Daikin 4MXL-T Series User Manual

Troubleshooting for RA Indoor Unit SiUS121827E
164 Part 6 Service Diagnosis
5. Troubleshooting for RA Indoor Unit
5.1 Indoor Unit PCB Abnormality
Error Code A1
Method of Error
Detection
The system checks if the circuit works properly within the microcomputer of the indoor unit.
Error Decision
Conditions
The system cannot set the internal settings.
Supposed
Causes
 Wrong models interconnected
 Defective indoor unit PCB
 Disconnection of connector
 Reduction of power supply voltage

Daikin 4MXL-T Series Specifications

General

Brand	Daikin
Model	4MXL-T Series
Category	Air Conditioner
Language	English