Gree GWH(09)MA-K3DNA2B Service Manual page 19

Function and Control
2.3 Timer Change
Timer On and Timer OFF can be set via remote ON/OFF button. Timer time can be reset and the system will operate according to
the latest setting.
When the unit is on and Timer On and Timer Off are both set, the system will operate according to the set state. When the timer off
time is reached, the system will stop.
When the system stops, and Timer On and Timer Off are both set, the system will remain stop until timer on time is reached. After
that, the unit will operate according to the set mode everyday when the timer on time is reached. When the timer off time is reached,
the system will stop. If timer on time is the same as timer off time, the system will stop.
6. Memory Function
Memory contents: mode, up& down swing, light, set temperature, set fan speed, general timer (but clock timer). After power failure, if
the unit is reenergized, it will operate according to memory contents. If Timer function is not set in the last remote control, the system
will operate according to the last remote control.
If general timer function is set in the last remote control and power failure occurs before timer time is reached, the unit will operate
according to the timer function set in the last remote control. Timer time is calculated after the unit is re-energized.
If general timer function is set in the last remote control and power failure occurs after timer time is reached, the system will operate
according to the memory content before power failure. Timer operation is not memorized.
7. Health Function
When the unit is on and the indoor fan operates, press Health button to start this function (if there is no Health button, health
operation is defaulted). When indoor fan stops or turning of health function by remote controller, health function will be off.
8. I Feel Function
When the controller receives I Feel order, the controller will operate according to the ambient temperature. The remote controller will
send ambient temperature to the controller every 10min. If the controller does not receive the ambient temperature sent by remote
controller for 11min, the air conditioner will operate according the ambient temperature around it. If I Feel function is not set, the air
conditioner will operate according the ambient temperature around it. This function is not memorized upon power failure.
9. Reserved Fahrenheit Temperature
The nixie tube will display the set temperature in Celsius temperature or Fahrenheit Temperature according to the order. Setting
range is 16~30 (61~86 ). In Auto mode, it will display 25
during heating operation. For cooling only unit, it displays 25
The indoor temperature displayed is sent by remote controller, ranging from 0~60
received, the display remains the same. If valid control signal is received, it will display set temperature for 5s and then resume
displaying ambient temperature.
For units with memory function, set temperature will be displayed after re-energizing the unit.
10. Cold Plasma Function
Turning on the cold plasma function with remote controller when the fan operates, this function will act.
Turning off the cold plasma function with remote controller or turning off the fan, this function will end.
12. Defrosting Mode Switch
If there is no H1 displayed, turn on the unit with remote controller and enter "Defrosting mode 1". When the indoor unit receives
remote control signal, it will send the signal to the outdoor unit.
If there is H1 displayed, turn on the unit with remote controller and enter "Defrosting mode 2". When the indoor unit receives remote
control signal, it will send the signal to the outdoor unit.
Press mode and auxiliary heating button to switch between "Defrosting mode 1" and "Defrosting mode 2".
13. Forcible Defrosting Function
When the unit is in Heat mode and set temperature is 16 , press "+, -, +, -, +, -," successively for 5s, and the indoor unit will enter
forcible defrosting setting and send the signal to the outdoor unit.
When the indoor unit receives forcible defrosting signal from the outdoor unit, it will exit forcible defrosting setting.
14. Refrigerant Recovery Function
Enter refrigerant recovery mode: turn on the unit within 5 min after energization and at 16
light off button successively for 3 times within 3s and the unit will enter refrigerant recovery mode, displaying Fo. The signal will be
sent to the outdoor unit.
Exit refrigerant recovery mode: during refrigerant recovery, if any signal from remote controller is received or refrigerant recovery
lasts for 25min, it will exit this mode.
Action of entering refrigerant recovery mode: the indoor fan will operate in Cool mode. The fan speed is high and set temperature is
16 . The horizontal louver will be at the smallest angle.
Action of exit refrigerant recovery mode: the indoor fan will operate according to the last remote control setting.
15. Pre-operation Function
When Cool mode at 30
the outdoor unit.
Pre-operation mode: it performs cooling operation (indoor fan does not operate) and display "dd".
After exiting pre-operation mode, the indoor unit will stop displaying "dd". If the signal of "wrong wire connection or expansion valve
malfunction" is received, "dn" will be displayed.
16. Mode Conflict
When the mode of started unit is different from that of operating unit, the indoor unit will display mode conflict code "E7". The mode
sent to the outdoor unit remains the one received by the remote controller.
is set, press "-, +, -, +, -, +" successively for 3s, it will enter pre-operation mode. The signal will be sent to
(77 ) during cooling and fan operation, and display 20
(77 ).
(32~99 ). If outdoor ambient temperature is
cooling mode. Press remote controller
(68 )
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