Troubleshooting by Error Code
SiUS341802E
251
Service Diagnosis
2.54.2 Inverter Radiation Fin Temperature Abnormality (Fan PCB)
Error Code
P4
Sub code: 02, 03, 15-18
Applicable
Models
All outdoor unit models
Method of Error
Detection
Detects the resistance of the thermistor located inside the fan PCB circuit while the fan motor is not
in operation:
Error Decision
Conditions
The resistance of the thermistor comes to a value equivalent to open or short circuit.
Supposed
Causes
Defective fan PCB
Defective fan motor
Troubleshooting
The insulation
resistance of the relevant
fan motor is not more
than 1 M
Ω
.
Turn ON
the power supply.
Does the error
recur?
NO
YES
NO
YES
Replace the fan motor.
Replace the fan PCB.
RXLQ-TATJU,
RXLQ-TAYDU: A4P, A5P
RXLQ-TAYCU,
RXYQ-TAYCU: A5P, A6P
Continue operation.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Check for fan PCB applicable to the error code
P4
while in
monitor mode.
P4-02/15/17: Fan PCB Master / Slave 1 / Slave 2
P4-03/16/18: Fan PCB Master / Slave 1 / Slave 2
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 ...