Samsung AQ07ACVE, AQ09ACVE, AQ12ACVE, SH07CA1, SH09CA1 Service Manual

ROOM AIR CONDITIONER

INDOOR UNIT	OUTDOOR UNIT
AQ07ACVE	UQ07ACVE
AQ09ACVE	UQ09ACVE
AQ12ACVE	UQ12ACVE
SH07CA1	SH07CA1X
SH09CA1	SH09CA1X
SH12CA1	SH12CA1X

SERVICE Manual

AIR CONDITIONER

CONTENTS

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

ELECTRONICS

©Samsung Electronics Co., Ltd. Mar. 2000. Printed in Korea.

Code No. DB81-00143A(1)

1. Precautions

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 megohms.

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.

dangerous

Fig. 1-1 Avoid Dangerous Contact

Fig. 1-2 No Tapping and No Extension Cords

Fig. 1-3 No Kids Nearby!

.K

O

Fig. 1-4 Clean the Unit

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2. Product Specifications

2-1 Table

							Model	SH07CA1			SH09CA1			SH12CA1
Item								AQ07ACVE			AQ09ACVE			AQ12ACVE
								Indoor unit		Outdoor unit	Indoor unit		Outdoor unit	Indoor unit			Outdoor unit
Type								Wall-mounting			Wall-mounting			Wall-mounting
	Cooling						Btu/h	7000			8700			12000
	Dehumidifying						l/h	1.0				1.1			1.8
	Heating						Btu/h	8000			10.000			13500
	Low temp. heating						Btu/h		-			-			-
Perfor-	Air volume				Cooling		m3/min	5.3		-	6.5		-	8.0			-
					Heating		m3/min	5.7		-	7.0		-	8.5			-
mance
	Noise				Cooling		dB	35		49	39		50	42			53
					Heating		dB	49		49	39		50	42			53
	Energy				Cooling		Btu/h.W	8.7				9.3			8.5
	Efficiency ratio				Heating		Btu/h.W	9.7			11.1				8.7
	Power						Ø-V-Hz	1-220/240-50			1-220/240-50			1-220/240-50
	Power				Cooling		W	800			930			1400
	Consumption				Heating		W	820			900			1550
	Operating Current				Cooling		A	3.6				4.3			6.4
					Heating		A	3.6				4.5			6.9
Power	Power factor				Cooling		%	98.2			96.6			96.9
					Heating		%	98.0			96.2			96.8
	Starting current						A	17				22			30
	Power cord				Length		m	2		-	2		-	2			-
					Number of core		wire	250V 10/16A			250V 10/16A			250V 10/16A
	Fuse capacity						A	3.15		-	3.15		-	3.15		-
	Outer				Width x Height		mm	815x298x182		720x532x245	815x298x182		762x532x280	815x298x182			762x532x280
	dimension				x Depth		inch	32.08x11.73x7.17		28.35x20.94x9.65	32.08x11.73x7.17		30.00x20.94x11.02	32.08x11.73x7.17		30.00x20.94x11.02
	Weight						kg	9.6		32	9.6		34	9.6		39
	Refrigerant pipe				Liquid		OD(mm) x L(m)	ø6.35 x 5			ø6.35 x 5			ø6.35 x 5
					Gas		OD(mm) x L(m)	ø9.52 x 5			ø9.52 x 5			ø12.7 x 5
Size	Drain hose						ID(mm)x L(m)	ø17 x 2			ø17 x 2			ø17 x 2
	Compressor		Type					-		Rotary	-		Rotary	-			Rotary
			Motor		Type			-		-	-		-	-			-
					Rated output		W	-		800	-		900	-			1445
	Blower		Type					Cross-fan		Propeller	Cross-fan		Propeller	Cross-fan			Propeller
			Motor		Type			Resin		Steel	Resin		Steel	Resin			Steel
					Rated output		W	35		20	35		20	35			20
Heat exchanger								2Row 12Step		1Row 20Step	2Row 12Step		1Row 20Step	2Row 12Step			2Row 20Step
Refrigerant control unit								Capillary tube			Capillary tube			Capillary tube
Freezer oil capacity								362			362			602
Refrigerant to charge(R-407C)								650			750			1100
Protection device								-		MRA12086	-		MRA12037	-			MRA12074
										-12008			-12007				-12007
Cooling test condition									Indoor unit : DB27˚C WB19˚C				Outdoor unit : DB35˚C WB24˚C
Heating test condition									Indoor unit : DB20˚C WB15˚C				Outdoor unit : DB 7˚C WB 6˚C
Maximum operation Condition									Indoor unit : DB32˚C WB23˚C				Outdoor unit : DB43˚C WB26˚C

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2-2 Dimensions
2-2-1 Indoor Unit
(Front view)	(Remote control)
Air	298
in
	115
815	182
Air out	45	22
(Rear view)	Installation plate
2-2-2 Outdoor Unit

	AQ07ACVE	11
		20
	SH07CA1
	496
	267
	245	(Rear view)
	(Front view)
	532

720

55

AQ09ACVE / AQ12ACVE SH09CA1 / SH12CA1

280

295

555
(Front view)	(Rear view)

532

762

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2-3 Refrigerating Cycle Block Diagram

INDOOR UNIT			OUTDOOR UNIT
		Capillary tube
T1		2-way valve	Check valve
		Liquid side
			Capillary tube
Heat	Cross fan		Heat		Propeller fan
exchanger			exchanger
(Evaporator)			(Condenser)
T2		Gas side
		3-way valve	4-way valve
				Cooling
			Compressor	Heating
				Gas leak check point

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3. Operating Instructions and Installation

3-1 Operating Instructions

3-1-1 Name & Function of Key in remote controller

NO

NAMED OF KEY

FUNCTION OF KEY

1

Power On/Off button to start and stop airconditioner or timer set up

(UP)

Temp. up button. To increase the temperatute by the pressing

2

the temperature button

(DOWN)

Temp. down button. To decrease the temperature by the pressing

the temperature button

Each time you press this button

: Auto Mode

: Fan Only

3

Mode is changed in the following order

: Cool Mode

: Heat Mode

:

Dry Mode

Press

until the appearance. the air condition cools or heats

the room as quickly as possible. after 30minutes, the air,

4

the airconditioner is reset automatically to the previous mode

Press

until the appearance. the sleep timer can be used when

you are cooling or heating your room to switch the air conditioner off

automatically after a perriod of six hours.

Each time you press this button,

5

FAN SPEED is changed in the following order.

6

Adjust air flow vertically.

7

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.

The Off Timer enables you to switch off the air conditioner automatically

8

after a given period of time that is from 30 minutes to 24 hours.

To cancel the On Time, press the

(Set/Cancel) button.

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Operating Instructions and Installation

3-1-1 Name & Function of Key in remote controller

1.AUTO MODE : In this mode, operation mode(COOL, HEAT, DRY) is selected automatically by the room temperature of initial operation.

Room Temp	Operation Type
Tr≥ 21°C+∆ T	Cool Operation (Set Temp:AUTO SETTING)
21°C +∆ T>Tr	Heat Operation (Set Temp : 22°C+∆ T)

∆T= -1°C, -2°C, 0°C+1°C+2°C

∆T is controlled by setting temperature up/down key of remote controller

2.COOL MODE : The unit operates according to the difference between the setting and room temperature. (18°C~30°C)

3.HEAT MODE : The unit operates according to the difference between the setting and room temperature.(16°C~30°C) *Prevention against cold wind : For about 3~5 minutes after initial operation, thermo control or “de-ice”, the indoor fan will either not operate or operate very slowly(510 rpm), then switch to the selected fan speed. This period is to allow the indoor unit's heat-exchanger to prewarm before emitting warm air.

*High temperature release function : The outdoor unit for and compressor ON/OFF control for safety operation, when the overheat is heat exchanger of indoor unit. *De-ice : Deicing operation is controlled by indoor unit's heat exchanger temperature and accumulating time of compressor's operation.

De-ice end by sensing of the processing time by de-ice Condition.

4.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)

5.TURBO MODE : This mode is available in AUTO, COOL, HEAT, 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 press the TURBO button in DRY or FAN mode that is changed with AUTO mode automatically.

6.SLEEP MODE : Sleep mode is available only in COOL or HEAT mode.

The operation will stop after 6 hours.

*In COOL mode : 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.

*In HEAT mode : The setting temperature is automatically droped by 1°C each 1hour. When the temperature has been droped by total of 2°C, that temperature is maintained.

7.FAN SPEED : Manual (3 step), Auto (4 step) Fan speed automatically varies depending on both the difference between setting and the room temperature.

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8.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.

9.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, about 43°. If the one more time press the button, blatles location is stop.

10.Quick OFF TIMER: OFF timer (quick timer) allows reservation or cancel the timer on and timer off quickly

When OFF timer button is pressed at operating state, LCD displays the polling state sequentially.

The LCD also displays the time remaining.

11.24-Hour ON/OFF Real Setting Timer. : The air conditioner is turned ON at a specified time using ON TIMER .

Operating Instructions and Installation

OFF TIMER : The air Conditioner is turned OFF at a specified time using OFF TIMER . *ON TIMER : Only timer LED lights on.

*OFF TIMER : Both timer and operation LED lights on.

*3 minutes delay timer.

12.	SELF Diagnosis
LED DISPLAY		Check Point
oper-	TIMER FAN Turbo
ation

Interruption of electric power and Power on.

	Abnormal condition of the room sensor.
	Abnormalconditionoftheindoorunit'sheatexchangersensor.
	Indoor unit fan motor lock.
: LED	: LED off
blinking

13.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"

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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 accomodate 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).

Note

1.Add 10 grams of refrigerant (R-22) 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.

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).

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.

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Operating Instructions and Installation

3-2-2 Installation diagram of indoor unit and outdoor unit

A Indoor unit gas leak test check point	Piping may be laid to the rear, left,
	right or down .

Indoor unit		3
		Right		Left
	1	Rear	Down	Rear
Piping
2

	B Drain hose	70mm or more
		200mm or more
		250mm
		or more
	Cut the piping
	Cut the piping hole
	sloped slightly	7
	sloped slightly

5	6	9

“H”metere s maximum

Remote control

Remote control holder

Model	L	H
**7**	15	7
**9**	10	7

10

**12** 15 7

1				6	Clamper tube
2	7K/9K BTU		Piping(Gas)3/8”	7	Installation plate
	12K BTU		Piping(Gas)1/2”
3		Installation tube		8	Pipe-connection
4		Vinyl tape		9	Screw
5		Putty		10	Drain hose

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Operating Instructions and Installation

3-2-2(a) Fixing the Installation Plate

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.

(Unit : mm)
	20
160	100
	60
280	340

(Unit : mm)

410~730

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.

3-2-2(b)	Purging the Unit
	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 fol-
	lows.
	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.
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Operating Instructions and Installation

3-2-2(c) Connecting the Assembly Cable.

						Indoor unit
	N	1	2	3	4		Earth
							terminal
	1	2	3	4	5	E
							Outdoor
							unit
	1	2	3	4	5	E	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 1(N) to 4.

• Each wire is labelled with the corresponding terminal number.

5.Firmly fix the ass’y cable with clamp wire holdet.

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 assembly 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 condensation water is correctly drained outside.l When passing the drain hose through the 65mm hole drilled in the wall, check that none of the following situations occur.

The hose must

The end of the drain

Do NOT bend the

Keep a clearance of at

NOT slope upw

hose must NOT be

hose in different

least 5cm between the

ards.

placed in water.

directions.

end of the hose and the

ground.

Do NOT place the end of the drain hose in a hollow.

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.

	Shield
Drain hose	Extension drain hose

The hose will be fixed permanently into position once the whole installation has been tested for gas leaks;

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Operating Instructions and Installation

3-2-2(e) Outdoor unit installation

Wiring connection

1.Remove the cover-E parts.

2.Firmly connect the cable connector in the terminal block.

3.Fasten the M4 ring terminal to the hole marked

4.Firmly fix the ass'y cable with clamp wire holder.

5.Assemble the cover-E parts.

6.To prevent the entry of water, form a trap of the ass'y cable as illustrated in the installation diagram of indoor and outdoor unit.

Ass’y cover valve (RO Hand cabi, RH)

N 1 2 3 4

Installing and Connecting the Outdoor Unit Drain Hose

Drain hole

When using the air conditioner in the heating, ice may accumulate. Duting de-icing, the condensed water must be drained off safely. Consequently, you must install a drain hose on the outdoor unit,

1.Insert the drain plug into the drain hole on the underside of the outdoor unit.

2.Connect the drain hose to the drain plug.

3.Ensure that the drained water runs off correctly and safely.

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Operating Instructions and Installation

3-2-2(f) Flare Modification

• Tools used

Flare modification procedure

1) Cut the pipe using a pipe cutter.			2) Remove burrs at the tip of the pipe cut.
			Caution : Burrs not removed may result in
			leakage of gas.
			Pipe
90	Oblique Raughness	Burr	Reamer

	3) Insert a flare nut into the pipe and	D
	modifty flare.

A

A

Outer diameter	A(mm)
ø6.35mm	1.3
ø9.52mm	1.8
ø12.7mm	2.0

* Unproper flaring

Inclined	Surface	Cracked	Uneven
	damaged		thickness

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