RXYSQ4~Y1B
VRVIII-S System air conditioner
4PW68122-1 – 02.2011
Installation manual
17
Case 4: Failure
After correcting the problem, press
button once and
perform automatic refrigerant charging again starting from
step
4.2
.
5
When charging is complete, determine the weight of refrigerant
that was added and fill in the amount in the "Additional
refrigerant charge label" attached to service precautions plate
on the unit.
6
After adding the refrigerant, do not forget to close the lid of the
service port. The tightening torque for the lid is 11.5~13.9 N•m.
Procedure 2: Charging while the outdoor unit is at a standstill
See
figure 6
for Sky Air or room air conditioner applications or
figure 7
for VRV applications.
1
Determine the weight of refrigerant to be charged additionally
referring to the item "Additional refrigerant charge" in
"How to
calculate the additional refrigerant to be charged" on page 12
for
Sky Air or room air conditioner applications or
"How to calculate
the additional refrigerant to be charged" on page 13
for VRV
applications, and fill in the amount in the "Additional refrigerant
charge label" attached to the unit.
2
After the vacuum drying is finished, open valve A and charge the
additional refrigerant in its liquid state through the liquid stop
valve service port taking into account following instructions:
-
Turn on the power of the outdoor unit and indoor units.
-
Check that gas and liquid stop valves are closed.
-
Stop the compressor and charge the specified weight of
refrigerant.
Procedure 3: Charging while the outdoor unit is operating
See the figure in
"How to connect the tank?" on page 15
.
1
Close the front panel and turn on the power to all indoor units
and the outdoor unit.
2
Completely open the gas side stop valve and liquid side stop
valve. Valve A must be left fully closed.
3
Open valve A immediately after starting of the compressor.
4
Charge the additional refrigerant in its liquid state through the
service port of the liquid line stop valve.
5
While the unit is at a standstill and under setting mode 2 (refer to
"11.2. Checks before initial start-up" on page 22
,
"Setting the
mode" on page 22
), set the required function A (additional
refrigerant charging operation) to
(ON). Then operation
starts. The blinking H2P led indicates test operation and the
remote controller indicates
(test operation) and
(external control).
6
When the specified amount of refrigerant is charged, push the
button. Then operation stops.
■
The operation automatically stops within 30 minutes.
■
If the refrigerant charge cannot be finished within 30 minutes,
repeat step
5
.
■
If the operation stops immediately after restart, there is a
possibility that the system is overcharged.
The refrigerant cannot be charged more than this amount.
7
After the refrigerant charge hose is removed, make sure to close
valve A.
H1P
H2P
H3P
H4P
H5P
H6P
H7P
Error code on remote
controller
x w w x
x
x
x
See footnote
(*)
(*)
An error in the system interrupted the operation of the unit. Check the
error by using the error code displayed on the remote controller. For an
explanation of the error codes, see
"Error codes on the remote controller"
on page 24
and solve the problem.
1
Service port for adding refrigerant
2
Liquid line stop valve
3
Gas line stop valve
4
Pipe fixing plate
BS1 MODE
1
2
3
2
4
3
V1
Y1
■
To avoid compressor breakdown. Do not charge the
refrigerant more than the specified amount.
■
If the total refrigerant cannot be charged while the
outdoor unit is at a standstill, it is possible to charge
the refrigerant by operating the outdoor unit using the
refrigerant charge function (refer to
"Setting mode 2"
on page 23
) and follow
"Procedure 3: Charging while
the outdoor unit is operating" on page 17
.
ON
BS3 RETURN
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