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Troubleshooting by Error Code
SiUS331708EA
161
Service Diagnosis
4.4.1 External Protection Device Abnormality (FXTQ-TA and CXTQ-TA Only)
Error Code
A0-01
Applicable
Models
FXTQ-TA, CXTQ-TA
Method of Error
Detection
Detect open or short circuit between external input terminals in indoor unit.
Error Decision
Conditions
When an open circuit occurs between external input terminals.
Supposed
Causes
Actuation of external protection device
Defective indoor unit PCB
Indoor unit fuse blown
24 VAC power is not supplied to TH2 and TR2 terminals (FXTQ-TA) or R and C terminals
(CXTQ-TA) on the indoor unit PCB.
Troubleshooting
Fuse (F1U)
is blown.
24 VAC
power is supplied
to TH2 and TR2
terminals (FXTQ-TA) or R
and C terminals
(CXTQ-TA).
Ex
ternal
protection device
is connected to TB4 and
TB5 of the indoor unit
terminal.
The
external protection
device is opened.
Replace the indoor unit PCB.
Confirm that wiring follows
the wiring diagram and then
supply power to each
terminal.
Actuation of external protection
device.
Replace the fuse (F1U).
YES
YES
NO
NO
NO
NO
YES
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Summary of Contents for RXSQ24TAVJU
Page 1: ...Service Manual SiUS331708EA RXSQ24 36 48 60TAVJU Heat Pump 60 Hz...
Page 290: ...Wiring Diagrams SiUS331708EA 277 Appendix RXSQ48TAVJU 3D109546A...
Page 291: ...SiUS331708EA Wiring Diagrams Appendix 278 RXSQ60TAVJU 3D109547A...
Page 295: ...SiUS331708EA Wiring Diagrams Appendix 282 FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Page 298: ...Wiring Diagrams SiUS331708EA 285 Appendix FXEQ07 09 12 15 18 24PVJU 3D098557A...
Page 300: ...Wiring Diagrams SiUS331708EA 287 Appendix FXSQ05 07 09 12 15 18 24 30 36 48 54TAVJU 3D110467B...
Page 301: ...SiUS331708EA Wiring Diagrams Appendix 288 FXMQ07 09 12 15 18 24 30 36 48 54PBVJU 3D093209B...
Page 302: ...Wiring Diagrams SiUS331708EA 289 Appendix FXHQ12 24 36MVJU 3D048116C...
Page 303: ...SiUS331708EA Wiring Diagrams Appendix 290 FXAQ07 09 12 18 24PVJU 3D075354C...
Page 309: ...SiUS331708EA Wiring Diagrams Appendix 296 VAM1200GVJU 3D073270D...