38
9.2 Outdoor unit error display
MROHC09AS and MROHC12AS:
After power on, LED100(Blue color) will be slow flash(0.2Hz) when the unit is in standby and
quick flash (2.5Hz) if the unit has some problems.
No.
Problems
LED301
(Green)
LED300
(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
）
Summary of Contents for MROHC09AS
Page 14: ...12 5 Wiring Diagram 5 1 Indoor Unit MWOHC09S MWOHC12S MWOHC18S ...
Page 15: ...13 MWOHC24S ...
Page 16: ...14 5 2 Outdoor Unit MROHC09AS MROHC12AS ...
Page 17: ...15 MROHC18AS ...
Page 18: ...16 MROHC24AS MROHC09AS MROHC12AS ...
Page 19: ...17 MROHC18AS ...
Page 29: ...27 T2 7 C 44 6 F the compressor frequency will not be limited ...
Page 53: ...51 Take the 9k model as example P V P U ...
Page 54: ...52 N U P W ...
Page 55: ...53 N W N V ...
