Troubleshooting - Midea MFA-12HRN1 General Information Manual

MCAC-UTSM-2009-03

10. Troubleshooting

10.1 Indoor Unit Malfunction
Indoor unit display panel
No. Running lamp
1
☆
2 ×
3
☆
4 ×
5
☆
6 ☆
(× Extinguish, Flash at 5Hz,
☆
1. Running lamp flash at 5Hz
Running lamp flash at 5Hz
Judge: Room temp. sensor checking channel is abnormal
Validate: Check whether the resistance of the room
temp. sensor is correct according to Annex 1
Replace the indoor main board
Outdoor Units
Timer lamp Defrosting lamp
× ×
×
☆
☆ ☆
×
☆
●
☆
☆ ●
● Light)
Yes
Malfunction
Room temp. sensor checking channel is abnormal
Evaporator temp. sensor checking channel is abnormal
Condenser temp. sensor checking channel is abnormal
In-outdoor unit communication malfunction
DC Fan malfunction
EEPROM malfunction
No
Replace the room temp. sensor
Troubleshooting
29