Refrigerant Leak Detection System - Daikin VRV 5 REYA8A7Y1B Installer And User Manual

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

REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P687640-1 – 2022.07
Cause
Auto address malfunction
(inconsistency)
Maintenance warning (ventilation
fan)
Leak detection function related error codes
Unit is not prepared to execute
leak detection operation
Indoor unit is out of temperature
range 20~32°C for leak detection
operation.
Outdoor unit is out of
temperature range 4~43°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
a Heat recovery outdoor unit
b Branch selector (BS)
c Refrigerant piping
d VRV direct expansion (DX) indoor unit
e Remote controller in normal mode
Solution
Check if transmission wired unit
amount matches with powered
unit amount (by monitor mode) or
wait till initialisation is finished.
BS unit ventilation needs
maintenance check. Refer to the
BS unit manual for more
information.
Refer to requirements to be able
to execute leak detection
operation.
Retry when ambient conditions
are satisfied.
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
25 Troubleshooting
|
SVEO
c
d
f
Installer and user reference guide
(a) (b)
SVS
167