Daikin VRV 5 RXYA8A7Y1B Installation And Operation Manual page 57

Main code Sub code
Master Slave 1
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(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.
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P739915-1 – 2023.12
Cause
Warning because there is an error on another
unit (indoor/SV unit)
Connection malfunction over indoor units or
type mismatch
Connection malfunction over indoor units or
type mismatch
Wrong unit combination (multi system)
Wrong outdoor unit connected
No SV unit connected
Wrong SV unit connected
SV unit refrigerant type abnormality
SV unit DIP switch abnormality
Mismatch between wiring path and piping
path during test run
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
18~29°C for leak detection operation.
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
22 Troubleshooting
Solution
Check if other indoor units/SV units have a
malfunction and confirm if indoor unit mix is
allowed.
Check if other indoor units have a malfunction
and confirm if indoor unit mix is allowed.
Check if other indoor units have a malfunction
and confirm if indoor unit mix is allowed.
Check if unit types are compatible.
Disconnect the outdoor unit.
Connect a SV unit.
Disconnect the SV unit.
Check SV unit refrigerant type
Check the DIP switches of the SV unit.
Mistake detected during SV unit and indoor
unit connection check (see "19.6 To perform
check" [ 4 51]).
a SV/indoor unit connection
Confirm wiring between indoors and SV units.
Refer to SV unit manual for correct way of
wiring.
Check if interconnected unit amount matches
with powered unit amount (by monitor mode)
or wait until initialisation is finished.
SV unit ventilation needs maintenance check.
Refer to the SV 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.
Installation and operation manual
SVEO SVS
(a) (b)
57