133
[46] Discharging communication fault with IGBT Power Moudule
Re-connect
Check if communication wire
between connecting board and
module is connected normally
In cooling mode, when the indoor
unit off if the EEV can't completely
close
Measure if voltage of CN28
on connecting board changes
by multimeter
Replace module
Replace wire
Replace connecting board
N
Y
N
Y
Y
N