[43] discharging temp. sensor Td too low protection
yes
no
yes
check if refrigerant is too
much
recharge refrigerant
yes
if the teminal of
sensor
is fixed well
reconnect
no
yes
in cooling mode,when the
indoor unit off if the EEV
can't completely close
replace or adjustment the
indoor unit EEV
if the sensor characteristic
is correct
no
replace the sensor
yes
[46] communication with inverter module failure
no
no
yes
no
replace connecting board
yes
measure if voltage of
CN28 on connecting
board changes by
multimeter
check if communication wire
between connecting board and
module is connected
normally
replace wire
replace module
re-connect
check if communication
wire is broken down
86