Malfunction Of Transmission Between Remote Control And Indoor Unit; Malfunction Of Transmission Between Remote Control And Indoor Unit - Daikin E-Series Service Manual

Troubleshooting for Outdoor Unit
7.30 Malfunction of Transmission between Remote Control
and Indoor Unit
U5
Remote Control
Display
Applicable
AII indoor unit models
Models
Method of In case of controlling with 2-remote control, check the system using microcomputer is signal
transmission between indoor unit and remote control (main and sub) is normal.
Malfunction
Detection
Malfunction
Normal transmission does not continue for specified period.
Decision
Conditions
" Malfunction of indoor unit remote control transmission
Supposed
" Connection of two main remote controls (when using 2 remote controls)
Causes
" Defect of indoor unit PCB
" Defect of remote control PCB
" Malfunction of transmission caused by noise
Troubleshooting
342
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Using
YES
2-remote control
control.
NO
All indoor
NO
PC board microcomputer
monitors blink.
YES
Multi-core
cableis used for the
YES
indoor unit remote control
transmission
wiring.
NO
SS1 of
YES
both remote control
is set to "MAIN."
NO
Operation
NO
returns to normal when
the power is turned off
momentarily.
YES
SiENBE18-621
Set one remote control to
"SUB"; turn the power supply
off once and then back on.
Replace indoor unit PC
board.
There is possibility of
malfunction caused by noise.
Check the surrounding area
and turn on again.
Switch to double-core
independent cable.
replacement
Defect of remote control PC
board or indoor unit PC board.
Replace whichever is
defective.
(V2823)
Troubleshooting