Signal Transmission Error (Between Main/Sub Remote Controllers) - Daikin 4MXL-T Series Service Manual

SiUS121827E
6.11 Signal Transmission Error (Between MAIN/SUB Remote
Controllers)
U8
Error Code
Method of Error In case of controlling 1 indoor unit with 2 remote controllers, check the system using microcomputer
Detection if signal transmission between MAIN remote controller and SUB remote controller is normal.
Error Decision Normal transmission does not continue for specified period.
Conditions
Supposed  Remote controller is set to SUB when using 1 remote controller
Causes  Connection of 2 SUB remote controllers (when using 2 remote controllers)
 Defective remote controller PCB
Troubleshooting
Note
For the way to change MAIN/SUB setting of remote controllers, refer to pages 267 and 268.
Part 6 Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
NO
Using 2 remote
controllers for 1
indoor unit?
YES
NO
Are both remote
controllers set to
SUB?
YES
Troubleshooting for SA Indoor Unit
Is the
NO
remote controller set to
MAIN?
YES
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)
193