Midea Mini VRF Service Manual

R410A All DC Inverter Mini VRF MCAC-VTSM-2016-02
74 Troubleshooting
4.13 P5: Condenser high temperature protection
When condenser temperature is higher than 62 degrees for 3 seconds, the unit will stop operating.
When pipe temperature outside is lower than 52 degrees, the unit will resume operate.
LED displays P5
Condenser T3 high temperature protection
Check whether condenser temperature is higher than
62 degrees for 3 seconds.
NO
Check whether the resistance of condenser
temperature sensor is correct.
YES
Replace the outdoor PCB.
NO
Replace the temperature sensor
YES
Judge 1: whether outdoor temperature is too high(higher than
43 degrees)nor not
Replace outdoor PCB.
NO
Judge 2: whether heat exchanger needs cleaning.
Clean the heat exchanger
NO
Judge 3: if refrigerant pipe is blocked or not?
Clean heat exchanger
YES
YES
Remove the refrigerant pipe and then
use high pressure nitrogen or
refrigerant to blow the pipe.
Vacuumed the pipe then add the
refrigerant again.
YES
Stop the unit
NO

Midea Mini VRF Specifications

General

Brand	Midea
Model	Mini VRF
Category	Air Conditioner
Language	English