 or 180 minutes. If any problem cannot be
confirmed, then please start the automatic charge again.
• The charging time will continue counting even the cylinder unable to charge the refrigerant due to less gas
pressure (the amount of refrigerant inside cylinder is empty or little).
If the cylinder weight did not change latest 10 minutes, please change to new cylinder.
– 38 –
Rotary switch
SW01
SW02
SW03 display[A]
[C . E]
1
1
1
[U . 1]
Supplementary information
Check items (locations)
How to stop automatic
1
refrigerant charge.
•
Check code detection of indoor unit
Press outdoor center unit I/F
rotary SW05 switch more than
•
Check connection of indoor unit PMV
10 seconds
sensors connector and wiring.
2
When the system stop
•
Check indoor temperature
automatically.
•
Automatic refrigerant charge is prohibited in
System may stop because of
back up mode
protective action, but system
•
Prohibited to do automatic refrigerant
will restart 150 seconds later.
charge when fresh air intake indoor unit type
When the 7-segment [B]
3
is installed
display the check code on
•
the left.
Check connection and installation of TK1
and TK2 sensors.
Look at the check items and
•
Check resistance characteristics of TK1 and
see something is wrong with
TK2 sensors.
the system.
•
Check for gas or oil leak in same line.
When you restart automatic
•
Check for refrigerant problem inside
charge, look at automatic
compressor casing.
•
charge setting up procedure
Check SV3D, SV3F valves for failure.
•
Check oil return circuit of oil separator for
again.
clogging.
•
Check oil equalizing circuit for clogging.
•
Check the refrigerant cylinder valve is open.
•
Check the refrigerant cylinder is empty.
•
Check connection of PMV4 sensors
connector and wiring.
•
Check the outdoor unit check codes.
7-segment
display[B]
[E n d]
↓
[passed time]
[... ...]
EN
EN
EN
ID
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