Samsung APH450PG User manual

SERVICE Manual
CONTENTSAIR CONDITIONER
1. Precautions
2.ProductSpecifications
3. OperatingInstructions and
Installation
4.Disassembly and Reassembly
5. Troubleshooting
6. Exploded Views andParts List
7. BlockDiagrams
8. PCBDiagrams
9. Wiring Diagrams
10. Schematic Diagrams
PACKAGED AIR CONDITIONER
APH450PG

© Samsung Electronics Co., Ltd. MAY. 1998.
Printed in Korea.
Code No. DB81-10147A(1)

1) Turn off the the power.
Be sure to turn off the power before attempting to repair the
unit such as the disassembly of the unit.
2) Be careful of electric shock
When checking the circuit with the power connected in
unavoidable circumstances, take special care not to touch the
live parts. There is a danger of electric shock.
3) Use of appropriate parts
Be sure to use the genuine parts of the relevant model when it
is necessary to replace parts. (Replace parts instead of repair-
ing with regard to the malfunctioning of electric contact areas.
Never attempt to modify the unit. It is extremely dangerous
for the consumer to attempt to repair the unit on his(her)
own.)
4) Use of proper tools
Use appropriate tools for repair, and use measuring equip-
ment after accurate calibration. Using worn tools may result
in problems, including poor contact and poor connection.
5) Avoid damage to electric wire or electric cord.
Check the electric cord or electric wire for any damage during
repair.
Be sure to replace it if damaged.
6) Avoid intermediate connection of the electric cord.
Never attempt to make an intermediate connection by cutting
the middle area of the electric cord or make a connection to
the power receptacle as it is very dangerous, causing problems
or fire.
7) Checking of insulation
Be sure to check the insulation resistance after completion of
the assembly work.
(Check whether the insulation resistance of the electric wire
and grounding terminal is over 30MΩby using the insulation
resistance tester, and then connect the power source.)
8) Checking of grounding
Check the grounding condition, and perform repair if poorly
grounded.
9) Checking of installation condition
Check the installation condition of the unit, and perform
repair if there is any defective area.
If the unit remains in an unstable installing condition, install it
at a new site.
10) Be careful of children
As the repair of the unit involves a lot of dangerous elements,
do not allow children to approach nearby during repair work.
Samsung Electronics 1-1
1. Precautions
Turn off the sub power switch separately installed.
No connection with the power receptacle
Upon completion of the repair, clean the air
conditioner and surrounding area, and
inform the customer of completion of the repair.
Cleaning

1-2 Samsung Electronics
MEMO

Samsung Electronics 2-1
2. Product Specifications
2-1 Table
ø/V/Hz
kcal/h
BTU/h
Watt/h
W
kcal/Wh
A
dBA
l/hr
m3/h
mm
mm
mm
kg
kg
inch
mm
set
3 / 380 / 50
11,250 / 12,200
45,000 / 48,800
3,000
5,000 / 4,700
2.25 / 2.60
9 / 8.7
53 / 54 63
5.8
1,920 4,800
590 / 704 930 / 1,200
1,810 / 1,925 1,240 / 1,370
420 / 600 385 / 540
75 / 85 123 / 133
14
R-22
4.8
Reciprocating
Internal thermostat (CM)
High pressure switch
Gas : 3/4”, Liquid : 3/8”
I.D 18 I.D 16
12 / 24
Power source
Capacity
(Cooling/Heating)
Aux. heater
Power consumption
E.E.R (Cooling/Heating)
Running current (C/H)
Noise level (C/H)
Moisture removal
Air circulation
Dimension Width
(Net/Packed) Height
Depth
Weight(Net/Packed)
Piping box
Refrigerant type
Refrigerant quantity
Compressor type
Protective device
Refrigerant piping size
Drain piping size
Loading Q’ty (20’/40’)
Model APH450PG
ITEM Indoor unit Outdoor unit
Indoor air temperature DB
WB
Outdoor air temperature DB
WB
APH450PG
Cooling Heating
27.0˚C(80.6˚F) 20.0˚C(68.0˚F)
19.0˚C(66.2˚F) 12.0˚C(53.6˚F)
35.0˚C(95.0˚F) 7.0˚C(44.6˚F)
24.0˚C(75.2˚F) 6.0˚C(42.8˚F)
Note: (1) The data are measured at the following conditions.

2-2 Samsung Electronics
Unit : mm
420
590 930
385
2-2 Dimensions

Samsung Electronics 3-1
3. Operating instructions and Installation
3-1 Operating Instructions
Operation Main switch operation
Operation of remote
controller
Operation of auto cool, auto heat, cool, heat, fan
Operation of turbo, cool, heat, fan
Function selection Auto cool mode
Cool mode
Fan mode
Manual 3-step
Auto
Left-right turn
Turbo operation
Convenience reservation
Function selector
Control offan motorstep according to current temperature
Auto heat mode Control offan motorstep according to current temperature
Operationof indoor fan motoronly
High,medium,low
Control offan motor stepaccording to current temperature
Turbo-operatingcompressorandpowerful operatingfan
motor(30minutes)
Reserve functionwhichisoff after ontime of 1, 2, 3, 4,or5
hours
Auto cool, auto heat, cool, heat, turbo, fan lamp
Selection of fan speed Low, medium, high lamp
Selection of airflow Left-right lamp
Current temperature Indoor temperature display
Desired temperature Desired temperature display
Fan speed diagram Low, medium, high, turbo lamp
Convenience reservation Reserve lamp and reserve time display
Current time Current time display
Control ofcoolaccording tothe differencebetweencurrent
anddesiredtemperature
Heat mode Control ofcoolaccording tothe differencebetweencurrent
anddesiredtemperature
Fan speed
selector mode
Airflow selector
mode
Convenience function
LED display
function

3-2 Samsung Electronics
Key name Key operating function Key type
On/off Start and end of operation TACT
- ON 1 time = operation start, ON again = operation end.
- No continued operation
Mode selection Change of the operation mode TACT
- Each time the button is pressed(ON), the mode is changed in the following order:
“auto →cool →fan”(standard=auto)
- No continued operation
Fan speed Setting of the indoor fan motor speed TACT
selection - Each time the button is pressed ON, the mode is changed in the following order:
“low →medium →high”(standard=high)
Temperature(time) Increase the desired temperature(current time) TACT
setting(up) - Temperature: When pressing the button(ON) one time,
the desired temperature is increased by the unit of 1°C.(18°C- 30°C)
- Time: When pressing the button(ON) one time, the time is increased by 1 minte.
If the “on” button is pressed continuously, the time is increased by 10 minutes.
- One short, and continued operation
Temperature(time) Decrease the desired temperature (current time) TACT
setting(down) - Temperature: When pressing the button(ON) one time,
the desired temperature is decreased by the unit of 1°C. (18°C - 30°C)
- Time: When pressing the button(ON) one time, the time is decreased by 1 minute.
If the “on” button is pressed continuously, the time is decreased by 10 minutes.
- One short, and continued operation
Change of display The temperature and current time can be changed. TACT
- If the “on” key is pressed 1 time, current temperature
and desired temperature are displayed.
- If the “on” key is pressed 1 time, current time is displayed.
Brief reservation The hours of 1,2,3,4 and 5 is selected whenever one time of on is performed. TACT
Heater on/off selection If the switch is selected to the on direction, the heater is operating at the heater SLIDE
operation condition.
The heater is not operating when the switch is selected to the off position.
* Operating functions
Fan Speed
adjustment
3-2 Key type and functions
3-2-1 PANEL key type and functions
Fan Speed
display Time/Temperature
display Operating Light Remote control
Sensor On/Off Button
Time/Temperature
Selection Time or Temperature adjustment
Operating
Mode Selection Timer
adjustment
Auxiliary Heater
Switch (option)
Power Light

Samsung Electronics 3-3
3-3 Accessory Parts List
3-3-1 Connection Parts 3-3-2 Others
No.
1
2
1
1
1
1
1
1
1
1
2
1
1
3
4
5
6
7
8
9
10
11
Part Name Q’ty Remarks No.
14
24
4
3
4 1
54
64
75
83
93
10 1
11 1
12 1
Part Name Q’ty Remarks
Connecting pipe
Connecting pipe
Heater cable (3 strand)
Protection tube
Connecting wire (7 strand)
Wire of sensor (2 strand)
Power cable
Drain hose
Finishing tape
Insulation tape
Insulation tube for indoor
unit piping connection
3/8”
(ø9.52mm)
3/4”
(ø19.05mm)
Option
(Piping box)
Piping box
Leg holder for indoor unit
Screw
Cable clamp
Indoor unit fixing holder
Piping box
Piping box
Leg holder for outdoor unit
Insulation rubber bottom
Cable tie
Putty
Pipe band
Rubber cabi slot
Rubber cabi hole
Drain plug out
TH M4 X 12
TH M4 X 25
12N
8N
6N
2
3
1
Option(Pipingbox)

3-4 Samsung Electronics
3-4 Installation
3-4-1 Selection of Installation Place
3-4-1(a) Indoor Unit
3-4-1(b) Outdoor Unit
*If there is any unavoidable reason to install the unit at such
a place, take the following measures against the wind;
1. When installing the unit at a roadside concentrated with
buildings, install it parallel with the road.
2. Install the unit so that the air outlet faces toward the wall
at a place such as rooftop, which may be subjected to
strong wind.
* The outdoor unit should be installed in accordance with the service space.
•Place free from the risk of combustible gas leakage.
•Place which can bear the weight of the unit.
•Place which can bear the fixing strength of the outdoor unit.
•Avoid a place subject to oil (including machine oil).
•Avoid a saline place.
•Avoid a place subject to sulfide gas (hot spring zone).
(When installing the unit at such special environmental
conditions, it may cause machine trouble. When it is
unavoidable to use such places. It requires special
maintenance.)
• A place where the discharge air and noise of the outdoor unit do not disturb the neighborhood.
(Take special care not to cause any inconvenience to your neighbors when installing the unit on
the borderline with your neighborhood.)
• A place where strong wind does not head against the air outlet of the outdoor unit.
(If a strong wind heads directly against the air outlet at the time of cool operation, a safety device
can be operated.)
•Do not install the outdoor unit at an unstable place such as outer wall of an apartment or build-
ing.
The outdoor unit may fall down, causing severe personal or property damage or loss.
•Install the unit at a place close to the wall facing the outside
as it is necessary to perform piping connection with the out-
door unit.
- It is effective to install the unit at a window side to ensure
uniform distribution of indoor temperature.
•Install the unit at a place where there is no obstacle against
the wind around the air inlet and air outlet.
• Install the unit horizontally at a stable, rigid place.
(When installing the unit at a place subjected to vibration,
noise may occur.)
•Avoid a place near the door which is frequented by people.
•Avoid a place subject to direct sunlight.
Above 15cm
Above 15cm
Above 50cm
Above 15cm
Above 50cm
Above 30cm
The air inlet faces toward the wall. The air outlet faces toward the wall.
Space for piping
and wiring
Space for piping
and wiring
Wall Strong wind
Roof top
Above 50cm
Above 100cm
Above 20cm
Top view
Side view