Refrigerant Leak Detection System - Daikin VRV 5 RXYA8A7Y1B Installer And User Manual

25 | Troubleshooting
Main Sub code
code
Master Slave 1
—
—
—
(a)
The SVEO terminal provides an electrical contact that closes in case the indicated error occurs.
(b)
The SVS terminal provides an electrical contact that closes in case the indicated error occurs.
(c)
The error code is only shown on the user interface of the indoor unit where the error occurs.

25.4 Refrigerant leak detection system

Installer and user reference guide
184
Cause
Outdoor unit is out of temperature
range -7~48°C for leak detection
operation.
Too low pressure was noticed
during leak detection operation
Indicates an indoor unit which is
not compatible with leak detection
functionality is installed
Normal operation
During normal operation, the alarm only and supervisor remote controller have no
functionality. The screen of the remote controller in alarm only and supervisor
mode will be off. Operation of the remote controller can be checked by pushing
the button to open the installer menu.
a
b
h
d
e
a Heat pump outdoor unit
b SV unit
c Refrigerant piping
d VRV direct expansion (DX) indoor unit
e Remote controller in normal mode
f Remote controller in alarm only mode
g Remote controller in supervisor mode (mandatory in some situations)
h Centralised controller (optional)
Note: During start-up of the system, the mode of the remote control can be
verified from the screen.
Solution
Retry when ambient conditions are
satisfied.
Restart leak detection operation.
Use VRV R32 compatible indoor
units, see engineering databook for
unit selection.
c c
d d
e e
g
SVEO
(a)
c
d
f
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
SVS
(b)