Signal Transmission Error; (Between Main Remote Controller And Sub Remote Controller); Signal Transmission Error (Between Main Remote Controller And Sub Remote Controller) - Daikin 2MKS40G2V1B Service Manual

SiBE12-816_D
6.8 Signal Transmission Error (between MAIN Remote
Controller and SUB Remote Controller)
U8
Remote
Controller
Display
Method of In case of controlling with 2 remote controllers, check the system using micro-computer if signal
transmission between indoor unit and remote controller (main and sub) is normal.
Malfunction
Detection
Malfunction The error is generated when the microprocessor detects that the transmission between the
Decision indoor unit and the remote controllers (MAIN and SUB) is not normal over a certain amount of
time in case of controlling with 2 remote controllers.
Conditions
Supposed
Causes
Troubleshooting
Service Diagnosis
Transmission error between MAIN remote controller and SUB remote controller
Connection among SUB 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.
NO
Using 2 remote
controllers?
YES
Is SS1 of both
NO
remote controllers
set to "SUB"?
YES
Troubleshooting for SA Indoor Unit - FFQ Series
Is SS1 of
NO
remote controller PCB
set to "SUB"?
YES
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
PCB.
Set one remote controller to
"MAIN"; the power supply off
once and then back on.
(R13010)
232