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Connection on PCB
The following shows connections of connector (CN) on main PCB.
Connector Connects to Usage
Voltage
CN1 Power transformer
To supply the power to PCB.
To supply the power AC36V for
hinge sub heater
#1-2: 8.5VAC
#3-4: 18VAC
#3-5: 18VAC
CN2 Power supply To supply the power to PCB.
#1: 5VDC
#2: GND
CN4
䋤1䋭䋤2:
䋤3䋭䋤4:
Overheat protect sensor
Temperature sensor
To measure the temperature of
each parts.
CN5 CO
2
sensor Input from CO
2
sensor
#1:GND
#2:IN+
#3:IN-
#4:+15V
CN6 Door switch To detect the door opening. #1:GND
CN8 Switch, display PCB (CN101)
CN9
䋤1䋭䋤2 CO
2
valve
䋤3䋭䋤4 CO
2
auto changer valve (option)
To control CO
2
valve ON and OFF.
#1-2: 24VAC
#3-4: 24VAC
CN10
Remote alarm output
䋤1䋭䋤2 Open during normal operation
Output of remote alarm contact
#1:COM
#2:NO
#3:NC
CN11 Communication PCB (option)
CN12
䋤3䋭䋤4 Hinge sub heater (R), (L)
36VAC
CN13 Buzzer For alarm
CN14 UV lamp relay (option)
CN15 Water sensor
To check water level in humidifying
pan.
#1:VCC
#2:GND
#3:
sensor input
CN16 O
2
sensor Input from O
2
sensor
#1:+5V
#2:GND
#3:GND
#4:O
2
input
CN17
䋤1䋭䋤2 O
2
valve
䋤3䋭䋤4 O
2
valve
To control O
2
/N
2
valve ON and
OFF.
#1-2: 24VAC
#3-4: 24VAC
#5-6: 24VAC
CN101 Display PCB (CN8)
The following shows connections of connector (CN) on power PCB.
Connector Connects to Use
CN301 Main PCB
CN302
䋤1: Heater for heat control (6pcs)
䋤3: Bottom heater (4pcs)
䋤5: Front panel heater, Door heater (2pcs)
To control heater
CN303
䋤3: Agitating fan motor
To control agitating fan motor.
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