U8" Malfunction Of Transmission Between Master And Slave Remote Controllers - Daikin VRV II RXYQ5MY1B Service Manual

SiE39-404
2.46 "U8" Malfunction of Transmission Between Master and
Slave 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
Malfunction transmission between indoor unit and remote controller (main and sub) is normal.
Detection
Malfunction Normal transmission does not continue for specified period.
Decision
Conditions
Supposed
Causes
Troubleshooting
Troubleshooting
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
Troubleshooting by Indication on the Remote Controller
SS1
NO
of remote controller 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 PC board.
Set one remote controller to
"MAIN"; the power supply off
once and then back on.
(V2825)
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