140
•
T
OP VIEW
Schematic Diagram
• B
OTT
OM VIEW
PIN
PIN
1
22
2
23
3
24
4
25
5
26
6
27
7
28
8
29
9
30
10
31
11
32
12
33
13
34
14
35
15
36
16
37
17
38
IIC
18
39
IIC
19
40
20
41
21
42
1
2
3
4
5
6
7
8
9
10
Definition
Definition
Indoor unit pin definition
Ground
Reset input
Ground
Buttons input
Buzzer output
Relay control
Communication sending
Communication receiving
Remote control receiving
Reset output
PWM output
5V power supply Vcc
AD referrence voltage
AD referrence ground
Motor feedback input
Surge signal input
Surge singal output
Serial No.
Name of circuit
Testing contents
Communication circuit
Stabilized voltage supply circuit
Buzzer circuit
Commutating filter wave circuit
Displaying board displaying circuit
Reset circuit
Jumper cap ciruit
Crystal oscillatory circuit
Buzzer sound
Communication voltage and communication wave shape
Displaying the numerical design correctness
Sensor detection temperature circuit
Input IC pin voltage value
Waveform and voltage
Reset pin voltage and waveform
Impulse waveform and impulse voltage
Fan motor feedback and
driving circuit
Whether jumper cap is installed or whether it is correctly
installed
Chip power supply 5V; relay power supply 12V
Before commutating, voltage:
AC current; After commutated, voltage: DC current
Note: unnoted that the pins are suspending
Display board code control S1
Display board code control S2
Display board code control S3
Display board code control S4
Retain the swing motor control
Pin1 in advance
Retain the swing motor control
Pin2 in advance
Retain the swing motor control
Pin3 in advance
Retain the swing motor control
Pin4 in advance
Upper and lower swing motor control Pin 1
Upper and lower swing motor control Pin 2
Upper and lower swing motor control Pin 3
Upper and lower swing motor control Pin 4
Cooling/heating selection port
Display board code control G
Display board code control F
Display board code control E
Display board code control D
Display board code control C
Display board code control B
Display board code control A
Bus data port
Bus clock port
Indoor ambient temperature sampling port
Indoor tube temperature sampling port
Quick test port (retain the temperature
sampling port)
Summary of Contents for EVJC 12
Page 2: ...74 74...
Page 30: ...102...
Page 32: ...104 www johnsoncontrols com...
Page 34: ...106 by johnson controls 2...
Page 46: ...118...
Page 48: ...120 www johnsoncontrols com...
Page 49: ...121 High Wall EVHC 09 to 12 DSAAAR SERVICE MANUAL SM EVHC D 09 12GB 05 10 EVHC 09 EVHC 12...
Page 65: ...137 LULQJ LDJUDP Schematic Diagram Indoor Unit Schematic Diagram...
Page 66: ...138 Schematic Diagram Outdoor Unit...
Page 69: ...141 TOP VIEW Schematic Diagram BOTTOM VIEW 1 3 4 5 6 2 7 8 9 10 11 12 Outdoor Unit...
Page 113: ...185 Exploded View Exploded View Indoor Unit...
Page 114: ...186 Exploded View Outdoor Unit...
Page 118: ...190 High Wall EVHC 18 to 24 DSAAAR SERVICE MANUAL SM EVHC D 18 24GB 05 10 EVHC 18 EVHC 24...
Page 132: ...204 LPHQVLRQV Dimensions QGRRU 8QLW Tube exit Air inlet Right Left Ceiling W D H 02 18K 24K...
Page 133: ...205 890 340 955 560 380 424 700 60cm 60cm 60cm 60cm LPHQVLRQV Outdoor Unit Bolt Nut Spanner...
Page 140: ...212 TOP VIEW Schematic Diagram BOTTOM VIEW 1 2 3 4 5 6 7 8 9 7 8 9 10 11 12 13 1 2 3 4 5 6 10...
Page 142: ...214 Schematic Diagram Key testing spot bottom...
Page 197: ...269 Exploded View Exploded View Indoor Unit 78 Model EVKC 18 DS...
Page 198: ...270 Exploded View Model EVKC 24 DS 79...
Page 199: ...271 Exploded View Outdoor Unit 80...