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Top Products
2.
Product
does
not
operate
at
all.
("
Refer
to
Electronic
Control
Device
drawing
and
Schematic
diagram.)
Turn
off
Main
Power
.Cý_
(After
10
seconds)
Tum
on
Main
Power
Does
"beeping"
sound
is
made
from
the
Indoor
Unit?
NO
Check
the
voltage
of
power(About
AC
208V/AC230V,
60HZ)
YES
Primarily,
the
operating
condition
of
Micom
is
OK.
Main
power's
voltage
Voltage
applied
to
the
unit
Connecting
method
of
Indoor/Outdoor
connecting
cable
Check
PWB
Ass'y(Outdoor
unit)
-
Fuse
-
Pattern
damage
-
Varistor(ZNRI)
Check
the
connection
housing
for
contacting
"
Connector
related
to
CN-POWER
"
Connector
related
to
CN-FAN
"
Connector
contacting
of
Outdoor
Fan/Compressor
"
Display
PWB
Ass'y
Check
"
Connector
related
to
CN-DC/DC
Check
each
load(Indoor/Outdoor
Fan
Motor,
Compressor,
Stepping
Motor)
and
contacting
condition
of
related
connector(including
connecting
cable
of
Indoor/Outdoor
Unit)
PCB
Board
Operation
Check
Items
Content
Remedy
"
Power Transformer
(Outdoor
unit)
Input
Voltage
-About
AC208V/230V&10%
-Check
the
power voltage
"
Replace
Trans
Output
Voltage
About
AC17t3V
I&
"
IC2(7812)
Output
"
DC
+12V
"
Replace
IC2
(Indoor/Outdoor
unit)
4
"
IC3(7805)
Output
"
DC
+5V
"
Replace
IC3
(Indoor/Outdoor
unit)
I&
"
IC4(KIA7036,
Reset
IC)
"
Voltage
of
Outdoor
unit
Micom
No.
8,
"
Replace
faulty
parts
X01(4MHz)
Voltage
of
Indoor
unit
Micom
No.
43
and
soldering
(Indoor/Outdoor
unit)
condition
-50-
LJ
"