Haier AV10IMWEWA Design, Installation & Maintenance Instruction page 278

[111] compressor out of control
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
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
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
277