DC INVERTER U-MATCH AIR CONDITION MAINTENANCE
98
Trouble
Code
Trouble
Name
Origin of
Trouble Signal
Control Description
detected successively in 30 minutes from the first detection to the
occurrence of fault, the compressor cannot be recovered
automatically and the buzzer will alarm. You shall need to press
ON/Off to stop the unit and clear the sound alarm before pressing
ON/OFF again. The unit will be restarted if the high pressure
protection disappears; otherwise the fault code will be displayed.
Besides, “E5” also will also be displayed on the controller in the
event of an error of the compressor drive module.
E6
Communication
s Failure
Communication
between indoor
and outdoor
mainboard
If the outdoor unit does not receive data from indoor unit for 30
seconds successively once energized, this indicates indoor
communication failure. In this case, the compressor and outdoor fan
will be stopped. Under heating mode, the 4-way valve will be
stopped if the compressor has been stopped for 2 minutes. If the
indoor unit does not receive message from outdoor unit for 1
minute, this indicates communication failure. In this case, the indoor
unit will be stopped and the indicator will blink. If the display board
does not receive message from outdoor unit in 1 minute, it can be
judged that it is communication failure, in which case the fault will be
displayed and the machine will not function. After the
communication is resumed to normal, the system will run as per the
working mode before. This can recover automatically.
E8
Indoor Fan
Protection
Indoor fan
If indoor fan overload protection is detected for 3 seconds
successively, the compressor and fan will be immediately stopped
and the fault code E8 will be displayed, while the buzzer will alarm.
Press ON/OFF key. After the fault disappears, the fault display will
be cleared. Then, press ON/OFF key to restart the machine.
E9
Full Water
Protection
Liquid level switch
If “full water” is detected for 8 seconds successively once energized,
the system will enter into full water protection and the indicator will
blink (or display E9): Under cooling and dry mode, the outdoor fan
and compressor will be stopped, while the indoor fan will be stopped
after 1 minute. Under heating mode, the outdoor fan and
compressor will be stopped, the 4-way valve will maintain its original
state, and the indoor unit will be stopped after 1 minute. Under fan
mode, the indoor loads will not be stopped.
F0
Malfunction Of
Indoor
Environment
Sensor at
Return air
Indoor room
sensor
If the indoor sensor is detected of open circuit or short circuit for 5
seconds successively, the indoor room temperature will forcibly set
to 24 . In this case, the system will not perform any treatment, only ℃
the indicator will blink or display the fault code. The system can
automatically resume after the failure is eliminated. Under fan
To Next Page
Loading...
