Hisense KFR-72LW Maintenance Manual page 35

Fault self-test code 6
Indoor fan failure
Set air-conditioner for
Air Blowing mode, and
open the air-conditioner
Indoor fan is
running?
no
The fan motor socket of
indoor control board has
voltage output?
yes
The primary resistor of indoor
fan is open-circuit and the
resistance is incorrect?
no
To confirm whether is the
motor shaft stuck and cross
flow fan running smoothly
Fault self-test code11
Brightness sensor fault
The cable between control board
and display board is bad?
no
Replacement of display
board is resolved?
no
Indoor control board
fault and replace it
Fault self-test code13
EEPROM failure
Fault self-test code21
Outdoor temperature
sensor fault
Fault self-test code22
Condensation
temperature sensor fault
Turn off the air-
yes conditioner, and the fan
stops?
no
Indoor control board
no
fault and replace it
The fan fault and
yes
replace it
Reconnect or
yes
replace the cable
Display board
yes
failure and replace it
Indoor control board
fault and replace it
The sensor resistance is
normal?
no
Sensor fault and
replace it
The sensor resistance is
normal?
no
Sensor fault and
replace it
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The fan fault and
yes
replace it
Outdoor control board
yes
fault and replace it
Outdoor control board
yes
fault and replace it