Gree GWH07AFAXA-K3NNA1A Service Manual page 54

Service Manual
During operation of IDU fan motor, if controller detected that the
rotation speed of IDU fan motor less than 300/min or stop rotation,
the motor operates abnormally. In order to prevent damage to mo-
tor, controller will protect automatically, the system stops operation
and blocked information of IDU fan motor will be displayed. After
turning off the unit, display wont be displayed.
If turn on the unit again, the system will be restated up again.
Blocked information of IDU fan motor will be eliminated. (For some
models, they can only be restated up after re-energized.)
Please refer to maintenance part for display information and dis-
posal method for details.
3. Other Control Function Introduction
(1) Timer function
Controller has general timer function and clock timer function.
When you select the remote controller with general timer func-
tion, only the general timer function of controller can be activated;
when you select the remote controller with clock timer, only the
clock timer function of controller can be activated.
① General timer: The precision of general timer is 0.5hour.
24hours circulated timer Can't be set.
◆ Timer ON: Timer ON can be set at unit OFF. If selected ON
time 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: Timer OFF can be set at unit ON. If selected OFF
time is reached, the unit will stop. Time setting range is 0.5~24hr
in 30-minute increments.
② Clock timer: The precision of clock timer is 1minute. 24hours
circulated timer can be set.
◆ 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 run 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 on the remote controller. You can also
reset the timer.
If timer ON and timer OFF are set at the same time during opera-
tion of the unit, the unit will keep running at current status till OFF
time reaches. Upon ON time reached, the system will be turned
on automatically. The unit will operate circularly like that every
24hours.
If timer ON and timer OFF are set at unit OFF status, the system
keep OFF status till ON time reaches. Upon OFF time reaches,
the system will be turned OFF automatically. The unit will operate
circularly like that every 24hours.
(2) Emergency operation switch
Technical Information
If remote controller is lost or damaged, please use aux. button to
turn on or turn off the air conditioner. The operation in details is as
below: As shown in the figure, open panel and press aux. button
to turn off the air conditioner.When the air conditioner is turned on,
air inlet panel filter
it will operate under auto mode.
air outlet
(3) 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.
(4) Turbo function
Turbo function can be set under cooling and heating modes. Dur-
ing operation of turbo function, the system operates at the maxi-
mum fan speed.
(5) Dry function
Dry function can be set under cooling and drying modes. During
operation of drying function, the fan will stop operation after oper-
ating for a period of time when turning off the unit.
(6) Auto fan speed control
Auto fan speed control can be set under cooling, heating and
fan mode. During operation of auto fan speed control, the IDU
fan motor will adjust the fan speed (high, medium or low speed)
according to ambient temperature.
(7) Up&down swing control
① After energization, up & down 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 start-up of the unit,
horizontal louver will turn clockwise to position D in heating mode,
or turn clockwise to level position L in other modes.
aux. button
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