SiUS341802E
Troubleshooting by Error Code
Service Diagnosis
226
2.40 Outdoor Fan PCB Abnormality
Error Code
H7
Applicable
Models
RXLQ72-120TAYCU, RXYQ72-168TAYCU
Method of Error
Detection
Detect with current sensor value.
Error Decision
Conditions
When the current sensor shows abnormality.
Supposed
Causes
Defective fan PCB (A5P, A6P)
Troubleshooting
Note:
∗
1: Fan PCB and connectors
Properly connect the connector.
NO
YES
Replace the relevant fan motor.
NO
YES
Check for fan PCB applicable to the error code
H7
while in
monitor mode.
H7-21/23/25: Fan PCB (A6P) Master / Slave 1 / Slave 2
H7-22/24/26: Fan PCB (A5P) Master / Slave 1 / Slave 2
Replace the fan PCB. (
∗
1)
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Is the
connector of
relevant fan motor
normally connected?
(
∗
1)
Resistance
between U, V, W
phases of the fan motor
power supply cable has lost
balance or short circuit is
caused between U,
V, W phases.
Turn OFF the power supply
and wait for 10 minutes.
Fan motor
Fan PCB
Connector
M1F
A6P
X1A
M2F
A5P
X1A
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 ...