Daikin VRV IV+ RYYQ8U7Y1B Series Installer And User Manual page 42

10 | Troubleshooting
Installer and user reference guide
42
Main code
Liquid temperature sensor (after subcool HE) malfunction
(outdoor)
Liquid temperature sensor (coil) malfunction (outdoor)
Gas temperature sensor (after subcool HE) malfunction (outdoor)
High pressure sensor malfunction (S1NPH)
Low pressure sensor malfunction (S1NPL)
INV PCB abnormal
Fin temperature abnormal
Inverter PCB faulty
Compressor over current detected
Compressor lock (startup)
Transmission outdoor unit - inverter: INV transmission trouble
INV unbalanced power supply voltage
Autocharge operation related
Fin thermistor malfunction
Autocharge operation related
Autocharge operation related
Autocharge operation related
Capacity setting malfunction (outdoor)
Abnormal low pressure drop, faulty expansion valve
Reversed power supply phase malfunction
INV voltage power shortage
System test run not yet executed
Faulty wiring indoor/outdoor
Abnormal user interface - indoor communication
Faulty wiring to outdoor/outdoor
Abnormal main-sub user interface communication
System mismatch. Wrong type of indoor units combined. Indoor
unit malfunction.
Connection malfunction over indoor units or type mismatch
Centralised address duplication
Malfunction in communication centralised control device - indoor
unit
Auto address malfunction (inconsistency)
Auto address malfunction (inconsistency)
Contents
4P546228-1C – 2021.11
RYYQ+RYMQ+RXYQ
VRV IV+ heat pump