Gree GVH48AH-M3DNA5A User manual
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Change for Life
Service Manual
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Outdoor temp.(ć)
Capacity ratio (%)
Condition Indoor: DB27ć,WB19ć;
Indoor air flow: Super High;
Pipe length: 5m.
Capacity ratio( %)
30
40
50
60
70
80
90
100
110
120
10750-5-10-15
Outdoor Temp.( )
Condition Indoor: DB20ć,WB15ć;
Indoor air flow: Super High;
Pipe length: 5m.
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Indoor unit Outdoor unit
COOLING
HEATING
4-Way valve
Discharge
Suction
Heat
exchanger
(evaporator)
Heat
exchanger
(condenser)
Valve
Valve
Liquid pipe
side
Gas pipe
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Strainer Strainer
Accumlator
Compressor
Electronic
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Please don't touch any
electronic component or
terminal when the machine
is running,stopping or
has been powered off for
less than 30 minutes to
prevent electric shock !
NOTE:
Motor ground
only applies
to the iron
shell motor.
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E-HEATER
Buttons function and displayer
and and
●
●
●
Press this button, to turn on the unit.
When unit is turned on, the original
setting like Timer, Sleep function will
be canceled.Note: When the unit is
running in Dry mode, press ON/OFF
button that can turn on the unit directly.
ON/OFF ON/OFF Button
●When the unit start up running,
the status light will display in red
indicated as power turn-on and free-duty.
Mode Mode Button
Press the button, the circulating changes
of mode are shown as below:
Auto Cooling Dehumidification
Heating Air Supply
Auto: the controller will determine its
operation mode according to changes
of room temperatures under this mode.
Cooling: display cooling state.
Dehumidification: reduce temperature
and keep the setting room temperature
without any change.
Air supply: The compressor doesn't on
work and only the indoor blower is on
running under this mode.
Heating: Display the state of heating.
(Note: Single-cooling machine is not
equipped with heating mode)
Button
Under the situation without setting
the function, press and buttons,
the setting temperature goes up
and down 1 , the regulating range
is from 16 to 30
ć
ćć
.
Under the conditions of setting the
functions, can proceed with the
round-trip option of this function (set
and opposite direction of
circulation).
Keep pressing and buttons
for 3 seconds continuously, functions
of all buttons on the display panel
will be conductively-closed, and then
press any button, the buzzer will
ring once while "LC" is flashing for
three times on the location of double
8 and resume to normal display so
as to prompt users that the buttons
have been locked up.When keep
pressing again the two buttons for
another 3 seconds continuously,
the function of lockup will be removed
and resume to display in normal state.
Speed Function AMB. Mode ON/OFF
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Buttons function and displayer
Speed Function AMB. Mode ON/OFF
and and Buttons (Continued)
After switch-on at first time, if without
any button input:1. consecutively press
twice of buttons in 20 seconds and
soon access to the running of forced
heating.After the blades of blowing up
and down opens to the minimum position,
start up running of all loads, indoor and
outdoor high-speed blowers. All characters
will be displayed when the non-inductive
thermometer bulb is broken down. The
fault codes of breakdown will be displayed
when the inductive thermometer bulb is
broken down and then the buzzer rings.
After shutdown for five minutes or
receiving shutdown signal within 5
minutes, it enter the status of normal
standby. 2. consecutively press twice
of buttons in 20 seconds and soon
access to the running of forced cooling.
After the blades of blowing up and down
opens to the minimum position,start up
running of all loads, indoor and outdoor
high-speed blowers besides the four-
way valve and then the buzzer rings.
After shutdown for five minutes or
receiving shutdown signal within 5
minutes,it enter the status of normal
standby.
The 1 and 2 Functions are for trial use
only.
Speed Speed Button
Press this button, the speed can
shift in the circulation among of
Auto Low Medium High
Super Auto
Note: the function of forced low
speed under operation of dehumi-
dification is not available.
AMB. Button
Press this button, AMB.circulating
changes set forth below:
Energy saving Living Room
Conference/Office
Restaurant
Normal
●Adjustable method of AMB.
Button:The switch-on of AMB.mode
at first time is the default of normal
mode,when shutting down and
starting up again,the AMB. mod will
keep the setting status before last
shutting down. Under the modes of
energy-saving, conference/office
and restaurant,the sleep function
will be automatically cancelled.
And the sleep function is not
adjustable: sleep function is only
available on service for cooling,
dehumidification and heating under
normal mode.
AMB.
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Buttons function and displayer
Speed Function AMB. Mode ON/OFF
AMB. AMB. Buttons (Continued)
Under the modes of living room,
restaurant, conference/office,The
setting temperature, speed, blowing
up and down as well as left and right
can be adjustable. If users change
the setting temperature, speed,
blowing up and down as well as
left and right, the operation will run
in accordance with the status of setting
adjustment. The services setting of
blowing up and down as well as left
and right of next time start-up will be
remained before last shutdown while
the setting temperature and speed
will run with the default.
Under the energy-saving mode, while
the heating service is on running, the
setting temperature, speed, blowing
up and down as well as left and
right can be adjustable. If users
change the setting speed, blowing
up and down as well as left and right,
it will run according the status of users'
setting adjustment. But the setting
temperature under the energy-saving
cooling function can not be adjusted.
The modes of living room, restaurant,
conference/office can only be called
out by pressing buttons of air con-
ditioner panel. If receiving the sig-
nal from remote control when the
air conditioner is running the modes
of living room, restaurant, confere-
nce/office, it will exit from the abo-
vementioned modes and run acc-
ording to the modes of remote control.
Function Function Button
Under the status of switch-on, Every
●
time press the function button, the
settings of up and down, left and right,
drying, concurrent heating, timing, air
renewal, setting and room temperature
can be shifted in sequence. When a
certain character is flashing, it in-
dicates can proceed its setting and
go on setting by press buttons.
The action will be confirmed if
without receiving other operating
order in 5 seconds. Or press the
function button to leave for the confirm.
Press the function button under the
status of running drying service
can directly proceed shutdown.
Press the function button under
the status of shutdown and non-
drying can proceed timing setting.
AMB. AMB.Buttons (Continued)
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Buttons function and displayer
Speed Function AMB. Mode ON/OFF
Setting
Display setting temperature.
Room temperature
Indicate temperature of indoor
circumstances.
Supper strong
When the typeface light is on, it
indicates setting the super strong
function.
Mode of save
Indicate mode of save.
Mode of room
Indicate mode of room.
Office mode
Indicate mode of office.
SAVE
ROOM
OFFICE
Mode of restaurant
Indicate mode of restaurant.
RESTAURANT
Common mode
Indicate common mode.
COMMON
Status of swing
Display status of swing.
Swing
BLOW Function
When the typeface light is on, it
indicates setting the BLOW function.
BLOW
TIMER Function
When the typeface light is on, it
indicates setting the timer function.
TIMER
SLEEP Function
When the typeface light is on, it
indicates setting the sleep function.
SLEEP
Status of swing
Display status of swing.
Swing
●
E-HEATER
This icon on the displayer turns
on,indicates that the E-HEATER
function turned on,the electrical
heating, according to a certain
condition, it can put into use.
FunctionE-HEATER
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When Tamb.≥Tpreset+1 , the unit will run in cooling mode. Meanwhile, compressor and outdoor fan will run. Indoor fan will
run at setting fan speed;
When Tamb.≤Tpreset-1 , the unit will stop running in cooling mode. Compressor and outdoor fan will stop running, while
indoor fan is still running at setting fan speed;
When Tpreset-1 <Tam .<Tpreset+1 , the unit will keep previous running status;
1.2 Dry Mode
When Tamb>Tpreset+2 the unit will run at cooling mode. Meanwhile, compressor and outdoor fan will run. Indoor fan will
run at low fan speed.
When Tpreset-2 ≤Tamb. ≤Tpreset+2 , compressor and outdoor fan will run for 6mins and then stop running for 4mins and
they will run like that circularly. Indoor fan will run at low fan speed;
When Tamb.<Tpreset-2 , compressor and outdoor fan will stop running. Indoor fan will run at low fan speed.
When Tamb≤Tpreset-1 , the unit will run in heating mode and the corresponding load will start running. Indoor fan will run at
the condition of anti cold wind.
When Tamb.≥Tpreset+1 , the corresponding load will be stopped. Indoor fan will run at setting fan speed and the condition of
blowing residual heat.
When Tpreset<Tamb<Tpreset+1 , the unit will keep previous running status.
Indoor fan will run at setting fan speed. Compressor, outdoor fan and reversing valve will stop running.
In this mode, the unit will decide its running mode according to the ambient temperature.
When Tamb>26 , the unit will run in cooling mode. Internal setting temperature is 26 ;
When 20 ≤Tamb. ≤26 , the unit will run in dry mode. Internal setting temperature is 24 ;
When Tamb.<20 , the unit will run in heating mode. Internal setting temperature is 20 . When Tamb.≥24 , the unit will quit
from the heating mode. As for the cooling only unit, when Tamb.<20 , the unit will run at fan mode and the internal setting
temperature is 20 . When Tamb≥24 , the unit will quit from the fan mode.
2. Protection Function
When antifreezing protection is detected, the corresponding load will be stopped. After the antifreezing protection is released,
controller will run at setting mode. Buttons won’t be shielded during the antifreezing protection.
When high pressure protection is detected, the corresponding load will be stopped. All button and remote control signal will be
shielded and E1 will be displayed; after high pressure protection of compressor is released, all buttons and remote control
signal will become normal.
When low pressure protection is detected for the first time, the corresponding load will be stopped and the indicator will blink. If
the low pressure protection is detected for twice successively, the corresponding load will be stopped and E3 will be displayed.
They can’t resume automatically.
When high temperature protection for discharge pipe is detected, the corresponding load will be stopped. E4 will be displayed.
When high temperature resistant protection is detected, the corresponding load will be stopped.
When overcurrent protection is detected, the corresponding load will be stopped and E5 will be displayed.
3. Other Function
The unit will judge according to the tube temperature and ambient temperature, when it’s detected that the outdoor condenser
is frosting, the unit will start defrosting. Indoor fan and four-way valve will stop running. After defrosting is finished, the unit will
start heating normally. During the time of defrosting, dual 8 will display H1.
3.2 Swing Function
1.Basic Functions
1.1 Cooling Mode
1.3 Heating Mode
1.4 Fan Mode
1.5 Auto Mode
2.1 Indoor Antifreezing Protection
2.2 High Pressure Protection of System
2.3 Low Pressure Protection of System
2.4 High Temperature Protectionfor Discharge Pipe
2.5 Indoor High Temperature Resistant Protection
2.6 Overcurrent Protection
3.1 Defrosting
Users can start up or stop the function of up&down swing, right&left swing.
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3.3 Sleep
If the controller is in cooling or dry mode, after the sleep function is started, Tpreset will be increased but it won’t increase
over 3 . Then the unit will run at the increased temperature.
If the controller is in heating mode, after the sleep function is started, Tpreset will be decreased and it won’t decrease over
3. Then the unit will run at the decreased temperature.
Timer ON and timer OFF can be set by remote controller or buttons and the setting range is 0.5~24hrs.
Upon energization and operation, the buzzer will give out a beef.
Memory content: mode, up&dwon swing (7 statuses), right&left swing (ON/OFF), setting temperature, setting fan speed, health
,
light, timer. After power failure, the unit will run according to the memory content automatically when power recovered. If
energize the unit after power failure and the unit is turned on before power failure, the compressor will be delayed for 3mins for
protection; if the unit is turned off before power failure, the compressor won’t be delayed for 3mins for protection. If the timer is
reached before power failure, the unit will run according to the mode before power failure after power recovered; if the timer
isn’t reached, the timer will be continued and time will be recalculated.
1. Indicator control
Indicator will be in red when the unit is in standby status and it will turn to green when the unit is turned on. When any one of
the circumstances as below occurs, the green indicator will blink: compulsory heating, compulsory cooling, defrosting,
antifreezing protection, overcurrent protection, high/low voltage protection of compressor, high temperature protection of
discharge pipe.
2. Use the light button on remote controller to turn off the LED display: When cancel the “light” by remote controller, the
complete display screen will go out except the running indicator.
ON/OFF button: This button is used for control the on/off of controller. After each pressing of this button, the on/off status
will be changes for once.
Mode button: After pressing the mode button, it will be selected and display as: auto—cooling—drying—fan—heating (not
available for cooling only unit).
+and – buttons: This two buttons are used for adjusting temperature and timer;
Up&down button: This button is used for control the up&down swing motor and it will be selected and displayed as: angle
1→angle 2→angle 3 →angle 4→angle 5→to-and-fro swing →stop swing.
Fan speed button: fan speed will be selected as: auto—low—medium—high—super-high;
Right&left swing button: This button is used for control the on/off of right&left swing motor. After each pressing this button,
the on/off status of the right&left swing motor will be changed for once.
3.4 Timer
3.5 Buzzer
3.6 Power-off Memory Function
3.7 LED Display Module Control
3.8 Buttons
Table of contents
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