Trouble Shooting - TCL TAC-09CHSD/XAA1I Service Manual

10. Trouble shooting

10.1 Outdoor control diagram
Communication with outdoor unit
Indoor fan control
Louver motor control
Health assembly control
Temperature detection
Fan speed feedback
Electric heater control
Selection of heat and cool-only
model
Selection of data sheet
Selection of Fahrenheit and
Centigrade temperature
Selection of LED OR
without LED display
WIFI(option)
Temperature or fault code display
Emergencyl Switch signal input
Remote signal input
10.2 The structure of ODU PCB
9K 12K
Indicator
Compressor
driving
EEPROM
PFC
TCL Air Conditioner Service Manual
Indoor control system
Indoor control board
Signal input
Display pc board
Expansion
valve
Rectifying
filtering circuit
Outdoor control system
Outdoor PCB
L
Communication with indoor unit
N
Storage of working parameters
Frequency generation
Outdoor temperature detection
Communication
Outdoor fan control
wire
4-way valve control
Power ON/OFF
Voltage sampling
Fault and compressor state indication
Switch signal on top of the compressor
Chassis heating control
Outdoor power treatment
Electronic expansion valve control
Compressor drive
IPM fault output
AC rectifier
Power factor adjustment
Protection current samplin
PFC Protection current sample
Rotor position check
DC motor
Sensor
circuit
Switch power
supply
g
4-way valve
Communication
AC motor
Filter circuit
for heavy
current