Samsung MC26AC2-07 User manual

SERVICE Manual
ROOM AIR CONDITIONER
INDOOR UNIT
MC26AC2-07
MC26AC2-12
OUTDOOR UNIT
MC26AC2X
CONTENTSAIR CONDITIONER
1. Precautions
2. Product Specifications
3. Operating Instructions and
Installation
4. Disassembly and Reassembly
5. Troubleshooting
6. Exploded Views and Parts List
7. Block Diagrams
8. PCB Diagrams
9. Wiring Diagrams
10. Schematic Diagrams
DB98_11868A(1)_cover 3/3/03 11:16 AM Page 3

1-1Samsung Electronics
1. Warning: Prior to repair, disconnect the power
cord from the circuit breaker.
2. Use proper parts: Use only exact replacement
parts. (Also, we recommend replacing parts
rather than repairing them.)
3. Use the proper tools: Use the proper tools and
test equipment, and know how to use them.
Using defective tools or test equipment may
cause problems later-intermittent contact, for
example.
4. Power Cord: Prior to repair, check the power
cord and replace it if necessary.
5. Avoid using an extension cord, and avoid
tapping into a power cord. This practice may
result in malfunction or fire.
6. After completing repairs and reassembly,
check the insulation resistance.
Procedure: Prior to applying power, measure
the resistance between the power cord and the
ground terminal. The resistance must be
greater than 30 megaohms.
7. Make sure that the grounds are adequate.
8. Make sure that the installation conditions are
satisfactory.
Relocate the unit if necessary.
9. Keep children away from the unit while it is
being repaired.
10. Be sure to clean the unit and its surrounding
area.
1. Precautions
Fig. 1-1 Avoid Dangerous Contact
Fig. 1-2 No Tapping and No Extension Cords
Fig. 1-3 No Kids Nearby!
Fig. 1-4 Clean the Unit
DB98_11868A(1)_1 3/3/03 11:17 AM Page 1-1

MEMO
Samsung Electronics1-2
DB98_11868A(1)_1 3/3/03 11:17 AM Page 1-2

2-1Samsung Electronics
2. Product Specifications
2-1 Table
kW
Cooling BTU/h
Kcal/h
Dehumidifying \/h
Air volume m
3
/min
Noise dB
Power ø-V-Hz
Power Consumption W
Operating Current A
Starting Current A
Power Cord (Option)
Connection Cable (Option)
Fuse Capacity A
Outer mm
Dimension W x H x D inch
Weight kg
Refrigerant pipe Liquid
OD(mm)xL(m)
Gas
OD(mm)xL(m)
Drain hose
OD(mm)xL(m)
Type
Model name
Compressor Capacitor
Motor Type
Rated output W
Type
Blower Motor Type
Rated output W
Heat exchanger
Refrigerant control unit
Freezer oil capacity cc
Refrigerant to charge(R410A)
Protection device
Cooling test condition
Maximum operation condition
Model
Item
INDOOR UNIT
MC26AC2-07
INDOOR UNIT
MC26AC2-12
OUTDOOR UNIT
MC26AC2X
MC26AC2
Power
Size
Perfor-
mance
Type
2.05 x 2
6,995 x 2
1,763x2
0.9
6
39
1,250
5.5
3.15
790 x 245 x 165
31.1 x 9.64 x 6.50
7.7
ø6.35 x 5
ø9.52 x 5
ø18.0 x 2
-
-
-
-
-
Resin
Cross-flow
22
2Row 12Step
-
-
3.5
11,942
3,009
1.5
8
42
1,210
5.4
3.15
790 x 245 x 165
31.1 x 9.64 x 6.50
7.7
ø6.35 x 5
ø9.52 x 5
ø18.0 x 2
-
-
-
-
-
Resin
Cross-flow
22
2Row 12Step
-
-
7.6
25,932
6,535
-
-
60
2,460
10.9
-
880 x 638 x 310
34.65 x 25.1 x 12.2
60
-
-
-
Rotary
A : G8C124JU1EL
B : G8C124JU1EL
A : 35µF 450VAC
B : 35µF 450VAC
A : 1,060, B : 1,060
Steel
Propeller
74
2Row 36Step
A : 500
B : 500
A : RAC12128-9622
B : RAC12128-9622
Wall-Mounting Multi Split
1-220-240V~, 50Hz
30
2.5 x 3core
1.0 x 4core
A/B-Unit : Capillary tube
A-Unit : 920g, B-Unit : 970g
Indoor unit : DB27˚C WB19˚C Outdoor unit : DB35˚C WB24˚C
Indoor unit : DB32˚C WB23˚C Outdoor unit : DB43˚C WB26˚C
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-1

245
165
790
Air
in
(Front view)
(Remote control)
Air out
Installation plate
2245
115
Samsung Electronics2-2
2-2 Dimensions
2-2-1 Indoor Unit
(Unit : mm)
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-2

2-3Samsung Electronics
Product Specifications
2-2-2 Outdoor Unit
(Unit : mm)
(Front view) (Rear view)
660
1000 340
796
310
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-3

10
9
8
7
620 30
Outdoor drybulb temperature [deg C]
Low Pressure [kg/cm2G]
40
30.6/22.5
27/19
21.5/14.6
11
10
9
8
720 30
Outdoor drybulb temperature [deg C]
Low Pressure [kg/cm2G]
40
30.6/22.5
27/19
21.5/14.6
Samsung Electronics2-4
2-3 Pressure Graph
■MC26AC2-07
■
■MC26AC2-12
■
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-4

3-1Samsung Electronics
3. Operating Instructions and Installation
3-1 Operating Instructions
Each time you press this button
Mode is changed in the following order
Temp. down button. To decrease the temperature by the pressing
the temperature button.
Temp. up button. To increase the temperatute by the pressing
the temperature button.
FUNCTION OF KEY
3-1-1 The Feature of Key in remote controller
: Auto Mode : Dry Mode
: Cool Mode : Fan Only
(DOWN)
Power On/Off button to start and stop airconditioner or timer set up.
NAMED OF KEY
(UP)
NO
1
2
3
4
5
6
7
8
9
Adjust air flow vertically.
Press until the appearance. The sleep timer can be used when
you are cooling your room to switch the air conditioner off
automatically after a period of six hours.
The Off Timer enables you to switch off the air conditioner automatically
after a given period of time that is from 30 minutes to 24 hours.
To cancel the Off Time, press the (Set/Cancel) button.
The ON Timer enables you to switch on the air conditioner automatically
after a given period of time that is from 30 minutes to 24 hours.
To cancel the On Time, press the (Set/Cancel) button.
To select the 5 way function with the remote control, press the 5 way
button one or more times until the desired mode is selected.
Each time you press the 5 way button.
Each 5 way indicator on the indoor unit comes on in order.
Each time you press this button,
FAN SPEED is changed in the following order.
Press until the appearance. The air condition cools
the room as quickly as possible. After 30minutes, the air,
the airconditioner is reset automatically to the previous mode.
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-5

Operating Instructions and Installation
Samsung Electronics3-2
1. AUTO MODE : In this mode, operation
COOL mode is selected automatically by
the room temperature of initial operation.
∆T= -1°C, -2°C, 0°C+1°C+2°C
∆T is controlled by setting temperature
up/down key of remote controller
* FAN SPEED : AUTO
2. COOL MODE : The unit operates
according to the difference between the
setting and room temperature.
(18°C~30°C)
3. DRY MODE : Has 3 states, each
determined by room temperature.
The unit operates in DRY mode.
*Compressor ON/OFF Time is controlled
compulsorily(can not set up the fan
speed, always breeze).
*Protective function : Low temperature
release. (Prevention against freeze)
4. TURBO MODE : This mode is available in
AUTO, COOL, DRY, FAN MODE.
When this button is pressed at first, the
air conditioner is operated “powerful”
state for 30 minutes regardless of the set
temperature, room temperature.
When this button is pressed again, or
when the operating time is 30 minutes,
turbo operation mode is canceled and
returned to the previous mode.
*But, if you pressed the TURBO button in
DRY or FAN mode that is changed with
AUTO mode automatically.
5. SLEEP MODE : Sleep mode is available
only in COOL mode.
The operation will stop after 6 hours.
*The setting temperature is automatically
raised by 1°C each 1hour When the
temperature has been raised by total of
2°C, that temperature is maintained.
6. FAN SPEED : Manual (3 step), Auto (4 step)
Fan speed automatically varies depending
on both the difference between setting and
the room temperature.
7. COMPULSORY OPERATION :
For operating the air conditioner without
the remote controller.
*AUTO : The operating is the same
function that AUTO MODE in the remote
controller. And each time you press the
button the 5WAY function is changed as
follow. STD ➝ NATURE ➝ POWER ➝
SAVING ➝ SILENCE ➝ POWER OFF
❊ STD(standard)( ) : General opera-
tion Mode
❊ NATURE( ) : The unit is operated
according to health
pattern control
❊ POWER( ) : The unit is operated in
powerful state
❊ SAVING( ) : The unit is operated in
power saving state
❊ SILENCE( ) : The unit is operated
quietly
Each mode has Auto, Cool and SLEEP
operation designed in advance.
Operation Type
Cool Operation
Room Temp
Tr≥25°C+∆T
Tr<24°C+∆T
Compressor ON
Compressor OFF
3-1-2 Name & Function of Key in remote controller
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-6

3-3Samsung Electronics
Operating Instructions and Installation
8. SWING : BLADE-H is rotated vertically by
the stepping motor.
*Memory louver : When ON/OFF button
is pressed at stop state, the BLADE-H
returns to its original location which is
operating state before stop
*Swing Set : Press the button under the
remote control is displayed on LCD the
and the blades move up and down. If the
one more time press the button, blades
location is stop.
9. 24-Hour ON/OFF Real Setting Timer. :
The air conditioner is turned ON at a
specified time using .
OFF TIMER : The air Conditioner is
turned OFF at a specified time using .
*ON TIMER : Only timer LED lights on.
*OFF TIMER : Both timer and operation
LED lights on.
10. SELF Diagnosis
11. BUZZER SOUND : Whenever the
ON/OFF button is pressed or whenever
change occurs to the condition which is set
up or select, the compulsory operation
mode, buzzer is sounded "beep".
Indoor unit room temperature sensor
error(open or short)
Check Point
LED DISPLAY
TIMER
NATURE STD
POWER SAVING SILENCE
: LED blinking : LED off
Indoor unit heat exchanger temperature
sensor error(open or short)
Indoor fan mal function
EEPROM error
Option error(option wasn’t set up or
option data error)
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-7

Samsung Electronics3-4
Caution :
It is harmful to the air conditioner if it is used in the following environments: greasy areas (including areas near machines),
salty areas such as coast areas, areas where sulfuric gas is present such as hot spring areas. Contact your dealer for
advice.
3-2 Installation
3-2-1 Selecting Area for Installation
Select an area for installation that is
suitable to the customer's needs.
3-2-1(a) Indoor Unit
1. Make sure that you install the indoor unit
in an area providing good ventilation. It
must not be blocked by an obstacle
affecting the airflow near the air inlet and
the air outlet.
2. Make sure that you install the indoor unit
in an area allowing good air handling and
endurance of vibration of the indoor unit.
3. Make sure that you install the indoor unit
in an area where there is no source of heat
or vapor nearby.
4. Make sure that you install the indoor unit
in an area from which hot or cool air is
spread evenly in a room.
5. Make sure that you install the indoor unit
in an area away from TVs, audio units,
cordless phones, fluorescent lighting
fixtures and other electrical appliances
(at least 1 meter).
6. Make sure that you install the indoor unit
in an area which provides easy pipe
connection with the outdoor unit, and
easy drainage for condensed water.
7. Make sure that you install the indoor unit
in an area which is large enough to
accommodate the measurements shown in
figure on the next page.
3-2-1(b) Outdoor Unit
1. Make sure that you install the outdoor
unit in area not exposed to the rain or
direct sun light.
(Install a separate sunblind if exposed to
direct sun light.)
2. Make sure that you install the outdoor
unit in area allowing good air moment,
not amplifying noise or vibration,
especially to avoid disturbing neighbours.
(Fix the unit firmly if it is mounted in a
high place.)
3. Make sure that you install the outdoor
unit in area providing good ventilation
and which is not dusty. It must not be
blocked by any obstacle affecting the
airflow near the air inlet and the air outlet.
4. Make sure that you install the outdoor
unit in area free from animals or plants.
5. Make sure that you install the outdoor
unit in area not blocking the traffic.
6. Make sure that you install the outdoor
unit in area easy to drain condensed water
from the indoor unit.
7. Make sure that you install the outdoor
unit in area which provides easy
connection
within the maximum allowable length of a
coolant pipe(10 meters).
8. Make sure that you install the outdoor
unit in an area which is large enough to
accommodate the measurements shown in
figure on the next page.
3-2-1(c) Remote Control Unit
1. Make sure that you install the remote
control unit in an area free from obstacles
such as curtains etc, which may block
signals from the remote control unit.
2. Make sure that you install the remote
control unit in an area not exposed to
direct sunlight, and where there is no
source of heat.
3. Make sure that you install the remote
control unit in an area away from TVs,
audio units, cordless phones, fluorescent
lighting fixtures and other electrical
appliances (at least 1 meter).
1. Add 10 grams of refrigerant (R410A) for every
1 meter if the pipe length exceeds the
standard pipe length of 5 meters.
2. Maintain a height between the indoor and
outdoor units of less than 3 meters.
Note
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-8

3-5Samsung Electronics
Operating Instructions and Installation
600mm or more
600mm or more
100mm or more
100mm or more
A-UNIT
B-UNIT
Outdoor unit check point
10
4
3-2-2 Installation diagram of indoor unit and outdoor unit
A
B
A Indoor unit gas leak test check point
Tape vinyl
Piping
Indoor unit
B Drain hose installation
Cut the piping hole
sloped slightly
Piping (Liquid) 1/4" Clamper tube
Piping (Gas) 3/8" Installation plate
Installation tube Pipe-connection
Vinyl tape Screw
Putty Drain hose
Piping may be laid to the rear, left,
right or down .
Right
Rear Down Rear
Left
3
1
1
2
3
4
5
6
7
8
9
10
2
Remote control
125mm or more
125mm
or more
30mm or more
7
6
5
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-9

Operating Instructions and Installation
Samsung Electronics3-6
3-2-2(a) Fixing the Installation Plate
3-2-2(b) Purging the Unit
Installation plate
Pipe hole
(ø65mm)
1. Determine the position of the pipe and drain hose
hole using the right figure and drill the hole with an
inner diameter of 65mm so that it slants slightly
downwards.
2. If you are fixing the indoor unit to a… Then follow
Steps…
Wall 3.
Window frame 4 to 6.
3. Fix the installation plate to the wall in a manner
appropriate to the weight of the indoor unit.
If you are mounting the plate on a concrete wall
with anchor bolts, the anchor bolts must not project
by more than 20mm.
4. Determine the positions of the wooden uprights to
be attached to the window frame.
5. Attach the wooden uprights to the window frame in
a manner appropriate to the weight of the indoor
unit.
6. Using tapped screws, attach the installation plate to
the wooden uprights, as illustrated in the last figure
opposite.
On delivery, the indoor unit is loaded with an inert
gas. All this gas must therefore be purged before
connecting the assembly piping. To purge the inert gas,
proceed as follows.
Unscrew the caps at the end of each pipe.
Result : All inert gas escapes from the indoor unit.
• To prevent dirt or foreign objects from getting
into the pipes during installation, do NOT
remove the caps completely until you are ready
to connect the piping.
60
30
252 275
14090
410~730
(Unit : mm)
(Unit : mm)
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-10

Operating Instructions and Installation
3-7Samsung Electronics
3-2-2(c) Connecting the Assembly Cable.
1 2 E3
1
1
(L) 2
(N) 3
COM
E
2 E3
Indoor
unit
Outdoor
unit
Earth
terminal
Earth terminal
The outdoor unit is powered from the indoor unit via the assembly
cable. If the outdoor unit is more than five metres away from the
indoor unit, the cable must first be extended to a maximum of ten
metres.
1. Extend the assembly cable if necessary.
2. Open the front grille by pulling on the tabs on the lower right
and left sides of the indoor unit.
3. Remove the screw securing the connector cover.
4. Pass the assembly cable through the rear of the indoor unit and
connect the assembly cable to terminals N1 to 1.
• Each wire is labelled with the corresponding terminal
number.
5. Firmly fix the ass’y cable with clamp wire holder.
6. Pass the other end of the cable through the 65mm hole in the
wall.
7. Replace the connector cover, carefully tightening the screw.
8. Close the front grille.
9. For further details on how to plug the other end of the assem-
bly cable into the outdoor unit, refer to page 3-8.
3-2-2(d) Installing and Connecting the Indoor Unit Drain Hose
Care must be taken when installing the drain hose for the indoor unit to ensure that any conden-
sation water is correctly drained outside. When passing the drain hose through the 65mm hole
drilled in the wall, check that none of the following situations occur.
To install the drain hose, proceed as follows.
1. If necessary, connect the 2-metre extension to the drain hose.
2. If you are using the extension, insulate the inside part of the extension drain hose with a
shield.
3. Pass the drain hose under the refrigerant piping, taking care to keep the drain hose tight.
4. Pass the drain hose through the hole in the wall, making sure that it is sloping downwards, as
shown in the illustrations above.
The hose must
NOT slope upwards.
The hose will be fixed permanently into position once
the whole installation has been tested for gas leaks;
The end of the drain
hose must NOT be
placed in water.
Do NOT bend the
hose in different
directions.
Keep a clearance of at
least 5cm between the
end of the hose and the
ground.
Do NOT place the end
of the drain hose in a
hollow.
Shield
Drain hose Extension drain hose
5cm
less
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-11

1 2 3
1 2 53
1 2 3 5
AE
B
1 2 3
1 2 3
35
5
1 2
1 2 3
1 2 3
35
5
1 2
Indoor unit
Outdoor unit
Terminal Block 2
(N) 2
(N)
1
(L) 1
(L) 2
(N)
3
COM
3
COM
3
COM
A-unit
MC26AC2-12 B-unit MC26AC2-07 C-unit
MC26AC2-07
Earth
terminal
Earth
terminal
Earth
terminal
Earth
terminal
Assembly
cable
Earth
terminal
Earth
terminal
Circuit Breaker
(Main Power cable)
Earth
terminal
Indoor Unit Outdoor Unit
MC26AC2-12 MC26AC2X
MC26AC2-07
Operating Instructions and Installation
Samsung Electronics3-8
3-2-2(e) Outdoor unit installation
GAS LEAK TEST
WIRING CONNECTION
Indoor unit check point
Outdoor unit
check point
Check for gas leak from the flare nut
connections with leak detector.
Two electric cables must be connected to the outdoor unit:
• The assembly cable connecting the indoor unit to the outdoor unit.
• The power cable connecting the auxiliary circuit breaker to the outdoor
unit.
1 Remove the terminal board cover on the side of the outdoor unit.
2 Connect the assembly cable to terminals 1 to 5 and connect the power cable to
therminals A to B.
√Each wire is labelled with the corresponding terminal number.
√Ensure the wire number of the indoor unit and the terminal number of
the outdoor unit.
3 Connect the earth wires to the earth terminals.
√Refer to the page opposite for further details on how to check that
earthing is correct.
4 Replace the terminal board cover, carefully tightening the screw.
5 Connect the power cable to the auxiliary circuit breaker.
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-12

Operating Instructions and Installation
3-9Samsung Electronics
Grounding
(The parts for this work are optional)
• A grounding terminal can be found on
the outdoor unit as illustrated.
2. Use of a grounding electrode.
• Specifications of grounding electrode.
1. When an existing grounding terminal is
avilable.
(Grounding wire of ø1.6mm or larger<solid
wire>or 2mm2or larger <standard wire>)
Terminal used
exclusively for
grounding
Carbon plastic Steel core
PVC-insulated wire(2mm2x3.5m), green Terminal, M4
Grounding resistance:
less than 100 ohms
(existing grounding electrode)
Grounding screw hole
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-13

Operating Instructions and Installation
Samsung Electronics3-10
3-2-2(f) Air-Purge Procedure
1. Connect each assembly pipe to the appropriate valve on the
outdoor unit and tighten the flare nut.
3. Open the valve of the low pressure side of manifold gauge
counter-clockwise.
6. Mount the valve stem nuts to the 2-way and 3-way valve.
6. And mount the service port cap to 3-way valve.
4. Purge the air from the system using vacuum pump for about
30 minutes.
- After that, please recheck that pressure is staloilization.
- Close the valve of the low pressure side of manifold gauge
clockwise.
- Remove the hose of the low pressure side of manifold
gauge.
7. Check for gas leakage.
6. - At this time, especially check for gas leakage from the
3-way valve’s stem nuts, and from the service port cap.
5. Set valve cork of both liquid side and gas side of packed
valve to the open position.
2. Connect the charging hose of low pressure side of
manifold gauge to the packed valve having a service port
(3/8” Packed valve) as shown at the figure.
A
B
C
D
Outdoor unit Indoor unit
Gas pipe side
Liquid pipe side
Vacuum Pump
B
(liquid)
A
(gas)
Valve stem
Stem cap
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-14

R410A
Suspension hook
High
pressure
gauge
Hand
wheel
Finger tight
fittings
Connected to
high pressure
side
Vacuum
pump
For mounting
other end of
hose when
not in use
INDOOR
A-UNIT
INDOOR
B-UNIT
INDOOR
C-UNIT
Compound
gauge
Operating Instructions and Installation
3-11Samsung Electronics
3-2-2(g) Refrigerant Refill
• Refill an air-conditioner with refrigerant when refrigerant has been leaked at installing or using.
1. Vacuum system with pump (for new
installation, leakage).
3. Connect the tank to refill with Refrigerant
4. Set the unit to Low pressure checking mode.
* Press the ON/OFF switch for 5 second.
* All lamps blink on the indoor unit.
7. Stop operation of the air conditioner.
9. Close the cap of each valve.
2. Turn the 3-way valve clockwise to close,
connect the pressure gauge(low pressure
side) to the service valve, and open the
3-way valve again.
5. Check the pressure indicated by the
pressure gauge(low pressure side).
* Refer to Low pressure graph.
6. Open the refrigerant tank and fill with refrig-
erant until the rated pressure is reached.
* It is recommended not to pour the refriger-
ant in too quickly, but gradually while
operating a pressure valve.
8. Close the 3-way valve, disconnect the
pressure gauge, and open the 3-way valve
again.
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-15

Samsung Electronics
Operating Instructions and Installation
3-12
3-2-2(h) Refrigerant Adjustment
3-2-2(i) Flare nut fixing torque
Class For installation For service
Outer diameter
ø 6.35 (Liquid Side)
ø 9.52 (Gas Side)
ø 12.7 (Gas Side)
160
300
500
200
350
550
Fixing Torque Final Torque
Torque (kg-cm)
Connection
Pipe Length
5m Max.
5~10m
Air-Purge
Method
Refer to the
detailed Air-Purge
Procedure
Refrigerant
Adjustment
Unnecessary
Add 10g of refrigerant
R410A(Add as liquid
state) for every 1m.
Air-Purge
Method
Purge air using a
vaccum pump
Refrigerant
Quantity
refer to
specification sheet
Add 10g of refrigerant
R410A(Add as liquid
state) for every 1m.
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-16

Operating Instructions and Installation
3-13Samsung Electronics
3-2-2(j) "Pump down" Procedure
• Pump down shall be carried out when an evaporator is replaced or when the unit is relocated
in another area.
Relocation of the air conditioner
• Refer to this procedure when the unit is
relocated.
1. Carry out the pump down procedure (refer
to the details of 'pump down').
2. Remove the power cord.
3. Disconnect the assembly cable from the
indoor and outdoor units.
4. Remove the flare nut connecting the indoor
unit and the pipe.
At this time, cover the pipe of the indoor
unit and the other pipe using a cap or vinyl
plug to avoid foreign material entering.
Relocation of the air conditioner
5. Disconnect the pipe connected to the
outdoor unit.
At this time, cover the valve of the outdoor
unit and the other pipe using a cap or vinyl
plug to avoid foreign material entering.
6. Make sure you do not bend the connection
pipes in the middle and store together with
the cables.
7. Move the indoor and outdoor units to a
new locatioon.
8. Remove the mounting plate for the indoor
unit and move it to a new location.
2-Way Valve
2-Way Valve
3-Way Valve
3-Way Valve
Stem cap
Valve Stem
(liquid)
(gas)
1. Remove the caps from the 2-way valve
and the 3-way valve.
3. Set the unit to cool operation mode.
(Check if the compressor is operating.)
5. When the pressure gauge indicates "0"
turn the 3-way valve clockwise to close.
4. Turn the 2-way valve clockwise to close.
6. Stop operation of the air conditioner.
7. Close the cap of each valve.
2. Turn the 3-way valve clockwise to close
and connect a pressure gauge(low
pressure side) to the service valve, and
open the 3-way valve again.
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