![background image](http://html1.mh-extra.com/html/daikin/ftks50bvmb/ftks50bvmb_service-manual_501473341.webp)
SiEN18-622
Troubleshooting for RA Indoor Unit
Troubleshooting
329
4.5
Shutter Drive Motor / Shutter Limit Switch Abnormality
Remote Control
Display
C7
Method of
Malfunction
Detection
The shutter open / close performance is detected by the limit switch attached on its structure. In
this way, the shutter drive motor and the shutter limit switch are checked for failure.
Malfunction
Decision
Conditions
When the shutter is open, the limit switch is closed.
Supposed
Causes
Shutter drive motor defective
Shutter limit switch defective
Shutter itself deformed (warped)
Shutter's sealing material too thick
Detection error by broken relay harness or disconnected connector
Detection error due to defective PCB (2)
Foreign substance in blow port
Troubleshooting
Check No.03
Refer to P.330
Turn off the power.
Check No. 03
Check the limit switch continuity.
(Q0410)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Foreign substance in
the shutter structure?
Shutter closed?
Shutter opening itself?
YES
Relay harness
broken or connector
disconnected?
Limit switch on power?
Open the shutter and turn on the
power.
YES
YES
YES
NO
NO
NO
NO
NO
Remove such substance.
Replace the limit switch.
Reconnect the connector or
replace the relay harness.
Replace the shutter drive
motor or the PCB (2).
Check the shutter's sealing
material.
Check the shutter for
deformation or its sealing
material.
YES
Summary of Contents for FTKS50BVMB
Page 1: ...SiEN18 622 E Series Service Manual Applied Models zSuper Multi Plus Cooling Only Heat Pump ...
Page 105: ...Refrigerant Flow for Each Operation Mode SiEN18 622 92 Refrigerant Circuit ...
Page 157: ...Indoor Unit SkyAir Models SiEN18 622 144 Function ...
Page 312: ...SiEN18 622 Ceiling Mounted Cassette Type System Configuration 300 ...
Page 424: ...Method of Replacing The Inverter s Power Transistors Modules SiEN18 622 412 Troubleshooting ...
Page 446: ...Wiring Diagrams SiEN18 622 434 Appendix ...
Page 452: ...SiEN18 622 vi Index ...