Transformer
The transformer is located under the electronics cover and below the driver board. The transformer
provides low voltage power to the main board, driver board and thermostat.
To test the transformer:
Verify line voltage is present at CN204 on sub board. If line voltage is not present, suspect building
supply voltage, blown (open) fuse, a faulty sub board or a faulty driver board. If line voltage is present,
use the following chart to check the voltage output and resistance values. If values are not correct,
replace the transformer.
e
g
a
t
l
o
V
r
e
m
r
o
f
s
n
a
r
T
C
A
V
8
0
2
/
0
3
2
s
e
u
l
a
V
e
c
n
a
t
s
i
s
e
R
d
n
a
e
r
u
s
a
e
M
s
s
o
r
c
A
e
g
a
tl
o
V
t
u
p
t
u
O
e
c
n
a
t
s
i
s
e
R
o
t
k
c
a
l
B
k
c
a
l
B
n
i
e
n
i
L
3
0
1
Ω
o
t
w
o
ll
e
Y
w
o
ll
e
Y
C
A
V
2
1
0
.
1
Ω
o
t
e
ti
h
W
e
ti
h
W
C
A
V
4
2
3
.
3
Ω
Transformer
Driver Board
230/208 VAC version shown
5
4
3
2
1
230/208
VAC
RY102
FUSE (4 amp)
BL
GY
BR
RD
CN106
CN103
SUB BOARD
YL
YL
BK
BK
RY103
THERMISTORS
ROOM AIR SENSOR
MOTION SENSOR
DOOR SWITCH
CDC SWITCH
THERMOSTAT
R
Y202
SW201
CN202
DRIVER BOARD
MAIN BOARD
CN204
TR1
WH
WH
9
8
7
6
1
2
1
1
3
2
1
3
2
1
2
3
4
5
6
7
1
2
5
7
GEA01242
5
4
3
2
1
265
VAC
BL
GY
9
8
7
6
Summary of Contents for AZ75E09DAC
Page 7: ... 5 Direct Connection 208 VAC 230 VAC 265 VAC ...
Page 37: ... 35 Notes ...
Page 45: ... 43 Parts List ...
Page 46: ... 44 ...
Page 47: ... 45 ...
Page 48: ... 46 ...
Page 55: ... 53 Notes ...
