Haier HW-07LN03 User manual

Haier air conditioner Edition: 20070925
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Domestic air conditioner
SERVICE MANUAL
zFeature
zFour side air flowing
zPower Failure Compensation
zAuto Right/Left Swing
zTwo cooling/fan/dehumidifying setting
z24 hours ON/OFF
zSliding chassis design
HW-07LN03
Model
HW-12LN03
HW-09LN03

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1. Product Code Illumination and Series
introduction
1). Model code rule description
Model identification:
A: Abbreviation of Haier
B: Abbreviation of Window
C: Nominal cooling capacity (BTU/h) with the first two numbers based on one thousand unit.
D: Function code
C - Cooling only
H - Heating pump
E - Electric aided heating
E: Developing sequence
F: The type of power supply
Examples:
HW-07/09/12LN03
It represents window air conditioner. Cooling capacity is 7000/9000/12000 BTU/h and the power
supply is 220V / 50Hz.
2). Standard situation/conditions
Indoor air state outdoor air state
No. Operating condition D.B. ℃W.B. ℃D.B. ℃W.B. ℃
1 Nominal cooling 32 23 43 26
2 Nominal heating / / / /
3 Nominal electrical Heating / / / /
3) Brief introduction of window air conditioner series
1. Temperature set knob can adjust the temperature of the air in room
2. Function set knob can control the fan speed as well as the cooling speed.
3. Vent helps you to exhaust any stale unwanted air in the room and draw fresh outside air in the
room.
HW- □□ □□ □□
A B C D E F

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Content
1. Product Code Illumination and Series introduction...........................2
2. Specifications....................................................................................4
3. Main components and accessories' name........................................5
4. Printed Circuit Board Connector Wiring Diagram .............................7
5. Functions and control.......................................................................11
6. Circuit diagram................................................................................13
7. Maintenance.....................................................................................14
8. Trouble shooting ..............................................................................18
9. Installation and repairing...................................................................22
10. Compressor performance diagram..........................................................25

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2. Specification
Item HW-07LN03 HW-09LN03
Cooling capacityW2100 2500
Heating capacityW / /
Power supply 1, 220, 50 1, 220, 50
Power input W980 1000
Running current A 4.6 4.8
Cooling
EER W/W2.65 2.5
Power input W / /
Running current A / /
Heating
COP
Indoor side dB(A) 54/52 54/52
Sound Level Outdoor sidedB(A) 57/5457/54
Net 486x468x352 486x468x352
Dimension Package mm 565x568x447 565x568x447
Net 27 27
Weight Gross 32 32
ManufactureRUICHI RUICHI
Type 44R193AE-AJSC 44R233CF-AJSC
Compressor
Oil Charge ml 260 260
Heating side MPa 2.65 2.65
Pressure Cooling side MPa 0.65 0.65
Model R22
Refrigerant Charge 410 380
Indoor unit Centrifugal fanCentrifugal fan
Type Outdoor unit Axial fan Axial fan
High 1000 1000
Fan
Fan Speed Low920 920
Air volumem3360
Moisture removal 10-3m3/h
Exchanging pipe type/diameter mm / /
Fin material / /
W/W
mm
Kg
Kg
R22
g
r/min
r/min
1.2 1.2
Unit
HW-12LN03
3500
/
1, 220, 50
1250
6.5
2.8
/
/
/
54/52
58/56
560x602x380
595x685x460
33
38
RUICHI
48R313AK-5JSE
260
2.65
0.65
R22
385
Centrifugal fan
Axial fan
890
820
450
/
/
1.2
360
/
/

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3. Main components and accessories' name
Front panel
Air inlet (indoor side)
Air outlet (indoor side)
Control panel
Air inlet (outdoor side)

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1. TEMP. / TIME display
2. TEMP./TIME set
Used to set TIME or TEMP. setting.
3. MODE
Used to select operation mode: FAN, COOL, DEHUM
4. FAN SPEED
Used to select desiredfan speed:LOW or HIGH
5. TIMER
Used for TIMER start or stop.
6. SWING
Used to activate the vertical louver.This will give you an even airflow throughout the room.
7. ENERGY SAVER
This will not only save your electrical and energy costs but also shuts off the unnecessary
8. POWER
Press it to start unit and press it again to stop.
1
2
34
56
7
8
noise of the fan motor running.

4.Printed Circuit Board Connector Wiring Diagram
Connectors Indoor PCB
1)CN2 connector for room temp. sensor.
2)CN3 connector for receiver display.
3)CN8 connector for high fan.
4)CN10 connector for low fan.
5)CN11 connector for fan motor.
6)CN12 connector for louver motor.
7)CN13 connector for louver motor.
8)CN14 connector for power line.
CN2
CN10
CN8
CN14
CN12
CN11
CN13
CN3
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receiver display
5. Functions and control
5.1 Introduction to electrical control functions
Including brief introduction to air conditioners of series models and electric control function.
5.1.1 Cooling run mode:
temperature control range :16℃—30℃
temperature control precision: ±1℃
compressor can’t be controlled by temperature sensor within 2 minutes after it starts.
control character: when Tr ≥Ts, outlet air from compressor is on and indoor fan motor
run at fixed wind speed；When Ts-2 ≤Tr <Ts，outlet air from compressor keep the former
state；When Tr≤Ts-2, outlet air from compressor is off.
Manual operation: When unit is on, the wind speed can be set to high, low as required
(execute instruction 2 seconds later after receiving remote signal)
Compressor control：The compressor can’t be controlled by temperature sensor within
2 minutes after start up and can be only restarted at least 3 minutes later after shutdown.
There is no 3-minute protection with power on for the first time (over 3 minutes with power off).
The compressor must stands by for 3 minutes before it is restarted after shut down.
There is no 2-minute limit when changing the temperature setting or shutting down the
machine through the remote controller, and the machine can be shut down immediately.
Timer on, Timer off control are available.
Energysaver：When set the function, fan and swing will shutdown after compressor off
3 minutes later. This will not only save your electrical and energy costs but also shuts off the
unnecessary noise of the fan motor running.
5.1.2 Dehumidifying mode：
Temperature control range : 16℃—30℃
Control character：
Tr：temperature inside the room；Ts ：the set temperature.
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When Tr>Ts+2℃, the compressor run continuously with indoor fan motor running in
accordance with the wind speed setting.
When Ts-1 ≤Tr ≤Ts + 2 ℃, the compressor will cycle for 10 minutes on and 6 minutes off,
When Tr < Ts-1, the compressor will shut off, and the fan motor runs at low speed.
Timer on, Timer off control are available.
5.1.3 Fan mode：
The temperature set unavailable.
Fan motor running in accordance with the speed setting.
The compressor shut off.
Timer on, Timer off control are available.
5.2 Control function:
5.2.1 Self-checking function: All indicators come on and the nixie tube displays no other than
"8" at the first power-on. The unit turns to the waiting state 3 seconds later.
5.2.2 Timer function:
You can set 24-hour timer on or timer off as required, and the minum time unit is 1 hour.
After setting, the indicator of indoor unit is on , and it is off when timer setting is completed.
There are several timer mode as follows.
⑴Timer on: The LED of “timer on” lights up, and unit behaves with halt status. Timer on
is completed, and then unit starts running with the LED of “timer on” off. The unit starts with
the the last setting receiving timer signals, and sleep setting is not allowed.
⑵Timer off: Unit starts, timer indicator lights up; When reaching time setting, the
indicator goes out, unit enters shut down mode, and sleep function can be set. If timer off and
sleep are set synchronously, the one which time is short run first. Executing shutdown
instruction clear timer and sleep function.
⑶Timer on and timer off can be set only one mode at the same time.
5.2.3 Abnormity Diagnose
1. Sensor diagnose: 2 seconds after the sensors open circuit or short circuit, the unit will
turn off automatically and the LED will show E0 until the sensors resume.
2. Keystroke circuit error diagnose: When power on for the first time, the PCB will check
the keystroke circuit, if the sampling value is different with the theory value, the LED will show
E1, which means failed keystroke circuit. The keyboard is locked and so invalid, but the
remote control is working normally.
5.2.4 Power failure resume(please set and apply as necessary)
If sudden power failure occurs, the unit will resume original operation when power is
supplied again.
Note:
When sudden power failure happens during unit operation in power failure resume mode,
if the air conditioner is not desired for use in a long period, please shut off the power supply in
case that the unit automatically resume operation when power is re-supplied, or press
POWER to turn off the unit when power resumes.
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5.3 Value of Thermistor room temperature sensor
R25℃=5KΩ±1%
B25 /50℃℃=3450K±1%
Temp.(℃) Max.(KΩ) Normal(KΩ) Min.(KΩ) Tolerance(℃)
-20 38.5398 37.3992 36.2887 -1.78 1.62
-19 36.5922 35.5274 34.4900 -1.76 1.60
-18 34.7549 33.7607 32.7916 -1.74 1.59
-17 33.0211 32.0927 31.1872 -1.72 1.57
-16 31.3843 30.5172 29.6710 -1.70 1.56
-15 29.8385 29.0286 28.2377 -1.68 1.54
-14 28.3782 27.6216 26.8824 -1.66 1.53
-13 26.9981 26.2913 25.6003 -1.64 1.51
-12 25.6934 25.0330 24.3870 -1.62 1.49
-11 24.4595 23.8424 23.2384 -1.60 1.48
-10 23.2922 22.7155 22.1508 -1.58 1.46
-9 22.1875 21.6486 21.1205 -1.56 1.44
-8 21.1417 20.6380 20.1443 -1.53 1.43
-7 20.1513 19.6806 19.2189 -1.51 1.41
-6 19.2131 18.7732 18.3414 -1.49 1.39
-5 18.3241 17.9129 17.5092 -1.47 1.38
-4 17.4813 17.0970 16.7195 -1.45 1.36
-3 16.6822 16.3230 15.9700 -1.43 1.34
-2 15.9242 15.5886 15.2585 -1.40 1.32
-1 15.2050 14.8913 14.5827 -1.38 1.30
0 14.5224 14.2293 13.9408 -1.36 1.29
1 13.8757 13.6017 13.3320 -1.34 1.27
2 13.2617 13.0057 12.7534 -1.31 1.25
3 12.6786 12.4393 12.2035 -1.29 1.23
4 12.1247 11.9011 11.6806 -1.27 1.21
5 11.5983 11.3894 11.1833 -1.24 1.19
6 11.0979 10.9028 10.7102 -1.22 1.17
7 10.6221 10.4399 10.2599 -1.20 1.15
8 10.1696 9.9995 9.8313 -1.17 1.13
9 9.7390 9.5802 9.4231 -1.15 1.11
10 9.3292 9.1810 9.0343 -1.13 1.09
11 8.9391 8.8008 8.6638 -1.10 1.07
12 8.5676 8.4385 8.3107 -1.08 1.04
13 8.2137 8.0934 7.9740 -1.05 1.02
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