Gree KW09HQ3D6D Series, Service Manual

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Technical Information
Service Manual
1. Under heating mode: auto speed under heating or auto heating mode:
a. When T
amb.
≤T
preset
+1°C(1.8°F), indoor fan will operate at high speed;
b. When T
preset
+1°C(1.8°F)<T
amb.
<T
preset
+3°C(5.4°F), indoor fan will operate at medium speed;
c. When T
amb.
≥T
preset
+3°C(5.4°F), indoor fan will operate at low speed;
There should be at least 180s operation time during switchover of each speed.
2. Under cooling mode: auto speed under cooling or auto cooling mode:
a. When T
amb.
≥T
preset
+2°C(3.6°F), indoor fan will operate at high speed;
b. When T
preset
<T
amb.
<T
preset
+2°C(3.6°F), indoor fan will operate at medium speed;
c. When T
amb.
≤T
preset
, indoor fan will operate at low speed
There should be at least 210s operation time during switchover of each speed.
(7) Buzzer Control
The buzzer will send a “Di” sound when the air conditioner is powered up or received the information sent by the remote control or there is
a button input, the single tube cooler doesn’t receive the remote control ON signal under the mode of heating mode.
(8) Auto button
If the controller is on, it will stop by pressing the button, and if the controller is off, it will be automatic running state by pressing the button,
swing on and light on, and the main unit will run based on the remote control if there is remote control order.
(9) Up-and-Down Swinging Control
When power on, the up-and-down motor will firstly move the air
deflector to o counter-clockwise, close the air outlet.
After starting the machine, if you don’t set the swinging functi on,
heating mode and auto-heating mode, the up-and-down air deflector
will move to D clockwise; under other modes, the up-and-down air
deflector will move to L1. If you set the swinging function when you start
the machine, then the wind blade will swing between L and D. The air
deflector has 7 swinging states: Location L, Location A, Location B, Location C,
Location D, Location L to Location D, stop at any location between L-D (the included angle between L~D is the same).
The air deflector will be closed at 0 Location, and the swinging is effectual only on condition that setting the swinging order and the inner
fan is running. The indoor fan and compressor may get the power when air deflector is on the default location.
(10) Left&Right swing control(only for the mode with this function)
①
After energization, swing motor will firstly have the vertical louver rotate anticlockwise to position O to close air outlet. If swing function
has not been set after start-up of the unit, vertical louver will turn clockwise to position D in heating mode, or turn clockwise to position L in
other modes.
②
If swing function is set when turning on the unit, the vertical louver will swing between L and D.
Vertical louver has 7 swing statuses:
◆
Stay at position L: control by remote controller:
ǃ ǃ ǃ ǃ
◆
Stay at position A: control by remote controller:
ǃ ǃ ǃ ǃ
◆
Stay at position B: control by remote controller:
ǃ ǃ ǃ ǃ
◆
Stay at position C: control by remote controller:
ǃ ǃ ǃ ǃ
◆
Stay at position D: control by remote controller:
ǃ ǃ ǃ ǃ
◆
Swing between L and D: control by remote controller:
， ， ，
◆
Stop at any position between L and D (angles between L and D are equiangular), control by remote controller: OFF
③
When turning off the unit, vertical louver will close at position O.
④
Swing action is valid only when swing command has been set and the IDU fan motor is operating.
(11) Display
①
Operation pattern and mode pattern display
All the display patterns will display for a time when the power on, the operation indication pattern will display in red under standby status.
When the machine is start by remote control, the indication pattern will light and display the current operation mode (the mode light in-
cludes: Cooling, heating and dehumidify). If you close the light key, all the display patterns will close.
②
Double-8 display
According to the different setting of remote control, the nixie light may display the current temperature (the temperature scope is from 16°C
(60.8°F)to 30°C(86°F)) and indoor ambient temperature. The set temperature displayed in auto cooling and fan mode is 25°C(77°F) and
the set temperature displayed in auto heating mode is 20°C(68°F). Under heating mode, nixie tube displays H1 or heating indicator is off 0.5s
and blinks 10s in defrosting.(If you set the fahrenheit temperature display, the nixie light will display according to fahrenheit temperature)(11)
Protection function and failure display
E2: Freeze-proofing protection E4: Exhausting protecti on E5: Overcurrent protection E6: Communication failure
F1: Indoor ambient sensor start and short circuit (continuously measured failure in 5s)
e l g n a g n il o o C e l g n a g n it a e H
O(0°)
O(0°)
L
A
B
C
D
L1
A1
B1
C1
D1
e l g n a g n il o o C e l g n a g n it a e H
O(0°)
O(0°)
L
A
B
C
D
L1
A1
B1
C1
D1