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7. Wiring Diagram and Block Diagram
7.1 Wiring Diagram
(1) Current fuse ....................Overcurrent flow caused by deterioration in electrical parts or other problems
turns the power source to OFF.
<Current setting: 2A>
(2) Motor protector ................The compressor stops operating if the room temperature exceeds 35°C.
(Overload relay)
The compressor will also shut down when malfunctions or other problems
cause the current flow to exceed 5.3A.
(3) Control circuitry ...............The room temperature thermister senses temperature below about 0°C, and
shuts down the compressor.
(4) Thermal fuse ...................When blower motor temperature exceeds 133°C due to blower locking or other
malfunctions, blower operation shuts down.
Safety Devices
P1
P11
P20
P100
P2
P3
P5
P4
FM
S
C
R
CM
P200
P10
P13
SV
P201
P101
SM
White
White
Orange
Orange
Red
Red
Thermistor (Tube
temperature sensing)
1
°
C (defrost)/12
°
C (end)
Sensors
(Humidity and room
temperature sensing)
Power supply board
Blue
Brown
Gray
Gray
Gray
Gray
Blue
Blue
Blue
Black
Gray
White
Red
Yellow
Control board
Tank full switch
Power plug
Stepping motor
Run capacitor
Overload relay
Compressor
Solenoid valve
Fan motor