Daikin RXYQ-TA Series Service Manual page 284

Troubleshooting by Error Code
Troubleshooting
271
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Ensure the sub code or
the lamp display of
monitor mode, and then
go to the following:
U7-01
Error code Sub code
U7-02
Error code Sub code
U7-03
Error code Sub code
U7-04
Error code Sub code
U7-05
Error code Sub code
U7-06
Error code Sub code
U7-07
Error code Sub code
U7-11
Error code Sub code
SiUS341615E
Go to Diagnosis Flowchart-1.
(Transmission error when the
external control adaptor is
mounted)
Go to Diagnosis Flowchart-2.
(Transmission error when the
external control adaptor is
mounted)
Go to Diagnosis Flowchart-3.
(Transmission error between
master and slave 1)
Go to Diagnosis Flowchart-4.
(Transmission error between
master and slave 2)
Go to Diagnosis Flowchart-5.
(Multi system error)
Go to Diagnosis Flowchart-6.
(Manual address setting error for
slave 1, 2)
Go to Diagnosis Flowchart-7.
(Connection 4 or more outdoor
units to the same system)
Go to Diagnosis Flowchart-8.
(Connection of excess indoor
units for test operation)
Service Diagnosis