Gree Livo GEN3 LIVV30HP230V1A Service & Parts Manual page 40

Display Method of Indoor Unit
Indicator Display (during
Malfunction
blinking, ON 0.5s and OFF
Dual-8
NO.
Name
0.5s)
Code
Display
Operation
Indicator
OFF 3S
Gathering
11 Fo and blink
refrigerant
1 times
Indoor
ambient
temperature
12 F1
sensor is
open/short
circuited
Indoor
evaporator
temperature
13 F2
sensor is
open/short
circuited
Outdoor
ambient
temperature
14 F3
sensor is
open/short
circuited
Outdoor
condenser
temperature
15 F4
sensor is
open/short
circuited
Outdoor
discharge
temperature
16 F5
sensor is
open/short
circuited
Limit/
decrease
17 frequency F6
due to
overload
Decrease
frequency
18 F8
due to
overcurrent
A/C status
Cool Heating
Indicator Indicator
When the outdoor unit receive
signal of Gathering refrigerant
,the system will be forced to
run under cooling mode for
gathering refrigerant
During cooling and drying
operation, indoor unit operates
OFF 3S
while other loads will stop;
and blink
during heating operation,
once
the complete unit will stop
operation.
AC stops operation once
reaches the setting
temperature. Cooling, drying:
OFF 3S
and blink internal fan motor stops
twice
operation while other loads
stop operation; heating: AC
stop operation
During cooling and drying
operating, compressor stops
OFF 3S
while indoor fan operates;
and blink
During heating operation,
3 times
the complete unit will stop
operation
During cooling and drying
operation, compressor stops
OFF 3S
while indoor fan will operate;
and blink
During heating operation,
4 times
the complete unit will stop
operation.
During cooling and drying
operation, compressor will sop
after operating for about 3
OFF 3S
mins,
and blink
while indoor fan will operate;
5 times
During heating operation, the
complete unit will stop after
operating for about 3 mins.
OFF 3S All loads operate normally,
and blink while
for 6 operation frequency for
times compressor is decreased
All loads operate normally,
OFF 3S
while
and blink
operation frequency for
8 times
compressor is decreased
37
Possible Causes
Nominal cooling mode
1. Loosening or bad contact of
indoor ambient temp. sensor and
mainboard terminal.
2. Components in mainboard fell
down leads short circuit.
3. Indoor ambient temp. sensor
damaged.(check with sensor
resistance value chart)
4. Mainboard damaged.
1. Loosening or bad contact of
Indoor
evaporator temp. sensor and
mainboard terminal.
2. Components on the mainboard
fall
down leads short circuit.
3. Indoor evaporator temp. sensor
damaged.(check temp. sensor
value
chart for testing)
4. Mainboard damaged.
Outdoor temperature sensor
hasnt been connected well or
is damaged. Please check it by
referring to the resistance table for
temperature sensor)
Outdoor temperature sensor
hasnt been connected well or
is damaged. Please check it by
referring to the resistance table for
temperature sensor)
1.Outdoor temperature sensor
hasnt been connected well or is
damaged. Please check it by
referring to the resistance table for
temperature sensor)
2.The head of temperature sensor
hasnt been inserted into the copper
tube
Refer to the malfunction analysis
(overload, high temperature
resistant)
The input supply voltage is too low;
System pressure is too high and
overload