U8 " Malfunction Of Transmission Between Main And Sub Remote Controls - Daikin ALTHERMA HT Service Manual

ESIE09-08B
3.60 "U8 " Malfunction of Transmission between Main and Sub
Remote Controls
U8
Remote Control
Display
AII indoor unit models
Applicable
Models
In case of controlling with 2-remote control, check the system using microcomputer if signal
Method of
transmission between indoor unit and remote control (main and sub) is normal.
Malfunction
Detection
Normal transmission does not continue for specified period.
Malfunction
Decision
Conditions
 Malfunction of transmission between main and sub remote control
Supposed
 Connection between sub remote controls
Causes
 Defect of remote control PC board
Troubleshooting
Troubleshooting
Be sure to turn off power switch before connect or disconnect
connector, or parts damage may be occured.
Caution
Using
2-remote controls control.
YES
SS1 of both
remote controls is set to
"SUB."
YES
Troubleshooting by Indication on the Remote Controller
SS1 of remote
NO
control PC boards is set to
"MAIN."
YES
NO
NO
Set SS1 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
controller
Set one remote control to
"MAIN"; the power supply off
once and then back on.
(V2825)
205