Troubleshooting for RA Indoor Unit - FTXG, FTXS, CTXS, FVXG, FVXS, FLXS, FDXS Series
SiBE121135
282
Service Diagnosis
5.7
Signal Transmission Error (between Indoor Unit and
Outdoor Unit)
Remote
Controller
Display
U4
Method of
Malfunction
Detection
The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is
checked whether it is normal.
Malfunction
Decision
Conditions
The data sent from the outdoor unit cannot be received normally, or the content of the data is
abnormal.
Supposed
Causes
Wiring error
Breaking of the connection wires between the indoor and outdoor units (wire No. 3)
Defective outdoor unit PCB
Defective indoor unit PCB
Disturbed power supply waveform
Troubleshooting
Check No.11
Refer to P.328
Check the voltage of the indoor
unit-outdoor unit connection wires
between No. 1 and No. 3, and
between No. 2 and No. 3.
Check No.11
Check the power supply
waveform.
YES
YES
Replace the indoor unit PCB.
Locate the cause of the
disturbance of the power
supply waveform, and correct
it.
NO
(R15782)
NO
YES
YES
NO
NO
Caution
Correct the indoor unit -
outdoor unit connection wires.
Diagnose the outdoor unit
PCB.
Replace the connection wires
between the indoor unit and
the outdoor unit.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Check the indoor unit - outdoor
unit connection wires.
Is there any wiring error?
Properly insulated?
Check the LED A on the outdoor
unit PCB.
Is LED A blinking?
Is there any disturbance?
Содержание 3MXS40K2V1B
Страница 187: ...SiBE121135 RA Indoor Unit Operation Manual 175 2 1 17 Quick Reference FTXG25 35 50JV1BW A Quick Reference ...
Страница 188: ...RA Indoor Unit SiBE121135 176 Operation Manual FTXS20 25K2V1B CTXS15 35K2V1B Quick Reference ...
Страница 189: ...SiBE121135 RA Indoor Unit Operation Manual 177 FVXG25 35 50K2V1B Quick Reference ...
Страница 246: ...SA Indoor Unit SiBE121135 234 Operation Manual 2 Start 5s 5s 5s 5s 5s End ...
Страница 413: ...SiBE121135 Outdoor Unit 80 90 Class Removal Procedure 401 7 Remove the sound blanket inner Step Procedure Points R10439 ...