M thermal Mono
94 200204
Midea M thermal Mono Service Manual
Situation 2: L0 error appears immediately after the compressor starts up
DC bus wire is not connected properly
1
Ensure DC bus wire is connected properly
Compressor has malfunctioned
2
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 4-4.7.
Figure 4-4.7: DC bus wire connection
（
L1L2L3,PIN- POUT
）
2. The normal resistances of the inverter compressor are 0.7-1.5Ω among U V W and infinite between each of U V W and ground. If any of the resistances
differ from these specifications, the compressor has malfunctioned.
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