Troubleshooting by Error Code
SiUS331708EA
177
Service Diagnosis
4.13 Power Supply Voltage Abnormality
Error Code
A8
Applicable
Models
FXSQ-TA, FXMQ-PB
Method of Error
Detection
Error is detected by checking the input voltage of the fan motor.
Error Decision
Conditions
When the input voltage of fan motor is 150 V or less, or 386 V or more.
Supposed
Causes
Defective power supply voltage.
Defective connection on signal line.
Defective wiring.
Instantaneous power failure, others.
Troubleshooting
YES
There
are problems on
the condition of power
supply described
above.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Correct any fault.
NO
NO
YES
Check and correct each wiring.
It is possible to have external
factor, such as brownout and
instantaneous power failure.
Check the condition
of the power supply.
(1) Check if power supply
voltage is 208-230 V
± 10%.
(2) Check if there is power
open phase or
defective wiring.
(3) Check if power supply
voltage unbalance is
within 6 V.
A8
Reoccurrence of
error.
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...
