Ƴƴ
Maintanence
ƶ.Trouble Table
ƶ.1 Main Control Malfunction
Table 1 Fault Display on Indoor Wired Controller
No.
Error
Code
Malfunction Name
Origin of
malfunction signal
Control Description
1E1
High pressure
protection
High pressure switch
When outdoor unit detects the high pressure switch is cut
off for 3s successively, high pressure protection will occur. All
the loads (except the 4-way valve in heating mode) will be
switched off. In this case, all the buttons and remote control
signals except ON/OFF button will be disabled and cannot be
recovered automatically. Switch off the unit or re-energize the
unit after cutting off power to eliminate this protection.
2 E2 Freeze protection
Indoor evaporator
temperature sensor
If detecting that the evaporator temperature is lower than pro-
tective temp. value after the unit has been running for a period
of time under cooling or dry mode, the unit will report this fault,
in which case the compressor and outdoor fan motor will be
stopped. The unit will not run until evaporator temperature is
higher than the protective temp. value and the compressor is
stopped for 3min.
3E3
Low pressure
protection
Low pressure switch
If it is detected within 30s successively that the low-pressure
switch is cut off under ON or standby state, the unit will report
low pressure protection. If the fault occurs successively 3
times within 30min, the unit cannot be recovered automati-
cally.
Refrigerant lacking
protection
If the unit reports system refrigerant lacking within 10min
after turning on the unit, the unit will stop operation. If the
fault occurs successively 3 times, the unit cannot be recovered
automatically.
Refrigerant
recycling mode
If enter refrigerant recycling mode through special operation,
E3 will be displayed. After exiting refrigerant recycling mode,
the code will disappear.
4E4
Compressor high
discharge tempera-
ture protection
Compressor dis-
charge temperature
is high
If outdoor unit detects that the discharge temperature is
higher than protective temp. value, the unit will report high
discharge temperature protection. If the protection occurs over
6 times, the unit cannot be recovered automatically. Switch
off the unit or re-energize the unit after cutting off power to
eliminate this protection.
5E6
Communication
malfunction
Communication
between indoor and
outdoor main board
If the outdoor unit does not receive data from indoor unit,
communication malfunction will be reported. If there is com-
munication abnormity between display board and indoor unit,
communication malfunction will be reported too.
6E8
Malfunction of
indoor fan motor
Indoor fan motor
If the indoor unit does not receive signal from indoor fan motor
for 30s successively when the fan motor is operating, indoor
fan motor malfunction will be reported. In this case, the unit
can automatically resume operation after stopping. If the mal-
function occurs 6 times within one hour, the unit cannot be
recovered automatically. Switch off the unit or re-energize the
unit after cutting off power to eliminate this malfunction.
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