Nordmann Engineering AT4 D SPA Display, Service Manual

Page: 33 / 36

33
6.3 Block diagram steam bath board
W
el
lne
ss
bo
ar
d
A
T4 D
(op
tional
)
R
EL
9
RE
L8
R
EL
7
RE
L6
R
EL
3
R
EL
2
R
EL
5
R
EL
4
Fan
1
(p
ot
ent
ia
lf
ree
cont
ac
t2
50V
/8A
)
Es
senc
e
pum
p
1
Li
ght
1
(s
el
ec
tabl
e
230V
AC
or
12
V
D
C
)
Fan
2
(pot
ent
ial
fr
ee
con
tac
t250
V
/8
A
)
Li
ght
2
(s
el
ec
tabl
e
230V
AC
or
12
V
D
C
)
Es
senc
e
pum
p
2
230V
AC
/
1A
or
12V
D
C
/
6A
S
uppl
y
Input
R
EL
1
24V
1_F
But
ton
2
(Ca
bin
lig
ht
2
O
N/
O
FF
)
But
ton
3
(S
te
am
ba
th
O
N
/O
FF
)
Tem
per
at
ur
e
(K
TY
81
222
oder
P
T100
oder
P
T1000)
To
Saf
et
y
chai
n
A
T4
P N
P1
PE
L
N PE
L
N PE
F2
L
N
N
or
G
N
D
S
uppl
y
Input
L
N
L
N
Inpu
t4
(D
oo
rc
on
ta
ctO
N
/O
FF)
CP
U
B
O
A
RD
J3
D
IE
X
T.L
IG
H
T2
AIT
EM
P
.S
E
N
S
O
R
O
R
ESE
R
VE2
O
LI
GH
T1
D
IE
X
T.D
O
O
R
O
ESS
EN
C
E
PU
M
P2
AIV
E
R
SIO
N
D
IE
X
T.L
IG
H
T1
O
LI
GH
T2
+
24V
1_M
K
O
FA
N
2
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
G
ND
D
IE
X
T.B
AT
H
O
ESS
EN
C
E
PU
M
P1
O
FA
N
1
O
R
ESE
R
VE1
DI
B
O
A
RD2
S3 S2 S1
+24V
TE
M
P
.IN
G
ND
S
C
_LV
+24V
Saf
et
y
chai
n
(low
v
ol
ta
ge)
G
ND
D
IE
X
T.
B
A
TH
D
IE
X
T.L
IG
H
T2
D
IE
X
T.L
IG
H
T1
G
ND
VC
C
A
IT
E
M
P
.S
E
N
S
O
R
010V
24V
1_F
O
L
IG
H
T1
O
LI
GH
T2
R
es
er
ve
1
(pot
ent
ial
fr
ee
cont
ac
t250
V
/8A
)
R
es
er
ve
2
(pot
en
tial
fr
ee
c
ont
ac
t250V
/8A
)
O
ES
SEN
C
E
PU
M
P1
O
ES
SEN
C
E
PU
M
P2
O
FA
N
1
O
FA
N
2
O
R
ESE
R
VE2
O
R
ESE
R
VE1
S4
But
ton
1
(Ca
bin
lig
ht
1
O
N/
O
FF
)
D
IE
X
T.
D
O
O
R
M
TA
156
G
ND
+24V
1_F
24V
1_F
G
ND
X
12
230V
A
C
/
3A
1 2 3
+5V
X2
1
1 2 3 4 5 6 7
X6
1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 5
X2
2
X2
5
X23 X2
4
1 2
X
31
9 8 7 6 5 4 3 2 1
J2
1 2 3 4
M
TA
15
6
0
VAC
15
VA
C
18
VA
C
24
V
A
C
Suppl
y
from
E
xt
er
nal
T
raf
o
5 6
NO
RE
L6
AU
X1
CO
M
RE
L6
NO
RE
L7
AU
X2
CO
M
RE
L7
V
ari
ant
1
(pot
en
tial
free
C
ont
ac
ts
)
V
ari
ant
2
(B
ridge
c
onnec
tor

fo
rs
tage
ci
rc
ui
t)
1 2
FAN 0V
A
C
FA
N
C
onnec
tio
n
(st
ag
e
ci
rcu
it)
1 2
24
VAC
0
V
A
C
Suppl
y
for
2
4V
A
C
Lam
p
(C
P
3D
)
15 VAC
24 VAC
15
VAC
18
VAC
24
VAC
0VAC
0VAC
24
VAC
68
4
11
9
13
68
4
11
13
F1
0V
A
C
9
R
V
1
40
VAC
+
24V
1_C
P/
A
T
+24
V
1_F
R
0E
5V
X2
6
X2
7
R
0E
C
P/
AT
24
V
1_
F
MK
X3
3
G
ND
+24V
2 1
X
32