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171
COMPONENTS TESTING
Ducted units and Cassettes Printed Circuit Board (Indoor Units)
Duct
9K~18K
Hea
t
Ambient Temp
Coil Temp
Water level switch
Humidity
YL
Wifi
Wired
Output2 DISP DISP
Nano
Out
L、N Power Input
Swing
Pump
DC Fan
Output1 Step Motor
Display
Wired control
Pump motor
Swing motor
DC motor
Communication with
outdoor unit
Main control component
code
EE
WIFI
Water Level Switch
Electric
Heater
Step motor
Tem.sensor
MCU&CPU
Out Input
Switching Power Supply
AC Power Filter
Cassette
9K~36K
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