Service Manual
MODEL :
(Refrigerant R-410A)
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
GWH18MC-D3DNA3A
GWH24MD-D3DNA3A
ONLY FOR AUTHORIZED SERVICE PERSONNEL.
2.1 Unit Specifications.....................................................................................................................3
2.2 Operation Characteristic Curve.................................................................................................7
2.3 Capacity Variation Ratio According to Temperature................................................................8
2.4 Operation Date.............................................................................................................................8
2.5 Noise criteria curve tables for both models...............................................................................9
3.1 Indoor Unit..................................................................................................................................10
3.2 Outdo or Unit...............................................................................................................................11
5.1 Electrical wiring...........................................................................................................................14
5.2 Printed Circuit Board..................................................................................................................15
6.1 Remote Control Operations......................................................................................................17
6.2 Changing batteries and notice.....................................................................................................21
6.3 Description of each control operation........................................................................................23
10.1 Removal Procedure of Indoor Unit...........................................................................................72
10.2 Removal Procedure of Outdoor Unit......................................................................................76
Part 4 Refrigerant System Diagram........................................................................33 Part 4 Refrigerant System Diagram........................................................................33
Malfunction Analysis
Error Code List
Troubleshooting
1
Summary and features
Indoor Unit
Outdoor Unit
Remote control window
YB1FAF
Summary and features
GWH18MC-D3DNA3A
GWH24MD-D3DNA3A
GWH18MC-D3DNA1A/O
GWH24MD-D3DNA1A/O
2
1.Safety Precautions
Safety Precautions
Important!
This air conditioning system meets strict safety and
operating standards. As the installer or service person,
it is an important part of your job to install or service the
system so it operates safely and efficiently.
Follow each installation or repair step exactly as shown.
Observe all local, state, and national electrical codes.
Pay close attention to all warning and caution notices
given in this manual.
To prevent injury to the user or other people and
property damage, the following instructions must
be followed.
About the pictXUHV :
Erroneous handing gives a high possi-
bility to induce serious results such as
death or heavy injury.
Erroneous handing may induce serious
injury depending on the situation.
Do not supply power to the unit until all wiring and tubing
are completed or reconnected and checked.
Highly dangerous electrical voltages are used in this
system. Carefully refer to the wiring diagram and these
instructions when wiring. Improper connections and inad-
equate grounding can cause accidental injury or death.
Ground the unit following local electrical codes.
Connect all wiring tightly. Loose wiring may cause over-
heating at connection points and a possible fire hazard.
All electric work must be performed by licensed technician, ac-
cording to local regulations and the instructions given in this
manual.
There is risk of fire, electric shock, explosion, or injury.
Ask your dealer or specialized subcontractor for installation or
repair work.
Make sure the ceiling/wall is strong enough to hold the
unit’s weight. The outdoor unit shouOd be installed in a
location where air and noise emitted by the unit will not
disturb the neighbors.
Properly insulate any tubing run inside a room to prevent
"sweating" that can cause dripping and water damage to
walls and floors.
The outdoor unit must be installed on stable, level surface,
in a place where there is no accumulation of snow, leaves
or rubbish.
The unit should be installed according to the instructions
in order to minimize the risk of damage from earthquakes,
typhoons or strong winds.
When the refrigerant touches the fire eWc., it was decomposed
and a poisonous gas is generated.
Use only the specified refrigerant to charge the reIrigerant
circuit.
Do not mix it with any other refrigerant and do not allow air to
remain in the circuit.
Air enclosed in the circuit can cause high pressure resulting
in a rupture and other hazards.
After completing installation work, make sure that refriger-
ant gas has not leaked.
The limit density is made not to be exceeded even if the refrig-
erant leaks by any chance.
Turn the power off at the main power box (mains) before open-
ing the unit to check or repair electrical parts and wiring.
Keep your fingers and clothing away from any moving parts.
Clean up the site after you finish, remembering to check that
no metal scraps or bits of wiring have been left inside the unit
being serviced.
The unit must be properly earth connected.
Caution
Warning
Warning
Caution
Never inVtall on the place where a combustible gas might
leak. The gas may ignite or explode when the gas leaks and
collects in surround of the unit.
When the unit is installed at telecommunication centers or
hospitals, take a proper provision against noise.
When installing at a watery place, provide an electric leak
breaker.
Do not wash the unit with water.
Be very careful about unit transportation. The unit should not
be carried by only one person if it is more than 20kg. It occasion-
ally causes the damage of the unit and health to be impaired.
Do not touch the heat exchanger fins wLth your hands.
Doing so may cut your hands.
Do not touch the compressor or refrigerant piping without
wearing glove on your hands. Touching directly such part can
cause a burn or frostbite as it becomes high or low temperature
according to the refrigerant state.
Do not operate the air conditioner without the air filter set
place. Dust may accumulate, and cause a failure.
At emergency (if you smell something burning), stop opera-
tion and turn the power source switch off.
3
2.Specifications
2.1 Unit Specifications
Specific ations
The above data is subject to change without notice. Please refer to the nameplate of the unit.
tinU roodnI fo ledoM
Fan Motor Speed (r/min) (SH/H/M/L)
)W( rotoM naF fo tuptuO
)W( retaeH fo rewoP tupnI
Fan Motor Capacitor (μ )F
Fan Motor RLA(A)
eceiP-epyT naF
Diameter-Length (mm)
rotaropavE
Pipe Diameter (mm)
)mm(paG niF-woR
Coil length (l) x height (H) x coil
width (L)
ledoM rotoM gniwS
)W( rotoM gniwS fo tuptuO
)A( esuF
Sound Pressure Level dB (A)
(SH/H/M/L)
Sound Power Level dB (A)
(SH/H/M/L)
)mm ( )D/H/W( noisnemiD
Dimension
of Package (L/W/H)(
mm)
)gk( thgieW ssorG/ thgieW teN
Model
Function
Product Code
Rated Voltage
Frequency(Hz)
Total Capacity (W) Standard (Low~High)
Total Capacity (Btu/h) Standard (Low~High)
Power Input (W) Standard (Low~High)
Rated Input (W)
Rated Current (A)
Air Flow Volume (m
3
/h) (SH/H/M/L)
Dehumidifying Volume (l/h)
EER / C.O.P (W/W)
ssalC ygrenE
Indoor
unit
HEATING
7325
（
1200~7325
）
25000
（
4100~25000
）
2750
（
335~2750
）
2750
12.6
3.52
1350/1200/1050/
900
GWH18MC-D3DNA3A
COOLING
CB171N0040
208-230V~
60Hz
5275
（
1750~6550
）
18000
（
6000~22350
）
1500
（
300~2650
）
2650
12
850/780/650/550
2
2.66
0.81=REES
HSPF=10.2
（
Region
Ⅳ）
HSPF=8.8
（
Region
Ⅴ）
GWH18MC-D3DNA3A/I
1420/1250/1150/
1050
20
/
1.5
0.25
Cross flow fan – 1
Φ98X710
Aluminum fin-copper tube
Φ7
2-1.4
715X304.8X25.4
MP28VB
940X298X200
1010X285X380
13/17
2.5
PCB 3.15A Transformer 0.2A
46/44/40/35
56/54/50/45
4
The above data is subject to change without notice. Please refer to the nameplate of the unit.
Specific ations
Liquid Pipe (mm)
Gas Pipe (mm)
Height (m)
Length (m)
Outdoor
unit
Model of Outdoor Unit
Compressor
Manufacturer/trademark
Compressor Model
Compressor Type
L.R.A. (A)
Compressor RLA(A)
Compressor Power Input(W)
Overload Protector
Throttling Method
Starting Method
Working Temp Range (
℃
)
Condenser
Pipe Diameter (mm)
Rows-Fin Gap(mm)
Coil length (l) x height (H) x coil
width (L)
Fan Motor Speed (rpm) (H/M/L)
Output of Fan Motor (W)
Fan Motor RLA(A)
Fan Motor Capacitor (μF)
Air Flow Volume of Outdoor Unit
（
m
3
/h
）
Fan Type-Piece
Fan Diameter (mm)
Defrosting Method
Climate Type
Isolation
Moisture Protection
Permissible Excessive Operating
Pressure for the Discharge
Side(MPa)
Permissible Excessive Operating
Pressure for the Suction Side(MPa)
Sound Pressure Level dB (A)
Sound Power Level dB (A)
Dimension (W/H/D) ( mm)
Dimension of Package (L/W/H)(
mm)
Max Distance
Net Weight /Gross Weight (kg)
Refrigerant and Charge (k
g)
edoC tcudorP
Connecti
on Pipe
Length (m)
Gas additional charge(g/m)
Outer Diameter
5
≤
T
≤
46 -15
≤
T
≤
China Resources (Shenyang) Sanyo
CO.,LTD
C-6RZ146H1A
Twin rotary compressor
41
8.4
1640
1NT11L-3979
Electric expand valve
Transducer starting
Aluminum fin-copper tube
7
2-1.4
837X660X38.1
690/500
60
0.62
3
3200
Axial fan –1
Φ520
Auto defrost
T1
I
IP24
3.8
1.2
54
64
890X700X340
1030X460X735
Φ12
15
50/55
R410A/1.45
0210W091BC
30
8
20
Φ6
GWH18MC-D3DNA1A/O
30
5
Specifications
The above data is subject to change without notice. Please refer to the nameplate of the unit.
tinU roodnI fo ledoM
Fan Motor Speed (r/min) (SH/H/M/L)
)W( rotoM naF fo tuptuO
)W( retaeH fo rewoP tupnI
Fan Motor Capacitor (μ )F
Fan Motor RLA(A)
eceiP-epyT naF
Diameter-Length (mm)
rotaropavE
Pipe Diameter (mm)
)mm(paG niF-woR
Coil length (l) x height (H) x coil
width (L)
ledoM rotoM gniwS
)W( rotoM gniwS fo tuptuO
)A( esuF
Sound Pressure Level dB (A)
(SH/H/M/L)
Sound Power Level dB (A)
(SH/H/M/L)
)mm ( )D/H/W( noisnemiD
Dimension of Package (L/W/H)(
mm)
)gk( thgieW ssor
G/ thgieW teN
Indoor
unit
ssalC ygrenE
)h/l( emuloV gniyfidimuheD
)W/W( P.O.C / REE
)A( tnerruC detaR
Air Flow Volume (m
3
/h) (SH/H/M/L)
Power Input (W) Standard (Low~High)
)W( tupnI detaR
Total Capacity (W) Standard (Low~High)
Total Capacity (Btu/h) Standard (Low~High)
egatloV detaR
)zH(ycneuqerF
ledoM
noitcnuF
edoC tcudorP
HEATING
7618
（
1260~7618
）
26000
（
4300~26000
）
2750
（
400~2750
）
0572
5.21
25.3
1400/1150/1100/
850
1008X315X219
1073X395X313
16/21
2.5
PCB 3.15A Transformer 0.2A
48/44/40/35
58/54/50/45
Φ7
2-1.5
765X342.9X25.4
M
P35XX
GWH24MD-D3DNA3A/I
1400/1150/1100/
900
35
/
2.5
0.45
Cross flow fan – 1
Φ98X765
Aluminum fin-copper tube
0.81=REES
HSPF=10.2
(Region IV)
HSPF=8.8
(Region V)
5.2
77.2
21
950/800/700/600
1790
（
500~2650
）
0562
6300
（
2812~7325
）
21500
（
9600~25000
）
~V032-802
zH06
A3AND3D-DM42HWG
GNILOOC
0600N171BC
6
The above data is subject to change without notice. Please refer to the nameplate of the unit.
Specifications
Liquid Pipe (mm)
Gas Pipe (mm)
Height (m)
Length (m)
Outdoor
unit
Connecti
on Pipe
Outer Diameter
Max Distance
Length (m)
Model of Outdoor Unit
Compressor
Manufacturer/trademark
Compressor Model
Compressor Type
Product Code
L.R.A. (A)
Compressor RLA(A)
Compressor Power Input(W)
Overload Protector
Throttling Method
Starting Method
Working Temp Range (
℃
)
Condenser
Pipe Diameter (mm)
Rows-Fin Gap(mm)
Coil length (l) x height (H) x coil
width (L)
Fan Motor Speed (rpm) (H/M/L)
Output of Fan Motor (W)
Fan Motor RLA(A)
Fan Motor Capacitor (μF
)
Air Flow Volume of Outdoor Unit
（
m
3
/h
）
Fan Type-Piece
Fan Diameter (mm)
Defrosting Method
Climate Type
Isolation
Moisture Protection
Permissible Excessive Operating
Pressure for the Discharge
Side(MPa)
Permissible Excessive Operating
Pressure for the Suction Side(MPa)
Sound Pressure Level dB (A)
Sound Power Level dB (A)
Dimension (W/H/D) ( mm)
Dimension of Package (L/W/H)(
mm)
Net Weight /Gross Weight (kg)
Refrigerant and Charge (kg)
Gas additional charge(g/m)
5
≤
T
≤
46 -15
≤
T
≤
GWH24MD-D3DNA1A/O
China Resources (Shenyang)
Sanyo C
O.,LTD
C-6RZ146H1A
Twin rotary compressor
41
8.4
1640
1NT11L-3979
Electric expand valve
Transducer starting
Aluminum fin-copper tube
7
2-1.4
967X748X38.1
780/500
90W
0.9
4
4200
Axial fan –1
Φ552
Auto defrost
T1
I
IP24
30
8
30
54/60
R410A/1.80
CB190W0140
Φ6
Φ16
15
920X790X370
1065X485X840
3.8
1.2
56
66
30
7
Cooling Heating
0 10 20 30 40 50 60 70 90 0 10 20 30 40 50 60 70 80 90 100 120110
80
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
)A( tnerruC
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
)A( tnerruC
• Conditions
Indoor : DB26.7˚C/WB19.4˚C
Outdoor : DB35˚C/WB23.9˚C
Indoor air flow : Turbo
Pipe length : 7.6m
• Conditions
Indoor : DB21.1˚C/WB15.6˚C
Outdoor : DB8.33˚C/WB6.11˚C
Indoor air flow : Turbo
Pipe length : 7.6m
220V
230V
240V
220V
230V
240V
0 10 20 30 40 50 60 70 90 0 10 20 30 40 50 60 70 80 90 100 120110
80
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
)A( tnerruC
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
)A( tnerruC
• Conditions
Indoor : DB26.7˚C/WB19.4˚C
Outdoor : DB35˚C/WB23.9˚C
Indoor air flow : Turbo
Pipe length : 7.6m
• Conditions
Indoor : DB21.1˚C/WB15.6˚C
Outdoor : DB8˚C/WB6.11˚C
Indoor air flow : Turbo
Pipe length : 7.6m
220V
230V
240V
220V
230V
240V
Cooling Heating
2.2 Operation Characteristic Curve
Specifications
GWC18MC-D3DNA3A GWH18MC-D3DNA3A
GWC24MD-D3DNA3A GWH24MD-D3DNA3A
8
Specifications
2.3 Capacity Variation Ratio According to Temperature
Cooling Heating
32 33 34 35 36 37 38 39 43 –15 –10 –5 0 5 7 10
40 41 42
100
105
95
90
85
80
75
70
65
60
55
50
Outdoor temp. (˚C)
)%( oitar yticapaC
110
100
90
80
70
60
50
40
Outdoor temp. (˚C)
)%( oitar yticapaC
• Conditions
Indoor : DB21.1˚C/WB15.6˚C
Indoor air flow : Turbo
Pipe length : 7.6m
• Conditions
Indoor : DB26.7˚C/WB19.4˚C
Indoor air flow : Turbo
Pipe length : 7.6m
2.4 Operation Date
NOTES :
(1) Measure surface temperature of heat exchanger pipe around center of heat exchanger path U
bent. (Thermistor themometer)
(2) Connecting piping condition : 7.6 m
Cooling
Heatin
g
Standard
pressure
Indo
or Outdoor
P (MPa)
T1 (°C) T2 (°C)
18K 0.9 to 1.1 12 to 14 41 to 43 High High 62
24
K 0.8 to 1.0 10 to 12 43 to 45 High High 78
Ou
tdoor fan
mode
Compresso
r revolution
(rps)
26.7/19.4 35/–
Temperature condition
(°C)
Model
name
Heat exchanger pipe
temp.
Indo
or fan
mode
Standard
pressure
Indoo
r Outdoor
P (MPa)
T1 (°C) T2 (°C)
18K 2.2 to 2.4 37 to 38 2 to 4 High High 62
24
K 2.5 to 2.7 42 to 44 0 to 3 High High 80
Ou
tdoor fan
mode
Compresso
r revolution
(rps)
21.1
/
–
8/6.11
Temperature condition
(°C)
Model
name
Heat exchanger pipe
temp.
In
door fan
mode
P: The low side pressure measured from gas valve
T1:The coil temperature of indoor unit
T2:The coil temperature of outdoor unit
P: The high side pressure measured from gas valve
T1:The coil temperature of indoor unit
T2:The coil temperature of outdoor unit
9
2.5 Noise criteria curve tables for both models
50
40
30
Indoor side noise when blowing Outdoor side noise
Indoor fan motor rotating speed Compressor frequency/Hz
Specifications
Low Middle High Super High
10
3. Construction Views
3.1 Indoor Unit
Constrction views
Tube exit
Air inlet
Right
Left
Ceiling
W
D
H
MOD EL W(
)H(
)D(
)
18K 940 298 200
24K 1008 315 219
18K 24K
11
3.2 Outdoor Unit
18K
Constrction views
>60
c
m
m
c0
6
>
m
c
0
6
>
m
c
0
0
2
>
Bolt
Nut
Wrenc
h
340
890
700
963
560
368
396
12
24K
>60
c
m
m
c
0
6
>
m
c
0
6
>
m
c
0
0
2
>
Bolt
Nut
Wrenc
h
370
920
1000
610
399
427
790
Constrction views
13
4. Refrigerant System Diagram
Cooling & Heating Models
Refrigerant System Diagram
2-Way
valve
Strainer
Strainer
Strainer
3-Way
valve
Muffler
4-Way valve
Expansion valve
Heat exchanger
( INDOOR )
Heat exchanger
( OUTDOOR )
rotalumucca-buS
rosserpmoC
Cooling
Heating
14
5. Schematic Diagram
5.1 Electrical wiring
Schematic Diagram
Models GWH18MC-D3DNA3A GWH24MD-D3DNA3A
These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
15
5.2 Printed Circuit Board
TOP VIEW
BOTTOM VIEW
Schematic Diagram
16
TOP VIEW
BOTTOM VIEW
Schematic Diagram
23
6.3 DESCRIPTION OF EACH CONTROL OPERATION
Function and Control
1.Basic function of system
1 Cooling mode
1.Under this mode, fan motor, swing will work under setting status, the temp. range is 16-30 (61-86 Fahrenheit
scale
)
2.Outdoor
unit malfunction or unit stop running, indoor unit will keep original running status, malfunction displayed.
3.
When 0 (Tset-Tamb.), if indoor fan motor is high speed, that the fanmotorist running in middle s peed, the
middle speedor low speedwill be maintained;(this condition shouldbeexecutedwhencompressor sta rt up); the superhigh
speed
will not rotate; When (Tamb-Tset)
≥1
, the fan will return to the setting fan speed.
(2)Dehumidifying mode
1.Under t his mode, fan mo tor will run atlow speed,swing will work at setting status,settin g temp. range is16-30
(61-86
Fahrenheit scale)
2.Outdoor
unit malfunction or protection, unit will stop, indoor unit will keep original running status, malfunction
displayed.
(3)Fan mode
Under this mode, indoor fan motor could be setted at high , middle, low or auto speed, compresso, outdoor unit and
valve
will stop to run.
Under
this mode, temp. range should be 16-30 (61-86 Fahrenheit scale)
(4)Heating mode
1.Under this mode, temp. range should be 16-30 (61-86 Fahrenheit scale)
2.
Working condition and procedure of heating mode: When unit turn on and enter into Heating mode, indoor unit
enter into anti-cool wind
mode, when unit is stop running, and indoor fan motor turns on, blowing heat will act.
3.Protection
function, under heating mode, compressor will stop to run due to malfunction happened, indoor fan
motor will blow surplus heat.
4.Defrost
ing control: When receiving thedefrosting signal from outdoorunit, displayerwill display H1,10slater, indoor fan
motor will stop to run.
5.Anti-coold
wind function
6.Blow
heat air function
a.If
heating temp. meets the compressor stop running condition, compressors, outdoor fan motor will stop to run,
the
upper and lower guide louver will rotate to horizontal position L, indoor fan motor run at setting fan speed
for 60s, then the indoor fan motor will stop to run.
b.Due
to PG motor block running, the air guide board will keep the position when it stopping. (under each mode),
other
malfunction unit will stop to run, the upper and lower air guide louver will rotate to horizontal position
L, indoor fan unit will run at setting fan speed and run for 60s, indoor fan unit will stop to run.
(5)Auto mode:
1.When Tamb≥26 , select the cooling mode, at this time, the setting temp. is 25 (77 Fahrenheit scale)
2.Cooling
and heating units: Tamb ≤22 , will run at heating mode, at this time, the setting temp. is 20
(68Fahrenheit scale)
3.
Cooling only unit: When Tamb≤22 , it will run at Fan mode, the setting temp. is 25 (77 Fahrenheit scale)
4.When
23 ≤Tindoor amb. ≤ 25 ,firstly enter into auto mode and run at auto fan speed, other modes will
run
at auto mode, will keep the previous running mode. (When entering into Dehumidifying mode, it will run at
auto
fan speed)
24
2. Display state of indoor indicators
(1) State of indoor display board
1. When the unit is powered on, all patterns will be displayed and then only power indicator is on. When the unit is turned on
with a remote controller, the operating indicator is on and operation mode which is set currently is displayed.
2.
In defrosting mode, "H1" is displayed on "Double 8".
3.
Set temperature is displayed on "Double 8".
Display of operation patterns and mode patterns
When the unit is powered on, all patterns will be displayed and the standby operation indicator will become red. When the unit
is turned on through a remote controller, the operation indicator is light. At the same time, operating mode patterns (mode
indicators include cooling, heating and dehumidification modes) set currently are displayed, and dynamic display patterns of
wind speed are displayed. If the light button is switched off, all display will be turned off.
Temperature display control mode of separated air conditioner
①. When user sets the remote controller at set temperature display, currently set temperature will be displayed.
②. Only when remote signals are converted from other display states into indoor ambient temperature display state, the
remote controller will display indoor ambient temperature for 5 seconds and then return to set temperature display.
③. Only when remote signals are converted from other display states into outdoor ambient temperature display state, the
remote controller will display outdoor ambient temperature for 5 seconds and then return to set temperature display.
④. If the controller is lack of outdoor display functions, as the signal is received, set temperature will be displayed.
⑤. When the unit is turned off, temperature display will be compulsively set at given temperature by the controller. When the
unit
is turned on, patterns as set by remote signals will be displayed.
⑥. If user does not set up temperature display state, given temperature will be displayed.
(2) Failure display of indoor unit
1. Requirements for failure display
When multiple failures appear at the same time, failure protection codes shall be displayed alternatively.
① Hardware failures shall be displayed immediately, refe rring to requirements in "Failure State Display Table";
② Operation states shall be displayed immediately, referring to requirements in "Failure State Display Table";
③ Other failures shall be displayed 200s after the compressor stops, referring to requirements in "Failure State Display Table".
(Note: in the case that the unit is switched off with the remote controller, or the compressor is switched on again, failure
display waiting time (200s) shall be cleared.)
④ Frequency limitation and reduction states shall be displayed by means of remote calling.
2. Failure display control
Indicator failure display shall be kept synchronous with Double 8 failure display, that is, during indicator blinking, failure code
corresponding to such indicator shall be displayed on Double 8.
3. Method of remote calling of failure display
Enterin
g the failure remote calling mode: push the light button four times within 3s to call out relevant failure protection code;
Quit the failure remote calling mode: push the light button four times within 3s or call out failure display to enter it for 5 minutes
and
then quit.
3. Other control targets
(1)
Up and down wind blow functions: model of wind blow motor is MP28EA.
When the unit is powered on, the up and down wind blow motor will turn a wind deflector anti-clockwise to Position 0 to shut
down the air outlet. When the unit is switched on and wind blow function is not preset, under the heating mode, up and down
wind blades will turn clockwise to position D; and under other modes, the up and down wind blades will turn clockwise to
position L. If wind blow function is set at the same time as the unit is switched on, the wind blades will swing between position
L and D. The wind blades can be kept in seven states: position L, position A, position B, position C, position D, swing between
position L and D, stop at one position from L to D. When the unit is turned off, the wind deflector will be closed up to position 0.
Wind blow action is effective only when wind blow commands are set and the indoor unit is running.
Note: When the wind blades are set at position L to B, position A to C, or position B to D through
remote
setting, the wind deflector will swing between position L and D. L—A—B—C—D.
(2) Buzzer
When the controller is powered on, signals from a remote controller are received, or the auto button
is
pushed, a buzzer will give out prompt tone.
(3) Auto button
When the button is pushed, the unit will operate in auto mode and the indoor fan will run in auto state. When the indoor fan is
running, the wind blow motor will work. When the button is pushed again, the unit will be switched off. At the same time as the
button is pushed, the whole unit will be powered on and enter into fast test mode; when the unit is powered on and detects for
continuous 20s (such time shall not be fast tested) that the auto button is pushed, and if the unit is currently at fast test state,
the
unit will quit the fast test state.
Function and Control
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