M thermal Mono
202008 71
Situation 2: L0 error appears immediately after the compressor starts up
L0
DC bus wire is not connected properly
1
Yes
Ensure DC bus wire is connected properly
No
Compressor has malfunctioned
2
Yes
Replace the compressor
No
Replace the main PCB
Notes:
1. The DC bus wire should run from the N terminal on the inverter module, through the current sensor (in the direction indicated by the arrow on the current
sensor), and end at the N terminal of capacitor. Refer to Figure 4-4.4.
Figure 4-4.4: DC bus wire connection L1L2L3,PIN- POUT
L1 L2 L3 Pin Pout
2. The normal resistances of the inverter compressor are 0.7-
differ from these specifications, the compressor has malfunctioned.
Midea CAC
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