Midea MV5-X252W/V2GN1 - 4.6 E5 Troubleshooting; 4.6.1 Digital display output; 4.6.2 Description; 4.6.3 Possible causes

V5 X VRF 50/60Hz
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Midea V5 X Series Service Manual
4.6 E5 Troubleshooting
Digital display output 4.6.1
Description 4.6.2
 Abnormal power supply voltage.
 All units stop running.
 Error code is only displayed on the unit with the error.
Possible causes 4.6.3
 Outdoor unit power supply voltage not within ±10% of rated voltage or a phase is missing.
 Loosened wiring within electric control box.
 High voltage circuit error.
 Main PCB damaged.