Daikin VRVIII-S, Service Manual

Page: 183 / 266

Troubleshooting by Indication on the remote control SiENBE34-703
172 Troubleshooting
3.42 “
U8
” Malfunction of Transmission between Main and Sub
remote controls
remote control
Display
U8
Applicable
Models
AII indoor unit models
Method of
Malfunction
Detection In case of controlling with 2-remote control, check the system using microcomputer if signal
transmission between indoor unit and remote control (main and sub) is normal.
Malfunction
Decision
Conditions Normal transmission does not continue for specified period.
Supposed
Causes
!
Malfunction of transmission between main and sub remote control
! Connection between sub remote controls
! Defect of remote control PC board
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(V2825)
Caution
SS1of both remote
controls is set to "SUB."
Set SS1 to "MAIN"; the
power supply off once and
then back on.
Set one remote control to
"MAIN"; the power supply off
once and then back on.
Turn the power off and then
back on. If a malfunction
occurs, replace the remote
control PC board.
Using 2-remote
controls control.
SS1 of remote
control PC boards is
set to "MAIN."
NO
NO
YES
YES
NO
YES