Xt
6
6
7
Xt
7
6
7
Xt
8
A
BX
Y
E
12
3
4
5
CO
NN
EC
T
TO
SO
LA
R
PU
M
P
ST
AT
IO
N
23
0V
AC
IN
PU
T
SV1
SL
1
SL
2
ON
OF
F
N
P_
o
N
SV
2
N
12
4
6
7
5
89
18
19
P_
s
N
22
23
N
21
TB
H
ON
OF
F
6
7
N
21
SO
LA
R
PU
M
P
C
on
tro
l
si
gna
l
out
pu
t
T
A
N
K
B
OOS
T
H
EA
TE
R
C
O
NT
RO
L
S
IG
NA
L
O
U
TP
U
T
T
A
N
K
B
OOS
T
H
EA
TE
R
C
O
NT
RO
L
S
IG
NA
L
O
U
TP
U
T
PU
M
P
O
CO
NT
R
O
L
S
IG
NA
L
O
UT
P
U
T
P_
d
N
29
30
Km
5
A1
A2
AH
S1
AH
S2
FU
S
E
27
28
SV
1
CONNE
CTT
O
W
IR
E
C
O
N
TR
O
LE
RL
Pl
eas
e us
e s
hiel
ded w
ire an
d ear
th t
he
w
ire
M1
M2
9
10
P
QE
67
8
SV
2
HT
N
A1
10
11
SOL
AR
PU
MP
P_
c
N
16
17
H
13
SO
LA
R
INP
UT
M
et
hod 1
:
M
ethod
2:
A1
12
24
14
CO
O
L
C
H
3
HE
AT
L1
H
13
14
C
H
3
L1
H
13
14
C
H
3
L1
SV
1
NO
R
M
A
L
O
PE
N
TE
R
M
IN
A
L
NO
R
M
A
L
CL
O
S
E
TER
M
IN
A
L
NEU
TRA
L
TE
R
M
INA
L
ON
OFF
N
ad
di
tio
na
lhe
at
so
ur
c
e
R1
R2
25
26
DF
T1
DF
T2
31
32
S
A
N
IT
A
RY
T
A
NK
P
U
M
P
C
ont
ro
l
si
gna
l
out
pu
t
IB
H1
20
N
21
DH
W
ELE
CTR
IC
BAC
KUP
H
EAT
IN
G
O
U
TS
ID
EC
IR
C
LEP
U
MP
CL
O
SE
:S
H
U
TDO
W
N
Rem
ot
e
Sh
ut
do
w
n
SW
IT
CH
RE
SE
RV
ED
FU
SE
A2
24
PC
CO
O
L
PO
WER
IN
Met
ho
d 1:
Met
hod 2:
Met
ho
d 3:
PC
PO
WER
IN
PC
PO
WE
R IN
PC
PO
WER
IN
1.P
ower
s
uppl
y of
mac
hine an
d r
oom
ther
mos
tat
m
us
t be
c
onn
ec
ted t
o
Ex
term
al O
N/O
FF
th
er
m
asta
t
Ant
ifr
eez
e E
-H
e
at
ing
ta
pe
CO
NT
RO
L S
IGNA
L
OU
TP
UT
PU
M
PC
CO
NT
R
O
L
SI
G
NA
L
O
UT
PUT
FU
SE
R1
R2
FU
SE
DF
T1
DF
T2
add
iti
on
a
l
he
at
sour
c
e
CO
N
TR
O
L
S
IG
NA
L
O
UT
P
U
T
RE
M
O
TE
AL
ARM
Ant
ifreez
e
E-
He
ati
ng
ta
pe
PU
M
PC
ROOM
TH
ER
MO
ST
AT
PC
:R
OO
M
TH
ER
M
OS
TA
T
the s
am
e N
eu
tral
Li
ne a
nd (
A)
P
has
e Li
ne
.
2.F
or
m
ore
in
fo
rm
ati
on
,pl
ea
se
re
fe
r to
IN
S
TA
LL
AT
IO
N &
O
W
NE
R'
S M
AN
UA
L
RU
NNI
NG
DE
FRO
ST
IN
G
PROM
PT
SI
GNA
L
ad
di
tio
na
l
he
at
so
ur
c
e
NOTE
Eq
uip
m
en
t m
us
t be
g
rou
nd
ed
.
Le
aka
g
e
P
rot
ec
tio
n
Sw
itc
h
m
us
tb
e
in
st
all
ed
to
th
e
P
ow
er
Figure
2
‐
4
.
3
HTW-V16WD2RN8
wiring
diagram
(continued)
Ex
te
rna
l lo
ad
c
urre
nt
is
n
ee
de
d le
ss
th
an
0
.5
A
, i
f t
he
lo
ad
c
urre
nt
is
g
re
at
er
th
an
0
.5
A
,th
e
lo
ad
m
us
t be
co
nt
ro
lle
d t
hr
ou
gh
A
C
co
nt
act
or
. E
ach
ex
ter
nal
lo
ad
cu
rr
en
t i
s n
ee
de
d l
ess
th
an
0.
5A
A
ll high
-v
ol
ta
ge
e
xt
ern
al
loa
d, if
it
is
m
et
al
or
a
gro
un
de
d p
ort
, mus
t b
e g
ro
und
ed
.
"A
H
S1"
"
A
H
S2"
, "
A
1"
"
A
2"
, "
R
1"
"
R
1"
an
d "
D
TF
1"
"
D
TF
2"
w
iri
ng
ter
m
in
al
p
or
ts p
ro
vi
de o
nl
y t
he
sw
itch
s
ig
nal
.
HY
DR
O
-B
O
X
Co
nt
ro
l
Bo
ar
d
S1
ON
OF
F
ON
DI
P
ON
DI
P
FAC
TO
R
Y
S1
S
2
us
tb
e
st
a
ed
to
t
e
oe
Supp
ly
of
th
e
el
ectr
ic
hea
ting
.
Eq
ui
pm
en
t m
us
t b
e g
rou
nd
ed
.
M
AI
N
CO
NT
R
O
L
BO
AR
D
CODE
PA
R
T
N
A
M
E
Ci
t
CODE
P
A
RT
NA
ME
T2
T
f
fi
t li
id
Se
quen
ce
0
2
Con
tent
No
rm
al d
isp
la
y :O
FF
:0
;O
N:
T1
(S
ho
w
Tw
out
W
he
nT
1
in
val
id
an
d
in
clu
di
ng
T1
is
n
ot s
et o
rT
1
fa
ult)
Ca
paci
ty r
equi
re
me
nts
1
Mo
de (0
/Of
f,2/C
ool,
3/He
at,5
/Hea
t wa
ter)
S1
ON
34
2
1
ON
34
2
1
ON
34
2
1
ON
34
2
1
PI
P
E
T1
50
m
5m
YE
S
N
ON
ON
34
DI
P
2
1
ON
34
DI
P
2
1
FAC
TO
R
Y
SE
TT
IN
G
Se
tS
3
to
0
S3
2
0
N
or
m
al d
is
play:
O
F
F
:0;
O
N
:f
requ
en
cy
1
M
ode
: 0
:Of
f;
2
:C
ool
3
:H
ea
t;4
:Fo
rc
e C
oo
l
Fa
n s
pe
ed
Sequ
en
ce
Con
ten
t
Co
m
pre
ss
or
HE
AT
1
CT
1
AC
c
ur
rent
det
ec
to
r
COM
P.
EE
V.
E
le
ct
ric
expa
ns
iv
e val
ve
O
utd
oo
r fa
n mo
to
r
FA
N
HP
R
O
C
omp
ress
or
el
ectri
ca
lh
eat
in
g
tap
e
H
igh
pr
es
su
re s
w
itc
h
CAP1
-CAP
5
C
apac
itor
TW
_o
ut
TW_
in
T2
B
T2
Te
m
p.s
en
so
r fo
rt
he b
ac
kup
hea
ter
ex
chan
ger
out
let w
ate
r
Te
m
p. se
nso
r f
or exc
han
ger
out
let
w
ate
r
Te
m
p.s
en
so
r fo
r i
nle
t wa
te
r
Te
m
p.s
en
so
r fo
r re
fri
ge
ra
nt
ga
s
Tem
p.
se
nso
r f
or
re
fri
geran
t l
iqu
id
T1
Te
mp
se
ns
or fo
r s
an
ita
ry w
ate
r
T5
6
2
7
T1S
Ca
paci
ty r
equi
re
me
nts
Ta
3
4
T1
5
T1B
Ca
paci
ty r
equi
rem
ent
s (
Co
rre
ct
)
ON
34
2
1
ON
34
2
1
ON
34
2
1
IB
H
1
IB
H
2
NO
N
YE
S
YE
S
N
ON
3
4
6
7
Tp
C
apa
ci
ty
r
eq
uirem
ent
s
T3
5
T4
C
apa
ci
ty
r
eq
uirem
ent
s
(C
or
re
ct)
H
-PRO
L-
P
R
O
H
igh
pr
es
su
re s
w
itc
h
Low p
res
sure
s
w
itc
h
PT
C1
,P
TC
2
Km
1,
K
M
2
AC
c
ont
ac
to
r
Th
er
m
al r
esi
st
or
R1
-R5
Re
sist
or
M
agne
tic
ri
ng
MR
1-
MR
4
Pr
es
su
re
sensor
H-S
E
N
PR
O
_H
YD
Xt
6-X
T10
Tf
1
Tr
an
sf
or
me
r
Ter
m
in
al
b
loc
ks
FS
T
Km1
-KM2
AC
c
ont
ac
to
r
T1
B
Tem
p.s
en
so
r fo
r s
an
ita
ry w
ate
r
Tem
p.
senso
r f
or
hea
ting
/coo
ling
wat
er
T5
Fl
ow
s
w
itc
h
Fl
it
h E
H
ti
t
12
8
10
11
Tw
_i
n
T5
Tw
_out
T2B
13
9
T2
T4
S2
ON
34
2
1
ON
34
2
1
ON
OF
F
T1B
NO
N
YE
S
12
8
10
11
Th
C
om
pre
ss
or
cu
rre
nt
In
put
v
ol
tag
e
D
C
b
us
vo
lta
ge
13
9
In
put
c
urr
en
t
14
E
lec
tr
ic
e
xpa
ns
iv
e c
al
ve
--
S
TF1
T3
T4
T5
4-
W
ay va
lve
C
onde
ns
er
te
m
p.s
en
so
r
Ou
tdoo
r am
bient
tem
p.s
en
so
r
Co
m
pr
ess
or
d
isch
ar
ge
te
m
p.se
nso
r
R1
R5
SV
5
SV
6
C
has
sis
el
ec
tric
al
hea
ting
ta
pe
SV
6 v
al
ve
FS
_T
EV
_T
EX_
T
Fl
ow
sw
itc
h E
-H
ea
ting
tape
Ex
pa
ns
io
n v
alv
e
E-
H
eat
in
g t
ape
Pl
at
e h
ea
t ex
cha
nge
r E
-H
eat
in
g t
ape
Te
mp
.S
en
so
rc
od
e
T3/T4/T6(
Th)
B
25
/5
0
=41
00K ,
R
25
℃
=10
k
Ω
P
rop
ert
y
va
lue
s
Te
m
p.
Sen
so
rc
od
e
T2
/T2
B
B
25/
50
=4
10
0K
,
R
25
℃
=1
0k
Ω
P
rope
rt
y
va
lue
s
T1
/T5
/T1
B
B
397
0K
R
17
6k
Ω
Cu
rre
nt
IB
H1
14
15
16
17
18
19
Cu
rre
nt
IB
H2
La
st
fa
ul
t
La
st s
ec
on
d fa
ilu
re
La
st
th
ird
fai
lur
e
S
oftw
ar
e v
er
si
on
ON
MA
IN
CO
NT
RO
LB
O
A
R
D
SW
8
Pr
ess
ure
va
lu
e
D
C
b
us
vo
lta
ge
14
15
16
17
18
La
st
f
aul
t
S
oftw
ar
e v
er
si
on
--
Xt
1-XT
4
Ter
m
in
al
bl
oc
k
Zr
1
Vo
ltage
de
pen
de
nt
re
si
st
or
T6
Su
ct
io
n
te
m
p.
sen
sor
T5(
Tp)
B
25/
50
=3
95
0K
,
R
90
℃
=5
k
Ω
T1
/T5
/T1
B
TW
_i
n/
TW
_ou
t
B
0/
100
=397
0K
,
R
50
℃
=17
.6k
Ω
19
20
--
S
oftw
ar
e v
er
si
on
ON
3
2
1
FA
CTO
R
Y
S
E
TTI
NG
34
