Haier AV10IMWEWA Design, Installation & Maintenance Instruction page 281

[116] communication abnormal between transducer(inverter module board) and control PCB
check if wire between
control PCB and inverter board
is abnormal
no
check if communication
circuit of main control PCB is
abnormal(if signal LED
flashes abnormally)
no
if inverter module
board is abnormal
solve the failures due to
relative information
[117] transducer over current(software protection)
check if voltage of power
supply is normal
yes
check if wire of electric
box is correct
yes
if compressor is
normal(compressor coil
resistor, insulation)
if power module is normal
compressor load too much,
check the reason
no
yes
yes
yes
adjust communication wire
yes
replace main control board
detecting circuit on inverter
yes
board broken down, replace
inverter module board
no
improve power supply circuit
no
correct the wiring due to diagram
no
replace compressor
no
replace power module
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