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SiEN18-622
Troubleshooting for SkyAir Indoor Unit
Troubleshooting
333
5. Troubleshooting for SkyAir Indoor Unit
5.1
Indoor Unit PCB Abnormality
Remote Control
Display
A1
Applicable
Models
FFQ, FCQ, FBQ, FHQ
Method of
Malfunction
Detection
Check data from E²PROM.
Malfunction
Decision
Conditions
When data could not be correctly received from the E²PROM
E²PROM : Type of nonvolatile memory. Maintains memory contents even when the power
supply is turned off.
Supposed
Causes
Failure of PCB
Troubleshooting
Turn the power supply off once
and then back on.
Normal reset?
Could be outside cause
(noise, etc.)
other than malfunction
(Q0411)
YES
NO
Indoor unit PCB
replacement
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
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 ...