Daikin VRV 5 RXYA8A7Y1B, Инструкция по установке и эксплуатации

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25 | Troubleshooting
Installer and user reference guide
182
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
Main
code
Sub code Cause Solution SVEO
(a)
SVS
(b)
Master Slave 1
High pressure sensor malfunction
(S1NPH): open circuit - main PCB
(X32A) Check connection on PCB or
actuator.
High pressure sensor malfunction
(S1NPH): short circuit - main PCB
(X32A) Check connection on PCB or
actuator.
Low pressure sensor malfunction
(S1NPL): open circuit - main PCB
(X31A) Check connection on PCB or
actuator.
Low pressure sensor malfunction
(S1NPL): short circuit - main PCB
(X31A) Check connection on PCB or
actuator.
Transmission outdoor unit -
inverter: INV1 transmission trouble
- main PCB (X20A, X28A, X40A) Check connection.
Transmission outdoor unit -
inverter: FAN1 transmission trouble
- main PCB (X20A, X28A, X40A) Check connection.
Transmission outdoor unit -
inverter: FAN2 transmission trouble
- main PCB (X20A, X28A, X40A) Check connection.
Transmission main PCB – sub PCB –
main PCB (X20A), sub PCB (X2A,
X3A) Check connection.
INV1 unbalanced power supply
voltage Check if power supply is within
range.
Reversed power supply phase
malfunction Correct phase order.
Reversed power supply phase
malfunction Correct phase order.
INV1 voltage power shortage Check if power supply is within
range.
INV1 power phase loss Check if power supply is within
range.
Malfunction code: system test run
not yet executed (system operation
not possible) Execute system test run.
An error occurred during the test
run Re-execute the test run.
, Test run aborted Re-execute the test run.
, Test run aborted due to
communication issues Check the communication wires
and re-execute the test run.
Commissioning of SV unit safety
system is not completed Complete commissioning of SV unit
safety system. Refer to SV unit
manual for more information.