Sharp AE-XM30GR, Service Manual, Page: 14 / 42

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Status
of
indoor/outdoor
units
Indication
by
LED1
on
outdoor
unit
*2
Indication
on
indoor
u
nit
Content
o
f
d
iagno
sis
Inspection
location/method
Remedy
Floor
/
ceiling
Wall
(Panel)
Wall(Grill)
Lighting
pattern
at
the
time
of
timer
lamp
lighting
Main
Sub
Main
for
5
seconds
Main
category
Sub
c
ategory
Indoor/outdoor units
in
operation
Normal flashing
Normal
_
_ _ _ _ _
Indoor/outdoor units incomplete shutdown
1
time
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Operation
lamp(RED)
Cluster
lamp(BLUE)
Outdoor
unit
thermistor short-circuit
(1)Measure
resistance
of
the
o
utdoor
unit
thermistors.
(TH2~4,6~9
:
A
pprox.4.4
k
at
25
C)
(2)Check
the
lead
wire
of
the
o
utdoor
u
nit
the
rmistor
for
torn
s
heath
a
nd
short-
circuit. (3)No
a
bnormality
found
in
a
bove
inspec
tions
(1)and
(2).
(1)Replace
the
o
utdoor
unit
thermistor
assembly.
(2)Replace
the
o
utdoor
unit
thermistor
assembly.
(3)Replace
the
o
utdoor
unit
control
P
CB
assembly.
Indoor/outdoor units
in
complete shutdown
2
time
Cycle temperature
(1)Check
the
outdo
or
unit
a
ir
outlet
for
b
lockage.
(2)Check
if
the
p
ower
supply
voltage
is
9
0
V
or
higher
at
full
power
.
(3)Check
the
pipe
c
onnections
for
refrigeran
t
leaks.
(4)Measure
resistance
of
the
o
utdoor
unit
compr
essor
thermistor.
(TH1:Approx.53
k
a
t
2
5
C)
(5)Check
the
expansion
v
alve
for
p
roper
o
peration.
(1)Ensure
u
nobstructed
air
flow
from
the
outdo
or
unit
air
o
utlet.
(2)Connect
power
s
upply
o
f
p
roper
voltage.
(3)Charge
the
specified
a
mount
o
f
ref
rigerant.
(4)Replace
the
o
utdoor
unit
compressor
the
rmistor
assembly.
(5)Replace
the
e
xpansion
valve
c
oil,expa
nsion
v
alve
or
outdoor
unit
control
P
CB
assembly.
Indoor
unit
in
operation Outdoor
unit
in
temporary
stop
(Temporary
stop
for
cyc
le
protection)
(Temporary
stop
for
cyc
le
protection)
(Temporary
stop
for
cycle
protection)
Temporary
s
top
d
ue
to
IPM
o
verheat
*3
(Temporary
stop
for
pa
rts
p
rotection)
IPM
h
igh
temperatur
e
e
rror
(1)Measure
resistance
of
the
h
eat-sink
thermisto
r.(CN8B)
(1)Change
the
hea
t-sink
thermistor.
Indoor/outdoor units
in
complete shutdown
5
time
Outdoor
unit
thermistor
open-
circuit
(1)Check
connector
C
N8A
a
nd
CN8C
of
the
o
utdoor
unit
thermistor
for
secure
installation. (2)Measure
resistance
of
outdoor
thermistors
TH1~4,6~9.
(3)Check
the
lead
w
ires
of
thermistors
T
H1~4,6~9
on
the
o
utdoor
u
nit
control
P
CB
for
open-circuit.
(4)No
a
bnormality
found
in
a
bove
inspec
tions
(1)through
(3).
(1)Correct
the
installation.
(2)Replace
the
out
door
unit
thermistor
assembly.
(3)Replace
the
outdoor
unit
thermistor
assembly.
(4)Replace
the
outdoor
unit
control
P
CB
assembly.
Indoor/outdoor units
in
complete shutdown
6
time
Outdoor
unit
DC
Current
DC
overcurrent
error
(1)IPM
continuity
check
(2)Check
the
IPM
and
heat
sink
for
s
ecure
installation.
(3)Check
the
o
utdoor
unit
fan
motor
for
prop
er
rotation.
(4)No
a
bnormality
found
in
a
bove
inspec
tions
(1)through
(3).
(5)No
a
bnormality
found
in
a
bove
inspec
tions
(1)through
(4).
(1)Replace
the
outdoor
unit
control
P
CB
assembly.
(2)Correct
the
installation
(tighten
the
screws).
Apply
s
ilicon
grease.
(3)Replace
the
outdoor
unit
fan
m
otor.
(4)Replace
the
out
door
unit
control
P
CB
assembly.
(5)Replace
the
c
ompressor.
Indoor/outdoor units
in
complete shutdown
7
time
Outdoor
u
nit
AC
Current
AC
overcurrent
error
(1)Ensure
unobstructed
air
flow
from
the
outdo
or
unit
air
o
utlet.
(2)Check
the
o
utdo
or
unit
fan
motor.
(1)Ensure
u
nobstructed
air
flow
from
the
outdo
or
unit
air
o
utlet.
(2)Check
the
o
utdo
or
unit
fan
m
otor.
AC
current
error
w
hen
O
FF
(1)IPM
continuity
check
(1)Replace
the
o
utdoor
IPM
PWB
AC
maximum
c
urrent
err
or
(1)Ensure
unobstruct
ed
air
flow
from
the
outdoor
u
nit
a
ir
outlet.
(2)Check
the
o
utdo
or
unit
fan
motor.
(1)Ensure
u
nobstructed
air
flow
from
the
outdo
or
unit
air
o
utlet.
(2)Check
the
o
utdoor
unit
fan
m
otor.
AC
current
deficiency
error
(1)Replace
the
outdoor
unit
c
ontrol
P
CB
assembly.
(2)Charge
the
specified
a
mount
o
f
ref
rigerant.
(3)Correct
refrigerant
c
logs.
(Stop
v
alve,pipe,expansion
v
alve)
(1)Replace
the
o
utdoor
unit
control
P
CB
assembly.
(2)Charge
the
specified
a
mount
o
f
refrigerant.
(3)Correct
refrigerant
clogs.
(Stop
v
alve,pipe,expansion
v
alve)
Indoor/outdoor units
in
complete shutdown
Abnormal
w
ire
check
Abnormal
w
ire
c
heck
error
(1)Check
the
expansion
valve.
(un
it
A-D
)
(2)Are
four
expansio
n
v
alves
c
onnected
b
y
m
istake
(3)Check
the
w
iring
b
etween
u
nits.
(1)Replace
the
o
utdoor
control
b
oard
assembly.
(2)Reattach (3)Check
the
w
iring
b
etween
units.
Indoor/outdoor units
in
complete shutdown
Outdoor
u
nit
DC
Fan
Outdoor
u
nit
DC
fan
rotation
e
rror
(AE-XM30FR)
(1
)C
heck
connector
C
N3A
o
f
the
outdoor
u
nit
D
C
fan
motor
fo
r
s
ecure
installation.
(2)Check
the
o
utdo
or
unit
fan
motor
for
proper
rotation.
(3)Check
fuse
FUSE3.
(4)Outdoor
u
nit
control
P
CB
(1)Correct
the
installation.
(2)Replace
the
o
utdoor
unit
fan
m
otor.
(3)Replace
the
o
utdoor
unit
control
P
CB
assembly.
(4)Replace
the
o
utdoor
unit
control
P
CB
assembly.
Flashes
in
1-sec
inte
rvals
(normal)
:
1sec
ON
/
1sec
OFF
X
::
OFF
:
F
lashes
3
times
in
0.2-sec
intervals
8
time
11
time
X
Heat
exchanger
thermistor
short
c
ircuit
error Outdoor
temperatureth
ermistor
s
hort-
circuit
error
Suction
thermistor
sho
rt-circuit
error
Thermistor
Unit
A
-
D
thermistor
short-
circuit
error
Compressor
h
igh
tem
perature
error
Temporary
s
top
due
to
compressor
dis
-
charge
overheat
*3
Temporary
s
top
due
to
indoor
unit
heat
exchanger
o
verhea
t*
3
Heat
exchanger
thermistor
open-
circuit
error Outdoor
temperature
thermistor
o
pen-
circuit
error
Suction
thermistor
ope
n
c
ircuit
error
Suction
thermistor
open
circuit
error
Discharge
thermistor
o
pen-circuit
error
Thermistor
Unit
A
-
D
thermistor
open-
circuit
error
Temporary
stop
d
ue
to
out
d
oor
u
nit
heat
exchanger
o
verh
eat
*3