Table of Contents
Troubleshooting by Error Code
2.65 Improper Combination of Indoor and Outdoor Units,
Indoor Units and Remote Controller
UA
Error Code
Applicable
All indoor unit models
All outdoor unit models
Models
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
Causes
Troubleshooting
271
Excess of connected indoor units
Defective outdoor unit PCB
Mismatch of the refrigerant type of indoor and outdoor unit.
Setting of outdoor unit PCB was not carried out after replacing to spare PCB.
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-29
Error code
Sub code
UA-35
Error code
Sub code
SiUS341802E
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.
(Incorrect system setup)
Go to Diagnosis Flowchart-6.
(Multi system combination error)
Service Diagnosis
- Quick Links:
- Outdoor Unit
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Table of Contents
Troubleshooting
