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3-22
SM-18001-rev.1
TROUBLESHOOTING
O.U. PCB: Outdoor Unit PCB
I.U. PCB: Indoor Unit PCB
(
)
Is LED3 (yellow)
on I.U. PCB ON?
Is LED3 (yellow) on
I.U. PCB flashing more
than once in 10 seconds.
Yes
Yes
Faulty O.U. PCB.
Set it correctly.
Faulty I.U. PCB.
Faulty I.U. PCB.
Check wiring between
outdoor unit and indoor
units or fuse (EF) for
I.U./O.U. PCB.
No
Yes
No
Does Alarm occur with
all indoor units?
Yes
No
Check other indoor units.
No
No
Is LED3 (yellow)
ON even if connector
CN2 on I.U. PCB
is removed?
Yes
Yes
Indoor
Unit
Does refrigerant system
No. setting between
O.U. and I.U correspond?
O.U.: DSW4 and RSW1
I.U.: DSW5 and RSW2
Is LED1 (red) on
Change-Over Box
PCB ON?
Is LED3 (green) on
Change-Over Box
PCB ON?
Yes
No
No
Check Change-Over
Box wiring.
Check wiring between
outdoor unit and indoor
units.
No
Is LED2 (yellow) on
Change-Over Box PCB
flashing more than
once in 10 seconds?
No
Replace fuse.
Check other
Change-Over Boxes.
Yes
Is the fuse for
Change-Over Box
PCB blown?
Yes
Is voltage between
"L1" and "N" of PCN1
on Change-Over Box
PCB 208 or 230V?
Faulty Change-Over
Box PCB.
No
Change-Over
Box
(In Case
of Heat
Recovery
System)
Yes
Содержание CIDH018B21S
Страница 2: ......
Страница 10: ...viii SM 18001 rev 1...
Страница 15: ...SM 18001 rev 1 1 1 INSTALLATION 1 Installation...
Страница 19: ...SM 18001 rev 1 2 1 OPERATION 2 Operation...
Страница 22: ......
Страница 23: ...SM 18001 rev 1 3 1 TROUBLESHOOTING 3 Troubleshooting...
Страница 75: ...MAINTENANCE SM 18001 rev 1 4 1 4 Maintenance...
Страница 76: ...MAINTENANCE 4 2 SM 18001 rev 1 4 1 Maintenance of Outdoor Unit Refer to the Service Manual for Outdoor Unit...
Страница 130: ......
Страница 131: ...SM 18001 rev 1 5 1 EXTERNAL INPUT OUTPUT AND FUNCTION SETTING 5 External Input Output and Function Setting...
Страница 172: ......
Страница 173: ...SM 18001 rev 1 6 1 FIELD WORK INSTRUCTIONS 6 Field Work Instructions...
Страница 182: ...6 10 SM 18001 rev 1 FIELD WORK INSTRUCTIONS 6 8 Mollier Chart for R410A f t 3 l b...
Страница 183: ...SERVICE PARTS LIST SM 18001 rev 1 7 1 7 Service Parts List...
Страница 184: ...SERVICE PARTS LIST 7 2 SM 18001 rev 1 Refer to the Service Parts List for Ducted High Static Medium Static and Slim...
Страница 185: ......
Страница 186: ...2018 Johnson Controls Inc SM 18001 rev 1 Code No LIT 12013047 Revised February 2019...