Multi Variable Air Conditioners Ducted Type Indoor Unit
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(4) Check if any error code displayed after energized.
7.3 Maintenance after the Seasonal Use
(1) Set the unit in fan mode for half a day on a sunny day to dry the internal part of unit;
(2) When the unit won’t be being used for a long time, disconnect the power supply to save
energy; The characters on the wired controller screen will disappear after cutting off the
power supply.
8 Table of Error Codes for Indoor Unit
Number Error code Error
1 E1 Compressor high pressure protection
2 E2 Indoor anti-freeze protection
3 E3
Low pressure compressor protection, low refrigerant
protection and refrigerant collecting mode
4 E4 Compressor high discharge temperature protection
6 E6 Communication error
9 E9 Full water protection
10
11
F1 Indoor ambient temperature sensor is open/short circuited
12
F2
Indoor evaporator temperature sensor is open/short
circuited
13
F3
Outdoor ambient temperature sensor is open/short
circuited
14
F4
Outdoor condenser temperature sensor is open/short
circuited
15
F5
Outdoor discharge temperature sensor is open/short
circuited
16
H6
17
U8
18
C5
EE
5 E5
8 E8
7 E7
Loading EEPROM malfunction
Anti-high temperature protection
No feedback from indoor fan motor
Zero-crossing protection
Jumper cap malfunction protection
AC over-current protection
Mode conflict
Note: If there’re other error codes, please contact qualified professionals for service.