Haier AV10IMWEWA Design, Installation & Maintenance Instruction page 282

[118] compressor startup failure because of overcurrent or overheat
check if voltage of power
supply is normal
yes
check if wire between
inverter board and IPM
driving board, and wire
between IPM and
compressor are correct; if
wiring direction of DCCT
is normal
yes
if PWM signal on
inverter board and IPM
driving board is ok
if power module is normal
if compressor is
normal(compressor coil
resistor, insulation)
compress load too much,
check the reason
[119] current detecting circuit abnormal of transducer
check if wire between
DCCT and control board,
wire between IPM and
compressor are correct; if
wiring direction of DCCT
is normal
check if current
sensor is normal
replace inverter PCB
yes
yes
yes
yes
yes
no
improve power supply circuit
no
correct the wiring due to diagram
no
replace control board
no
replace power module
no
replace compressor
no
correct the wiring due to diagram
no
replace current sensor
281