Daikin VRV EMERION REYQ-AATJA Service Manual page 439

SiUS372201EB
Troubleshooting
Part 6 Service Diagnosis
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:
UA-17
Error code Sub code
UA-18
Error code Sub code
UA-20
Error code Sub code
UA-21
Error code Sub code
UA-25
Error code Sub code
UA-26
Error code Sub code
UA-27
Error code Sub code
UA-28
Error code Sub code
UA-31
Error code Sub code
UA-53
Error code Sub code
Troubleshooting by Error Code
Go to Diagnosis Flowchart-1.
(Connection of excess indoor
units)
Go to Diagnosis Flowchart-2.
(Connection of incorrect models
of indoor units)
Go to Diagnosis Flowchart-3.
(Improper combination of outdoor
units)
Go to Diagnosis Flowchart-4.
(Wrong connection)
Go to Diagnosis Flowchart-5.
(Defective wiring between
outdoor unit and Branch Selector
unit)
Go to Diagnosis Flowchart-6.
(Defective wiring between
Branch Selector units)
Go to Diagnosis Flowchart-7.
(Abnormal number of Branch
Selector units - outdoor units
connected)
Go to Diagnosis Flowchart-8.
(Connection of incorrect
Branch Selector unit)
Go to Diagnosis Flowchart-9.
(Multi system combination error)
Go to Diagnosis Flowchart-10.
(DIP switch setting error of Multi
Branch Selector unit)
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