34
Schematics
: Main PCB
Main PCB
This illustration shows the main PCB and its terminals.
DISPLAY
DISPLAY
USB
USB
RS485
RS485
KEYB
OA
RD
KEYBO
ARD
RH/T
RH/T
RUN/FAIL
RUN/FAIL
HEAT
1/2
HEAT 1/2
ANTENNAANTENNA
GND
GND
FUSE, 2AFUSE, 2A
DIOD
E
DIOD
E
DIODE (
J1)
DIODE
(J
1)
TEMP
.
TEMP
.
TEMP
. (
J17)
TEMP
. (J
17
)
RHRH
RH
(J
27
)
RH
(J
27
)
EE
V
EE
V
8: GND8: GND
7: RESER
V
7: RESER
V
6: GND6: GND
4: GND4: GND
2: GND2: GND
5: C
OND
.
5: C
OND
.
3: EV
AP
.2
3: EV
AP
.2
1: EV
AP
.1
1: EV
AP
.1
5: C
OIL
1
5: C
OIL
1
4: C
OIL
2
4: C
OIL
2
3: C
OIL
3
3: C
OIL
3
2: C
OIL
4
2: C
OIL
4
1: +12V1: +12V
CAP
1
CAP
1
CAP
2
CAP
2
FAN
1
FAN
1
230V OUT230V OUT
FAN
2
FAN
2
230V OUT230V OU
T
CAP
3
CAP
3
FAN
3
FAN
3
230V OUT230V OUT
VA
LV
E
VA
LV
E
230V OUT230V OUT
EX
T.
FA
N
EX
T.
FA
N
230V OUT230V OUT
COMPRES.COMPRES. 230V OUT230V OUT
MAINSMAINS 230V IN230V IN
HE
AT
1
HEA
T
1
HE
AT
2
HEA
T
2
RUNRUN
FAILFAIL
J1J1
J17J17
J27J27
J3J3
J2J2
J36J36
J39J39
J38J38
J5J5
J35J35
J3
7
J37
J8J8
F1F1
J2
5
J2
5
J29J2
9
J34J34
U29U29
J28J2
8
J4J4
J2
2
J2
2
J19J1
9
J1
0
J10
11
22
33
44
11
22
33
44
11
22
33
44
11
22
33
44
55
11
22
33
44
55
66
77
88
BT
1
BT
1
BA
CK
-UP BA
TT
.
BA
CK
-UP BA
TT
.
11
22
33
44
55
66
77
88
4: GND4: GND
2: RGB GR2: RGB GR 3: RGB BU3: RGB BU
1: RGB RE1: RGB RE
230V
AC
NN
LL
LL
LL
LL
NN
NN
NN
NN
NN
NN
NN
LL
LL
NN
LL
NN
11
44
44
33
33
33
33
33
22
22
22
22
22
4: SCK4: SCK
3: SD
A
3: SD
A
2: GND2: GND
1: +5
V
1: +5V
11
1111
11
11
44
44
4444
55
55
55
66
66
77
88
EEV (
J3)
EEV (
J3)
5: C
OIL
2
5: C
OIL
2
4: C
OIL
3
4: C
OIL
3
3: C
OIL
4
3: C
OIL
4
2: +12V2: +12V
1: +12V1: +12V
EEV (
J2)
EEV (
J2)
6: C
OIL
1
6: C
OIL
1
USB (
J28
)
USB (
J28
)
TEMP
. (
J4)
TEMP
. (
J4)
RH/T (
J22
)
RH/T (
J22)
8: C
OMMON/GND
8: C
OMMON/GND
7: N.C.7: N.C.
6: N.C.6: N.C.
4: RS485_B
(T
XD0
)
4: RS485_B
(T
XD0
)
2: N.C.2: N.C.
5: N.C.5: N.C.
3: N.C.3: N.C.
1: RS485_A
(T
XD1
)
1: RS485_A
(T
XD1
)
5: RH5: RH
4: F
AIL
4: F
AIL
3: F
AIL
3: F
AIL
2: RUN2: RUN
1: RUN1: RUN
4: GND4: GND
2:
D-
2:
D-
3: D+3: D+
1:
VC
C
1:
VC
C
4: GND4: GND
3:
TH
3:
TH
2:
TH (
GND
)
2:
TH
(G
ND
)
1: +V1: +V
RUN/F
AIL
(J
19
)
RUN/F
AIL (
J19)
4: GND4: GND
3:
+
3:
+
2: GND2: GND
1:
+
1:
+
HE
AT
1/2 (
J10
)
HEA
T 1/2 (
J10)
Fig. 10
Illustration
