– 81 –
7
Notes on operations and performance
Check before operation
•
T
urn o
n
the
power switch a
t le
ast 12
hours bef
ore
sta
rting
operation
.
•
M
ake sure t
he ea
rth
wire is securely
c
o
nnecte
d.
Defrosting during heating
•
If fro
st falls on th
e out
door un
it d
u
rin
g
hea
ting,
d
e
frosting is auto
mat
ically performe
d (for
a
pproximate
ly 2
- 1
0
m
in
u
tes) to increase th
e
h
eating effect.
•
T
he
hot wate
r m
odu
le
outp
uts the
pum
p ope
rat
io
n
d
u
ring
defrosting.
3-minute protection
The ou
tdoor un
it
will
not o
perate fo
r a
pproximate
ly 3
minut
es afte
r th
e air conditione
r (including h
o
t water
mo
dule) has be
en imm
ediat
ely
resta
rte
d afte
r
stopp
ing
, or th
e po
wer swit
c
h
has b
een
turned
on. This
is
to
protect the
system.
Power failure
•
In the
c
a
se of a
power failure, all ope
rat
io
ns stop.
•
T
o resum
e o
perations, p
u
sh the
ON/OFF but
ton.
Pro
tecti
v
e devi
ce
(High pressure switch)
The high
pressure
switch sto
ps the a
ir con
ditio
ner
(including
hot
wat
er modu
le
) a
u
tomaticall
y
when
excessive
load is
app
lied
to
the air conditione
r sy
ste
m.
If th
e protective d
e
vice
activ
a
tes, the
unit’s running
stops an
d the
ope
ration
lamp
blin
k
s
.
Whe
n the protective device activates, the
ind
ica
tor
and
the che
c
k
c
o
de are d
isp
la
y
e
d on
the rem
ote
controller.
The
protective de
vice m
a
y activate
in
the
follo
wing
cas
e
s:
During
c
o
oling
•
W
h
en th
e air in
take or air discharge o
f the
outdo
or
un
it is
blocked
.
•
W
h
en strong
wind b
lo
w
s con
tin
uously aga
in
s
t the a
ir
discharge o
f the
outdo
or unit.
During
heat
ing
•
W
h
en du
st or dirt
is e
x
ce
s
s
ively adh
ere
d to
the
strainer (loca
lly procured) of
wate
r p
ip
e
.
•
W
h
en th
e water flow ra
te is lowe
r.
NOTE
W
hen
the p
rote
ctive
device activates,
turn
off t
he
p
o
we
r switch, remo
ve the
c
a
use, a
nd the
n
restart
runn
in
g.
Cooling / Heating operations
E
a
ch un
it ca
n be
c
o
ntrolle
d individually. Ho
we
v
e
r,
ind
oor
u
n
its
conn
ected to the same
ou
tdoor unit
ca
nnot
p
e
rform cooling
and h
eating
s
im
u
ltaneo
usly
.
W
hen
you att
e
mp
t sim
ultane
ous op
era
tion, h
o
t water
m
odu
le
performing
heating
are stopp
ed, a
nd th
e
run
n
ing prepa
ra
tio
n indicator
is
disp
la
y
e
d on
the
re
mo
te
c
o
n
tro
ller
.
A
n
indoo
r u
n
it performing
cooling cont
in
ues running
.
W
hen
yo
u attem
p
t an
operation
withou
t the con
fig
ured
se
ttings, the
ru
nning
pre
paration ind
icat
or
is
d
isp
la
y
e
d o
n
th
e rem
o
te
controller
and
op
era
tion sto
ps.
If
ope
rat
ion
is
fixe
d to coo
ling
or hea
tin
g by th
e air
co
nditioner ad
ministra
tor, only the
configured
settings
a
pply to th
e op
era
tion.
Characteristics of heating
W
hen
the o
utside te
mperatu
re
in
crea
s
e
s, the
outdo
or
u
n
it
ma
y
st
op.
8
Maintenance
WAR
NI
NG
For daily maintenance, make
sure to ask the qualified
service person particularly
following models as the
maintenance requires high-
place work;
Cl
eani
ng the hot water
module and remote contr
o
ll
er
•
Ask qua
lified
service pe
rson
to clean
the h
o
t water
module fo
r t
he models lis
ted in th
e warn
in
g on
the
top
of th
is cha
pter.
•
W
ipe
with
a dry, soft cloth
.
•
D
o no
t use be
nzine, th
in
ner, scourin
g po
wde
r,
chem
ic
a
l c
loth
, etc. a
s
t
hose m
a
y cause d
e
forma
tio
n
or breakag
e.
If unused for over a month
•
B
ef
ore
a long
per
iod of
none
use, p
urg
e the
wa
ter
ou
t of th
e pipes a
nd th
oro
ughly let t
hem
dry.
•
T
urn off
the main po
wer swit
c
h
.
Periodic inspection
•
Afte
r b
e
ing use
d for a lon
g
period o
f time,
the p
a
rt
s
m
ay deteriorate or ma
lf
unction, o
r the
drain
age m
ay
wors
e
n
, du
e to h
eat, moisture, d
u
st, or gen
eral
usag
e.
•
In
addition t
o
the
mainte
nance
, it is
recom
me
nded
tha
t you h
a
ve a insp
ectio
n (charges ap
ply
)
pe
rfo
rm
ed by t
he de
aler
whe
re
you pu
rcha
se
d the
un
it,
etc.
Before the operating season
Ask a
qual
ifie
d s
ervic
e person to cl
ean the
dra
in
pan.
CAU
TI
ON
Clean the drain pan
Without cleaning, the drain pan
may be filled with waste, and
water may overflow onto the
floor.
