Gree GWH18TC-S3DNA1D Service Manual page 51

Upon energization or availably operating the unit or remote controller, the buzzer will give out a beep.
(4)Sleep Function
In this mode, the system will select proper sleep curve to operate according to different set temperature.
① If start up sleep function under cooling or drying mode, the system will increase set temperature automatically within a certain range
to operate.
② If start up sleep function under heating mode, the system will decrease set temperature automatically within a certain range to
operate.(5)Turbo Function
This function can be set in cooling or heating mode to quickly cool or heat the room.
(6)X-FAN Function
① When the unit is operating at COOL or DRY mode( it is not available under AUTO, HEAT, FAN modes), the X-FAN function can be
turned on/off. When it is turned on,once pressing ON/OFF button to turn off the unit, indoor fan will continue operation at low speed
for 2 minutes. Within the 2 minutes, horizontal louver will keep its previous status while cold plasma and static dedusting will be forced
to be turned on and other loads will be turned off. Then the complete unit will be turned off; When X-FAN function is set to be off,once
pressing ON./OFF button, the complete unit will be turned on immediately.
② During X-FAN operation, press X-FAN button, the indoor fan, horizontal louver, cold plasma and static-dedusting will be turned off
immediately.
(7)Control of Indoor Fan
Indoor fan can be set by remote control within the range of Mute, Fan speed 1, Fan speed 2, Fan speed 3, Fan speed 4, Fan speed
5 and Turbo and Fan will operate at low, med. high or super high speed accordingly. And also, auto fan speed can be set. Under auto
fan speed mode, indoor fan will automatically select high, med., low or mute speed according to change of ambient temperature.
① Under Auto Heat mode or regular Heat mode, auto fan speed will be as follows:
When Tamb.<Tpreset-3°C, indoor fan will operate at high speed;
When Tpreset-3°C≤Tamb.<Tpreset+2°C indoor fan will operate at med. speed;
When Tpreset+2°C≤Tamb.<Tpreset+4°C, indoor fan will operate at low fan speed;
When Tamb≥Tpreset+4°C indoor fan will operate at mute.
Control Diagram of Auto Fan Speed under HEAT Mode
② Under FAN or COOL mode: if it is auto cooling mode or regular cooling mode, auto fan speed will be as follows:
When Tamb.≥Tpreset+3°C, indoor fan will operate at high speed;
When Tpreset<Tamb.<Tpreset+3°C indoor fan will operate at med. speed;
When Tpreset-2°C<Tamb.≤Tpreset, indoor fan will operate at low speed;
When Tamb.≤Tpreset-2°C indoor fan will operate at mute;
③ There is no auto fan speed under DRY mode
Note: Fan speed "High", "Med." and "Low" are respectively corresponding to "Fan speed 5", "Fan speed 3" and "Fan speed 1". There
is 210 seconds delay for fan speed switchover of auto fan.
(8)Vertical Swing
① Small Horizontal Louver
After energization, vertical swing motor will firstly have the horizontal louver rotate anticlockwise to position O to close air outlet. If
swing function has not been set after startup of the unit, horizontal louver will turn clockwise to position D1 in HEAT mode. If swing
48
Tamb.
Tpreset +4
Tpreset +2
Tpreset -3
Mute Low Med.
Fan speed
Tamb.
Tpreset +3
Tpreset
Tpreset -2
High Med.
Fan speed
High
Low
Mute
Service Manual
Technical Information