Symptom-based Troubleshooting
SiUS341802E
153
Service Diagnosis
Notes:
∗
1. The system can keep operating, however, be sure to check and repair.
∗
2. The system may or may not continue operation depending on the conditions.
Outdoor Unit
J9
l
Subcooling heat exchanger gas pipe thermistor (R6T) abnormality
Receiver gas purge thermistor (R13T) abnormality
JA
l
High pressure sensor abnormality
JC
l
Low pressure sensor abnormality
L1
l
Inverter PCB abnormality
L2
l
Momentary power failure during test operation
L3
l
Reactor temperature rise abnormality
L4
l
Inverter radiation fin temperature rise abnormality
L5
l
Inverter compressor instantaneous overcurrent
L8
l
Inverter compressor overcurrent
L9
l
Inverter compressor startup abnormality
LC
l
Transmission error between inverter PCB and outdoor unit main PCB
P1
l
Power supply voltage imbalance
P3
l
Reactor surface thermistor abnormality
P4 (
∗
1)
l
Inverter radiation fin temperature abnormality
PJ
l
Field setting after replacing outdoor unit main PCB abnormality or combination
of PCB abnormality
System
U0 (
∗
1)
k
Refrigerant shortage
U1
l
Reverse phase, open phase
U2
l
Power supply insufficient or instantaneous abnormality
U3
l
Check operation not executed
U4
l
Transmission error between indoor units and outdoor units
U5
l
Transmission error between remote controller and indoor unit
U7
l
Transmission error between outdoor units
U8
l
Transmission error between main and sub remote controllers
U9
l
Transmission error between indoor and outdoor units in the same system
UA
l
Improper combination of indoor and outdoor units, indoor units and remote
controller
Incorrect electric heater capacity setting
UC (
∗
1)
k
Address duplication of centralized control equipment
UE
l
Transmission error between centralized control equipment and indoor unit
UF
l
System not set yet
UH
l
System abnormality, refrigerant system address undefined
k
: ON
h
: OFF
l
: Blink
Error code
Operation
lamp
Error contents
Reference
page
Summary of Contents for Aurora Series
Page 317: ...SiUS341802E Wiring Diagrams Appendix 304 RXLQ96 120TATJU 2D112581A ...
Page 318: ...Wiring Diagrams SiUS341802E 305 Appendix RXLQ72TAYDU 2D112582A ...
Page 319: ...SiUS341802E Wiring Diagrams Appendix 306 RXLQ96 120TAYDU 2D112583A ...
Page 331: ...SiUS341802E Wiring Diagrams Appendix 318 VAM1200GVJU 3D073270C ...
Page 332: ...Revision History Month Year Version Revised contents 04 2018 SiUS341802E First edition ...