Improper Combination Of Indoor Unit And Outdoor Unit, Indoor Unit And Remote Controller - Daikin VRV X RXQ6-48ANR Series Service Manual

SiME341909EA
5.58 Improper Combination of Indoor Unit and Outdoor Unit,
Indoor Unit and Remote Controller
Applicable All indoor unit models
All outdoor unit models
Models
UA
Error Code
Method of Error A difference occurs in data by the type of refrigerant between indoor and outdoor units.
Detection The number of indoor units connected is out of the allowable range.
Error Decision
The error decision is made as soon as either of the abnormalities aforementioned is detected.
Conditions
Supposed  Excess of connected indoor units
 Defective outdoor unit main PCB
Causes
 Mismatch of the refrigerant type of indoor and outdoor unit.
 Setting of outdoor unit main PCB was not carried out after replacing to spare PCB.
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-31
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.
(Multi system combination error)
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