Gree GWH09MA-K3NNA3F Service Manual page 29

③Protection Functions
◆Overheating Prevention Protection
If the evaporator tube temperature overheats, the outdoor fan stops operation. When the tube temperature resumes
normally, the outdoor fan resumes operation.
◆Noise Silencing Protection
If the unit is turned off by pressing ON/OFF button or during mode switchover, the 4-way valve stops after 2 minutes.
(4）Fan mode
In fan mode, indoor fan operates at setting speed while the compressor, outdoor fan, 4-way valve and electric heating tube
stop operation.
In this mode, temperature setting range is 16～30℃. The indoor unit displays operation icon and setting temperature.
(5）Auto Mode
In AUTO mode, the unit will automatically select its operation mode (cooling, heating or fan) with the change of ambient
temperature. The indoor unit displays the operation icon, operation mode icon and setting temperature. There is 30-second
delay protection for mode switchover. Protection functions are the same as those in any other modes.
3 Other Control
(1)Timer function
General timer and clock timer functions are compatible by equipping different functions of remote controller.
① General Timer
Timer ON can be set at unit OFF. If ON time setting is reached, the unit will start to operate according to previous setting
status. Time setting range is 0.5-24hr in 30-minute increments.
Timer OFF can be set at unit ON. If OFF time setting is reached, the unit will stop operation. Time setting range is 0.5-24hr
in 30-minute increments.
② Clock Timer
Timer ON
If timer ON is set during operation of the unit, the unit will continue to operate. If timer ON is set at unit OFF, upon ON time
reaches the unit will start to operate according to previous setting status.
Timer OFF
If timer OFF is set at unit OFF, the system will keep standby status. If timer OFF is set at unit ON, upon OFF time reaches
the unit will stop operation.
Timer Change
Although timer has been set, the unit still can be turned on/off by pressing ON/OFF button of remote controller. You can
also set the timer once again, and then the unit will operate according to the last setting.
If timer ON and timer OFF are set at the same time during operation of the unit, the unit will keep operating at current status
till OFF time reaches.
If timer ON and timer OFF are set at the same time at unit OFF, the unit will keep stop till ON time reaches.
In the future's every day, the system will operate according to presetting mode till OFF time reaches and stop operation till
ON time reaches. If ON time and OFF time are the same, timer OFF has the priority.
(2) Auto Button
If this button is pressed, the unit will operate in AUTO mode and indoor fan will operate at auto speed; meanwhile, the
swing motor operates. Press this button again to turn off the unit.
(3) Buzzer
Upon energization or availably operating the unit or remote controller, the buzzer will give out a beep.
(4) Sleep Function
In this mode, the unit will select the suitable sleep curve to operate according to the setting temperature.
(5)Turbo Function
This function can be set in cooling or heating mode to quickly cool or heat the room.
(6) X-Fan Function
This function can be set in COOL or DRY mode.
(7) Automatic Control of Fan Speed
In this mode, the indoor fan will automatically select high, medium or low speed with the change of ambient temperature.
(8)Up & Down Swing
After energization, up & down swing motor will firstly let the horizontal louver anticlockwise rotate to position 0 to close air
outlet.
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Function and Control