Caution for Diagnosis
SiENBE18-621
254
Troubleshooting
1.4
Troubleshooting with the LED on the BP Unit
LEDA(H1P)
LED1(H2P)
LED2(H
3
P)
LED
3
(H4P)
LED4(H5P)
(Q0
3
95)
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
ELECTRONIC EXPANSION VALVE ABNORMALITY
LED-4
NORMALLY FLASHING
OFF
NORMAL
ABNORMALITY
?
CHECK INTER-UNIT WIRING
ON
MALFUNTION DETECTION
IRRELEVANT
NORMALLY OFF
LED-B (GREEN)
ABNORMALITY
?
CHECK INTER-UNIT WIRING
NOTES 1.TURN THE POWER OFF THEN ON AGAIN, IF THE LED DISPLAY RECURS, THE BRANCH PROVIDER UNIT PCB IS
FAULTY.
2.TURN THE POWER OFF AND THEN ON AGAIN, IF THE LED DISPLAY RECURS, TURN THE POWER OFF AND
DISCONNECT 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.
3P058760C
INTERCOMMNICATION TO
OUTDOOR UNIT : NORMAL
MICROCOMPUTER:
NORMAL
LED-A
Summary of Contents for BPMKS967B2B
Page 1: ...SiENBE18 621 E Series Service Manual Applied Models Super Multi Plus Heat Pump...
Page 12: ...SiENBE18 621 List of Functions 1 Part 1 List of Functions 1 List of Functions 2...
Page 19: ...List of Functions SiENBE18 621 8 List of Functions...
Page 33: ...Specifications SiENBE18 621 22 Specifications...
Page 69: ...Refrigerant Flow for Each Operation Mode SiENBE18 621 58 Refrigerant Circuit...
Page 121: ...Indoor Unit SkyAir Models SiENBE18 621 110 Function...
Page 169: ...Instruction SiENBE18 621 158 System Configuration FTXS 20 25 35C Indoor Unit...
Page 371: ...Method of Replacing The Inverter s Power Transistors Modules SiENBE18 621 360 Troubleshooting...
Page 393: ...SiENBE18 621 vi Index...