Multi Variable Air Conditioners Ducted Type Indoor Unit
19
(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 in
t
er
nal
part of unit;
(2)
When the unit won’t be
being
used for a long time,
disconnect the
power supply
to save
energy;
T
he 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 c
ompressor protection,
low
refrigerant
protection and refrigerant colle
c
ting 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.