Unspecified Voltage (Between Indoor And Outdoor Units) / Anti-Icing Function In Other Rooms; Tion In Other Rooms - Daikin SUPER MULTI NX G Series Service Manual

SiUS12-928_A
5.28 Unspecified Voltage (between Indoor and Outdoor Units) /
Anti-icing Function in Other Rooms
UA, UH
Remote
Controller
Display
Outdoor Unit LED A
Display
Method of
A wrong connection is detected by checking the combination of indoor and outdoor units on the
Malfunction microcomputer.
Detection
 Anti-icing function in other rooms
Malfunction
 Unspecified internal and/or external voltages
Decision
 Mismatching of indoor and outdoor units
Conditions
 Anti-icing function in other rooms
Supposed
 Wrong models interconnected
Causes
 Wrong indoor unit PCB or outdoor unit PCB mounted
Troubleshooting
Note: Refer to "Anti-icing function" on page 113 for detail.
Service Diagnosis
1 2 3 4
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Error displayed while
operating?
YES
Supply voltage as
specified?
YES
Check the model combination.
Matched compatibly?
YES
Check the combination of all the
models being connected.
NO
NO
NO
Troubleshooting
The anti-icing function is
activated in other rooms.
Refer to A5.
Correct.
Match the compatible models.
(R7151)
148