Midea MFA-12HRN1 General Information Manual page 35

MCAC-UTSM-2009-03
10.2 Outdoor Unit Malfunction
No. LED1
1
☆
2 ×
× Extinguish, Flash
☆
1. LED1 and LED3 flash
Judge 1: Check whether the wiring of communication line is break off
Judge 2: Check whether the wiring of L, N and S is wrong
Outdoor Units
LED2 LED3
×
☆
☆ ☆
LED1 and LED3 flash
In-outdoor unit communication malfunction
Replace the PCB
Malfunction
In-outdoor unit communication malfunction
T3 condenser pipe temp. sensor malfunction
No
No
Yes
Connect the wiring well
Yes
Connect the wiring of L, N and S rightly
Troubleshooting
33