Midea MV6-i400WV2GN1-E - E5: Abnormal Power Supply Voltage

V6-i VRF 50/60Hz
78
Midea V6-i Series Service Manual
2.5 E5: Abnormal power supply voltage
Digital display output 2.5.1
Description 2.5.2
 Abnormal power supply voltage.
 All units stop running.
 Error code is only displayed on the unit with the error.
Trigger / recover condition 2.5.3
 Trigger condition: Outdoor unit power supply phase voltage < 165V.
 Recover condition: Outdoor unit power supply phase voltage is > 180V.
 Reset method: Resume automatically.
Possible causes 2.5.4
 Outdoor unit power supply voltage is abnormal or a phase is missing.
 Loosened wiring within electric control box.
 High voltage circuit error.
 Main PCB damaged.