AYXPC18LR
3 – 4
:Flashes
in
2-sec
intervals
(normal)
:O
n
:Off
:Flashes
3
times
in
0.2-sec
intervals
Status
of
indoor/ outdoor
units
Indication by
LED
on
outdoor unit
Indication
by
operation
lamp
on
indoor
unit
Content
of
diagnosis
Main
category
Sub-category
Inspection
location/method
Remedy
Lighting
pattern
at
the
time
of
timer
lamp
lighting
Off
for
5
seconds
Main
category
Sub
category
Malfunction
No.
*3:
The
content
of
diagnosis
is
transferred
to
the
indoor
unit
via
serial
communication,
but
it
does
not
trigger
a
complete
shutdown
operation.
Number
of
repetition
°:
No
complete
shutdown
(1)
Check
the
wires
between
units.
(2)
Check
voltage
between
Nos.
1
and
2
on
the
indoor/outdoor
unit
terminal
boards.
(1)
Check
the
wires
between
units.
(2)
Check
the
outdoor
unit
fuse.
(3)
Check
15-V,
13-V
and
5-V
voltages
on
the
PWB.
Check
resistance
between
IPM
terminals.
(4)
Check
pins
No.
5
and
7
of
connector
CN3
of
the
outdoor
unit
fan
m
otor
for
short-circuit.
(5)
Outdoor
unit
control
PWB
(1)
Connect
stable
power
supply.
(2)
R
eplace
the
outdoor
unit
control
PWB
assembly.
(1)
Correct
the
wiring.
(2)
R
eplace
the
fuse
or
outdoor
unit
control
PWB
assembly.
(3)
Replace
the
outdoor
unit
control
PWB
assembly.
(4)
Replace
the
outdoor
unit
fan
motor.
(5)
Replace
the
outdoor
unit
control
PWB
assembly.
Serial
open
circuit
Outdoor
unit
does
not
turn
on
due
to
erroneous
wiring
Operation
lamp
Cluster
lamp
Operation
lamp
Cluster
lamp
Wires
between
units
Indoor
unit
in
operation Outdoor
unit
in
temporary
stop
Operation
lamp
Cluster
lamp
Operation
lamp
Cluster
lamp
Operation
lamp
Cluster
lamp
14
time
Indoor/ outdoor
units
in
complete
shutdown
14
0
13
0
-1
Operation
lamp
Cluster
lamp
-2
Operation
lamp
Cluster
lamp
-4
Operation
lamp
Cluster
lamp
-5
Operation
lamp
Cluster
lamp
-3
Operation
lamp
Cluster
lamp
-2
17
0
DC
compressor
Compressor
startup
error
(1)
Check
the
colors
(red,white,orange)of
the
comp-
ressor
cords
for
proper
connection.
(PWB
side,
compressor
side)
(2)
Check
ifthe
IPM
terminal
resistance
values
are
uniform.
(3)
Check
if
outdoor
main
relay
(MR
Y1)
turns
on
and
voltage
of
both
end
of
the
capacitor
(C10)
has
become
DC330V
.
(4)
No
abnormality
found
in
above
inspections(1)and(3).
(5)
No
abnormality
found
in
above
inspections(1)and(4)
.
(1)
Correct
the
installation.
(U:Red,V
:White,
W
:Orange)
(2)
Replace
the
outdoor
unit
control
PWB
assembly
.
(3)
Replace
the
outdoor
unit
control
PWB
assembly
.
(4)
Replace
the
outdoor
unit
control
PWB
assembly
.
(5)
Replace
the
compressor
.
Compressor
rotation
error
.
(at
120º
energizing)
Compressor
rotation
error (at
180º
energizing)
Detection
error
of
inverter
current.
Outdoor
unit
PFC
Module
PFC
Module
over
voltage
error
(1)
Check
the
connector
of
PFCM
for
secure
installation.
(2)
Check
the
AC
power
supply
voltage
for
fluc
tuation.
(3)
No
abnormality
found
in
above
inspec
tion
(1).
(1)
Correct
the
installation.
(2)
Connect
stable
power
supply
.
(3)
Replace
tfe
outdoor
unit
PFCM
PWB
or
control
PCB
assembl
y.
PFC
Module
PFCM
error
PFC
Module
clock
error
PFC
Module
filter
low
valtage
error
(1)
Check
the
circuit
of
detection
of
inverter
current.
(1)
Replace
the
outdoor
unit
control
PCB
assembl
y.
13
time
(1)
Check
the
connector
CN3
of
the
outdoor
unit
DC
fan
motor
for
secure
installation.
(2)
C
heck
outdoor
unit
D
C
fan
motor
for
proper
rotation.
(3)
Check
fuse
FU3.
(4)
Outdoor
unit
control
PCB.
(1)
Correct
the
installation.
(2)
Replace
the
outdoor
unit
fan
motor.
(3)
Replace
the
outdoor
unit
control
PCB
assembly.
(4)
Replace
the
outdoor
unit
control
PCB
assembly.
Outdoor
unit
DC
fan
rotation
error.
Operation
lamp
Cluster
lamp
Outdoor
unit
DC
fan
11
time
10
time
11
0
10
0
(1)
Rep
lace
th
e
outdoo
runit
control
PCB
assembly.
EEPRO
M
error
1
Operation
lamp
Cluster
lamp
Operation
lamp
Cluster
lamp
Operation
lamp
Cluster
lamp
2
EEPROM
(outdoor)
data
error
EEPROM
(outdoor)
dat
a
error
EEPROM
(outdoor)
data
error
Operation
lamp
Cluster
lamp
12
0
Therma
lfuse
in
termina
lb
oard
Thermal
fuse
error
in
terminal
bo
ard
(for
power
suppl
y)
(1
)C
heck
the
th
ermal
fu
se
in
termina
lboard
(for
Power
su
pply)
(2
)C
heck
conne
ctor
CN5
of
the
outdoo
ru
nit.
(1)
Replace
terminal
bo
ard
for
Power
suppl
y
(2)
Replace
the
outdoor
unit
control
PCB
ass
em
bly.
12
time
