
Si39-303
Before Operation
Installation Manual
193
Remote controller displays an error:
Temperature adjustment operation confirmation
!
After the test run is over, operate the unit normally. (Heating is not possible if the outdoor
temperature is 24°C or higher.)
• Make sure the indoor and outdoor units are operating normally (If a knocking sound can
be heard in the liquid compression of the compressor, stop the unit immediately and then
energize the heater for a sufficient length of time before restarting the operation.)
• Run each indoor unit one at a time and make sure the corresponding outdoor unit is also
running.
• Check to see if cold (or hot) air is coming out of the indoor unit.
• Press the fan direction and fan strength buttons on the indoor unit to see if they operate
properly.
Caution
<Cautions for normal operation check>
!
Once stopping, the compressor will not restart in about 5 minutes even if the Run/Stop
button of an indoor unit in the same system is pressed.
!
When the system operation is stopped by the remote controller, the outdoor units may
continue operating for further 5 minutes at maximum.
!
If the system has not undergone any check operation by the test operation button since it
was first installed, an error code “U3” is displayed. In this case, perform check operation
referring to
“8-2 Test run”.
!
After the test run, when handing the unit over to the customer, make sure the electric box lid,
the service lid, and the unit casing are all attached.
Installation error
Malfunction
code
Remedial action
The shutoff valve of an indoor
unit is left closed.
E3 E4
F3 UF
Check referring to the table in “
6-6 Additional
Refrigerant Charge
”.
The phases of the power to
the outdoor units are
reversed.
U1
Exchange two of the three phases (L1, L2, L3) to make
a positive phase connection.
No power is supplied to an
outdoor or indoor unit
(including phase
interruption).
U1
U4
Check if the power wiring for the outdoor units are
connected correctly.
(If the power wire is not connected to L2 phase, no
malfunction display will appear and the compressor will
not work.)
Incorrect interconnections
between units
UF
Check if the refrigerant line piping and the unit wiring
are consistent with each other.
Refrigerant overcharge
E3
F6
UF
Recalculate the required amount of refrigerant from the
piping length and correct the refrigerant charge level by
recovering any excessive refrigerant with a refrigerant
recovery machine.
Insufficient refrigerant
E4
F3
Check if the additional refrigerant charge has been
finished correctly.
Recalculate the required amount of refrigerant from the
piping length and add an adequate amount of
refrigerant.
Содержание VRV II Series
Страница 6: ...Si39 303 iv Table of Contents...
Страница 31: ...Si39 303 Installation General Information 25 Flaring Procedure...
Страница 124: ...Appendix Si39 303 118 General Information 3P114237A...
Страница 130: ...Appendix Si39 303 124 General Information BHFP22M135 Refer P 120 for Table 7 8 and 9 After connection piping...
Страница 140: ...Appendix Si39 303 134 General Information 7 10 Piping System Diagrams 7 10 1 Outdoor Unit RXYQ5MY1B...
Страница 141: ...Si39 303 Appendix General Information 135 RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B 4D040338A...
Страница 142: ...Appendix Si39 303 136 General Information RXYQ14MY1B RXYQ16MY1B 4D040339A...
Страница 144: ...Appendix Si39 303 138 General Information 7 11 Wiring Diagrams 7 11 1 Outdoor Unit RXYQ5MY1B...
Страница 145: ...Si39 303 Appendix General Information 139 RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B 3D038582...
Страница 146: ...Appendix Si39 303 140 General Information RXYQ14MY1B RXYQ16MY1B 3D038058...
Страница 147: ...Si39 303 Appendix General Information 141 7 11 2 Field Wiring RXYQ5 16MY1B 3D040746...
Страница 148: ...Appendix Si39 303 142 General Information RXYQ18 32MY1B 3D040747...
Страница 149: ...Si39 303 Appendix General Information 143 RXYQ34 48MY1B 3D040748...
Страница 158: ...Appendix Si39 303 152 General Information...
Страница 180: ...Refrigerant Piping Si39 303 174 Installation Manual...
Страница 226: ...Troubleshooting Si39 303 220 Operation Manual...