Troubleshooting
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2. General Troubleshooting
2.1 Error Display (Indoor Unit)
When the indoor unit encounters a recognized error, the indicator light will flash in a corresponding series, the timer
display may turn on or begin flashing, and an error code will be displayed. These error codes are described in the
following table:
For Ceiling&floor type:
Operation
lamp
Timer
lamp
Defrosting
lamp
Alarm
lamp
Display Error Information Solution
OFF Flash OFF OFF E2
Indoor room temperature sensor T1 is in open
circuit or has short circuited
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Flash OFF OFF OFF E3
Evaporator coil temperature sensor T2 is in open
circuit or has short circuited
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OFF OFF Flash OFF E4
Condenser coil temperature sensor T3 is in
open circuit or has short circuited (except for
18k/24k/36k cooling-only models)
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Flash Flash OFF OFF E7
Indoor unit EEPROM parameter error Page 97
Flash off off Flash EC
Refrigerant leak detected Page 99
OFF OFF OFF Flash E8
Water level alarm malfunction
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For A6 Duct type:
Operation
lamp
flashes
Timer lamp Display Error Information Solution
1 time
OFF E0
Indoor unit EEPROM parameter error Page 97
5 times
OFF E4
Indoor room temperature sensor T1 is in open circuit or has
short circuited
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6 times
OFF E5
Evaporator coil temperature sensor T2 is in open circuit or
has short circuited
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7 times
OFF EC
Refrigerant leak detected Page 99
8 times
OFF EE
Water level alarm malfunction Page 98
3 times
ON F2
Condenser coil temperature sensor T3 is in open circuit or has
short circuited (except for 18k/24k/36k cooling-only models)
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11 times
ON FA
Dual chips communication malfunction -
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