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Troubleshooting for BP Unit
SiEN18-622
356
Troubleshooting
Troubleshooting
Check No.14
Refer to P.358
YES
YES
NO
(Q0393)
NO
YES
YES
NO
NO
NO
Does the malfunction
occur again?
YES
Caution
Is HAP blinking?
NO
NO (ON or OFF)
YES
Is LED A blinking?
NO
YES
Normal
(Address Setting was not
conducted)
Correct the indoor
unit-outdoor unit
connection wires.
Faulty indoor unit PCB or
malfunction of power supply
system.
Resets normally.Could
result from external cause
(e.g. noise).
Faulty BP unit PCB or
malfunction of power
supply system.
Could result from
external cause
(e.g. noise)
Replace the connection
wires between the indoor
and outdoor units.
Replace indoor unit
control PCB .
Locate the cause of the
disturbance of the power
supply waveform, and
correct it
Check for
indoor unit
microcomputer
normal HAP
Push and hold the RESET button on
the outdoor unit PCB for 5 seconds
Check the indoor unit-outdoor unit
connection wires.
Is there any wiring error?
Is HAP blinking?
Check the outdoor unit's LED A.
Is LED A blinking?
Check the voltage of the indoor
unit-outdoor unit connection wires
between No. 1 and No. 2, and
between No 2 and No. 3.
Is the voltage 0 V?
Check No. 14
Check power supply waveform.
Is there any disturbance?
Turn power supply off, and
turn on again.
Turn the power supply off
once and then back on.
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 ...