Sub Remote Controllers - Daikin VRV III RXYQ5-54PY1 Service Manual

Troubleshooting by Indication on the Remote Controller
3.47 "U8"
Indoor Unit: Malfunction of Transmission Between
Main and Sub Remote Controllers
U8
Remote
Controller
Display
Applicable All models of indoor units
Models
Method of In case of controlling with 2-remote controller, check the system using microcomputer if signal
transmission between indoor unit and remote controller (main and sub) is normal.
Malfunction
Detection
Malfunction Normal transmission does not continue for specified period.
Decision
Conditions
Supposed
Causes
Troubleshooting
286
Malfunction of transmission between main and sub remote controller
Connection between sub remote controllers
Defect of remote controller PC board
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Using 2-remote
controllers control.
YES
SS1
of both remote controllers is
setto "SUB."
YES
SS1
NO
of remote controller PC boards
is set to "MAIN."
YES
NO
Si34-601A
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 PC board.
Set one remote controller to
"MAIN"; the power supply
off once and then back on.
(V2825)
Troubleshooting