Daikin RMXS-L Series, Руководство по обслуживанию

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SiUS181305E Troubleshooting for FFQ Series
Troubleshooting 174
5.8 Signal Transmission Error between MAIN Remote
Controller and SUB Remote Controller
Error Code
U8
Method of Error
Detection
In case of controlling with 2 remote controllers, check the system using microcomputer if signal
transmission between indoor unit and remote controller (main and sub) is normal.
Error Decision
Conditions
Normal transmission does not continue for specified period.
Supposed
Causes

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
Troubleshooting
Is SS1
of remote
controller PCB set to
SUB?
Turn the power off and then
back on. If a malfunction occurs,
replace the remote controller
PCB.
Set one remote controller to
MAIN; turn the power supply
off once and then back on.
Set SS1 to MAIN; turn the
power supply off once and then
back on.
YES
NO
YES
NO NO
YES
(R19194)
Using 2 remote
controllers?
Is SS1 of both
remote controllers
set to SUB?
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.