Troubleshooting; Indoor Unit Error Display - Midea MS9A-05CR-QD0 Service Manual

9. Troubleshooting

9.1 Indoor unit error display

For MS9A-18CR-QB8, MS9A-18CR-QC2, MS9A-18CR-QC0(A),MS9A-18CR-PC4W(A),
MS9A-18CR-QC4(A), MS9A-22CR-QB8, MS9A-22CR-QC0 models:
Display
E1
E2
E3
E5
E6
For MS9A-05CR-QD0, MS9A-09CR-QB6(A), MS9A-09CR-QB6
Display
E1
E2
E3
E4
E5
E6
For MS9A-21HR-QB6W and MA9A-24HR-QB4W models:
Display
E1
E4
E5
E6
E7
E9
LED STATUS
EEPROM error
Zero crossing signal detection error
Indoor fan speed has been out of control
Open circuit or short circuit of room temperature sensor
Evaporator temperature sensor open circuit or short circuit
LED STATUS
EEPROM error
Zero crossing signal detection error
Indoor fan speed has been out of control
Over current protection occurs 4 times
Open circuit or short circuit of room temperature sensor
Evaporator temperature sensor open circuit or short circuit
LED STATUS
EEPROM error
Over current protection occurs 4 times
Indoor room temperature sensor open circuit or short circuit
Evaporator coil temperature sensor open circuit or short circuit
Condenser coil temperature sensor open circuit or short circuit
Indoor / outdoor units communication error
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