Sharp AE-X2M14LR, Service Manual

Page: 22 / 40

3 – 7
Yes
No
Yes
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Yes
No
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No
Yes
No
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No
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No
No
No
Yes Yes
Yes
Yes Yes
Yes
Yes
Yes
Open
circuit
of
the
outdoor
thermistor
Replace
the
thermistor.
Replace
the
fan
motor.
Replace
the
outdoor
control
PWB.
Replace
the
Compressor.
Replace
the
IPM
PWB.
Replace
the
current
transformer
Connect
CN6.
Overheat
of
the
compressor
Is
CN3
connected
?
Is
CN16
connected
?
Check
the
voltage
(15V).
Check
the
voltage
(15V).
Check
the
voltage
(5V).
Replace
the
IPM
PWB
Connect
CN3
Connect
CN16
Check
the
FUSE
5
AC
overcurrent
Rotation
error
of
the
compressor
Power
module
PWB
(IPM)
abnormality
Abnormal
AC
current
Open
circuit
of
serial
signal
line
Short
circuit
of
serial
signal
line
Power
factor
m
odule
(AF1)
error
Replace
the
Power
factor
module
(AF1)
Are
2
LEDs
switched
off
?
Is
CN6
connected
?
The
cycle
is
abnormal.
The
compressor
is
abnormal.
P-U
,N-U
P-V
,N-V
P-W
,N-W
A
Is
the
resistance
value
of
the
ther-
mistor
for
the
com-
pressor
(TH1),
heat
ex-changer
(TH2)
or
outdoor
temper-
ature
(TH3)
or
suc-
tion
(TH4,
TH6-7)
correct?
Is
each
of
the
resist-
ance
values
among
the
terminals
of
the
IPM
PWB
0
?
P-U
,N-U
P-V
,N-V
P-W
,N-W
Is
each
of
the
resistance
values
among
the
termi-
nals
of
the
IPM
PWB
0
?
Is
the
IPM
PWB
in
a
state
of
floating
from
th
eh
ea
ts
in
k?
Fix
the
IPM
PWB
with
screws
securely.
Is
the
winding
of
the
current
transformer
(CT1)
broken
?
Is
the
resistance
value
of
the
winding
in
the
current
trans-
former
(CT1)
?
(720)
Is
the
Power
factor
module
in
a
state
of
flaoting
from
the
heatsink?
Fix
the
Power
factor
module
with
screws
secuerly
Is
the
resistance
value
among
the
terminal
of
the
Power
fac
-
tor
module
(AF1)
0
?
Is
the
outdoor
fan
motor
operating
?
Inspect
the
compres-
sor,
heat
exchanger
and
piping.
Is
the
resistance
value
between
5
and
8
of
fan
motor
0?