Midea Super DC Series User Manual

Troubleshooting
Electrical Control System 199
P0 displayed
P0 displayed
IPM module protection
IPM module protection
Yes
Is the power voltage normal?
Is the power voltage normal?
Is the outdoor terminal voltage
normal？
Is the outdoor terminal voltage
normal？
Restart the unit when the power supply
returns to normal
Restart the unit when the power supply
returns to normal
No
Yes
No
Reconnect the power
wires
Reconnect the power
wires
Yes
Is the voltage between L and N
normal？
Is the voltage between L and N
normal？
Yes
Is the input voltage of bridge
rectifier normal？
Is the input voltage of bridge
rectifier normal？
No
No
Are the power wires
connected properly?
Are the power wires
connected properly?
Reconnect L and N
Reconnect L and N
Are L and N wired
correctly?
Are L and N wired
correctly?
Reconnect the bridge
rectifier
Reconnect the bridge
rectifier
Is the bridge rectifier
properly wired?
Is the bridge rectifier
properly wired?
No
No
Yes
Replace the PFC module(If This has not been
done already)
Replace the PFC module(If This has not been
done already)
No
Is the voltage between P and
N properly wired according to
Appendix 3？
Is the voltage between P and
N properly wired according to
Appendix 3？
Replace the bridge rectifier
Replace the bridge rectifier
No
Is the bridge rectifier
operating normally?
Is the bridge rectifier
operating normally?
Are the reactor or
Inductance wired properly?
Are the reactor or
Inductance wired properly?
Reconnect the wiring
Reconnect the wiring No
Are the reactor or
inductance normal?
Are the reactor or
inductance normal?
Yes
Replace reactor or
inductance
Replace reactor or
inductance
No
Is the connecting wire between
the main board and the IPM
board connected tightly?
Is the connecting wire between
the main board and the IPM
board connected tightly?
Reconnect the main board and
IPM board
Reconnect the main board and
IPM board
No
Is the outdoor unit ventilation
in working order?
Is the outdoor unit ventilation
in working order?
Yes
Make sure that the outdoor unit is
ventilating properly
Make sure that the outdoor unit is
ventilating properly
Check whether the refrigerant system is in
working order
Check whether the refrigerant system is in
working order
No
Is the outdoor fan running
properly?
Is the outdoor fan running
properly?
Refer to the solution for themalfunction
of the fan speed being out of control .
Find the cause and resolve the problem
Refer to the solution for themalfunction
of the fan speed being out of control .
Find the cause and resolve the problem
No
Yes
No
Yes
Yes
Is the compress is running
normally?
Is the compress is running
normally?
Yes
Replace the compressor
Replace the compressorNo
Replace IPM Board. Is the problem
resolved?
Replace IPM Board. Is the problem
resolved?
Replace the outdoor main PCB. Is
the problem resolved?
Replace the outdoor main PCB. Is
the problem resolved?
No
Is the connecting wire of the
compressor is connected correctly
or tightly
Is the connecting wire of the
compressor is connected correctly
or tightly
Reconnect he connecting wire
of the compressor
Reconnect he connecting wire
of the compressor
No
Yes
Yes

Midea Super DC Series Specifications

General

Brand	Midea
Model	Super DC Series
Category	Inverter
Language	English