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12
Maintenance
▼
Peri
odic Mai
n
ten
a
n
c
e
•
F
or en
v
ironm
enta
l co
nserv
a
tio
n, it is strongly recomm
end
ed th
at the
in
door an
d ou
tdoor un
its o
f the
air
con
ditioner (including
h
o
t water mod
ule) in use be
c
lea
ned an
d maint
ained r
egular
ly
to
ensur
e efficient op
er
ation
o
f the
air con
ditio
ner.
W
hen the
a
ir conditione
r (includ
in
g
h
ot wa
ter
m
odule) is
ope
ra
ted for
a
lon
g
tim
e, per
iodic mainte
nance (
once a
yea
r) is re
commende
d.
Fur
the
rm
or
e, r
egular
ly check the
outdo
or
unit for
r
u
st an
d scra
tches, an
d remo
v
e
them or app
ly rustproo
f
tr
ea
tmen
t, if ne
c
e
s
s
a
ry.
A
s
a
gen
era
l
rule,
whe
n an
in
door
un
it
is o
per
ated
fo
r 8 hou
rs o
r m
o
re daily, clean
the indo
or
unit an
d out
door
u
n
it at lea
s
t once e
v
e
ry 3
mon
ths. Ask a p
rof
essio
nal for this cleaning
/ ma
in
tena
nce work.
S
uch ma
in
tena
nce can e
x
tend t
he life of
the p
rod
uct tho
ugh it invo
lves t
he owner
’s expen
s
e
.
Failure to
c
lea
n the
in
door an
d out
door un
its regu
la
rly w
ill result in po
or p
e
rforman
c
e
, freezing, wate
r lea
k
a
g
e,
a
nd eve
n compre
s
so
r fa
ilure.
Inspection
before maintenance
Following insp
ection must be
c
a
rried ou
t by a q
ualified installer or qua
lified se
rvice pe
rson.
▼
Maintenance List
It recom
men
ds that
a pum
p a
nd a straine
r a
re m
a
inta
in
ed pe
riodically.
Parts
Inspection method
D
rain pa
n
Access
fr
om inspec
tion ope
ni
ng
and r
emov
e the
fr
ont p
anel. Check
i
f there is an
y clogging or d
rain
w
a
te
r is
poll
uted.
Part
Unit
Check
(visual / auditory)
M
aintenance
H
e
at exch
anger
Outdoor
D
us
t / dirt
cloggi
ng,
s
c
ratches
Wash
the
heat exc
hanger
when
it
is
clogged.
Fan motor
Outdoor
S
o
und
Take appr
opriate
m
easur
es when
abnor
mal sound i
s
ge
nerated.
Ai
r
inlet / outl
e
t gril
les
O
utdoor
D
us
t / dirt, scr
atch
es
Fi
x
or
r
epl
a
c
e
them
w
he
n they
are
deform
ed or dam
aged.
Dr
ain
pa
n
H
ot wate
r modu
le
D
u
s
t / dirt
clogging,
d
rain
contaminati
on
Cl
ean
the
drain
pan a
nd c
heck
th
e
downward slope for
s
m
ooth drainage
.
Exte
rior
Hot water
module /
Outdoor
•
R
ust,
pee
ling of insulator
•
P
ee
ling / lift of coat
Apply r
epair
coati
ng
.
Wat
er pi
pes
H
ot w
a
te
r modu
le
R
u
s
t, leakag
e
E
v
iden
ce of l
e
akage
Checking
Str
ai
n
er
Hot wate
r modu
le
D
u
s
t / dirt
clogging
Checking
13
Troubleshooting
Confir
m
ati
on and check
W
hen
an error occurred
in
the
hot water module,
an
e
rror code
and ind
oor UNIT No. (inclu
ding ho
t water
m
odu
le
) a
ppea
r o
n the
disp
la
y par
t of t
he r
em
ote
co
ntroll
e
r.
The
erro
r cod
e
is only displayed d
u
ring
the
operation.
If
t
he display dis
a
ppea
rs, ope
ra
te the ho
t
wate
r mo
dule
a
c
c
o
rd
in
g to t
he fo
llowing “Confirm
ation
of e
rror log” for
co
nfirmation.
Conf
irmation of error log
Wh
en a
n er
ro
r o
c
cu
rr
ed o
n the
hot wate
r m
odu
le
, the
error
lo
g can b
e confirme
d with
the f
ollowing
pr
oced
ure
. (
T
he
er
ro
r log
is sto
red
in me
mor
y
up
to 4
error
s.)
The log
can be
confirmed
fro
m b
o
th o
perating sta
tus
an
d stop
s
tatus.
1
Wh
en
a
nd
b
u
tton
s
are pushe
d simultan
eously
for 4
s
e
conds or more, the
following
display app
ears.
If
is displayed, t
he m
ode
enters in the
error log
m
ode.
•[
01
:
Orde
r o
f erro
r log
] is d
isp
la
ye
d in CODE
No..
•
[Err
o
r code] is displayed in CHEC
K
.
•
[Indo
or
unit ad
dre
s
s
in
which a
n er
ror o
c
cu
rr
ed]
is
displayed in Unit No..
2
Every push
ing
of
butto
n used
to set
temperatu
re
, the e
rror log stored
in
me
mory is
displayed
in
order.
The numb
ers
in
C
O
DE No. indicate C
O
DE No. [
01
]
(l
atest)
→
[
04
] (oldest).
REQUIREMENT
Do no
t
push
bu
tton b
ecause
all
th
e er
ror
log
of
the indoor
unit (including hot wate
r modu
le)
will
b
e
de
let
ed.
3
Afte
r co
nfirmation,
push
b
u
tton
to return t
o
the
usua
l dis
p
la
y.
Err
or code
In
door UNIT No
. (includin
g
ho
t
wat
er module) in which
an
er
ror
occur
red
3
2
1