Midea MIV V4+ Mini, Руководство по обслуживанию

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DM12-01.01.05en MIV V4+ Mini DC Inverter R410A (220V, 8 kW)
Outdoor units 43
12) P6 malfunction
No
No
No
LED indicates P6
IPM protection
Check whether the voltage range of P-N
on IPM module is normal? DC 310-650V
No
Check whether the input power
supply is correct? 380-415V, 3N,
50Hz 220V-240V,1N,50Hz
No Regulate it to correct,
then check whether
the system can work
normally?
Yes
Check whether the power
supply line is connected
correctly and tightly
No
Connect it correctly and
tightly, check ok or not?
No
Yes
Check whether the lines in
E-part box are connected
tightly
Connect it tightly,
check ok or not?
No
Yes
Check whether the three phase
bridge is normal?
Replace the three
phase bridge
No
Yes
Check whether the
3300µF/450V electrolytic
capacitor is normal?
No
Replace this electrolytic
capacitor
Yes
Check whether the connecting
line between main board and
the IPM module is connected
tightly
Yes
Check whether the
connecting line of the
compressor is connected
tightly
Yes
Replace the IPM module,
check whether the system
can work normally?
No
Replace the main board, check
whether the system can work
normally?
Yes
Trouble is solved
No
Replace the compressor, check
whether the system can work
normally?
Yes
Trouble is solved
Connect it
tightly, check
ok or not?
No
Connect it
tightly, check
ok or not?
Yes
Trouble is solved