Samsung AQ12A5MB, AQ12A5ME, AQ09A5ME, SH09ZA5, AQ07A5ME Service Manual

ROOM AIR CONDITIONER

INDOOR UNIT	OUTDOOR UNIT
AQ12A5(6)MB	UQ12A5(6)MB
AQ12A5(6)ME	UQ12A5(6)ME
AQ09A5(6)ME	UQ09A5(6)ME
SH09ZA5(6)	SH09ZA5(6)X
AQ07A5(6)ME	UQ07A5(6)ME
SH07ZA5(6)	SH07ZA5(6)X
AQ09A7(8)ME	UQ09A7(8)ME
SH09ZA7(8)	SH09ZA7(8)X
AQ07A7(8)ME	UQ07A7(8)ME
SH07ZA7(8)	SH07ZA7(8)X

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. Sep. 2000. Printed in Korea.

Code No. DB81-00181A(2)

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.

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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MEMO

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2. Product Specifications

2-1 Table

						Model			AQ12A5(6)MB			AQ12A5(6)ME			AQ09A5(6)ME/SH09ZA5(6)AS07A3(4)ME/SC07ZA3(4)				AS12A1(2)ME/SC12ZA1(2)/SC12ZA1(2)AAQ07A5(6)ME/SH07ZA5(6)			AQ09A7(8)ME/SH09ZA7(8)			AQ07A7(8)ME/SH07ZA7(8)
Item
								Indoor unit			Outdoor unit	Indoor unit		Outdoor unit	IndoorIndoorunitunit		OutdoorOutdoorunitunit		IndoorIndoorunitunit		OutdoorOutdoorunitunit	Indoor unit		Outdoor unit	Indoor unit		Outdoor unit
Type						-			Wall-mounting			Wall-mounting			Wall-mounting				WallWall-mounting-mounting			Wall-mounting			Wall-mounting
		Cooling				BTU/h(KW)			12000			12000 (3.4)			90007500(2.72)				750012000(2.3)			9000 (2.64)			7500 (2.2)
		Heating				BTU/h(KW)			13000			13000 (3.7)			10000- (2.95)				8000 (2- .38)			10000 (2.93)			8000 (2.34)
		Dehumiditying				I/h			1.9				1.9			1.94				01.9.4			1.4			0.9
		Air volume			Cooling	m3/min		7.4			19	7.4		19	6.50.3		20.185		75..46		1918	6.0		20.5	5.6		20.5
Perfor-					Heating			8.1			19	8.1		19	6.7-			- 18	5-.5		- 18	6.7		20.5	5.5		20.5
mance		Noise			Cooling	dB		41			53	41		53	3833		4751		3835		5050	38		51	35		50
					Heating			41			53	41		53	38-			- 51	35-		- 50	38		51	35		50
		Energy efficiency ratio			Cooling	BTU/h	W		9.375				10.0		910.375.0					1010.0.3			9.47			10.0
					Heating				10.0				10.6		10.-752					10.959-			10.75			10.96
		Power				V-Hz			1-220 -60			1-220 / 240-50			1-220 / 240-50				11-220- 20//240240-50-50			1-220 / 240-50			1-220 / 240-50
		Power Consumption			Cooling	W			1280				1200			750960				7501170			950			750
					Heating				1300				1230			930-				730-			930			730
		Operating Current			Cooling	A			6.0				5.4			34.34				35.3.0			4.2			3.3
					Heating				6.2				5.5			4-.2				3.3-			3.9			3.2
Power		Power factor			Cooling	%			97				96.6			948.89				10198..78			98.3			98.8
					Heating				95.3				97.2			96-.3				96.-7			10.37			99.2
		Starting current				A			30				30			30				3030			30			30
		Power cord			Length	m			-				-			-				--			-			-
					Number of core wire				-				-			-				--			-			-
		Fuse capacity				A			250V-10 / 16A			250V-10 / 16A			250V-10 / 16A				250V250V-10-10//16A16A			250V-10 / 16A			250V-10 / 16A
		Outer			Width x Height	mm		790 x 245 x 165			762 x 532 x 280	790 x 245 x 165		762 x 532 x 280	790790x x245245x x165165		660660x 470x 497x 242x 235		790790xx245245xx165165		720660x 532x 497x 245x 235	790 x 245 x 165		660 x 470 x 242	790 x 245 x 165		660 x 470 x 242
		Dimension			x Depth
						inch		31.1 x 9.6 x 6.5			30 x 20.9 x 11	31.1 x 9.6 x 6.5		30 x 20.9 x 11	3131.1.1x x9.96.6x x6.65.5		6.260 xx1819.5.6xx99.3		3131..11xx99..66xx66..55		28.263 xx2119.0.6xx99.6.3	31.1 x 9.6 x 6.5		26 x 18.5 x 9.5	31.1 x 9.6 x 6.5		26 x 18.5 x 9.5
		Weight						7.7			35	7.7		35	7.7.7		2529		77..77		38.290	7.7		2.5	7.7		25
		Refrigerant pipe			Liquid	mm x L(MT)			ø6.35 x 5			ø6.35 x 5			ø6.35 x 5				ø6ø6.35.35xx55				ø6.35 x 5			ø6.35 x 5
					GAS	mm x L(MT)			ø12.7 x 5			ø12.7 x 5			ø9.52 x 5				ø9ø12.52.7xx55				ø9.52 x 5			ø9.52 x 5
Size		Drain hose				D x L(mm)			ø18 x 2000			ø18 x 2000			ø18 x 2000				ø18ø18xx20002 0			ø18 x 2000			ø18 x 2000
		Compressor		Type					Rotary				Rotary		Rotary					RotaryOTARY			Rotary			Rotary
				Motor	Type			-			-	-		-	--		-	-	--		- -	-		-	-		-
					Rated output			-			-	-		-	--		-	-	--		1215-	-		-	-		-
		Blower		Type				Cross-flow			Propeller	Cross-flow		Propeller	CrossCross-flow-flow		PropellPropellerr		CrossCross--flowflow		PropellerPropeller	Cross-flow		Propeller	Cross-flow		Propeller
				Motor	Type			Resin			steel	Resin		steel	ResinResin		steelsteel		ResinResin		steelsteel	Resin		steel	Resin		steel
					Rated output	W		15			25	15		25	1515		2525		1515		2525	15		25	15		25
Heat exchanger								2ROW 12STEP			1ROW 20STEP	2ROW 12STEP		1ROW 20STEP	2ROW2ROW12STEP12STEP		1ROW1ROW20STEP18STEP		2ROW2ROW12STEP12STEP		2ROW1ROW20STEP18STEP	2ROW 12STEP		1ROW 18STEP	2ROW 12STEP		1ROW 18STEP
Refrigerant control unit									CAPILLARY TUBE			CAPILLARY TUBE			CAPILLARY TUBE				CAPILLARYCAPI LARYTUBETUBE			CAPILLARY TUBE			CAPILLARY TUBE
Freezer oil capacity									410				410			360				360410			360			360
Refrigerant to change(R-22)									800				820			67000				6301070			670			630
Protection device								MRA 12002-9200/MRA 12002-12008				MRA 12030-12008			MRAC1208612054-12008-9622				MRARAC 1208630-120089622			MRA 12110-12008			MRA 12086-12008
Cooling test Condition												INDOOR UNIT : DB27°C WB19°C										OUTDOOR UNIT : DB35°C WB24°C
Maximum operation Condition												INDOOR UNIT : DB32°C WB23°C										OUTDOOR UNIT : DB43°C WB26°C

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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
		Mode is changed in the following order			: Heat Mode
3				: Cool Mode
				: Dry Mode
		Press	until the appearance. the air condition cools or heats
		the room as quickly as possible. after 30minutes, the air,
		the airconditioner is reset automatically to the previous mode
4		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.
		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
9

Each 5 way indicator on the indoor unit comes on in order.

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3-1

Operating Instructions and Installation

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

1.AUTO MODE : In this mode, operation mode(COOL, HEAT) 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)

ÆT= -1°C, -2°C, 0°C+1°C+2°C

ÆT 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, then switch to the selected fan speed. This period is to allow the indoor unit's heatexchanger 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. And each time you press the button the 5WAY func-tion is changed as follow.

STD NATURE POWER SAVING SILENCE POWER OFF

Each time you press This button, 5WAY function is changed in the following order STD(standard) NATURE POWER(High-speed) Saving(PowerSaving) Quite

STD(standard)( ) : General operation

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 quitely

Each mode has Auto, Cool and SLEEP operation designed in advance.

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. If the one

more time press the button, blades location is stop.

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

Operating Instructions and Installation

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.

11. SELF Diagnosis

LED DISPLAY

Check Point	TIMER	STD NATURE POWER SAVING SILENCE

Indoor unit room temperature sensor error(open or short)

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)

: LED	: LED off
blinking

12.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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MEMO

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4. Disassembly and Reassembly

Stop operation of the air conditioner and remove the power cord before repairing the unit.

4-1 Indoor Unit

No	Parts		Procedure	Remark
1	Front Grille	1)	Stop the air conditioner operation and block
			the main power.
		2)	Separate tape of front panel upper.

3)Contract the second finger to the left, and right handle and pull to open the inlet grille.

4)Take the left and right filter out.

*Taking off the deodorizing filter.

5)Loosen one of the right fixing screw and separate the terminal cover.

6)Loosen three fixing screws of front grille.

7)Pull the upper left and right of discharge softly for the outside cover to be pulled out.

8)Pull softly the lower part of discharge and push it up.

Caution;

Assemble the front panel and fix the hooks of left and right.

Samsung Electronics

4-1

Disassembly and Reassembly

No	Parts		Procedure	Remark
2	Ass’y Tray Drain.	1) Do “1”above
		2)	Take all the connector of PCB upper side out.
			(Inclusion Power cord)
		3)	Separate the outdoor unit connection wire
			from the terminal block.
		4)	If pulling the Main PCB up. it will be taken
			out.
3	Electrical Parts	1) Do “1”, “2”, above
	(Main PCB)		Separate the drain hose from the extension
			drain hose.
		2)	Pull tray drain out from the back body.

4

Heat Exchanger

1) Do “1” and “2”, “3”, above

2)Loosen two fixing earth screws of right side.

3)Separate the connection pipe.

4)Separate the holder pipe at the rearside.

5)Loosen the three fixing screws of right and left side.

6)Lifting the heat exchanger up a little to push the up side for separation from the indoor unit.

5	Fan Motor and	1) Do “1” “2” ”3” “4”, above.
	Cross Fan
		2)	Loosen the fixing two screws and separate
			the motor holder.
		3)	Loosen the fixing screw of fan motor.
			(By use of M3 wrench)
		4)	Separate the fan motor from the fan.

5)Separate the fan from the left holder bearing.

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4-2 Outdoor Unit

• UQ12A5(6)M

No	Parts		Procedure	Remark
1	Common Work	1)	Loosen the fixing screw and separate
			Handle-Cabi RH.
		2) Separate the connection wire from the
			nal block.

3)Loosen 6 fixing screws and separate the upper cabinet.

4) Loosen the fixing screw of Ass'y E-part.

5)Loosen 5 fixing screws and separate the side cabinet.

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4-3

Disassembly and Reassembly

No	Parts	Procedure	Remark
2	Fan-Motor	1) Loosen 4 fixing screw of the Guard-Fan.

2)Remove the nut flange (Turn to the right to remove, as it is a left hand screw)

3)Separate the fan.

4)Loosen four fixing screws to separate the motor.

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Disassembly and Reassembly

•SH09ZA5(6)X

•UQ09A5(6)M

•SH07ZA5(6)X

•UQ07A5(6)M

No	Parts		Procedure	Remark
1	Common Work	1)	Loosen the fixing two screws and separate
			the cover E-parts.
		2)	Separate the connection wire from the ter
			nal block.
		3)	Loosen five fixing screws and separate the
			cabi Upper.

4) Loosen two fixing screws of Ass'y E-part.

5)Loosen nine fixing screws and separate the cabi side.

2	Fan and Motor	1)	Do “1”, above.
		2)	Loosen four screws and seperaate Guard Fan
			from front cabinet

Samsung Electronics

4-5

Disassembly and Reassembly

No

Parts

Procedure

Remark

2)Remove the nut flange (Turn to the right to remove, as it is a left hand screw)

3)Separate the fan.

4)Loosen four fixing screws to separate the motor.

3	Heat Exchanger	1) Do “1”, 2 above.
		2)	Loosen two fixing screws of left and right
			side.
		3)	Disassemble the inlet and outlet pipe by
			welding.
		4)	Separate the heat exchanger.

4	Compressor	1) Do “1”, above.
		2)	Loosen the nut on the terminal cover and
			open the terminal cover.
		3)	Disassemble the inlet and outlet pipe of com-
			pressor by welding.
		4)	Disassemble the inlet and outlet pipe of con-
			denser by welding
		5) Loosen the three bolts of the lower part.
		6) separate the compressor.

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