Midea MHC-96HWD1N1(A) Service Manual page 51

MCAC-UTSM-201503
2) L1/L4 troubleshooting
Step 1: Check the DC voltage between 1 and 2 terminal, the normal value should be 510V~580V, if the
voltage is lower than 510V, go to step 2.
Step 2: Check whether the wires of rectifier circuit are loose or not. If wires are loosen, fasten the wires. If
wires are OK, replace the main PCB.
R410A Full DC Inverter Split Duct Type Technical Manual
1 2
3-Phase
bridge rectifier
Filter board
50