– 77 –
Check code
Location
of
detection
De
s
cription
S
y
s
tem
s
tatu
s
Problem detection
condition(
s
)
Check item
s
(location
s
)
• Check flo
a
t
s
witch connector.
• Check oper
a
tion of dr
a
in
p
u
mp.
• Check dr
a
in p
u
mp circ
u
it.
• Check dr
a
in pipe for clogging.
• Check for defect in indoor
P.C.
b
o
a
rd.
Indoor
u
nit
Detected indoor
a
ddre
ss
Indoor overflow
pro
b
lem
All
s
top
• Flo
a
t
s
witch oper
a
te
s
.
• Flo
a
t
s
witch circ
u
it i
s
open-
circ
u
ited or di
s
connected
a
t connector.
P10
P10
• Check connection of f
a
n
connector
a
nd wiring.
• Check for defect in f
a
n motor.
• Check for defect in indoor
P.C.
b
o
a
rd.
• Check imp
a
ct of o
u
t
s
ide
a
ir
tre
a
tment (OA).
Indoor
u
nit
Indoor f
a
n
motor pro
b
lem
S
top of
corre
s
ponding
u
nit
• Motor
s
peed
me
asu
rement
s
contin
u
o
us
ly
devi
a
te from t
a
rget v
a
l
u
e.
• Overc
u
rrent protection i
s
a
ctiv
a
ted.
P12
—
—
• Check f
u
ll-clo
s
e oper
a
tion
of o
u
tdoor PMV (1, 3, 4).
• Check for defect in Pd or
P
s
s
en
s
or.
• Check g
as
ba
l
a
ncing
circ
u
it (
S
V2) for clogging.
• Check
ba
l
a
nce pipe.
• Check
S
V3B circ
u
it for
clogging.
• Check defect in o
u
tdoor
P.C.
b
o
a
rd (I/F).
• Check c
a
pill
a
ry of oil
s
ep
a
r
a
tor oil ret
u
rn circ
u
it
for clogging.
• Check for le
a
k
a
ge of check
v
a
lve in di
s
ch
a
rge pipe
convergent
s
ection.
I/F
O
u
tdoor liq
u
id
ba
ckflow
detection
pro
b
lem
All
s
top
<D
u
ring cooling oper
a
tion>
When
s
y
s
tem i
s
in cooling
oper
a
tion, high pre
ssu
re i
s
detected in follower
u
nit th
a
t
h
as
b
een t
u
rned off.
<D
u
ring he
a
ting oper
a
tion>
When
s
y
s
tem i
s
in he
a
ting
oper
a
tion, o
u
tdoor PMV 1 or
3 contin
u
o
us
ly regi
s
ter
s
opening of 300p or le
ss
while
u
nder
su
perhe
a
t
control.
P13
P13
—
• Check for in
su
fficiency in
refriger
a
nt q
ua
ntity.
• Check o
u
tdoor
s
ervice
v
a
lve
s
(g
as
s
ide, liq
u
id
s
ide) to confirm f
u
ll
opening.
• Check PMV
s
(PMV1, 3) for
clogging.
• Check re
s
i
s
t
a
nce
ch
a
r
a
cteri
s
tic
s
of T
S
1
s
en
s
or.
• Check for defect in 4-w
a
y
v
a
lve.
• Check
S
V4 circ
u
it for
le
a
k
a
ge
I/F
01:
T
S
condition
G
as
le
a
kdetection
(T
S
1 condition)
All
s
top
Protective
s
h
u
tdown d
u
e to
sus
t
a
ined
su
ction
temper
a
t
u
re
a
t or
ab
ove
j
u
dgment criterion
for
a
t le
as
t 10 min
u
te
s
i
s
repe
a
ted fo
u
r time
s
or more.
<T
S
tro
ub
le j
u
dgment criterion>
In cooling oper
a
tion: 60 ˚C
In he
a
ting oper
a
tion: 40 ˚C
P15
P15
• Check for in
su
fficiency in
refriger
a
nt q
ua
ntity.
• Check PMV
s
(PMV 1, 3)
for clogging.
• Check re
s
i
s
t
a
nce
ch
a
r
a
cteri
s
tic
s
of TD1
a
nd
TD2
s
en
s
or
s
.
• Check indoor filter for
clogging.
• Check piping for clogging.
• Check
S
V4 circ
u
it (for
le
a
k
a
ge or coil in
s
t
a
ll
a
tion
tro
ub
le).
• Check o
u
tdoor
s
ervice
v
a
lve
s
(g
as
s
ide, liq
u
id
s
ide) to confirm f
u
ll
opening.
• Check o
u
tdoor PMV
s
(PMV1, 3, 4) for clogging.
• Check re
s
i
s
t
a
nce
ch
a
r
a
cteri
s
tic
s
of TD2
s
en
s
or.
• Check for defect in 4-w
a
y
v
a
lve.
• Check
S
V4 circ
u
it for
le
a
k
a
ge.
• Check
S
V4 circ
u
it (for
wiring or in
s
t
a
ll
a
tion tro
ub
le
involving
S
V41
a
nd
S
V42).
I/F
Di
s
ch
a
rge
temper
a
t
u
re
TD2 pro
b
lem
All
s
top
Di
s
ch
a
rge temper
a
t
u
re
(TD2) exceed
s
115 ˚C.
P17
P17
—
I/F
02:
TD condition
G
as
le
a
k
detection
(TD condition)
All
s
top
Protective
s
h
u
tdown d
u
e to
sus
t
a
ined di
s
ch
a
rge
temper
a
t
u
re (TD1 or TD2)
a
t or
ab
ove 10
8
˚C for
a
t
le
as
t 10 min
u
te
s
i
s
repe
a
ted
fo
u
r time
s
or more.
Main
remote
controller
Outdoor 7-
s
e
g
ment di
s
play
Check
code
S
ub-code
