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During charging in heating mode, a person must manually close
valve A and stop operation.
Beforehand, check the remaining refrigerant that is needed to
charge based on the "additional charging amount" in step 2 and
the charged amount in step 3.
• The refrigerant will be charged about 30kg in one hour at outdoor
temp. 30°C DB (about 12kg at outdoor temp. 0°C DB).
(The charging speed of refrigerant may increase depending on
the quantity of remaining refrigerant in the tank or outdoor tem-
perature.)
• During Automatic refrigerant charging operation, you can stop the
operation forcedly by pushing MODE button (BS1).
• The marks of LED mean as follows.
h
i
j
: OFF
: ON
: Blinking
(1) Open the shutoff valves of the liquid pipe and gas pipe, and shut-
off valve of equalizer pipe (in the case of the multi outdoor unit
system). (The valve A to C must be closed. See figure 34.)
(2) • Close the EL. COMPO. BOX lid and all front panel except on
the EL. COMPO. BOX side. (*1) And turn the power to the out-
door unit, function unit and all connected indoor units. (*2)
• After H2P stop blinking (about 12 minutes after turning on the
power), check H2P is OFF.
If H2P is ON, check the malfunction code in the remote control-
ler of indoor unit and correct the malfunction in accordance with
[Remote controller display malfunction code] in chapter 9-3.
Note
All operation is done through outdoor unit (in case of multi out-
door unit system, master unit)
Distinguish the master and slave of the multi outdoor unit sys-
tem through the state of the H8P (MULTI) LED indicators.
i (ON) .............................................................. Master
j (Blinking) or h (OFF) .................................... Slave
Furthermore, the master and slave can be distinguished by
checking whether the transmission wire to the indoor unit is
connected or not.
Transmission wire is connected......................... Master
Transmission wire is not connected................... Slave
(3) Check the LED. And push the MODE button (BS1) once if the LED
displays is not as below.
H1P H2P H3P H4P H5P H6P H7P
h
h
i
h
h
(4) Push the TEST button (BS4) once. (The LED displays will change
as below.)
H1P H2P H3P H4P H5P H6P H7P
i
i
i
i
i
(5) Hold the TEST button (BS4) down for 5 seconds or more.
(The LED displays will change as below and fan of outdoor unit
will start rotation.)
H1P H2P H3P H4P H5P H6P H7P
h
j
h
h
h
(6) When the compressor start working and the LED displays change
any state in below (*3), go to "In case of cooling mode" or "In case
of heating mode" in accordance with the LED displays.
H1P H2P H3P H4P H5P H6P H7P
j
j
j
h
i
j
j
h
h
i
19
∗
: OFF, ON or Brinking
h
h
i
i
∗
∗
Go to "In case of
h
i
cooling mode"
Go to "In case of
h
i
heating mode"
In case of cooling mode
(7) Push the TEST button (BS4) once within 5 minutes after proce-
dure (6) (*4) and close the all front panels (*5).
After that, open the valve A immediately (See figure 34) (*6) and
watch the remote controller display of indoor unit.
(8) If the remote controller display shows "PE" code (*7), ready to
close the valve A.
And go to procedure (9).
If the remote controller display shows other code, close the valve
A immediately and refer to [Remote controller cooling mode mal-
function code]
Beware the fan running when open the front panel.
The fan may continue rotation after the system stop the operation.
(9) When the compressor stop working (the fan may continue rota-
tion.), close the valve A immediately (*8).
And check the LED displays are as below and the remote control-
ler display shows "P9" code.
H1P H2P H3P H4P H5P H6P H7P
i
j
j
i
i
After checking, push the MODE button (BS1) once and the charg-
ing is complete.
In case of heating mode
(7) Push the TEST button (BS4) once within 5 minutes after proce-
dure (6) (*4) and close the all front panels.
After that, open the valve A immediately (See figure 34) (*6) and
check the charged amount by meauring device.
During operation, if the remote controller display shows "P2" or
"P8" code, close the valve A immediately and refer to [Remote
controller heating mode malfunction code].
Beware the fan running when open the front panel.
The fan may continue rotation after the system stop the operation.
(8) When the required amount of refrigerant is charged, close the
valve A (See figure 34) (*8) and push the RETURN button (BS3)
once. And then go to procedure (9).
(9) Push the MODE button (BS1) once, and the charging is complete.
Notes (*1)~(*9)
(*1) Lead the refrigerant charge hose etc from the pipe intake.
All front panels must be closed at the procedure (7).
(*2) • If you perform the refrigerant charging operation within the
refrigerant system that have the power off unit, the operation
cannot finish properly.
Check the number of outdoor and indoor units that is powered.
For checking, see [How to check how many units are con-
nected] in chapter 9-1.
• To energize the crankcase heater, make sure to turn on for
6 hours before starting operation.
(*3) It takes about 2~10 minutes for getting stability of refrigerant
state.
If the additional refrigerant is little and operation is started before
getting stability, the system can not judge the charging amount
precisely and it cause over charge.
(*4) If the TEST button (BS4) is not pushed within 5 minutes, "P2"
code will displayed in the remote controller. In this case, refer
[Remote controller cooling (or heating) mode malfunction code].
(*5) If the front panel is opened during the operation, the system can-
not operate properly.
(*6) If you leave the system without connecting the refrigerant tank or
opening the valve A for 30 minutes or more, the system stop
operation and "P2" code are displayed in remote controller.
In this case, refer [Remote controller cooling (or heating) mode
malfunction code].
(*7) Depending on the situation of operation such as the charging
amount is little, the "PE" code may not be displayed and the "P9"
code may be displayed.
(*8) Always close the valve A and take the tank off.
The refrigerant charge port of this unit have electric expansion
valve and the valve are closed when charging is finished. How-
ever, the valve will opened when ather operation (Check opera-
tion, nomal operation, etc.). If you leave the tank connected, the
refrigerant will charged and it cause over charge.
i
i
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