Daikin VRV 5 RXYA8A7Y1B Installer And User Manual page 179

Main Sub code
code
Master Slave 1
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
Cause
R32 sensor malfunction in one of
(c)
the indoor units
R32 sensor end of lifetime in one of
(c)
the indoor units
R32 sensor end of
lifetime<6 months in one of the
(c)
indoor units
Waiting for indoor unit R32 sensor
(c)
replacement input
Waiting for SV unit replacement
input
R32 sensor malfunction in one of
the SV units
R32 sensor end of lifetime less than
6 months in one of the SV units
R32 sensor end of lifetime in one of
the SV units
Earth leakage detector activated
Earth leakage detector malfunction:
open circuit) - A1P (X101A)
High pressure switch was activated
(S1PH) – main PCB (X2A)
▪ Refrigerant overcharge
▪ Stop valve closed
Stop valve closed (liquid)
▪ Refrigerant overcharge
▪ Stop valve closed
25
Solution
Check connection on PCB or
actuator.
The system will continue operating,
but the indoor unit in scope will
stop operating. Refer to the service
manual for more information.
One of the sensors is at the end of
lifetime and must be replaced.
Refer to the service manual for
more information.
One of the sensors is almost at the
end of lifetime and must be
replaced.
Refer to the service manual for
more information.
Refer to the service manual for
more information.
Refer to the service manual for
more information.
Check connection on PCB or
actuator.
The system will continue operation,
but SV unit in scope will stop
operating. Refer to the service
manual for more information.
One of the sensors is at the end of
lifetime (for CH-22: almost) and
must be replaced.
Refer to the service manual for
more information.
Restart the unit. If the problem
reoccurs, contact your dealer.
Check connection on PCB or
actuator.
Check stop valve situation or
abnormalities in (field) piping or
airflow over air cooled coil.
▪ Check refrigerant
+recharge unit.
▪ Open stop valves
Open liquid stop valve.
▪ Check refrigerant
+recharge unit.
▪ Open stop valves.
Troubleshooting
|
SVEO SVS
(a) (b)
amount
amount
Installer and user reference guide
179