Troubleshooting by Error Code
SiUS341802E
225
Service Diagnosis
2.39 Outdoor Fan Motor Signal Abnormality
Error Code
H7
Applicable
Models
RXLQ72-120TATJU, RXLQ72-120TAYDU
Method of Error
Detection
Detect of abnormal signal from fan motor.
Error Decision
Conditions
An abnormal signal is detected at startup of the fan motor operation.
Supposed
Causes
Abnormal signal from fan motor (Circuit failure)
Disconnection/Short circuit in fan motor leads or disconnection of connector
Defective inverter PCB (A3P)
Troubleshooting
Properly connect the connector.
NO
YES
Replace the fan motor.
NO
YES
Turn OFF the power supply.
Check for fan motor applicable to the error code
H7
while in
monitor mode.
Sub code
H7-01/05: Fan motor 1 (M1F) Master / Slave 1
H7-02/06: Fan motor 2 (M2F) Master / Slave 1
Check for the connector
of the fan motor.
Replace the fan PCB (A4P, A5P).
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Is the
connector of
signal cable of the
relevant fan motor
normally
connected?
Is
resistance
between Vcc and
UVW and between GND
and UVW of the fan
motor lead in
balance?
CHECK 17
CHECK 17
Содержание Aurora Series
Страница 316: ...Wiring Diagrams SiUS341802E 303 Appendix 1 Wiring Diagrams 1 1 Outdoor Unit RXLQ72TATJU 2D112580A ...
Страница 317: ...SiUS341802E Wiring Diagrams Appendix 304 RXLQ96 120TATJU 2D112581A ...
Страница 318: ...Wiring Diagrams SiUS341802E 305 Appendix RXLQ72TAYDU 2D112582A ...
Страница 319: ...SiUS341802E Wiring Diagrams Appendix 306 RXLQ96 120TAYDU 2D112583A ...
Страница 320: ...Wiring Diagrams SiUS341802E 307 Appendix RXLQ72 96 120TAYCU RXYQ72 96 120 144 168TAYCU 2D112579A ...
Страница 330: ...Wiring Diagrams SiUS341802E 317 Appendix 1 3 2 Energy Recovery Ventilator VAM Series VAM300 470 600GVJU 3D073269C ...
Страница 331: ...SiUS341802E Wiring Diagrams Appendix 318 VAM1200GVJU 3D073270C ...
Страница 332: ...Revision History Month Year Version Revised contents 04 2018 SiUS341802E First edition ...