Midea MFA-76CRN1 Technical Manual page 88

Troubleshooting
11.3 P1 malfunction
LED indicate P1
Under heating mode, T2 is on high
temperature protection
Judge 1: Check whether the evaporator temperature
sensor T2 is break off.
Judge 2: Whether the evaporator temperature sensor
is malfunction.
Validate: Check whether the resistance of the
temperature sensor is correct according to Annex 1.
Judge 3: Check whether the outdoor ambient
temperature is too high (more than 24℃)
Replace indoor PCB
88
No
Yes
No
R410A Tropical Split Type Technical Manual
Yes
Connect it well.
No
Replace the temperature sensor
Yes
Stop the unit.
Floor-standing Type