18
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Piping installation
Installer and user reference guide
87
RXYSQ4~6T8V/YB
VRV IV-S system air conditioner
4P482277-1B – 2020.10
9
Activate setting [2‑20] to start the manual additional refrigerant charge mode.
For details, see Mode 2: Field settings.
Result:
The unit will start operation.
INFORMATION
The manual refrigerant charge operation will automatically stop within 30 minutes. If
charging is not completed after 30 minutes, perform the additional refrigerant
charging operation again.
INFORMATION
▪
When a malfunction is detected during the procedure (e.g., in case of closed stop
valve), a malfunction code will be displayed. In that case, refer to
87] and solve the malfunction accordingly.
Resetting the malfunction can be done by pushing BS3. You can restart the
"Charging" instructions.
▪
Aborting the manual refrigerant charge is possible by pushing BS3. The unit will
stop and return to idle condition.
10
Open valve A.
11
Charge refrigerant until the remaining determined additional refrigerant
amount is added, and then close valve A.
12
Press BS3 to stop the manual additional refrigerant charge mode.
NOTICE
Make sure to open all stop valves after (pre-) charging the refrigerant.
Operating with the stop valves closed will damage the compressor.
NOTICE
After adding the refrigerant, do not forget to close the lid of the refrigerant charging
port. The tightening torque for the lid is 11.5 to 13.9 N•m.
18.4.5 Error codes when charging refrigerant
INFORMATION
If a malfunction occurs, the error code is displayed on the user interface of the
indoor unit.
If a malfunction occurs, close valve A immediately. Confirm the malfunction code
and take corresponding action,
"24.3 Solving problems based on error
122].
18.4.6 To fix the fluorinated greenhouse gases label
1
Fill in the label as follows:
b
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO
2
eq
GWP × kg
1000
=
=
+
kg
=
kg
=
GWP: XXX
RXXX
a
f
c
d
e