Ye
s
Outdoor I/F P
.C. board
TE1 sensor : CN520, Green
TL
1
sensor : CN523, White
No
No
Ye
s
No
Ye
s
[F15]
[F08]
[F10]
[F12]
[F07]
[F13]
Sub-code: 01: Compressor 1, 02: Compressor
2
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Check code name
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Check code name
Check code name
TL
1,TL3
sensor
trouble
Check code name
Outdoor temp sensor miswiring
(TE1, TL
1
)
Cause
TL
1,TL3
sensor Open/Short
TO sensor
trouble
T
O sensor Open/Short
Check code name
Indoor TA
/TSA
sensor
trouble
T
A
sensor Open/Short
Check code name
TS1
,TS3
sensor
trouble
Cause
TS1
,TS3
sensor Open/Short
TH sensor
trouble
Cause
IPM
built-in sensor
trouble
in
A3-IPDU
This
check
code means
IPM
built-in temperature sensor
trouble
.
If sensor is normal, replace IPDU P.C. board.
1.
Misinstallation and misconnection of
TE1 sensor and
TL
1
sensor
2.
Resistance characteristics
trouble
of
TE1 sensor and
TL
1
sensor
3.
Outdoor P
.C. board (I/F)
trouble
Are installed positions
of
TE1 sensor and
TL
1
sensor correct?
Are connection
of
TE1 sensor connector
and
TL
1
sensor connector
normal?
Are resistance
characteristics of
TL
1
sensor and
TE1 sensor
normal?
Correct installed positions of
TE1 sensor and
TL
1
sensor.
Correct connection of
connectors.
Correct connection of
connectors.
Check outdoor I/F P
.C. board.
Failure
Replace
TE1 sensor: Outdoor heat exchanger temp sensor
TL
1
sensor:
Temp sensor between sub cool heat exchanger and outdoor PMV1.
* See “Outdoor unit temperature sensor characteristics” on
“8-
10
. Se
nsor Characteristics”.
This
check
code
mean
s dete
ction of
Open/Shor
t
of TL
1,TL3
sen
sor.
Check disconnect
ion
of circuit
for
connection
o
f
connector (TL
1
sensor:
CN523
WHI,
TL3
sensor:
CN90
2
PNK
) and
characteristics
of
sensor
resistance
value.
(See
“Outdoor
unit temperature
sensor characteristics” on
“8-
10
.
Sensor Characteristics”.)
If senso
r is
norm
al,
replace
ou
tdoor
I
/F P.C.
bo
ard.
This
check
code
mean
s dete
ction of
Open/S
hort
of TO
sen
sor. Check disconnection of
circuit
for connection
of
connector
(TO
sensor: CN507
,
Yellow) and
characteristics of
sensor
re
sistance value. (See
“Ou
tdoor unit
temperature
sensor characteristics”
on
“8-
10
. Sensor Characteristics”.)
If senso
r is
normal,
replace
ou
tdoor
I
/F P.C.
bo
ard.
This
check
code
mean
s dete
ction of
Open/S
hort
of TA
sen
sor. Check disconnection of
circuit
for connection
of
connector (TA
/TSA
sensor:
CN104
, Y
ellow) an
d
characteristics of
se
nsor
resistance value.
(See
“
Indoor unit
te
mperature
sensor characteristics”
on
“8-
10
. Sensor Characteristics”.)
If
sensor
i
s
n
ormal,
r
eplac
e
indoor
P
.C.
board.
This
check
code
mean
s dete
ction of
Open/S
hort
of TS1
,TS3
sensor.
Che
ck disconnection
of
circu
it fo
r
connection
of
connect
or
(TS1
sensor:
CN505
WHI,
TS3
sensor:
CN90
3
PUR
) an
d characteristics of sen
sor
resistance value.
(See “Outdoo
r
unit temperature
sensor characteristics”
on
“8-
10
.
Sensor Characteristics”.)
If senso
r is
norm
al,
replace
ou
tdoor
I
/F P.C.
bo
ard.
Sub-code: 01:TL1, 03;TL3
Sub-code: 01:TS1,
03:
TS3
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