Daikin E Series User Manual

SiAU18-715 Troubleshooting for SkyAir Indoor Unit
Troubleshooting 345
5.12 Transmission Error (between Indoor Unit and Remote
Controller)
Remote
Controller
Display
U5
Applicable
Models
FFQ, FCQ, FBQ, FHQ
Method of
Malfunction
Detection
Microcomputer checks if transmission between indoor unit and remote controller is normal.
Malfunction
Decision
Conditions
When transmission is not carried out normally for a certain amount of time
Supposed
Causes

Failure of remote controller

Failure of indoor PCB

Outside cause (noise, etc.)

Connection of 2 master remote controllers (When using 2 remote controllers)
Troubleshooting
Set one of the remote
controllers to"sub,"turn
off the power supply
temporarily, then restart
operation.
Indoor unit PCB
replacement
Malfunction could be
produced by noise.
Check the surrounding
area and restart
operation.
Change to double-core
independent cable.
Failure of remote
controller PCB or
replacement of
defective indoor unit
PCB
Malfunction could be
produced by noise.
Check the surrounding
area and restart
operation.
NO
YES
YES
YES
YES
YES
NO
(Q0542)
YES
NO
NO
SS1 of both
remote controllers is set
to "main."
Control by
2 remote controllers
NO
Is it good
condition from noise
interference?
Using multicore
transmission wiring
between indoor unit and
remote controller
Resets
normally when power
supply is turned off
temporarily.
All indoor unit
PCB microcomputer
normal monitors
blinking
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.

Daikin E Series Specifications

General

Brand	Daikin
Model	E Series
Category	Air Conditioner
Language	English