93
Ca
us
e
1.
Float
switch e
rro
r
2.
D
ra
in p
u
m
p
er
ro
r
3
.
Dr
ain
clog
g
ing
4.
In
doo
r PC
b
oar
d
er
ro
r
Che
ck cod
e n
a
me
In
door
over
flo
w er
ror
Ch
eck co
de
[P
1
0
]
Chec
k
the d
ra
in p
ipe
, etc
.
No
Ye
s
Is
th
e
floa
t s
w
itc
h
co
nne
ct
or
(I
nd
oo
r con
tr
ol
bo
ar
d
CN34
)
co
rrec
tly?
Is
th
e flo
at s
w
itc
h
wor
ki
ng?
No
Ye
s
No
Ye
s
Is t
he dr
ai
n
pu
m
p
wo
rk
in
g
?
*
M
a
k
e s
u
re
th
at th
e vo
lta
ge i
s
2
20-
240
V fo
r 1
-
3
pi
n of CN6
01 o
n
the
ind
oor
boa
rd
.
A
u
xi
liar
y c
ode
: Dete
ct i
ndo
or
addr
es
se
s
Is
the
ci
rc
ui
t
wi
ri
ng
pr
oper
?
No
Ye
s
Co
rr
ec
t the
co
nnec
tor
c
onn
ecti
on
Is
the
drain
pump
co
nduc
ted?
*
No
Ye
s
Ch
eck
the
dr
ain
pum
p r
e
pl
ace
ment
wir
in
g
Ch
eck
a
nd c
o
rr
ec
t wi
ri
ng
/ c
ir
c
u
it
Ch
eck
the
ind
oor
boa
rd
Er
ro
r
ĺ
Re
pla
c
e
Ch
eck
the
ind
oor
boa
rd
Er
ro
r
ĺ
Re
pla
c
e
Ca
use
1.
PM
V1
/ P
M
V
2
/
PM
V4
er
ror
2.
Pd
/ P
s
s
e
n
s
or
e
rr
o
r
3
.
S
V
2 val
ve cir
cu
it
cl
og
gi
ng
4.
Ba
la
nce
pip
e /
S
V
3
B
va
lve cir
c
uit
clo
g
g
in
g
5
.
Ch
eck va
lve lea
k
ag
e in
th
e d
isch
ar
ge
a
re
a
6
.
O
u
td
oor
I
/F bo
ar
d
er
ro
r
Ch
eck co
de
na
me
O
u
tdoor compre
ssor
li
quid
compr
ess
ion erro
r
Che
ck cod
e
[P
13
]
Ch
ec
k th
e I/F
bo
ar
d
No
Ye
s
Is
the
out
door
P
M
V1
/
PMV
2 / P
M
V
4
c
onnec
tor
c
onne
cti
on c
o
rr
e
ct?
Cor
re
ct t
he c
onne
cto
r c
onn
ec
tion
PMV
1: CN3
00
PMV
2: CN3
01
PMV
4: CN3
03
No
Ye
s
Is
the
out
door
P
M
V1
/
PM
V2 /
PMV
4 wo
rk
in
g
pro
per
ly
?
Ar
e
Pd
and
Ps
s
ens
or
out
put v
o
lt
age
ch
a
ra
c
te
ri
st
ics
c
o
rre
ct?
Is
the
SV
2 v
a
lv
e c
o
il
c
onne
cted
c
o
rre
ctl
y?
No
Ye
s
No
Ye
s
No
Ye
s
Ye
s
No
clog
ging
Is
the
s
e
rv
ic
e
va
lv
e of
b
a
la
nce
pip
e of a
ll the
uni
ts opene
d
ful
ly
?
Is
the
SV
3B val
ve
ci
rc
ui
t
c
log
ged?
Ye
s
No
clog
ging
Ye
s
No
Is
the
SV3
B v
a
lv
e
ci
rc
ui
t of
n
on-
er
ro
r uni
ts
c
log
ged?
Is
th
e ch
ec
k v
a
lv
e
in th
e di
sc
har
ge
ar
ea
of the
termi
nal
with
the
c
o
mpr
es
s
o
r sto
pped
dur
in
g c
ool
ing
lea
ked
?
P
M
V e
rro
r
Pd /
Ps
se
ns
or
er
ror
Cor
re
ct t
he c
onne
cto
r c
onn
ec
tion
(S
V2
: CN311
)
Op
en th
e s
e
rv
ic
e v
a
lv
e
of ba
lan
ce
pip
e of a
ll the u
n
it
s fu
lly
Repl
ace
the
cl
ogge
d co
mpon
ent
Repl
ace
the
cl
ogge
d co
mpon
ent
Repl
ace
the
che
ck
va
lv
e i
n
the
dis
c
har
ge a
rea
Summary of Contents for MD-VNK802HEXE
Page 120: ...118 11Owner s Manual Excerpt ...
Page 137: ...135 12Installation Manual Excerpt ...