30
LOW
VO
LTA
GE
HIG
H VOL
TAG
E
C
O
M
M
UNI
C
AT
IO
N
A
B
XYE
12
3
4
5
SL
1
SL2
ON
OF
F
N
P_
o
N
SV
2
N
12
4
6
7
5
89
18
19
Xt6
Xt7
Xt9
P_
s
N
22
23
AH
S1
AH
S2
25
26
HB
K1
35
36
Xt8
IB
H1
/2
FE
EDBAC
K
INPU
T
HB
K2
(S
W
ITC
H S
IG
NA
L I
NPU
T)
ATCO
H1
N
31
39
N
21
TBH
ON
OFF
6
7
N
21
SO
LA
R
P
U
M
P
CO
NT
RO
L
S
IGN
AL
OUT
P
UT
addi
tion
a
l
he
at
so
ur
c
e
CON
TRO
L
SIGN
AL
O
U
TP
UT
H2
N
32
39
CO
N
NEC
T
TO
SO
LA
R
PU
M
P
ST
AT
IO
N
23
0V
AC
IN
PU
T
TA
NK
B
OOS
T
H
EA
TE
R
CO
NT
RO
L
SI
G
NA
L
O
U
TPU
T
PU
MP
O
C
ONT
R
OL
SIGN
AL
OUT
P
UT
IB
H1
C
O
N
TR
OL
SIGN
AL
OUT
P
UT
IB
H2
CO
NT
R
OL
SIGN
AL
O
U
TP
UT
CO
NNEC
T
TO
W
IRE
CO
NT
RO
LE
R.
O
U
TS
IDEC
IR
C
LEP
U
MP
SV
1
SV2
PL
EASE
USE SH
IEL
DED
W
IRE
AN
D EA
RT
HT
HE W
IRE.
9
10
HT
N
A1
10
11
DH
W
EL
EC
TR
IC BACKU
P H
EAT
IN
G
SOL
AR
PUM
P
P_
c
N
16
17
add
itio
na
lh
ea
ts
ou
rc
e
MU
ST
BE CO
NN
ECTED
TO
TH
ERM
AL
PR
OTEC
TO
R!
ATCO
P_
d
N
37
38
IB
H1
IB
H2
H
13
6
7
8
SOL
AR
INP
UT
M
ethod 1:
M
ethod 2:
A1
12
14
AT
CO
:AU
TO
R
ES
ET
TH
ER
M
AL
PR
O
TEC
TO
R
C
H
3
HE
AT
L1
H
13
14
C
H
3
L1
H
13
14
C
H
3
L1
SV1
NO
RM
A
L
O
PE
N
TE
R
M
IN
A
L
NO
RM
A
L
CL
O
S
E
TERM
INA
L
NEU
TRA
L
TE
R
M
IN
A
L
ON
OFF
N
RESE
R
VE
D
RESE
R
VE
D
SV
1
RESE
R
VE
D
FU
SE
CL
O
SE
:S
HU
T
DO
W
N
M1
M2
9
10
A1
NL
1
39
40
(SW
IT
CH
SI
GN
A
L
IN
PU
T)
FU
SE
R1
R2
27
28
FU
SE
DFT1
DFT
2
33
34
P
QE
6
7
8
IB
H1
20
A1
A2
24
RT
CO
O
L
PO
WER
IN
HE
AT
M
et
ho
d 1:
M
et
hod
2:
M
et
hod 3:
RT
PO
WER
IN
RT
PO
WER
IN
RT
PO
WER
IN
Ex
te
rm
al O
N/O
FF
th
er
m
as
tat
An
tif
reeze E
-He
at
in
g
ta
pe
CO
NT
RO
L S
IG
NA
L
OU
TP
UT
PU
MP
C
C
ONT
R
OL
SIGN
AL
O
U
TP
UT
PU
MP
D
C
ONT
R
OL
SIGN
AL
O
U
TP
UT
S1
ON
OF
F
Se
quenc
e
Con
ten
t
MAI
N
BOAR
D
2
MAI
N
BOAR
D
2
S
equ
enc
e
Cont
ent
MA
IN
BO
AR
D
1
R
em
ot
e
Sh
utdow
n
REM
OTE
ALARM
Ant
ifreez
e
E-
He
ati
ng
ta
pe
RESE
R
VE
D
PU
M
PC
RUNNI
NG
DE
FRO
ST
ING
PR
O
M
PT
SI
G
NA
L
WA
TE
RT
AN
KC
IR
CU
LA
TIN
G
PU
MP
RE
SE
RV
ED
ROOM
THERM
OS
TA
T
RT
:R
OO
M
TH
ERM
OS
TA
T
P_d:
PUM
PD
1.
Po
we
r s
upp
ly of
mac
hine and
room t
her
m
os
tat
m
us
t be c
on
nec
ted t
o t
he
sam
e Neu
tral
Li
ne and
Phas
e Li
ne.
2.
For
m
or
e i
nf
or
m
at
ion
,pl
eas
e r
ef
er
to I
NS
TALL
AT
IO
N
& O
W
NER
'S M
ANU
AL.
RESE
R
VE
D
RE
SE
R
VE
D
RE
SE
R
VE
D
RE
SE
R
VE
D
3.M
ethod 1
is onl
y app
lied f
or
four
pi
pe r
oom
ther
mos
tat
.
CO
DE
PA
RT
NA
M
E
Com
pr
es
sor
CO
M
P.
Figure
2
‐
4.1:
HTW
‐
V5(7)W/D2N8
wiring
diagram
(continued))
S1
ON
34
DI
P
2
1
ON
34
DI
P
2
1
ON
DI
P
ON
34
DI
P
2
1
ON
34
DI
P
2
1
ON
DI
P
ON
OF
F
PI
P
E
T1
50
m
5m
YE
S
Sequenc
e
0
Con
ten
t
No
rm
al
di
sp
la
y :
O
FF
:0
;O
N:
T1
(S
how
TW
_out
W
hen
T1 i
nv
al
id and
inc
ludi
ng
T1
is
not
s
et
o
r
T1
faul
t)
1
M
od
e (
0/O
ff,
2/
C
ool
,3
/H
eat,
5/H
eat
w
ater
)
NO
N
2
3
0
Nor
m
al
dis
pl
ay
: O
FF
:0;
O
N
:fr
equenc
y
Capac
ity
requir
em
ent
s
1
M
od
e:
0:
Of
f; 2:
Cool
3:
Heat
;4
:F
or
ce
Cool
Fan s
peed
HEA
T1/
HE
AT
2
CT
1
AC
c
ur
rent
det
ec
tor
EE
V.
El
ec
tric
ex
pans
iv
e
val
ve
O
ut
door
fan m
ot
or
FA
N
H-
PRO
C
omp
re
sso
re
le
ct
ri
c
he
at
in
g
zo
ne
High pr
es
su
re s
w
itc
h
P
H
SEN
ON
34
DI
P
2
1
ON
34
DI
P
2
1
ON
34
DI
P
2
1
IB
H
2
S2
ON
O
FF
NO
N
YE
S
NO
N
YE
S
6
2
T1
S
C
apac
ity
req
ui
rem
en
ts
3
4
T1
5
T1
B
C
apac
ity
re
qu
irem
en
ts
(C
or
re
ct
)
IB
H
1
3
4
6
7
Tp
Capac
ity
requir
em
ent
s
T3
5
T4
Capac
ity
requir
em
ent
s
(C
orr
ect
)
L-
P
R
O
T3
T4
T
Low
pr
es
sur
e s
w
itc
h
Condens
er
t
em
p.
s
ens
or
O
ut
door
am
bi
ent
tem
p.
s
ens
or
Com
p
dis
char
ge t
em
p
s
ens
or
Pre
ssu
re
s
ens
or
H
-SEN
MR
1-
M
R
4
M
agnet
ic
r
ing
T1B
ON
34
DI
P
2
1
ON
34
DI
P
2
1
NO
N
YE
S
6
7
8
10
T1
S
Ta
T5
T2
B
9
T2
ON
34
DI
P
2
1
ON
34
DI
P
2
1
FA
CT
O
RY
SE
TTI
NG
S1
S
2
Se
tS
3t
o 0
S3
12
8
10
11
Th
TF
C
om
pr
esso
r cu
rre
nt
Inpu
t v
olt
age
13
9
Inpu
t c
ur
re
nt
E
lec
tric
ex
pans
iv
e
valv
e
4-
W
AY
Tp
4-W
ay va
lve
Com
p.
dis
char
ge t
em
p.
s
ens
or
Th
Suc
tion
tem
p.
s
ens
or
Ter
m
inal bloc
ks
XT1
XT6
-XT9
Tem
p
Sen
so
r
cod
e
P
ro
per
ty
va
lu
es
12
11
Tw
_i
n
Tw
_o
ut
13
14
15
C
ur
rent I
BH
2
T4
ON
3
2
1
M
A
IN
B
O
A
RD 1
FA
CT
ORY
S
E
TTI
NG
SW
3
Se
tS
3t
o 0
P
re
ssu
re
va
lu
e
DC bus
v
olt
age
14
15
16
17
18
Las
t f
ault
S
of
tw
are
ve
rsi
on
--
20
Tem
p.
Sen
so
r
cod
e
T2/T
2B
B
25
/50
=410
0K
, R
25
℃
=10
k
Ω
P
ro
per
ty
va
lu
es
T1/T
1B/T
5/T
W
_o
ut/T
W_i
n
B
0/100
=397
0K
, R
50
℃
=17
.6k
Ω
C
ur
rent I
BH
1
15
16
17
18
19
Las
t f
aul
t
La
st
se
co
nd
fa
ilu
re
La
st
thir
d
fail
ure
So
ftw
are
v
ers
io
n
T3/
T4/
T5/
T6
B
25/
50
=4
100K,
R
90
℃
=10k
Ω
01901
19
20
--
Tp
B
25/
50
=3
950K,
R
90
℃
=5
k
Ω
25/
50
90
℃
30
