General AWHZ14L, AWHZ14LBC, AOHZ14LBC, AWHZ18L, AWHZ18LBC Service Manual

SPLIT TYPE

ROOM AIR CONDITIONER

CEILING WALL type

INVERTER

Models
Indoor unit	Outdoor unit
AWHZ14LBC	AOHZ14LBC
AWHZ18LBC	AOHZ18LBC

CONTENTS

SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . 1 OUTLINE AND DIMENSIONS. . . . . . . . . . 2 REFRIGERANT SYSTEM DIAGRAM . . . . 3 CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . 4 INDOOR PCB CIRCUIT DIAGRAM . . . . . 5 OUTDOOR PCB CIRCUIT DIAGRAM . . . 8 ERROR CONTENTS . . . . . . . . . . . . . . . . . 10 DISASSEMBLY ILLUSTRATION . . . . . . . 11 PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . 14

SPECIFICATIONS

TYPE	Cooling and Heat-pump heating

INDOOR UNIT

AWHZ14LBC

AWHZ18LBC

OUTDOOR UNIT

AOHZ14LBC

AOHZ18LBC

COOLING CAPACITY

4.2 kW

5.2 kW

HEATING CAPACITY

6.0 kW

6.7 kW

ELECTRICAL DATA

POWER SUPPLY

230 V

50 Hz

RUNNING CURRENT

COOLING

4.5 A

6.9 A

HEATING

5.9 A

7.2 A

INPUT WATTS

COOLING

1.02 kW

1.58 kW

HEATING

1.35 kW

1.63 kW

E.E.R.

COOLING

4.12 kW/kW

3.29 kW/kW

HEATING

4.44 kW/kW

4.11 kW/kW

MOISTURE REMOVAL

2.1 L/hr

2.8 L/hr

AIR CIRCULATION-HiGH

COOLING

850 m3/hr

HEATING

940 m3/hr

COMPRESSOR

TYPE

Hermetic type, Inverter,

Three phase

Induction motor, Rotary

DISCRIMINATION

808 - 907 - 80

REFRIGERANT

R410A

1,350 g

FAN MOTOR

POWER SOURCE

230 V

HIGH2

1,550 r.p.m. /

1,750 r.p.m.

HIGH-SPEED

1,450 r.p.m. /

1,650 r.p.m.

INDOOR UNIT

MED-SPEED

1,320 r.p.m. /

1,350 r.p.m.

( cool / heat )

LOW-SPEED

1,050 r.p.m. /

1,150 r.p.m.

QUIET

880 r.p.m. /

1,000 r.p.m.

SUPER-QUIET

730 r.p.m. /

820 r.p.m.

OUTDOOR UNIT

HIGH2

835

/

820 r.p.m.

850

/

900 r.p.m.

( cool / heat )

HIGH-SPEED

820

/

730 r.p.m.

820

/

730 r.p.m.

DIMENSIONS and WEIGHT

INDOOR UNIT

H x W x D

250 x 899 x 298 mm

OUTDOOR UNIT

H x W x D

578 x 790 x 300 mm

INDOOR UNIT

GROSS / NET

17 kg /

13.5 kg

OUTDOOR UNIT

GROSS / NET

43 kg / 39 kg

NOISE LEVEL

HIGH2

47 dB / 47 dB

47 dB / 47 dB

HIGH-SPEED

46 dB / 46 dB

46 dB / 46 dB

INDOOR UNIT

MED-SPEED

43 dB / 39 dB

43 dB / 39 dB

( cool / heat )

LOW-SPEED

35 dB / 34 dB

35 dB / 34 dB

QUIET

29 dB / 29 dB

29 dB / 29 dB

SUPER QUIET

24 dB / 24 dB

24 dB / 24 dB

OUTDOOR UNIT

HIGH2

47 dB / 49 dB

48 dB / 50 dB

( cool / heat )

HIGH-SPEED

46 dB / 47 dB

47 dB / 48 dB

Note : Noise was measured in accordance with JIS standards, Japan.

"HIGH2" means when ability measurement

2006.02.06

1

REFRIGERANT CHARGE (R410A)

Pipe Length	15 m	1,350 g
FULL CHARGE AMOUNT
	20 m	1,450 g
ADDITIONAL REFRIGERANT		20 g / m
MAX PIPE LENGTH		20 m

DIMENSIONS

Models :

AWHZ14LBC, AWHZ18LBC (Unit : mm)

	300
899	298
250
	2,000
	40
	170

Models :

AOHZ14LBC, AOHZ18LBC

578 10

2006.02.06

52		508
	20
		320
	540	125
	790	60	300
	2

REFRIGERANT SYSTEM DIAGRAM

Models :

AWHZ14LBC / AOHZ14LBC

AWHZ18LBC / AOHZ18LBC

Muffler		Heat exchanger
	3-Way Valve	( INDOOR )	Heat exchanger B
				2-Way Valve
			( INDOOR )
Muffler
Compressor			Receiver
	4-Way Valve
Accumulator			Strainer
	Heat exchanger
	( OUTDOOR )		Strainer

Pulse motor valve

Cooling

Heating

Liquid pipe : 6.35 mm

Gas pipe : 12.7 mm

2006.02.06

3

CIRCUIT DIAGRAM

AIR FILTER (LEFT)

																												M			SWITCH (LEFT)
																																3
INDOOR UNIT																							TERMAL
																																1
																							FUSE 102						ORANGE	YELLOW
														AIR FILTER (RIGHT)								SWITCH			WHITE BROWN RED							RED	WHITE	INDICATOR PCB
																			M			(RIGHT)
																							3			1	2	3	4		5	1	2			CN208
														TERMAL									1			1	2	3 4			5	1	2	1	2	3 4 5 6 7		8
														FUSE 102						ORANGE	YELLOW
																		BROWN
CONNECTOR (RED)																	WHITE		RED				RED	WHITE	RED	WHITE	WHITE		WHITE		WHITE	RED	WHITE	RED	WHITE	WHITE WHITE WHITE WHITE	WHITE	WHITE
	1	1	BROWN		RED		1		10WHITE								1	2	3 4			5	1	2										1 2 3 4 5 6 7 8
			RED														1	2	3 4			5	1	2	1	2 3 4				5 6		1	2 3 4	1	2	3 4 5 6 7		8
M 2		2	ORANGE				2		9	WHITE				RED		1		CN201					CN200				CN203					CN202				CN204
LOUVER U	3	3	YELLOW	1 1	WHITE		3		8	WHITE		1 1		WHITE		2
	4	4	GREEN	2 2	WHITE		4		7	WHITE		2 2		WHITE		3	CN206							CONNECTOR BOARD
	5	5		3 3	WHITE		5	CN11 6		WHITE		3 3		WHITE		4
CONNECTOR (WHITE)				4 4	WHITE		6		5	WHITE		4 4		WHITE		5
	1	1	BLUE	5 5	WHITE		7	CN15	4			5 5		WHITE		6																	POWER RELAY
M	2	2	PURPLE	6 6	WHITE		8		3	WHITE		6 6		WHITE		7
	3	3	GRAY	7 7	WHITE		9		2	WHITE		7 7		WHITE		8																	4
LOUVER Z	4	4	WHITE	8 8	WHITE		10		1	RED		8 8				9																				BROWN
	5	5	BLACK	9 9	WHITE		11		1	RED		9 9		WHITE		10
				1010								1010		RED																			3
CONNECTOR (WHITE)				1111	RED		1		2	WHITE		1111				1													TM1					TM2
	1	1	RED	1212	WHITE		2		3	WHITE		1212		WHITE		2
M 2		2	WHITE	1313	WHITE		3		4	WHITE		1313		WHITE		3
RIGHT-LEFT LOUVER	3	3	WHITE	1414			4	CN9	5			1414				4
	4	4	WHITE	1515	WHITE		5		6	WHITE		1515		WHITE		5							WHITE					BLACK		RED
	5	5	WHITE	1616	WHITE		6	CN16	7	WHITE		1616		WHITE		6																	BLUE
CONNECTOR (RED)				1717	WHITE		7		8	WHITE		1717		WHITE		7																					/YELLOW
					WHITE					WHITE				WHITE											GRAY
	1	1	RED	1818	WHITE		8		9	WHITE		1818		WHITE		8
M 2 2			WHITE	1919	WHITE		9		10					WHITE		9
	3	3	WHITE	2020	WHITE		10									10																					GREEN
DIFFUSER	4	4	WHITE				11									CN205							TERMAL				N		L		3				POWER
	5	5 WHITE																					FUSE 102
											TEST																								SOURCE
				BLUE		1 1																	TERMINAL
										1 2		3 4 5
				YELLOW
						2 2
			F M WHITE			3 3		CN4			CN3
				BLACK		4 4
				RED		5 5
						6 6				CONTROLLER PCB
																																	W3
												CN6		CN7				1	CN17							CN12
												1	2	1	2				2	3 4 5						1	2	3
ROOM TEMPERATURE THERMISTOR												BLACK	BLACK	BLACK	BLACK		RED		WHITE	WHITE	WHITE				RED		WHITE	WHITE
																		1	2	3		4				1	2	3
PIPE TEMPERATURE THERMISTOR																		1	2	3		4				1	2	3
																	BLUE		WHITE	BLACK					CN210
																					RED

RECEIVER PCB

UV-LED

UNIT

OUTDOOR UNIT

CHOKE COIL

	L1	L2
			N2							1	1
			I O							2	2
			P		WHITE		TM03			3	3
										4	4
					PURPLE				CN40
			N1				TM04			5	5
ACTIVE FILTER										6	6
										7	7
	MODURE		1	1	BROWN	1	1
										8	8
			2	2	ORANGERED	2	2	CN400		9	9
		CN11	3	3	YELLOW	3	3
			4	4		4	4			1	1
			5	5
			6	6					CN41	2	2
										3	3
-	+							CONTROLLER
										1	1
BLACK								PCB ASSY
	RED									2	2
					ORANGE		TM01		CN70	3	3
	+									4	4
										5	5
					BROWN		TM02			6	6
										7	7
		-
	D201
DISCHARGE TEMP. THERMISTOR									CN42	1	1
										2	2
					BROWNBROWN	1	1	CN60
						2	2
PIPE TEMP. THERMISTOR									W7
									W8
					BLACKBLACK		1
						1		CN61		1	1
						2	2
										2	2
OUTDOOR TEMP. THERMISTOR									CN800	3	3
										4	4
					BLUE
						1	1	CN62		5	5
					BLUE	2	2			6	6
										7	7
					RED		W4			1	1
					WHITE		W2			2	2
									CN700	3	3
		BLACK			BLACK		W1			4	4
					FUSE					5	5
										6	6
				20A-250V			W3			1	1
					GREEN
										3	3
TERMINAL									CN500	2	2
		N L	3

BROWM			1	1		TM303	BLACK
RED
			2	2
ORANGE						W
			3	3
YELLOW						TM304	WHITE
			4	4
GREEN						V
			5	5
BLUE							RED
			6	6	CN301	TM305
PURPLE
			7	7
GRAY						U
			8	8
WHITE
			9	9
			10 10
BLACK			11 11

BROWN			TRANSISTOR
			PCB ASSY
RED	1	1
	2	2			S	(V)
	3	3
WHITE				R			C
	4	4	CN302
					C M
	5	5		(U)			(W)
	6	6
BLACK
	7	7		COMPRESSOR
BROWN	1	1
RED			CN303
	2	2
		P TM301		N TM302
YELLOW
BLUE
RED
BLACK			F M FAN MOTOR
WHITE
YELLOW
BROWN
RED
BROWN
BLUE			PMV EXPANSION VALVE
ORANGE

YELLOW

WHITE

BLACK

BLACK	4WV	4-WAY VALVE

2006.02.06

4

INDOOR PCB CIRCUIT DIAGRAM

Models : AWHZ14LBC

AWHZ18LBC

		RMH-4
	BLUE	RED
UV-LED UNIT	WHITE	WHITE
	BLACK	WHITE
	RED
		WHITE

TEST

NH5

RED

BLACK

F. M. WHITE

YELLOW

BLUE

FAN MOTOR

CN17 JB-5

1

2

3

4

5

CN3

1

2

3

4

5

CONTROLLER PCB ASSY

AWHZ14LBC : K05DS-0500HSE-F1 AWHZ18LBC : K05DS-0501HSE-F1

CN4

S5 (6-5) B-XARK

6

5

4

3

2

1

CN11

JC-10

10

9

8

7

6

5

4

3

2

1

CN9

JC-10 1 2 3 4 5 6 7 8 9 10

CN15

JZ-11 1 2 3 4 5 6 7 8 9 10 11

CN16

JZ-11 1 2 3 4 5 6 7 8 9 10 11

WHITE WHITE WHITE WHITE WHITE WHITE

WHITE WHITE RED

RED

WHITE WHITE WHITE

WHITE WHITE WHITE WHITE WHITE

RED

WHITE WHITE WHITE WHITE WHITE WHITE WHITE WHITE WHITE

RED WHITE WHITE

WHITE WHITE WHITE WHITE WHITE

WHITE WHITE

CN2		HUMIDITY SENSOR
JB-14		PHR-3
2	GRAY	V I N
3	WHITE	DO RHU-222A
4	BLACK	GND
CN7		PIPE TEMPERATURE THERMISTOR
2P-SCN

1BLACK

2BLACK

	TERMINAL
	N			BLUE
		THERMAL		BROWN
		FUSE 103
OUTDOOR UNIT	L
	3
		RED	WHITE	BLACK

	CN6	ROOM TEMPERATURE THERMISTOR
	2P-SAN
POWER SOURCE	1	BLACK
AC220-240V	2	BLACK
50 / 62Hz

TM2	TM1	CN12		CN210
22007	22007 4 K1 3	B3B-PASK		JB-3	RECEIVER PCB ASSY
		1	RED	1
		3	WHITE	3	K05DS-0500HSE-SO
		2	WHITE	2

	RJW-18
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	10
11	11
12	12
13	13
14	14
15	15
16	16
17	17
18	18

RJW-20

11

22

33

44

55

66

77

88

99

1010

1111

1212

1313

1414

1515

1616

1717

1818

1919

2020

		CN206		CN201
		JB-10
				B5B-XASK
	RED	1
				1
	WHITE	2
				2
	WHITE	3
				3
	WHITE	4
				4
	WHITE	5
				5
	WHITE	6
	WHITE	7		CN200
	WHITE	8		B2B-XASK
		9		1
	WHITE	10		2
		CN205
		JB-10		CN203
	RED	1		JB-6
	WHITE	2	CONNECTOR PCB	1
		3		2
	WHITE	5	K05DS-0500HSE-CNO	3
				4
	WHITE	4
	WHITE	6		5
				6
	WHITE	7
	WHITE	8		CN202
	WHITE	9		JB-4 1
	WHITE	10		2
				3
				4
	BROWN	ZHR-5		CN204
				S8B-PASK
	RED
		M	LOUVER-U	1
	ORANGE
			( UP / DOWN )	2
	YELLOW
				3
	GREEN
				4
	BLUE	ZHR-5
				5
	PURPLE	M	LOUVER-Z	6
	GRAY
				7
			( UP / DOWN )
	WHITE
				8
	BLACK
	RED	ZHR-5
	WHITE	M	LOUVER
	WHITE
			( RIGHT / LEFT )
	WHITE
	WHITE	ZHR-5
	RED
	WHITE	M
	WHITE
	WHITE
	WHITE		DIFFUSER

ZHR-5

WHITE

BROWN

RED M CLEAN FILTER-R

ORANGE

YELLOW

RED	LIMIT SWITCH-R
WHITE
	B5B-XASK	WHITE ZHR-5
RED
WHITE		BROWN	M	CLEAN FILTER-L
WHITE		RED
		ORANGE
WHITE		YELLOW
WHITE
RED	B2B-XASK
		RED
WHITE		WHITE		LIMIT SWITCH-L
	JB-8
RED	1
WHITE	2
WHITE	3
WHITE	4
WHITE	5
WHITE	6
WHITE	7	INDICATOR PCB ASSY
WHITE	8
	CN208	K04DU-0500HSD-DO

CN207 S2B-PH

1

2

2006.02.06

5