Signal Transmission Error (Between Main Remote Controller And Sub Remote Controller) - Daikin RMXS-L Series Service Manual

Troubleshooting for FFQ Series
5.9 Signal Transmission Error (Between MAIN Remote
Controller and SUB Remote Controller)
U8
Error Code
Method of Error In case of controlling 1 indoor unit with 2 remote controllers, check the system using microcomputer
if signal transmission between MAIN remote controller and SUB remote controller is normal.
Detection
Error Decision Normal transmission does not continue for specified period.
Conditions
Supposed
Causes
Troubleshooting
Note: For the way to change MAIN/SUB setting of remote controllers, refer to pages 148 and 149.
216
Remote controller is set to SUB when using 1 remote controller
Connection of 2 sub remote controllers (when using 2 remote controllers)
Defective remote controller PCB
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Using 2 remote
controllers for 1
indoor unit?
YES
Are both remote
controllers set to
SUB?
YES
Is the
NO
remote controller
set to MAIN?
YES
NO
SiUS181631EA
NO
Set the remote controller to
MAIN; turn the power supply off
and then back on.
Turn the power off and then
back on. If a malfunction occurs,
replace the remote controller.
Turn the power off and then
back on. If a malfunction occurs,
replace the remote controller.
Set one remote controller to
MAIN; turn the power supply off
once and then back on.
(R24058)
Troubleshooting