Midea Mini VRF Service Manual

MCAC-VTSM-2016-02 R410A All DC Inverter Mini VRF
Troubleshooting 67
4.4 E4: T3&T4 sensor malfunction
4.5 E5: Voltage protection malfunction
LED displays E4
Judge: whether the body is broken.
Replace main PCB
Judge: T3&T4 sensor malfunction
Connect the wire again.
YES
NO
Judge whether temperature sensor pin connects
properly.
YES
Connect again.
NO
NO
Replace T3/T4 sensor
YES
LED
displays
E5
Voltage protection malfunction
Judge whether the input voltage is 180-260V
NO
Replace the filter board to check whether the unit operates
normally.
Check the power supply.
YES
Replace the main PCB
YES
OK
NO

Midea Mini VRF Specifications

General

Brand	Midea
Model	Mini VRF
Category	Air Conditioner
Language	English