innovair BIN312C2V32, Service Manual

Page: 35 / 58

33
No. Problems
LED4
(Green)
LED3
(Red)
IU display
1 standby for normal O X
2 Operation normally X O
3 IPM malfunction or IGBT over-strong current protection
☆
X P0
4 Over voltage or too low voltage protection O O P1
5 Over voltage or too low voltage protection O
☆
P1
6 Inverter compressor drive error X
☆
P4
7 Inverter compressor drive error
☆
O P4
8 Inverter compressor drive error
☆ ☆
P4
O
（
light
）
X
（
off
） ☆（
2.5Hz flash
）
BIN625C2V32-O
There
’s a LED light on the outdoor PCB which is blue color.
After power on, it will be slow flash(0.2Hz) when the unit is in standby and quick flash (2.5Hz) if
the unit has some problems.