Daikin 4MXL-T Series User Manual

SiUS121827E Troubleshooting for Outdoor Unit
Part 6 Service Diagnosis 201
Note
7.4 Unspecified Voltage (Between Indoor Unit and Outdoor
Unit), Anti-icing Control in Other Rooms
Error Code UA, UH
Outdoor Unit LED
Display
A j 1 h 2 h 3 h 4 h 5 h
Method of Error
Detection
A wrong connection is detected by checking the combination of indoor and outdoor units on the
microcomputer.
Error Decision
Conditions
 Anti-icing control in other rooms
 Unspecified internal and/or external voltages
 Mismatching of indoor and outdoor units
Supposed
Causes
 Anti-icing function in other rooms
 Power supply voltage out of specification
 Wrong models interconnected
 Wrong indoor unit PCB or outdoor unit PCB mounted
Troubleshooting
Refer to Anti-icing control for indoor unit on page 202 for details.
(R21922)
Caution
NO
YES
NO
YES
NO
YES
Check the model combination.
Error displayed
while operating?
Power supply
voltage as specified?
Matched
compatibly?
The anti-icing function is
activated in other rooms.
Refer to A5.
Correct the power supply
voltage.
Match the compatible models.
Check the combination of all
connected models.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.

Daikin 4MXL-T Series Specifications

General

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