Gree GUHD series - Page 88

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85
Trouble
Code
Trouble
Name
Origin of
Trouble Signal
Control Description
E9
Full Water
Protection
Liquid level
switch
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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 Vent
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
°C
. 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 mode, only the fault will be displayed, but
the indoor unit will run normally. The fault disappears after it is eliminated.
F1
Evaporator
Temp. Sensor
Malfunction
Outdoor
evaporator
sensor
If the evaporator sensor is detected of open circuit or short circuit for 5
seconds successively: When under cooling and dry mode, the system will
be stopped. When under heating mode, all of the loads except the 4-way
valve will be stopped, while the indicator will blink or display the fault code
F1. After the fault is eliminated, the system can automatically resume to
operation and clear the fault display. Under fan mode, only the fault will be
displayed, and the indoor unit will run normally. The fault disappears after it
is eliminated.
F2
Condenser
Temp. Sensor
Malfunction
Outdoor
condenser
sensor
If the condenser sensor is detected of open circuit or short circuit for 5
seconds successively: When under cooling and dry mode, the system will
be stopped. When under heating mode, all of the loads except the 4-way
valve will be stopped, while the indicator will blink or display the fault code
F2. After the fault is eliminated, the system can automatically resume to
operation and clear the fault display. Under fan mode, only the fault will be
displayed, and the indoor unit will run normally. The fault disappears after it
is eliminated.
For cooling-only unit, the other units except the duct type will not detect the
condenser sensor fault.
F3
Outdoor
Environment
Sensor
Malfunction
Outdoor
environment
sensor
If the outdoor environment sensor is detected of open circuit or short circuit
for 5 seconds successively: When under cooling and dry mode, the system
will be stopped. When under heating mode, all of the loads except the
4-way valve will be stopped, while the indicator will blink or display the fault
code F3. After the fault is eliminated, the system can automatically resume
to operation and clear the fault display. Under fan mode, only the fault will
be displayed, and the indoor unit will run normally. The fault disappears
after it is eliminated.
F4
Malfunction of
Exhaust Temp.
Sensor
Exhaust
temperature
sensor
If the outdoor temperature sensor is detected of open circuit for 5 seconds
successively after the compressor is started: When under cooling and dry
mode, all the loads will be stopped. When under heating mode, all of the
loads except the 4-way valve will be stopped, while the indicator will blink
or display the fault code F4 and the buzzer will alarm. After the fault is
eliminated, the system can automatically resume to operation and clear the
fault code.
If the outdoor temperature sensor is detected of short circuit: When under
cooling and dry mode, all the loads will be stopped. When under heating
mode, all of the loads except the 4-way valve will be stopped, while the
indicator will blink or display the fault code F4 and the buzzer will alarm.
After the fault is eliminated, the system can automatically resume to
operation and clear the fault code.
F5
Malfunction
Of Indoor
Environment
Sensor at Wire
Controller
Wired controller
If the wired controller is detected of open circuit or short circuit for 5
seconds successively, the indoor room temperature will forcibly set to 24
°C
.
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 to
operation after the failure is eliminated. Under fan mode, only the fault will
be displayed, but the indoor unit will run normally. The fault disappears after
it is eliminated.