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Caution for Diagnosis
SiEN18-622
306
Troubleshooting
1.4
Troubleshooting with the LED on the BP Unit
LEDA(H1P)
(Q0395)
LED1(H2P)
LED2(H3P)
LED3(H4P)
LED4(H5P)
HIGH PRESSURE PROTECTOR WORKED, OR FREEZE-UP IN OPERATING UNIT OR STAND-BY UNIT
POWER SUPPLY FAULT OR [NOTE 2]
DIAGNOSIS
DIAGNOSIS
LED-2 LED-3
LED-1
GREEN
THERMISTOR ABNORMALITY
RED
[NOTE 1]
NORMAL
→
CHECK INDOOR OR OUTDOOR UNIT
RED
GREEN
FLASH
INTERCOMMNICATION TO
ELECTRONIC EXPANSION VALVE ABNORMALITY
LED-4
NORMALLY FLASHING
OFF
NORMAL
ABNORMALITY
→
CHECK INTER-UNIT WIRING
ON
MALFUNTION DETECTION
IRRELEVANT
NORMALLY OFF
LED-B (GREEN)
MICROCOMPUTER
: NORMAL
LED-A
ABNORMALITY
→
CHECK INTER-UNIT WIRING
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
NOTES
3P058760C
OUTDOOR UNIT : NORMAL
1.TURN THE POWER OFF THEN ON AGAIN, IF THE LED DISPLAY RECURS, THE BRANCH PROVIDER UNIT PCB IS FAU
2.TURN THE POWER OFF AND THEN ON AGAIN, IF THE LED DISPLAY RECURS, TURN THE POWER OFF AND DISCON
LINE 2 OF INTER-UNIT WIRING FOR ALL UNITS, THEN TURN THE POWER ON AGAIN.
<IF LED-A IS OFF : >
THE BRANCH PROVIDER UNIT PCB IS FAULTY.
<IF LED-A IS FLASHING : >
THE INDOOR UNIT PCB IS FAULTY. TURN THE RECONNECT LINE 2 OF ALL INTER-UNIT WIRING AND CHECK
THE DAIGNOSIS BY LEDS ON INDOOR UNIT PCB.
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 ...