Airwell YCV280, Installation And Maintenance Instructions Manual

Page: 405 / 412

[118] compressor startup failure because of overcurrent or overheat
[119] current detecting circuit abnormal of transducer
yes
no
no
yes
replace current sensor
check if current
sensor is normal
replace inverter PCB
yes
no
no
no
yes
yes
no
correct the wiring due to diagram
replace compressor
yes
if compressor is
normal(compressor coil
resistor, insulation)
check if voltage of power
supply is normal
if power module is normal
improve power supply circuit
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
no
replace power module
yes
if PWM signal on
inverter board and IPM
driving board is ok
replace control board
compress load too much,
check the reason
check if wire between
DCCT and control board,
wire between IPM and
compressor are correct; if
wiring direction of DCCT
is normal
correct the wiring due to diagram
411