27
"RI-A" Contr
ol Boar
d
Re
lay
LED
Component Ener
giz
ed
LED
ON/OFF
X1
1
Defr
ost Heat
er (F
reez
er)
ON
X2
2
C
abinet Light
ON
X3
3
Ev
apor
at
or F
an Mot
or
OFF
X4
4
C
ompr
essor R
ela
y
ON
X5
5
C
ondenser F
an Mot
or
C
ondensat
e P
an Heat
er (RFH1)
ON
. C
N I S T
C
U
D
O
R
P L
O
R
T
N
O
C
7 1 3 5 5 . N
M , s i l o p a e n n i M
: E
M
A
N
: E
T A
D
: E L T I T
: # G
w
D
: V
E
R G
W
D
: V
E
R B
C
P
F J T
: E
T A
D . V
E
R
A
5 0 / 0 2 / 2 1
5 0 / 0 2 / 2 1
D
L 3 2 - 2 6 8 2
A
2 - S
O
H , A
C
P
2 1 0 0 8 8 2 3
: E
T A
D V
E
R
E
5 0 / 0 2 / 2 1
E T A
D
S
N
O I S I V
E
R F
O D
R
O
C
E
R
5 0 / 0 2 / 2 1
A
g w
D y s s A w e N
N
O I T P I R
C
S
E
D
O
C D / O
C E
V E R
•
K9 Connect
or (1
15V
A
C)
#3 1
15V
A
C po
w
er suppl
y
(b
lac
k)
#2
R
efr
ig
er
at
or and
F
reez
er
: C
ondenser
F
an Mot
or (br
own)
RH3-SSB-FG(-HG)
(aux.
code
A
-5 and lat
er
):
P
er
imet
er and Mullion
Heat
er
s (br
own)
RFH1
-SSB-HD F
reez
er
:
C
ondensat
e P
an
Heat
er (br
own)
RFH1
-SSB-HD F
reez
er
(aux.
code Q-5 and lat
er):
C
ondensat
e P
an
Heat
er and Dr
ain Heat
er
(br
own)
RFH1
-SSB(-HS)(-HSE)
F
reez
er:
Dr
ain Heat
er
, P
er
imet
er
Heat
er
, and Mullion Heat
er
(br
own)
•
K1 Connect
or (1
15V
A
C)
#1 P
ow
er S
witch Input
(b
lac
k)
#2 Open
#3 Ev
apor
at
or F
an Mot
or
(dar
k b
lue)
#4 Open
#5 C
abinet Light
(light b
lue)
Door Heat
er
(RH_-SSB-GD
fr
eez
er)
#6 Defr
ost Heat
er (fr
eez
er)
Models ma
y utiliz
e an
y
combination of the f
ollo
wing
addit
onal heat
er
s:
C
or
d Heat
er
,
Dr
ain Heat
er
, D
uct Heat
er
, and
Glass
Tube Heat
er
.
See
"VII.W
iring
Diag
rams"
for
specific model det
ails
.
#7 Open
#8 Open
#9 P
ow
er S
witch Input
(b
lac
k)
#1
0 C
ompr
essor R
ela
y
(
gra
y)
•
K5 Connect
or (5VDC)
Open
•
K4 Connect
or (5VDC)
C
abinet
Ther
mist
or (g
ra
y)
•
K3 Connect
or (5VDC)
Defr
ost
Ther
mist
or (or
ange)
•
S1 "ALARM RESET" But
ton
•
S2 "OUTPUT
TES
T" But
ton
•
K2 Connect
or
C
ontr
ol T
ransf
or
mer
(1
0V
A
C)
•
K7 Connect
or
Displa
y C
ab
le
S3 Dip S
witch
X3
X2
X1
X4
X5
•
LED 5 (X5 R
ela
y)
C
ondenser F
an Mot
or
C
ondensat
e P
an Heat
er (RFH1)
•
LED 4 (X4 R
ela
y)
C
ompr
essor R
ela
y
•
LED 1 (X1 R
ela
y)
Defr
ost Heat
er (F
reez
er)
•
LED 2 (X2 R
ela
y)
C
abinet Light
•
LED 3 (X3 R
ela
y)
Ev
apor
at
or F
an Mot
or
(Of
f when Ev
apor
at
or F
an R
ela
y Ener
giz
es)
•
K6 Connect
or (5VDC)
#1 Open
#2 & #3 Clogged F
ilt
er
Ther
most
at
(pink) (Nor
mall
y Open)
#4 & #5 C
abinet Light
(light b
lue) (Nor
mall
y Closed)
#6 & #7 High P
ressur
e S
witch
(violet) (Nor
mall
y Closed)
#1
C
ontr
ol
Tr
ansf
or
mer
(1
0V
A
C) (r
ed)
2. Control Board Layout
• "PO
WER OK" LED (r
ed)
(lights when 1
0V
A
C is
supplied t
o K2
connect
or)
"RI-A" Contr
ol Boar
d
P
ar
t Number
2A2862-24
#2
C
ontr
ol
Tr
ansf
or
mer
(1
0V
A
C) (r
ed)