Daikin VRV 5 RXYA8A7Y1B, Инструкция по установке и эксплуатации

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25 | Troubleshooting
Installer and user reference guide
185
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
Leak detection operation
1 If the R32 sensor in the indoor unit detects a refrigerant leak:
- The user will be warned by both audible and visible signals of the remote
controller of the leaking indoor unit (and the supervisor remote controller, if
applicable).
- At the same time the SV unit will close the shut-off valves of the corresponding
branch pipe in order to reduce the amount of refrigerant in the indoor system.
- After the operation, the indoor units of the port where the leak was detected
will be out of operation and display an error. The rest of the system will
continue operation.
2 If the R32 sensor in the indoor unit without a SV unit (directly connected to the
outdoor unit) detects a refrigerant leak:
- All shut off valves in SV units connected to other indoor units will be closed, the
compressor will be shut down and the system cannot operate anymore.
3 If the R32 sensor in the SV unit detects a refrigerant leak:
- The SV unit will close all of its shut-off valves and triggers the ventilation
system (if equipped) of the SV unit to evacuate the leaking refrigerant.
- After the operation, the system will go in locked state and the remote
controllers will display an error. Service is needed to repair the leak and
activate the system. Refer to the service manual for more information.
Feedback of the remote controller after leak detection operation will depend on its
mode.
WARNING
The unit is equipped with a refrigerant leak detection system for safety.
To be effective, the unit MUST be electrically powered at all times after installation,
except for maintenance.
c
h
a
d
e e
d
c c
d
e
f
j
l
i
g
b
k k
d
e k
a Heat pump outdoor unit
b SV unit
c Refrigerant piping
d VRV direct expansion (DX) indoor unit
e Remote controller in normal mode and alarm only mode
f Remote controller in supervisor mode (mandatory in some situations)
g Centralised controller (optional)
h Refrigerant leak
i Outdoor unit error code on 7‑segment display
j Error code 'A0–11' and audible alarm and red warning signal is generated from this
remote controller.
k Error code 'U9–01' is displayed on this remote controller. No alarm or warning
lights.
l Error code 'A0–11' and audible alarm and red warning signal is generated from this
supervisor remote controller. The unit address is displayed on this remote
controller.