Troubleshooting by Error Code
SiUS342303E
249
Part 6 Service Diagnosis
3.4 External Protection Device Abnormality
3.4.1 External Protection Device Abnormality
Applicable
Models
All indoor unit models
Error Code
A0
Method of Error
Detection
Detects open or short circuit between external input terminals in indoor unit.
Error Decision
Conditions
When an open circuit occurs between external input terminals with the remote controller set to
"external ON/OFF terminal".
Supposed
Causes
Activation of external protection device
Improper field setting
Defective indoor unit control PCB
Troubleshooting
ON/OFF
inp
u
t from
o
u
tdoor (mode No. 12,
first code No. 1) has
b
een
set to external protection de
v
ice
inp
u
t (second code No.
03)
b
y remote
controller.
Check the setting state of the
external ON/OFF inp
u
t
b
y
remote controller.
External
protection de
v
ice
is connected to T1 and T2
of the indoor
u
nit
terminal.
Replace the indoor
u
nit control
PCB (A1P).
Acti
v
ation of external protection
de
v
ice.
Change the second code No. to
01
or
02
.
YES
NO
NO
YES
Caution
Be s
u
re to t
u
rn off the power switch
b
efore connecting or disconnecting
connectors, or parts may
b
e damaged.
Summary of Contents for VRV EMERION RXYQ-AATJA
Page 1: ...Service Manual Heat Pump 60 Hz RXYQ AATJA 208 230 V RXYQ AAYDA 460 V SiUS342303E...
Page 410: ...Wiring Diagrams SiUS342303E 403 Part 7 Appendix FXEQ07 09 12 15 18 24PVJU 3D098557A...
Page 411: ...SiUS342303E Wiring Diagrams Part 7 Appendix 404 FXDQ07 09 12 18 24MVJU C 3D050501C...
Page 416: ...Wiring Diagrams SiUS342303E 409 Part 7 Appendix FXHQ12 24 36MVJU 3D048116C...
Page 417: ...SiUS342303E Wiring Diagrams Part 7 Appendix 410 FXAQ07 09 12 18 24PVJU 3D075354F...
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