Daikin VRV EMERION RXYQ-AATJA Service Manual page 279

SiUS342303E
Troubleshooting
Reference
Refer to the diagnosis flowchart below.
Part 6 Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Is the
transmission between
self-cleaning decoration panel
and indoor unit
normal?
YES
Is the dust
detection sensor
normal?
YES
Is there dust
gathered around the
dust box?
NO
Is the rotation of air
filter normal?
YES
Does the
damper open and close
normally?
YES
Is filter auto
clean operation being
performed?
YES
Is there any
external noise?
NO
Error code
AH-03 Diagnosis Flowchart-1 on page 273
AH-04 Diagnosis Flowchart-2 on page 274
AH-05 Diagnosis Flowchart-3 on page 275
AH-06 Diagnosis Flowchart-4 on page 276
AH-07 Diagnosis Flowchart-5 on page 278
AH-08 Diagnosis Flowchart-6 on page 280
AH-09 Diagnosis Flowchart-7 on page 281
NO
NO
YES
NO
NO
NO
YES
Diagnosis Flowchart
Troubleshooting by Error Code
Go to Diagnosis Flowchart-1.
(Transmission error between
self-cleaning decoration
panel and indoor unit)
AH-03
Go to Diagnosis Flowchart-2.
(Dust detection sensor error)
AH-04
Go to Diagnosis Flowchart-3.
(Dust collection sign)
AH-05
Go to Diagnosis Flowchart-4.
(Air filter rotation error)
AH-06
Go to Diagnosis Flowchart-5.
(Damper rotation error)
AH-07
Go to Diagnosis Flowchart-7.
(Filter auto clean operation
start disabled error)
AH-09
Go to Diagnosis Flowchart-6.
(Filter auto clean operation
error)
AH-08
Check the indoor unit control
PCB and self-cleaning
decoration panel PCB.
272