Hisense KFR-72LW Maintenance Manual page 37

Fault self-test code30
When cooling outdoor
unit overload
Is condenser overheating?
over a period of time (10
minutes) whether to lift?
no
Is the condenser
temperature sensor
resistance normal?
yes
Outdoor control board
fault and replace it
Fault self-test code32
IPM Module Fault
Is the fault removed after3
minutes and is compressor yes
running
no
Is the IPM radiator very
yes
hot?
否
Fault self-test code33
EEPROM Fault
yes Normal protection
Sensor fault and
no
replace it
Does frequent
Protection?
no
Normal protection
After a long time (30
minutes), can start after yes
the temperature drop?
no
IPM Module Fault
否
and replace it
Outdoor control board
fault and replace it
Page 36 of 37
yes
Does frequent
yes
Protection?
否
Normal protection
After replacement of outdoor
control board, the air
conditioner is running properly?
是
Outdoor filter substrate
failure and replace it
Is the IPM radiator
hotter?
是
否
Check outdoor unit air and
the installation of IPM and
radiator working closely.
Then ensure that IPM
radiator is cooling
After replacement of
outdoor control board, the
否
air conditioner is running
properly?
yes
Outdoor control
board fault and
replace it