General Troubleshooting - Midea AURORA ONOFF Series Service Manual

2. General Troubleshooting

2.1 Error Display (Indoor Unit)
When the indoor unit encounters a recognized error, the operation lamp will flash in a corresponding series, the timer
lamp may turn on or begin flashing, and an error code will be displayed. These error codes are described in the following
tables:
Operation Timer
Lamp Lamp
1 time OFF
2 times OFF
3 times OFF
5 times OFF
6 times OFF
7 times OFF
2 times ON
8 times OFF
9 times OFF
7 times FLASH
For some models:
Operation Timer
Lamp Lamp
1 time OFF
3 times OFF
4 times OFF
6 times OFF
6 times OFF
5 times OFF
8 times OFF
12 times OFF
2 times OFF
7 times FLASH
For other errors:
The display board may show a garbled code or a code undefined by the service manual. Ensure that this code is not a
temperature reading.
Troubleshooting:
Test the unit using the remote control. If the unit does not respond to the remote, the indoor PCB requires replacement.
If the unit responds, the display board requires replacement.
Display Error Information
Indoor unit EEPROM parameter error
E1
Zero-crossing signal detection error
E2
The indoor fan speed is operating outside of the normal range
E3
Indoor room temperature sensor T1 is in open circuit or has short
E5
circuited
Evaporator coil temperature sensor T2 is in open circuit or has short
E6
circuited
Condenser coil temperature sensor T3 or Outdoor room temperature
E7
sensor T4 is in open circuit or has short circuited(for some models)
Refrigerant leak detected
EC
The outdoor fan speed is operating outside of the normal range (for
E8
some models)
E9 Indoor / outdoor unit communication error(for some models)
High pressure protection(for some models)
P6
Display Error Information
Indoor unit EEPROM parameter error
Eh 00
Zero-crossing signal detection error
EH 02
The indoor fan speed is operating outside of the normal range
EH 03
Indoor room temperature sensor T1 is in open circuit or has short
EH 60
circuited
Evaporator coil temperature sensor T2 is in open circuit or has short
EH 61
circuited
Condenser coil temperature sensor T3 or Outdoor room temperature
EC 52
sensor T4 is in open circuit or has short circuited(for some models)
Refrigerant leak detected
EL 0C
The outdoor fan speed is operating outside of the normal range (for
EC 07
some models)
Indoor / outdoor unit communication error(for some models)
EL 01
PC 03 High pressure protection(for some models)
 Troubleshooting 3 
Solution
TS14
TS15
TS16
TS19
TS19
TS19
TS20
TS16
TS21
TS23
Solution
TS14
TS15
TS16
TS19
TS19
TS19
TS20
TS16
TS21
TS23