Page 1
SERVICE MANUAL
AIR-CONDITIONER
MULTI SPLIT WALL TYPE
FILE NO. A00-9805
SUPPLEMENT
RAS-10SKH-E-1
RAS-10SKH-E-1
x
2, RAS-13SKH-E
RAS-10SKH-E-1
x 2 x 3 x 4
x 2 / RAS-M18SAH-E
x 4 / RAS-4M36SAH-E
/
RAS-3M31SAH-E-1
PRINTED IN JAPAN, Apr.,1998 ToMo
Page 2
CONTENTS
1. DESCRIPTION .................................................................................................................3
2. SPECIFICATIONS............................................................................................................ 4
3. CONSTRUCTION VIEWS .............................................................................................. 11
3-1. Indoor Unit ................................................................................................................................ 11
3-2. Outdoor Unit ............................................................................................................................. 12
4. REFRIGERANT CYCLE DIAGRAMS ............................................................................ 14
5. WIRING DIAGRAM ........................................................................................................ 17
6. SPECIFICATIONS OF ELECTRICAL PARTS ............................................................... 19
6-1. Indoor Unit ................................................................................................................................ 19
6-2. Outdoor Unit ............................................................................................................................. 20
7. MICROCOMPUTER BLOCK DIAGRAMS ..................................................................... 21
8. OPERATION DESCRIPTIONS....................................................................................... 23
8-1. FAN ONLY Operation ............................................................................................................... 2 3
8-2. COOL Operation....................................................................................................................... 23
8-3. DRY Operation.......................................................................................................................... 24
8-4. HEAT Operation........................................................................................................................ 25
8-5. AUTO Operation ....................................................................................................................... 26
8-6. ECONO. Mode ........................................................................................................................... 27
8-7. Current Limit Control............................................................................................................... 27
8-8. High-Temperature Limit Control............................................................................................. 28
8-9. Low-Temperature Limit Control (Cooling Operation) .......................................................... 28
8-10. Cool Airflow Prevention Control (Heating Operation) ......................................................... 29
8-11. Defrost Operation..................................................................................................................... 29
8-12. Auto Restart Function ............................................................................................................. 3 1
8-13. Operation Control of Following Outdoor Unit....................................................................... 33
9. TROUBLESHOOTING CHART...................................................................................... 34
9-1. What to be Prechecked First................................................................................................... 34
9-2. Primary Judgement of Trouble Sources ................................................................................ 36
9-3. Troubleshooting Flowcharts ................................................................................................... 40
9-4. How to Check the Remote Control (Including the Indoor P.C. Board) ............................... 47
10. PART REPLACEMENT.................................................................................................. 52
10-1. Indoor Unit ................................................................................................................................ 5 2
10-2. Microcomputer ......................................................................................................................... 54
10-3. Outdoor Unit ............................................................................................................................. 5 5
11. CAUTIONS ON REPLACEMENT OF P.C. BOARD ASSEMBLY ................................... 64
12. EXPLODED VIEWS AND PARTS LIST ......................................................................... 65
12-1. Indoor Unit (1) ........................................................................................................................... 65
Indoor Unit (2)........................................................................................................................... 66
Indoor Unit (3)........................................................................................................................... 67
12-2. Outdoor Unit ............................................................................................................................. 6 8
– 2 –
Page 3
1. DESCRIPTION
RAS-M18SAH-E
RAS-M18SAH-E can be used alone with two indoor units RAS-10SKH-E-1.
RAS-3M31SAH-E-1
in a combination of two outdoor units
RAS-13SAH-E (upper unit, one compressor)
RAS-M18SAH-E (lower unit, two compressors)
The upper unit can be used with one indoor unit RAS-13SKH-E and the lower
unit with two indoor units RAS-10SKH-E-1.
RAS-4M36SAH-E
The lower unit RAS-M18SAH-E can be used as a double decker under the
combination name RAS-4M36SAH-E with four indoor units RAS-10SKH-E-1.
– 3 –
Page 4
2. SPECIFICATIONS
RAS-10SKH-E-1 x 2 / RAS-M18SAH-E
Item
Capacity *1 kW
Phase
Power source V
Hz
Power consumption kW
Power factor %
Running current
Starting current A
Moisture removal lit/h
Noise
Refrigerant
Refrigerant control
Interconnection pipe
Condensate drain pipe Outer diameter mm
INDOOR UNIT
Dimensions Width mm
Net weight kg
Evaporator type
Indoor fan type
Air volume Medium fan m3/h
Fan motor output W
Air filter
OUTDOOR UNIT
Dimensions Width mm
Net weight kg
Condenser type
Outdoor fan type
Airflow volume (220/230/240V) m3/h
Fan motor output W
Compressor Model
Safety device
Auto louver
Usable outdoor temperature range °C
Indoor (H/M/L) dB
Outdoor (220/230/240V) dB
Name of refrigerant
Rated volume kg
Gas side size mm
Connection type
Liquid side size mm
Connection type
Maximum length (One way) m *2
Maximum height difference
Indoor unit
Outdoor unit
Height mm
Depth mm
High fan m3/h
Low fan m3/h
Height mm
Depth mm
Output W
A
Indoor/Outdoor
m
Model
RAS-10SKH-E-1 x 2 / RAS-M18SAH-E
Cooling Heating
220V 230V 240V 220V 230V 240V
5,0 5,0 5,0 5,6 5,6 5,6
Single
220/230/240
50
2,04/2,10/2,18 1,78/1,86/1,96
95/92/89 94/91/87
220V 230V 240V 220V 230V 240V
0,22/9,54 0,22/9,7 0,22/9,96 0,22/8,38 0,22/8,66 0,22/9,16
19
1,2
41/36/31
52/53/54
R-22
1,4 (0,7+0,7)
Capillary tube
9,52
Flare connection
6,35
Flare connection
15
5
16
RAS-10SKH-E-1
265
790
174
8
Finned tube
Cross flow fan
600
500
400
19
Polypropylene net filter (Washable)
RAS-M18SAH-E
538
830
300
55
Finned tube
Propeller
1830/1920/2010
28
PH120T1-4C x 2
750W x 2
Fuse, Overload relay
Yes
21 ~ 43 – 5 ~ 21
Specifications are subject to change without notice.
– 4 –
Page 5
Item
Capacity *1 kW
Phase
Power source V
Hz
Power consumption kW
Power factor %
Running current
A
Indoor/Outdoor
Model
RAS-10SKH-E-1 / RAS-M18SAH-E
Cooling Heating
220V 230V 240V 220V 230V 240V
2,50 2,50 2,50 2,80 2,80 2,80
Single
220/230/240
50
1,02/1,05/1,09 0,89/0,93/0,98
95/92/89 94/91/87
220V 230V 240V 220V 230V 240V
0,11/4,77 0,11/4,85 0,11/4,98 0,11/4,19 0,11/4,33 0,11/4,58
– 5 –
Page 6
RAS-10SKH-E-1 x 2, RAS-13SKH-E / RAS-3M31SAH-E-1
Item
Capacity *1 kW
Phase
Power source V
Hz
Power consumption kW
Power factor %
Running current
Starting current A
Moisture removal lit/h
Noise
Refrigerant
Refrigerant control
Interconnection pipe
Condensate drain pipe Outer diameter mm
INDOOR UNIT
Dimensions Width mm
Net weight kg
Evaporator type
Indoor fan type
Air volume Medium fan m3/h
Fan motor output W
Air filter
OUTDOOR UNIT
Dimensions Width mm
Net weight kg
Condenser type
Outdoor fan type
Airflow volume (220/230/240V) m3/h
Fan motor output W
Compressor Model
Safety device
Auto louver
Usable outdoor temperature range °C
Indoor (H/M/L) dB
Outdoor (220/230/240V) dB
Name of refrigerant
Rated volume kg
Gas side size mm
Connection type
Liquid side size mm
Connection type
Maximum length (One way) m *2
Maximum height difference
Indoor unit
Outdoor unit
Height mm
Depth mm
High fan m3/h
Low fan m3/h
Height mm
Depth mm
Output W
A
Indoor/Outdoor
m
Model
RAS-10SKH-E-1 x 2, RAS-13SKH-E / RAS-3M31SAH-E-1
Cooling Heating
220V 230V 240V 220V 230V 240V
8,45 8,50 8,50 9,60 9,65 9,70
Single
220/230/240
50
3,30/3,38/3,48 2,97/3,09/3,23
96/93/90 94/93/89
220V 230V 240V 220V 230V 240V
0,37/15,24 0,37/15,36 0,37/15,71 0,37/13,92 0,37/14,14 0,37/14,70
19+19+25
1,2+1,2+2,0
RAS-10SKH-E-1 : 41/36/31 RAS-13SKH-E : 44/39/36
52/53/54
R-22
2,28 (0,7+0,7+0,88)
Capillary tube
RAS-10SKH-E-1 : 9,52 RAS-13SKH-E : 12,7
Flare connection
6,35
Flare connection
15
RAS-10SKH-E-1 : 5 RAS-13SKH-E : 6
16
RAS-10SKH-E-1 RAS-13SKH-E
265
790
174
8
Finned tube
Cross flow fan
600 650
500 560
400 510
19
Polypropylene net filter (Washable)
RAS-3M31SAH-E-1
1125
830
300
106
Finned tube
Propeller
1830/1920/2010
28
PH120T1-4C x 2 + PH170T2-4L2
750W x 2 + 1100W x 1
Fuse, Overload relay
Yes
21 ~ 43 – 5 ~ 21
Specifications are subject to change without notice.
– 6 –
Page 7
Item
Capacity *1 kW
Phase
Power source V
Hz
Power consumption kW
Power factor %
Running current
Item
Capacity *1 kW
Power source V
Power consumption kW
Power factor %
Running current
Item
Capacity *1 kW
Power source V
Power consumption kW
Power factor %
Running current
Item
Capacity *1 kW
Power source V
Power consumption kW
Power factor %
Running current
A
Indoor/Outdoor
Phase
Hz
A
Indoor/Outdoor
Phase
Hz
A
Indoor/Outdoor
Phase
Hz
A
Indoor/Outdoor
Model
Model
Model
Model
RAS-10SKH-E-1, RAS-13SKH-E / RAS-3M31SAH-E-1
Cooling Heating
220V 230V 240V 220V 230V 240V
5,95 6,00 6,00 6,80 6,85 6,90
Single
220/230/240
50
2,28/2,33/2,39 2,08/2,16/2,25
97/94/91 95/93/90
220V 230V 240V 220V 230V 240V
0,26/10,47 0,26/10,51 0,26/10,73 0,26/9,73 0,26/9,81 0,26/10,12
RAS-10SKH-E-1 x 2 / RAS-3M31SAH-E-1
Cooling Heating
220V 230V 240V 220V 230V 240V
5,0 5,0 5,0 5,6 5,6 5,6
Single
220/230/240
50
2,04/2,10/2,18 1,78/1,86/1,96
95/92/89 94/91/87
220V 230V 240V 220V 230V 240V
0,22/9,54 0,22/9,70 0,22/9,96 0,22/8,38 0,22/8,66 0,22/9,16
RAS-13SKH-E / RAS-3M31SAH-E-1
Cooling Heating
220V 230V 240V 220V 230V 240V
3,45 3,50 3,50 4,00 4,05 4,10
Single
220/230/240
50
1,26/1,28/1,30 1,19/1,23/1,27
98/96/92 95/95/93
220V 230V 240V 220V 230V 240V
0,15/5,70 0,15/5,66 0,15/5,75 0,15/5,54 0,15/5,48 0,15/5,54
RAS-10SKH-E-1 / RAS-3M31SAH-E-1
Cooling Heating
220V 230V 240V 220V 230V 240V
2,50 2,50 2,50 2,80 2,80 2,80
Single
220/230/240
50
1,02/1,05/1,09 0,89/0,93/0,98
95/92/89 94/91/87
220V 230V 240V 220V 230V 240V
0,11/4,77 0,11/4,85 0,11/4,98 0,11/4,19 0,11/4,33 0,11/4,58
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Page 8
RAS-10SKH-E-1 x 4 / RAS-4M36SAH-E
Item
Capacity *1 kW
Phase
Power source V
Hz
Power consumption kW
Power factor %
Running current
Starting current A
Moisture removal lit/h
Noise
Refrigerant
Refrigerant control
Interconnection pipe
Condensate drain pipe Outer diameter mm
INDOOR UNIT
Dimensions Width mm
Net weight kg
Evaporator type
Indoor fan type
Air volume Medium fan m3/h
Fan motor output W
Air filter
OUTDOOR UNIT
Dimensions Width mm
Net weight kg
Condenser type
Outdoor fan type
Airflow volume (220/230/240V) m3/h
Fan motor output W
Compressor Model
Safety device
Auto louver
Usable outdoor temperature range °C
Indoor (H/M/L) dB
Outdoor (220/230/240V) dB
Name of refrigerant
Rated volume kg
Gas side size mm
Connection type
Liquid side size mm
Connection type
Maximum length (One way) m *2
Maximum height difference
Indoor unit
Outdoor unit
Height mm
Depth mm
High fan m3/h
Low fan m3/h
Height mm
Depth mm
Output W
A
Indoor/Outdoor
m
Model
RAS-10SKH-E-1 x 4 / RAS-4M36SAH-E
Cooling Heating
220V 230V 240V 220V 230V 240V
10,0 10,0 10,0 11,2 11,2 11,2
Single
220/230/240
50
4,08/4,20/4,36 3,56/3,72/3,92
95/92/89 94/91/87
220V 230V 240V 220V 230V 240V
0,44/19,08 0,44/19,4 0,44/19,92 0,44/16,76 0,44/17,32 0,44/18,32
19+19+19+19
1,2+1,2+1,2+1,2
41/36/31
54/55/56 55/56/57
R-22
2,8 (0,7+0,7+0,7+0,7)
Capillary tube
9,52
Flare connection
6,35
Flare connection
15
5
16
RAS-10SKH-E-1
265
790
174
8
Finned tube
Cross flow fan
600
500
400
19
Polypropylene net filter (Washable)
RAS-4M36SAH-E
1125
830
300
119
Finned tube
Propeller
1830/1920/2010
28
PH120T1-4C
750W x 4
Fuse, Overload relay
Yes
21 ~ 43 – 5 ~ 21
Specifications are subject to change without notice.
– 8 –
Page 9
Item
Capacity *1 kW
Phase
Power source V
Hz
Power consumption kW
Power factor %
Running current
Item
Capacity *1 kW
Power source V
Power consumption kW
Power factor %
Running current
Item
Capacity *1 kW
Power source V
Power consumption kW
Power factor %
Running current
A
Indoor/Outdoor
Phase
Hz
A
Indoor/Outdoor
Phase
Hz
A
Indoor/Outdoorr
Model
Model
Model
RAS-10SKH-E-1 x 3 / RAS-4M36SAH-E
Cooling Heating
220V 230V 240V 220V 230V 240V
7,50 7,50 7,50 8,40 8,40 8,40
Single
220/230/240
50
3,06/3,15/3,27 2,67/2,79/2,94
97/94/91 95/93/90
220V 230V 240V 220V 230V 240V
0,33/14,31 0,33/14,55 0,33/14,94 0,33/12,57 0,33/12,99 0,33/13,74
RAS-10SKH-E-1 x 2 / RAS-M36SAH-E
Cooling Heating
220V 230V 240V 220V 230V 240V
5,0 5,0 5,0 5,6 5,6 5,6
Single
220/230/240
50
2,04/2,10/2,18 1,78/1,86/1,96
95/92/89 94/91/87
220V 230V 240V 220V 230V 240V
0,22/9,54 0,22/9,70 0,22/9,96 0,22/8,38 0,22/8,66 0,22/9,16
RAS-10SKH-E-1 / RAS-4M36SAH-E
Cooling Heating
220V 230V 240V 220V 230V 240V
2,50 2,50 2,50 2,80 2,80 2,80
Single
220/230/240
50
1,02/1,05/1,09 0,89/0,93/0,98
95/92/89 94/91/87
220V 230V 240V 220V 230V 240V
0,11/4,77 0,11/4,85 0,11/4,98 0,11/4,19 0,11/4,33 0,11/4,58
– 9 –
Page 10
Note : *1
• Capacity is based on the following temperature conditions.
JIS C9612-1994Condition
T emperature
Indoor unit inlet air temperature
Outdoor unit inlet air temperature
Notes : *2
(DB)
(WB)
(DB)
(WB)
Cooling
27°C
19°C
35°C
24°C
Heating
20°C
—
7°C
6°C
RAS-13SKH-E / RAS-3M31SAH-E-1
• No additional refrigerant required.
• This air conditioner accepts a connection piping length of up to 15m and a head of up to 6m.
• There is no need to add the refrigerant as long as the total length of the connection piping is up to 15m.
RAS-10SKH-E-1 / RAS-M18SAH-E,
RAS-10SKH-E-1 / RAS-3M31SAH-E-1,
RAS-10SKH-E-1 / RAS-4M36SAH-E
• This air conditioner accepts a connection piping length of up to 15m and a head of up to 5m.
• There is no need to add the refrigerant as long as the total length of the connection piping is up to 10m.
• There is need to add the refrigerant 20g/m as long as the each length of the connection piping is up to 11m to
15m.
– 10 –
Page 11
3-1. Indoor Unit
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RAS-10SKH-E-1
RAS-13SKH-E
Air inlet
3. CONSTRUCTION VIEWS
Air filter
790
Heat exchanger
174
265
Air outlet
232 326 232
Drain hose (0,54m)
Hanger
Connecting pipe (0,39m)
13SKH-E
10SKH-E-1: (Flare ø9,52)
: (Flare ø12,7)
790
Hanger
321
Connecting pipe (0,49m)
(Flare ø6,35)
Front panel
Back body
47
47
Knock out system
50
10
Knock out system
50
10
65965,5
450
Hanger
326
66 or more
Minimum
distance
46
2,5
Minimum
distance
17 20
265
to wall
120 or more 120 or more
3,5
40,5
Center line
to ceiling
HangerHanger
Installation
plate outline
790
– 11 –
12626931976
65,5
Hanger
For stud bolt
(ø8~ø10)
For stud bolt
(ø6)
Minimum
distance to wall
20 2037
40,5
60,5
Wireless
remote
control
Remote
control
holder
55
136
16
112,8
559,6
Page 12
3-2. Outdoor Unit
RAS-M18SAH-E
Liquid side
Electric
parts cover
6,35)
φ
(Flare
9,52)
φ
Gas side
(Flare
600 or more
10
φ
8-
11x14
φ
φ
for
4x
anchor bolt
10 anchor bolt)
φ
8-
φ
11x14 hole
6 hole
φ
φ
8-
(for
6-
(for fixing outdoor unit)
Service
port
FOR UNIT B
54545491
FOR UNIT A
Air inlet
600
Installation dimension
Air inlet
325
100 or more
600 or more
Air outlet
100 or more
φ25 Drain outlet
120
A
R10
600
50
36
Detail Drawing
A
52
23
325
325
6 hole
φ
301
11x14 hole
φ
Fan guard
Handle
420
φ
830 60 344
90 600 90 50
538
300
– 12 –
Page 13
RAS-3M31SAH-E-1
RAS-4M36SAH-E
600 or more
4-φ11x14
for φ8-φ10
anchor bolt
Liquid side
Electrical
parts cover
(Flare φ6,35)
Size
φ12,7
φ9,52
Gas side (Flare)
Model name
RAS-3M31SAH-E-1
RAS-4M36SAH-E
Liquid side
Electrical
parts cover
(Flare φ6,35)
Gas side
(Flare φ9,52)
Air inlet
600
Air inlet
Mounting dimension of anchor bolt
325
100 or more
φ25 Drain outlet
120
600 or more
300
Air outlet
100 or more
4-φ11x14 hole
(for φ8 φ10 anchor bolt)
8-φ6 hole
(for fixing outdoor unit)
186
Service
port
54677,5
Handle
60
Service
port
54545491
325 (pitch)(8,5) (8,5)
600 90 55
835 60 342
A
52,5
325
R12
600
Detail Drawing
36
50
A
23
φ 6 hole
311
325
φ11x14 hole
1125
Drain outlet
90
29
– 13 –
Page 14
4. REFRIGERANT CYCLE DIAGRAMS
RAS-10SKH-E-1 x 2 / RAS-M18SAH-E
P
Packed valve Packed valve
(3/8) (1/4)
T1
Indoor Unit
Indoor heat exchanger A
Indoor heat exchanger B
Heating
Cooling
Accumulator
50Hz
Standard
High temperature*1
Low temperature
Standard
High temperature
Low temperature
4-way valve
PH120T1-4C
PH120T1-4C
Outdoor heat exchanger
Outdoor Unit
Standard pressure
P
(kg/cm²G)
10SKH-E-1
15,0
19 ~ 23
12,5
6,0
6,5
4,0
Check
valve
CompressorCompressor
Surface temp. of heat
exchanger interchanging
pipe T1 (°C)
10SKH-E-1
40,0
52,0 ~ 59,0
35,0
12,0
15,0
2,0
Capillary
for cooling & heating
ø1,7x800
Dryer
Capillary
for heating
ø1,7x300
Fan speed
(indoor)
High
Low
High
High
High
Low
Cooling
Heating
Ambient temp.
conditions DB/WB
(°C)
Indoor
20/–
27/–
20/–
27/19
32/23
21/15
Outdoor
7/6
21/15
–10/–10
35/24
43/26
21/15
Note :
• Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor.)
1 • During heating overload, the high temperature limit control operation is included.
*
– 14 –
Page 15
RAS-10SKH-E-1 x 2, RAS-13SKH-E / RAS-3M31SAH-E-1 (Upper and Lower Unit)
0,49m
(Connecting
pipe)
ø12,7
O.D.:
12,7mm
Cooling
Heating
RAS-13SKH-E
Indoor Unit
Cooling
Heating
Heat exchanger
Cross flow fan
P
Packed valve
(ø12,7)
Gas container connection (Reinstall etc.)
Heating
4-way valve
Cooling
Compressor
PH170T2-4L2
Accumulator
Capillary tube
ø1,7x400
Heat exchanger
T1
Packed valve
(ø6,35)
Capillary tube
ø0,6x1500
Capillary tube
ø1,2x400
0,39m
(Connecting
pipe)
ø6,35
O.D.:
6,35mm
P
4-way valve
Comp-
ressor
PH120T1-4C
Accumulator
RAS-10SKHE-1 x 2
Indoor Unit
Indoor heat
exchanger A
Indoor heat
exchanger B
Packed
valve
(3/8) (1/4)
Packed
valve
Check
valve
Comp-
ressor
PH120T1-4C
T1
Capillary
for heating
ø1,7x300
Capillary
for cooling
& heating
ø1,7x800
Dryer
Cooling
Heating
Propeller fan
Outdoor Unit
Mark ( ) means check points of Gas Leak
50Hz
Standard
Heating
High temperature*1
Low temperature
Standard
Cooling
High temperature
Low temperature
Refrigerant
R-22 0,88kg
Standard pressure
P
(kg/cm²G)
13SKH-E
10SKH-E-1
15,0
19 ~ 23
12,5
5,0 6,0
6,0 6,5
4,0
Surface temp. of heat
exchanger interchanging
pipe T1 (°C)
13SKH-E 10SKH-E-1
43,0 40,0
52,0 ~ 59,0
35,0
10,0 12,0
14,0 15,0
2,0
Outdoor heat
exchanger
Outdoor Unit
Fan speed
(indoor)
High
Low
High
High
High
Low
Note :
• Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor.)
1 • During heating overload, the high temperature limit control operation is included.
*
Cooling
Heating
Ambient temp.
conditions DB/WB
(°C)
Indoor
20/–
27/–
20/–
27/19
32/23
21/15
Outdoor
7/6
21/15
–10/–10
35/24
43/26
21/15
– 15 –
Page 16
RAS-10SKH-E-1 x 4 / RAS-4M36SAH-E (Upper and Lower Unit)
P
4-way valve
Comp-
ressor
PH120T1-4C
Accumulator
Indoor Unit
Indoor heat
exchanger A
Indoor heat
exchanger B
Packed
valve
(3/8) (1/4)
Packed
Compressor
PH120T1-4C
valve
Check
valve
T1
Capillary
for heating
ø1,7x300
Capillary
for cooling
& heating
ø1,7x800
Dryer
P
4-way valve
Comp-
ressor
PH120T1-4C
Accumulator
Indoor Unit
Indoor heat
exchanger A
Indoor heat
exchanger B
Packed
valve
(3/8) (1/4)
Packed
Comp-
ressor
PH120T1-4C
valve
Check
valve
T1
Capillary
for heating
ø1,7x300
Capillary
for cooling
& heating
ø1,7x800
Dryer
Heating
Cooling
Outdoor heat
exchanger
Outdoor Unit
50Hz
Standard
High temperature*1
Low temperature
Standard
High temperature
Low temperature
Cooling
Heating
Standard pressure
P
(kg/cm²G)
10SKH-E-1
15,0
19 ~ 23
12,5
6,0
6,5
4,0
Surface temp. of heat
exchanger interchanging
pipe T1 (°C)
10SKH-E-1
40,0
52,0 ~ 59,0
35,0
12,0
15,0
2,0
Outdoor heat
exchanger
Outdoor Unit
Fan speed
(indoor)
High
Low
High
High
High
Low
Note :
• Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor.)
1 • During heating overload, the high temperature limit control operation is included.
*
Cooling
Heating
Ambient temp.
conditions DB/WB
(°C)
Indoor
20/–
27/–
20/–
27/19
32/23
21/15
Outdoor
7/6
21/15
–10/–10
35/24
43/26
21/15
– 16 –
Page 17
5. WIRING DIAGRAM
INDOOR UNIT
RAS-13SKH-E / RAS-3M31SAH-E-1 (Upper Unit)
SG01
BLK
GRN&YEL
L
N
POWER
TERMINAL
1
2
3
4
BLK
WHI
RED
BLU
GRN&YEL
BLOCK
INDOOR UNIT
INDOOR
TERMINAL
BLOCK
RAS-10SKH-E-1x2/RAS-M18SAH-E
RAS-10SKH-E-1x2/RAS-3M31SAH-E-1 (Lower Unit)
RAS-10SKH-E-1x2/RAS-4M36SAH-E
(Upper and Lower Unit)
SG01
BLK
TERMINAL
INDOOR
TERMINAL
BLOCK
GRN&YEL
L
N
POWER
BLOCK
BLK
1
2
WHI
RED
3
BLU
4
P04
GRN & YEL
11
2
3
4 4
CN27
DSA
BRW
BLU
RY02
T02
C.T.
WHI
THERMAL FUSE
77°C × 2
R109
VARISTOR
F01 FUSE
343
4
BLK
RY03
RY04
T3,15A
250V
RY01
CR01
CR02
GRY
1
1
R21
LOUVER
MOTOR
GRY
3
CN04
3
R116
IC04
C15
1
BLU
1
1
INFRARED RAYS RECEIVE
AND INDICATION PARTS
2 3
BLU
2
2
L01
CN07
BLU
3
3
BRW
CN27
4
567 8 9
BLU
BLU
4
567 8 9
4
567 8 9
BLU
BLU
BLU
DSA
P04
RY02
11
2
3
4 4
ORN
PNK
YEL
346
5
346
5
R01
C01
PNK
BLK
WHI
THERMAL FUSE
VARISTOR
343
4
T02
C.T.
WHI
RY03
RED
BRW
2
1
2
1
DB01
C02
CN13
CN25
77°C × 2
R109
F01 FUSE
T3,15A
250V
RY01
BLK
RY04
CR01
CR02
DC
MOTOR
BLK
BLU
YEL
RED
WHI
4
3
5
2
1
4
3
5
2
1
MAIN P.C. BOARD
MCC-713
T01
C06
IC
IC01
2
1
CN03
2
1
BLK
BLK
THERMO
SENSOR
(TA)
LOUVER
MOTOR
GRY
GRY
3
1
CN04
1
3
R116
C15
R21
INFRARED RAYS RECEIVE
AND INDICATION PARTS
FAN MOTOR
CN10
DC35V
DC12V
DC7V
DC0V
IC02
2
1
CN01
2
1
BLK
BLK
HEAT
EXCHANGER
SENSOR
(TC)
IC04
1
BLU
1
1
2 3
BLU
2
2
L01
CN07
BLU
3
3
4
BLU
4
4
PNK
BLU
5
5
R01
C01
567 8 9
BLU
BLU
PNK
567 8 9
567 8 9
ORN
YEL
RED
BRW
346
2
1
346
2
1
DB01
C02
IC01
CN13
BLK
WHI
CN25
DSA : Surge absorbor
C.T : Current trans
FAN MOTOR
DC
MOTOR
BLK
BLU
YEL
RED
WHI
4
3
5
2
1
4
3
5
2
1
CN10
MAIN P.C. BOARD
MCC-713
T01
C06
IC
2
1
CN03 CN01
2
1
BLK
BLK
THERMO
SENSOR
(TA)
GRN&YEL
L
N
POWER
TERMINAL
BLOCK
BLK
WHI
1
2
RED
BLU
3
4
DC 35V
DC 12V
DC 7V
DC 0V
IC02
2
1
2
1
BLK
BLK
HEAT
EXCHANGER
SENSOR
(TC)
BLK
P04
GRN & YEL
4 4
CN27
BRW
BLU
11
2
3
SG01
DSA
RY02
T02
C.T.
WHI
THERMAL FUSE
77°C × 2
R109
VARISTOR
F01 FUSE
T3,15A
250V
343
4
BLK
RY03
RY04
CR01
CR02
RY01
GRY
GRY
3
1
1
3
R21
COLOR IDENTIFICATION
:
BROWN
BRW
:
RED
RED
:
WHITE
WHI
:
YELLOW
YEL
:
BLUE
BLU
:
BLACK
BLK
:
GRAY
GRY
:
PINK
PNK
:
ORANGE
ORN
:
GRN&YEL
LOUVER
MOTOR
CN04
R116
IC04
C15
1
BLU
1
1
INFRARED RAYS RECEIVE
AND INDICATION PARTS
GREEN &
YELLOW
ORN
PNK
YEL
BLU
346
5
346
5
CN07
R01
C01
L01
4
2 3
567 8 9
BLU
BLU
BLU
BLU
BLU
PNK
BLK
WHI
4
2
567 8 9
3
4
2
567 8 9
3
DB01
CN13
CN25
RED
2
2
BRW
1
1
MOTOR
BLU
WHI
4
5
4
5
C02
IC
IC01
1
1
BLK
DSA : Surge absorbor
C.T : Current trans
DC
FAN MOTOR
BLK
YEL
RED
3
2
1
3
2
1
CN10
MAIN P.C. BOARD
MCC-713
T01
C06
2
2
BLK
CN03
THERMO
SENSOR
(TA)
DC35V
DC12V
DC7V
DC0V
IC02
2
1
CN01
2
1
BLK
BLK
HEAT
EXCHANGER
SENSOR
(TC)
OVERLOAD RELAY
THERMOSTAT FOR
COMPRESSOR
COMPRESSOR
BLK
1
RED
2
WHI
3
BLK
4
TERMINALS
BLK
1
RED
2
WHI
3
BLK
4
TERMINALS
BLK
L
RED
N
YEL & GRN
TRANSFORMER
RED
WHI
BLU
YEL
ORN
FAN MOTOR
OUTDOOR UNIT
1
2
3
TERMINALS
BLK
BLK
BLK
RED
CAPACITOR
PNK
WHI
4 3
RY01
CN09
1
1
3
3
CN04
4 3
RY02
CN10
1
1
CN05
3
3
F01
Fuse
5
5
3
3
SG01
300V
1
1
CN01
1
1
CN02
3
3
CN
131
03
2 2
3
CN08 CN07 CN06
5
5
BLK RED
BLK
RED
WHI
CAPACITOR
4
BRW
BRW
SOLENOID
CAPACITOR
COIL
RED
RED
FAN MOTOR
MAIN P.C. BOARD (MCC-738)
R01
R02
C01 C02
RY06
RY04
CR04 CR02 CR01
1
1 3 1 3
3
1
3
BLK BLK
1 2
UNIT B
COIL FOR
RED
4 WAY
VALVE
GRN & YEL
CHASSIS
WHI
BLK
UNIT A
COIL FOR
4 WAY
VALVE
RY03
OVERLOAD
RELAY
BLK
OVERLOAD
RELAY
BLK
CN11
1
2
3
4
5
6
7
8
CN12
1
2
313
CN13
1
2
313
CAPACITOR
WHI
PNK
COMPRESSOR
CAPACITOR
WHI
PNK
COMPRESSOR
HEAT
BLK
EXCHANGER
SENSOR
BLK
(TE)
HEAT
BLK
EXCHANGER
SENSOR
BLK
(TE)
RED
RED
– 17 – – 18 –
Page 18
6-1. Indoor Unit
RAS-10SKH-E-1
RAS-13SKH-E
6. SPECIFICATIONS OF ELECTRICAL PARTS
No.
1
Fan motor (for indoor)
Thermo. sensor
2
(TA-sensor)
3
DC-DC transformer (T01)
4
Microcomputer
Power relay (RY01),
5
Common relay (RY02)
Heat exchanger sensor
6
(TC-sensor)
Line filter (L01)
7
Diode (DB01)
8
Capacitor (C02)
9
10
Fuse (F01)
Relay (for outdoor fan motor,
11
solenoid coil) (RY03, RY04)
Parts name
Type
ICF-35-19-3
or
TICF-35-19-3
(microprocessor)
SWT-34
TMP87CK40F
DI1U
(microprocessor)
RF-103YOR6
RBV-406
CEAUF2W101M20
MT3
AJQ1341
Specifications
DC 35V, 19W
10kΩ at 25°C
DC390V, Secondary DC35V, 12V, 7V
Coil : DC12V 75mA, Rated AC250V 20A
10kΩ at 25°C
10mH, AC 0,6A
4A, 600V
100µF, 450V
T3,15A, 250V
Coil DC12V, 33mA, Rated 1A 250V AC
Power supply IC (IC01)
12
Varistor (R21, R109)
13
Resistor (R01)
14
Current trans (T02)
15
Louver motor
16
MA2830-FJ
15G561K
ERF-5TK5R6
CT422920S-01
MP35EA7
4A, 600V
560V
5,6 Ω, 5W
Output (Rated) 2W, 10 poles, 1 phase DC 12V
– 19 –
– 19 –
Page 19
6-2. Outdoor Unit
RAS-3M31SAH-E-1 (Upper Unit)
No. Parts name Type
1 Compressor PH170T2-4L2
2 Fan motor (for outdoor) AF-230-28P
Running capacitor
3
(for fan motor)
Running capacitor
4
(for compressor)
Solenoid coil
5
(for 4-way valve)
6 Overload relay J-MRA99257-9200
7 Thermostat for Compressor CS-7
SK-50FMP
SK-40CMP35U1
LB60012
RAS-M18SAH-E
RAS-3M31SAH-E-1 (Lower Unit)
RAS-4M36SAH-E (Upper and Lower Unit)
Specifications
Output (Rated) 1100W, 2 pole, 1 phase, 220/230/240V, 50Hz
Winding resistance (Ω)
(at 20°C)
Output (Rated) 28W, 6 pole, 1 phase, 220/230/240V, 50Hz
Winding resistance (Ω)
(at 20°C)
500V AC, 1,5µF
400V AC, 35µF
AC : 200/240V
UT 8,0A (80°C), OPEN 145±5°C, CLOSE 75±11°C
130°C OFF, 70°C ON
Red-Black White-Black
2,22 3,04
Red-Black White-Black
198 160
No. Parts name Type
1 Compressor PH120T1-4C
2 Fan motor (for outdoor) AF-230-28P
Running capacitor
3
(for fan motor)
Running capacitor
4
(for compressor)
Solenoid coil
5
(for 4-way valve)
6 Overload relay J-MRA99269-9200
7 Transformer FT-70
8 Outdoor P.C. board MCC-738
Heat exchanger sensor
9
(TE-sensor)
SK-45FMP
SK-40CMP30U1
LB60012
(microprocessor)
Specifications
Output (Rated) 750W, 2 pole, 1 phase, 220/230/240V, 50Hz
Winding resistance (Ω)
(at 20°C)
Output (Rated) 28W, 6 pole, 1 phase, 220/230/240V, 50Hz
Winding resistance (Ω)
(at 20°C)
450V AC, 2µF
400V AC, 30µF
AC : 200/240V
U/T 6,8A (90°C), OPEN 135±5°C, CLOSE 69±11°C
AC : 220/240V
10kΩ at 25°C
Red-Black White-Black
4,53 8,73
Red-Black White-Black
198 160
– 20 –
Page 20
7. MICROCOMPUTER BLOCK DIAGRAMS
RAS-13SKH-E / RAS-3M31SAH-E-1 (Upper Unit)
Operation
C. P. U
Functions
Timer
Display
• Louver Control
Display
ECONO.
Sign Display
• 3-minutes Delay at Restart for Compressor
PRE-DEF.
Sign Display
• Motor Revolution Control
Indoor
Fan Motor
• Processing
(Temperature Processing)
• Timer
Signal
Louver
ON/OFF
Signal
ON/OFF
4-Way Valve
Signal
ON/OFF
Outdoor Fan
Signal
ON/OFF
Compressor
Motor
Louver
Relay
Relay
RY01 RY03 RY04
Relay Driver, Louver Driver
Relay
4-Way ValveOutdoor Fan MotorCompressor
RY02
Relay
Main Unit Control Panel
Current Sensor
Thermo. Sensor
Heat Exchanger Sensor
Initializing Circuit
(Compressor Current)
Infrared Rays Signal Receiver
Oscillator Circuit
Clock Frequency
Rays
Infrared
Remote Control
Circuit
Power
Supply
Thermo. Setting
Fan Speed Selection
Operation Mode Selection
Operation (START/STOP)
AUTO, COOL, DRY, HEAT, FAN ONLY
– 21 –
Noise Filter
ON TIMER Setting
OFF TIMER Setting
ECONO.
Louver AUTO Swing
Louver Direction Setting
AC220/230/240V ~
50Hz
Page 21
RAS-10SKH-E-1
RAS-10SKH-E-1
RAS-10SKH-E-1
/
RAS-M18SAH-E
/
RAS-3M31SAH-E-1 (Lower Unit)
/
RAS-4M36SAH-E (Upper and Lower Unit)
50Hz
C. P. U
ON/OFF Signal
Compressor (A)
Compressor (B)
4-Way
Valve (A)
RY03
Relay
Relay
Driver
ON/OFF Signal
ON/OFF Signal
4-Way Valve (A)
4-Way
Valve (B)
RY04
Relay
ON/OFF Signal
4-Way Valve (B)
Outdoor
Fan Motor
RY06
Relay
Outdoor Fan
ON/OFF Signal
Circuit
Initializing
Oscillator Circuit
Clock Frequency
• Compressor (A), (B) Control
• 4-Way Valve (A), (B) Control
• Outdoor Fan Control
• Defrost Control
Circuit
Power Supply
AC 220/230/240V
Transformer
Relay
ON/OFF Signal
Compressor (A)
Heat Exchanger Sensor (A)
Heat Exchanger Sensor (B)
RY01
ON/OFF Signal
4-Way Valve (A)
Compressor (A)
Indoor
Unit (A)
Outdoor Fan
ON/OFF Signal
– 22 –
RY02
Relay
ON/OFF Signal
Compressor (B)
ON/OFF Signal
4-Way Valve (B)
Compressor (B)
Indoor
Unit (B)
Outdoor Fan
ON/OFF Signal
Note:
If unit (A) and (B) operation modes are different (as Cool, Heater Auto), operating priority is
given for “Heat” mode unit, and “Cool” mode unit will be stopped due to overload relay actuate.
Page 22
8. OPERATION DESCRIPTIONS
8-1. FAN ONLY Operation
(MODE of the remote control : FAN ONLY)
(1) During this mode, the relay R Y01 is alw a ys turned
off so that only the indoor fan is operated. RY02
is always turnd on.
1) When the FAN is set to AUTO, the indoor fan
motor operates as shown in Fig. 8-1-1.
2) When the FAN is set to LOW, MED, or HIGH,
the indoor fan motor operates with a constant
in volume as listed in Table 8-1-1.
28
27
Room temp.
26
25
24
Fig. 8-1-1 Auto setting of air volume
Table 8-1-1 Manual setting of FAN SPEED
Indication of
FAN SPEED
HIGH
MED
LOW(+)
LOW
LOW
HIGH Air volume (m3/h)
13SKH-E 10SKH-E-1
8-2. COOL Operation
(MODE of the remote control : COOL)
(1) Compressor, 4-way valve, outdoor fan and
operation display are controlled as shown in Fig.
8-2-1.
+1
(Room temp. – Set temp.)
Set
0
temp.
ON
ON ON
OFF
(RY01)
Compressor
Fig. 8-2-1
(2) Relays RY01 and RY02 are turned on to energize
the outdoor unit, and a cool operation is carried
out.
1) When the FAN is set to AUTO, the indoor fan
motor operates as shown in Fig. 8-2-2.
2) When the FAN is set to LOW, MED, or HIGH,
the indoor fan motor operates with a constant
in volume as listed in Table 8-1-1.
ON
OFF
OFF
(RY02)
(RY04)
4-way valve
Common relay
Outdoor fan
(RY03)
OPERATION
display
LOW
MED
HIGH
510 400
560 500
650 600
(2) Once the setting is made, the operation mode is
memorized in the microcomputer so that the same
operation can be effected thereafter simply by
pushing the START/STOP button.
AUTO
+4
+3
+2
+1
(Room temp. – Set temp.)
Set
0
temp.
RY01
OFF
HIGH
LOW(+)
(continuous)
Fig. 8-2-2
(3) Once the setting is made, the operation mode is
memorized in the microcomputer so that the same
operation can be effected thereafter simply by
pushing the START/STOP button.
– 23 –
MED
LOW
LOW
FAN
Manual
According
to the set
position
Page 23
8-2-1. Louver Control
(1) By pushing the SET button of the remote control
during the operation, the louver can be set to the
desired position.
And the louver position is stored in the microcomputer, the louvers will be set to the position
automatically at the next operation.
(2) When the AUTO b utton is pushed, the louver ver-
tically swings within range of 25deg.
8-3. DRY Operation
(MODE of the remote control : DRY)
(1) Compressor, 4-way valve, outdoor fan and
operation display are controlled as shown in Fig.
8-3-1.
ON:6min.
+3
ON:6min.
OFF:4min.
OFF:4min.
+2
+1
(Room temp. – Set temp.)
Set
0
temp.
ON
ON:5min.
OFF:5min.
OFF
(RY01)
Compressor
Common relay
OFF
(RY02)
ON
ON:5min.
OFF:5min.
OFF
(RY04)
(RY03)
4-way valve
Outdoor fan
OPERATION
Fig. 8-3-1
• The microprocessor tur ns the compressor on
and off at regular intervals (4 to 6 minutes on
and/or off). During the compressor off, the
indoor fan will operate in the super low position.
• The indoor fan will operate in the A UT O position.
(2) The pattern of operation depending on the relation
between room temperature and set temperature
is shown below:
display
– 24 –
Room temp.
Set temp.+1
Set temp.
Compressor
Outdoor fan
Indoor fan
ON ON ON ON
OFF OFF OFF
L. *S.L. S.L.L. L. S.L. L.
*Super Low
Fig. 8-3-2
Page 24
8-4. HEAT Operation
(MODE of the remote control : HEAT)
(1) Compressor, 4-way valve, outdoor fan and
operation display are controlled as shown in Fig.
8-4-1.
0
OFF
ON
ON
(RY04)
(RY02)
Common relay
(RY03)
4-way valve
Outdoor fan
OPERATION
–1
(Room temp. – Set temp.)
Fig. 8-4-1
OFF
ON ON
ON
(RY01)
Compressor
display
8-4-1. Louver Control
(1) By pushing the SET button of the remote control
during the operation, the louver can be set to the
desired position.
(2) When the A UTO button is pushed, the louver ver-
tically swings within range of 25deg.
And the louver position is stored in the microcom-
puter , and at the next oper ation, the louv ers will be
set to the stored position automatically at the next
operation.
8-4-2. Cool Airflow Control
(1) If the indoor heat-exchanger temperature detected
by the indoor heat-exchanger sensor is 20°C or
below , the indoor fan stops and if the temperature
rises to 25°C or above, the fan is restarted.
Details are in 8-10.
(2) Relays RY01 and RY02 are turned on to energize
the outdoor unit, and a heat operation is carried
out. The indoor fan motor operates as shown in
Fig. 8-4-2, when the FAN is set to A U TO.
The motor operates with a constant air volume as
listed in Table 8-1-1, when the FAN is set to LOW ,
MED, or HIGH.
RY01 OFF
Set
0
temp.
-1
-2
-3
-4
(Room temp. – Set temp.)
AUTO
LOW
LOW(+)
MED(-)
MED
FAN
Manual
According
to the set
position
Fig. 8-4-2
(3) Once the setting is made, the operation mode is
memorized in the microcomputer so that the same
operation can be effected thereafter simply by
pushing the START/STOP button.
– 25 –
Page 25
8-5. AUTO Operation
(MODE of the remote control : AUTO)
(1) One of the 3 modes, Cooling, Fan only and Heat-
ing is selected according to room temperature at
which operation is to start, as shown in Fig. 8-5-1.
The Fan mode will continue until room temperature reaches a level at which another mode is
selected.
8-5-1. Temporary Auto
When the TEMPORARY button is pushed, the set
temperature is fixed at 24°C and controlled in accordance with the chart shown in Fig. 8-5-1.
Cooling mode
+4
Cooling mode
+1
Fan only mode
–1
Heating mode
(Room temp. – Set temp.)
(The same cooling mode as the room temperature control is set at set temp. –1˚C)
The Louver moved downward.
(The same cooling mode as the room temperature control is set at set temp. –1˚C)
(Only the indoor fan operates at Low speed)
(The same heating mode as the room temperature control is set at set temp. +1˚C)
Fig. 8-5-1
– 26 –
Page 26
8-6. ECONO. Mode
8-7. Current Limit Control
When the ECONO. button is pushed, during COOL,
HEAT and AUTO operation, the OPERATION display
is turned off and the ECONO. display is lit and the
indoor unit operates quietly and mildly with controlling
airflow .
8-6-1. Cooling
(1) In the ECONO. mode, the set temp. by the remote
control is changed automatically as shown in Fig.
8-6-1.
(2) Fan speed → LOW
(˚C)
Set temp.
is changed
+2
Set temp.
is changed
+1
Set temp.
ECONO. button
is pushed
1H 2H TIME0H
The microprocessor detects the input current so as to
prevent it exceeds a specified value by means of
controlling the outdoor fan control as described in (1)
and (2).
(1) Current limit control (Cooling)
Control is performed as shown below by detecting
the compressor operation current with a current
sensor (C.T).
Input
current
13SKH: 13,5A
10SKH: 10,0A
13SKH: 12,5A
10SKH: 9,0A
I
4
I
3
Compressor Outdoor fan
More than I4 continues
for 3 seconds
OFF
3
More than I
continues
for 5 minutes
OFF
ON
Fig. 8-7-1
(2) Current limit control (Heating)
Control is performed as shown in Fig. 8-7-2.
Fig. 8-6-1
8-6-2. Heating
(1) In the ECONO. mode, the set temp. by the remote
control is changed automatically as shown in Fig.
8-6-2.
(2) Fan speed → LOW
ECONO. button
is pushed
1H 2H TIME0H
Set temp.
-1
Set temp.
is changed
-2
Set temp.
is changed
(˚C)
Input
current
13SKH: 13,5A
10SKH: 10,0A
13SKH: 12,5A
10SKH: 9,0A
13SKH: 10,0A
10SKH: 8,0A
13SKH: 9,0A
10SKH: 7,5A
Compressor Outdoor fan
More than I4 continues
for 3 seconds
I
4
I
3
I
2
I
1
More than I
OFF
3
continues
for 5 minutes
OFF
ON OFF
ON
Fig. 8-7-2
Fig. 8-6-2
– 27 –
Page 27
8-8. High-Temperature Limit Control
8-8-1. Heating Operation (Indoor Unit)
The microprocessor detects the indoor heat exchanger
temperature so as to prevent exceeding the condensate pressure.
Control is performed as shown in Fig. 8-8-1.
8-9. Low-Temperature Limit Control
(Cooling Operation)
The microprocessor detects the indoor heat exchanger
temperature so as to prevent freezing up the indoor
heat exchanger.
Control is performed as shown in Fig. 8-9-1 and 8-9-2.
Heat exchanger
temperature
(˚C)
60
*
1
53
52
*
1 ····· Only outdoor fan is turned off.
Compressor,
Outdoor fan
OFF
ON
Fig. 8-8-1
8-8-2. Cooling, Heating and Dry Operation
(Outdoor Unit)
The microprocessor detects the outdoor heat exchanger temperature so as to prevent exceeding the
condensate pressure.
Control is performed as shown in Fig. 8-8-2.
<RAS-13SKH-E>
Heat exchanger
temperature
(˚C)
6
2
< RAS-10SKH-E-1>
Heat exchanger
temperature
(˚C)
7
5
Fig. 8-9-1
Compressor
Less than 2˚C continues
Compressor
Less than 5˚C continues
Outdoor fan
ON
for 5 minutes
OFF
Outdoor fan
ON
for 5 minutes
OFF
Heat exchanger
temperature
(˚C)
58
51
Outdoor fan
Fig. 8-9-2
Forced
OFF
Normal
ON
Fig. 8-8-2
– 28 –
Page 28
8-10. Cool Airflow Prevention Control
(
)
(Heating Operation)
(1) During the heating operation, the indoor fan speed
is controlled automatically in accordance with the
indoor heat exchanger temperature to prevent
blowing the cool air.
Control is performed as shown in Fig. 8-10-1 and
8-10-2.
<RAS-13SKH-E>
Heat exchanger
temperature
(˚C)
35
32
30
20
Fig. 8-10-1
Indoor fan speed
According to the
set position
U.L. (Ultra Low)
Room temp.
<
Set temp.
OFF
Room temp.
>
Set temp.
S.L (Super Low)
8-11. Defrost Operation
During the heating operation, the outdoor heat
exchanger temperature goes down and sometimes it
is frozen.
In this case, the air conditioner stops the heating
operation and starts the defrost operation to melt ice.
8-11-1. Condition to Start the Defrost
Operation
The defrost operation starts whichever below
conditions are specified.
(1) When the cumulative compressor operation time
is longer than 40 or 90 minutes and difference
between the indoor heat exchanger temperature
and the room temperature is less than the
specified value. (This value is decided by the
microprocessor.) (Control e xample is shown in Fig.
8-11-1. In case of B or C, the defrost operation
starts.)
(2) When the current limit control or the high
temperature limit control is performed for total of
90 minutes.
< RAS-10SKH-E-1>
Heat exchanger
temperature
(˚C)
30
25
20
Indoor fan speed
According to the
set position
U.L. (Ultra Low)
Room temp.
<
Set temp.
OFF
Room temp.
>
Set temp.
S.L (Super Low)
Fig. 8-10-2
(2) As soon as the defrost operation starts, the in-
door fan stops.
(˚C)
D
19
10
Indoor heat exchanger temp.
–Room temp.
A
40 90
B
Fig. 8-11-1 (Indoor fan speed : M)
Cumulative
C
compressor
operation time
min.
– 29 –
Page 29
8-11-2. Defrost Operation Time Control
<In case of B>
(1) The heating operation is performed for at least 40
minutes.
(2) The maximum defrost operation time is 6 minutes.
The defrost operation time for the 4th cycle is 10
minutes. (When the outdoor temperature is very
low, however, the defrost operation time is 10
minutes.)
8-11-3. Ending Condition at Defrost
Operation
(1) When the compressor current becomes 7,5A or
more during defrost operation, the defrost operation stops and the heat operation restarts. (The
current sensor detects the compressor current.)
(2) The defrost operation continues for at most 6
minutes or 10 minutes.
DEFROST LAMP :
minutes40minutes40minutes40minutes
Heating
Defrost
Max 6 minutes 10 minutes
Heating
1 cycle
Defrost
Heating
40
Defrost
Heating
Defrost
Fig. 8-11-2
<In case of C>
(1) The heating operation is performed for at least 90
minutes.
(2) The defrost operation time is 10 minutes .
• During defrost operation, the PRE-DEF. lamp is
on and the indoor and outdoor fans are off.
• The compressor start protection timer is interlocked with the PRE-DEF. lamp. So the PREDEF. lamp is off (the fans stop) for about 3 minutes after the START/STOP button is turned
on. When the compressor is turned on, the
PRE-DEF. lamp comes on. After the heat exchanger is preheated to about 30°C or higher,
the PRE-DEF. lamp goes off, and the indoor
fan starts.
– 30 –
Page 30
8-12. Auto Restart Function
This unit is equipped with an Automatic restarting
facility which allows the unit to restart and resume the
set operating conditions in the ev ent of a pow er supply
shutdown without the use of the hand control.
The operation will resume without warning three
minutes after the power is restored.
The Auto Restart function is set not to work on
shipment from the factory, and so it is necessar y to
set it to function as required.
• When the system is stand-by (not running)
8-12-1. How to Set the Auto Restart
To set the Auto Restart function, proceed as follows:
Access the TEMPORARY button located in the lower
right hand corner beneath the hinged front panel of
the indoor unit (please refer to section on PARTS
NAME). The power supply to the unit must be on the function will not be set if the power is off.
To enable the Auto Restart function, press the
TEMPORARY button continuously for three seconds.
The unit will acknowledge the setting and beep three
times. The system will now restart automatically.
The above Auto Restart settings can be carried out:
Operation
Press the TEMPORARY button
continuously more than three
seconds.
0
TEMPORARY
• When the system is operating
Operation
Press the TEMPORARY button
continuously more than three
seconds.
0
TEMPORARY
Motion
Stand-by
↓
The system starts to operate. The green light will be lit.
↓ about three seconds after
3S
The unit beeps three times. The orange light will be lit.
↓
The system is operating. The orange light is lighting.
If the system is not required to run at this time, press the TEMPORARY
button once more or use the remote control and the unit will stop.
Motion
Operating The green light is lit.
↓
The system stops to operate. The green light is turned off.
↓ about three seconds after
3S
The unit beeps three times.
↓
The system stops.
If the system is not required to stop at this time, use the remote control
and to restart.
During subsequent operation, the orange light is lit.
• The Auto Restart function will not accept an
instruction if timer operation with the remote control
is selected.
(Please refer to the section on setting the timer or
setting the louver.)
• During louver swing (A U T O) operation, after restart
by the Auto Restart function the louver s wing stops.
– 31 –
Page 31
8-12-2. How to Cancel the Auto Restart
To cancel the Auto Restart function, proceed as follows:
Repeat the setting procedure: the unit will acknowledge the instruction and bleep three times.
• When the system is stand-by (not running)
The system will now be required to manually restart
with the remote control after the main supply is turned
off.
Cancellation is carried out:
Operation
Press the TEMPORARY button
continuously more than three
seconds.
0
TEMPORARY
• When the system is operating
Operation
Press the TEMPORARY button
continuously more than three
seconds.
0
TEMPORARY
Motion
Stand-by
↓
The system starts to operate. The orange light will be lit.
↓ about three seconds after
3S
The unit beeps three times. The green light will be lit.
↓
The system is operating.
If the system is not required to run at this time, press the TEMPORARY
button once more or use the remote control and the unit will stop.
Motion
Operating The orange light is lit.
↓
The system stops to operate. The orange light is turned off.
↓ about three seconds after
3S
The unit beeps three times.
↓
The system stops.
If the system is not required to stop at this time, use the remote control
and to restart.
During subsequent operation, the green light is lighting.
8-12-3. In Case of Power Failure During the
Timer Operation
(1) If ON-TIMER operation is reserved with setting of
Auto Restart operation, it is cancelled with power
failure. (The OPERATION lamp on the main unit
goes on and off to inform of power f ailure.) In that
case, try to reserve ON-TIMER operation once
again.
(2) If OFF-TIMER operation is reserved without set-
ting of Auto Restart operation, the reservation is
cancelled with power failure. (The OPERATION
lamp on the main unit goes on and off to inform of
power failure.) In that case, try to reserve OFFTIMER operation. When Auto Restart operation
is set, OFF-TIMER reservation is also cancelled
with power failure.
– 32 –
Page 32
8-13. Operation Control of Following
Outdoor Unit
RAS-M18SAH-E
RAS-3M31SAH-E-1 (Lower Unit)
RAS-4M36SAH-E (Upper and Lower Unit)
8-13-1. In Case of Operation in a Single
Room
The outdoor unit operates by instruction from the indoor unit.
8-13-2. In Case of Concurrent Operation in
Two Rooms
Heat exchanger of outdoor unit is common use f or two
indoor units.
• Unit (A) and (B) cannot operate on different mode
(as (A) unit for Cool, (B) unit f or Heat) at the same
time.
• If Cool operation and Heat operation are concurrently performed, the priority is given to Heat operation, and Cool operation is exchanged to Fan
operation.
(3) Control in defrost operation
1) When either one of the indoor units performs
the defrost operation, the other unit also controls the defrost operation.
2) Turn off immediately the 4-way valve of the indoor unit which received the Defrost signal, and
after 12 sec. later, also turn off the outdoor fan
and the 4-way valve in the other room.
3) The concurrent defrost control time is 3 minutes and 50 seconds in the unit which did not
receive the Defrost signal, and after then, control is performed according to the instruction
from the indoor unit. In this case, the outdoor
fan is turned on if the operation signal is output
from one of two indoor units though the other
unit continues the defrost operation.
(1) Control in normal operation
The outdoor fan is turned on when ON signal is
output from either one of the indoor units in two
rooms.
(2) Control of heating high-temperature releasing and
current releasing
1) When either one of the indoor units controls
the outdoor fan OFF zone of heating high-temperature release/current release, stop the outdoor fan.
2) When either one of the indoor units controls
the Comp. OFF zone of heating high-temperature release/current release, follow the outdoor
fan signal from the other indoor unit.
3) If either one of the indoor units controls one of
heating high-temperature release/current release/defrost while the other unit performs the
defrost reset sequence, the priority is given to
the former unit.
– 33 –
Page 33
9. TROUBLESHOO TING CHART
TROUBLESHOOTING PROCEDURES :
• Following details of “What to be pre-checked first”, make sure of the basic items.
• When there is no trouble corresponding to above, check in detail the faulty parts following “How to judge
faulty parts by symptoms” later.
9-1. What to be Prechecked First
9-1-1. Power Supply Voltage
(Indoor and Outdoor)
The line voltage must be A C 220/230/240V. If the line
voltage is not within this range, this air conditioner
may not work normally.
9-1-2. Incorrect Cable Connection between
Indoor and Outdoor Units
The indoor unit is connected to the outdoor unit with 5
cables. Mak e certain that the indoor and outdoor units
have been connected properly, with terminals assigned
the same numbers wired to each other . If the connectors are not connected as specified, the outdoor unit
will not operate normally, or OPERATION lamp and
TIMER lamp will blink (5 Hz).
– 34 –
Page 34
9-1-3. Misleading but Good Operations
(Program Controlled Operation)
The microcomputer performs the operations listed in
Table 9-1-1 to control the air conditioner. If a claim is
made on the operation, check whether it corresponds
Table 9-1-1
to the contents in the Table 9-1-1. If it does, it is an
indispensable operation for the control and maintenance of the air conditioner: it is not a failure of the
unit.
No.
1
2
3
4
5
6
Operation of air conditioner
When the power plug or the power cord
of the indoor unit is inserted, the
OPERATION lamp on the setting
indication part blinks.
Fan speed remains unchanged in the dry
mode.
Room temperature is in the range under
which the compressor is turned off, but
the compressor will not stop.
The compressor will not switch on or off
even when the thermo. control is
operated in the dry operation.
The PRE-DEF. lamp comes on when the
heating operation is started.
The outdoor fan stops once in the while
during the heating operation.
Description
The OPERATION lamp blinks, indicating that power is turned on.
If this happens, push the START/STOP button once to cause the
lamp to stop blinking. A power outage also causes the lamp to
blink.
Fan speed is automatically controlled in the dry mode.
The compressor will not stop while the compressor on hold timer
(3-minutes timer) is actuated.
In the dry mode, the compressor goes on and off at regular
intervals, independent of the thermo. control.
The PRE-DEF. lamp comes on during defrost operation and when
the indoor heat exchanger temperature is low when the heating
operation is started. At this time, the indoor fan is stopped to
prevent cold air from drifting into the room.
• When the indoor heat exchanger temperature is high, the
outdoor fan may be stopped b y the high-temperature limit control
operation.
• When the compressor current is large, the outdoor fan ma y be
stopped by the current limit control operation.
7
Compressor does not work though room
temperature is in the range of turning the
compressor on.
8
During automatic operation, the operation
mode changes.
9
During automatic operation mode, the
fan only operation continues .
10
When the power is turned on, the
operation starts automatically.
Compressor does not work while the compressor restart delay
(3-min.) timer is active. The same is true after power is turned
on, as the time is still active.
After selection of the cooling and heating operation, the operation
mode is selected again when the compressor off mode continues
for 15 min. according to the room temperature.
When the room temperature is within setting temperature ± 1°C
the fan only mode is selected.
When the auto restart controlling is selected, the operation is
performed automatically in the previous operation mode after the
power supply has been turned on.
– 35 –
Page 35
9-2. Primary Judgement of Trouble
Sources
9-2-1. Role of Indoor Unit Controller
The indoor unit controller receives the operation commands from the remote control and assumes the following functions.
• Measurement of the draft air temperature of the
indoor heat exchanger b y using the thermo. sen sor (TA).
• Measurement of the indoor heat exchanger temperature by using the thermo. sensor (TC).
• Louver motor control
• Control of the indoor fan motor operation
• Control of the LED display
• Control of the outdoor unit compressor, 4-wa y v alve
and the outdoor fan motor.
Table 9-2-1
9-2-2. Role of Outdoor Unit Controller
RAS-M18SAH-E, RAS-3M31SAH-E-1
(Lower Unit)
RAS-4M36SAH-E
• Measurement of the outdoor heat e xchanger temperature by using the thermo. sensor (TE).
• Control of the outdoor unit compressor, 4-w ay v alve
and the outdoor fan motor.
9-2-3. Display of Abnormalities and
Judgement of the Abnormal Spots
The indoor unit of this machine observes the operation condition of the air conditioner and displays the
contents of the self-diagnosis as block displays on
the display panel of the indoor unit.
Block display
OPERATION display blinking (1 Hz)
A
OPERATION display blinking (5 Hz)
B
OPERATION display blinking (5 Hz)
C
OPERATION display blinking (5 Hz)
D
OPERATION display blinking (5 Hz)
E
OPERATION and TIMER displa y blinking
F
(5 Hz)
OPERATION, TIMER and PRE-DEF. display
H
blinking (5 Hz)
(1) Judgement from defective operation or abnormal operation
Table 9-2-2
Symptom
No reaction on
remote control
operation
Turn off the power once, turn it on
again and try to operate the remote
control again.
Check
Power failure (when power is ON)
Thermo. sensor (TA) short/break
Heat exchanger sensor (TC) short/break
Indoor fan lock, abnormality of indoor fa n
Indoor P.C . board failure
Wrong wiring of connecting cable
Heat exchanger sensor (TE) short/ break
Compressor trouble
Remote control is
not possible.
Remote control is
possible.
Block display
Primary judgement
The indoor part (including the
remote control) is defective.
OK.
The outdoor fan
does not rotate
The compressor operates.
The compressor does not operate.
– 36 –
The outdoor part is defective.
(outdoor fan motor)
The indoor and outdoor part
is defective .
Page 36
(2) Self-diagnosis with remote control
(
)
With the indoor unit control, self-diagnosis of protective circuit action can be done by turning the
remote control operation into service mode, operating the remote control, observing the remote
control indicators and checking whether TIMER
lamp blinks (5 Hz).
2) Selecting ordinary mode
Push the all clear button (ACL) on the rear bottom of the wireless remote control with a tip of
pencil for more than 3 seconds. Make sure the
operation mode display, wind volume display,
clock display and setting temperature display
are turned on and “ : ” of the clock display is
blinking.
Note :
• To perform this self-diagnosis, the remote
control with the service code of 43069666
is required.
<How to select remote control operation mode>
1) Selecting service mode
Push the switch button provided on rear bottom of the wireless remote control with a tip of
pencil for more than 3 seconds. Make sure the
setting temperature is displayed on the
“ ”
display and other display is turned off.
<Cautions when doing service>
1) After completion of servicing, always push the
all clear (ACL) button to return the operation
mode to the normal mode.
2) After completion of servicing by the check
code, turn off the power once and then turn on
the power to reset memorized contents of the
microcomputer to the initial status.
All clear button
Switch for selecting
service mode
ACL CLOCK
Rear bottom of remote control
Fig. 9-2-1
– 37 –
ACL
CLOCK
Rear bottom cover
Page 37
<Self-diagnosis by check codes>
1) The self-diagnosis by the check codes is conducted under the block displays of item B-H in
Table 9-2-1.
2) Remote control key operation under the service mode is conducted by ON/OFF or TEMP.
The remote control display by each key operation is varied as shown below . Two digit number is displayed in a hexadecimal number.
3) The self-diagnosis by the check codes is conducted with procedures shown below.
a) Enter the service mode and make sure the
off timer display of the remote control shows
.
“ ”
b) Operate the “ON/OFF” key and make sure
the timer lamp on the display section is
blinking (5 Hz).
Table 9-2-3
c) At the same time, also make sure the op-
eration lamp is also blinking. This shows
that the protection circuit on the indoor P.C .
board is working.
d) Operate the TEMP. key and mak e sure
the remote control display shows and
blinking of the operation lamp. If the operation lamp is blinking, it shows the protection circuits for connecting cable is w orking or thermal fuse is blown.
e) In the same way, operate the TEMP.
key so that the display is increased one
by one to continue checks by the self-diagnosis as shown in the next table. From
“ ”
up to check operations of
protection circuits for each block, and
“ ”
to check operations of the
typical protection circuits.
“ ”
“ ”
“ ”
Operating key
ON/OFF
TEMP. (Up)
TEMP. (Down)
“AUTO” LOUVER
“SET” LOUVER
Indication after operation
“
1 is added to data before operation.
(Example)
1 is subtracted from data before operation.
(Example)
10 is subtracted from data before operation.
(Example)
Data before operation is directly transferred.
(Example)
”
“
“
“
“
”
“
”
“
”
“
”
“
”
”
”
”
– 38 –
Page 38
Table 9-2-4
Diagnosis functionBlock level
Check
code
Block
Indoor P.C.
board
Check
code
Symptom
Thermo. sensor
(TA) short/break.
Indoor heat
exchanger sensor
(TC) short/break.
Indoor fan lock,
abnormality of
indoor fan.
Abnormality of
other indoor unit
P.C. board.
Air
conditioner
status
Continued
operation
Continued
operation
All off
All off
Condition
Indicated when
detected abnormal
Indicated when
detected abnormal
Indicated when
detected abnormal
Indicated when
detected abnormal
Judgment and action
1. Check thermo. sensor.
2. If it is OK, check P.C. board.
1. Check heat exchanger
sensor.
2. If it is OK, check P.C. board.
1. Disconnect the power plug
from AC outlet, and pull out
the connector (CN10) for the
motor, then connect the plug
of AC power cord again and
turn the power on.
2. Check the voltage between
pin 1 and 2 of the connector
(CN10).
3. If the output voltage is 35V,
P.C. board is OK, check
motor.
Replace P.C. board.
Cable
connection
Refrigerant
system
Contents detected by the check codes to are stored in memory of the microcomputer even if the power
supply is turned off. Therefore, contents of operations in the past are all displayed.
1) Wrong wir ing or
disconnection of
connective cable.
2) Outdoor heat
exchanger
sensor (TE)
short/break.
Compressor break
down.
“ ”
“ ”
All off
All off
Indicated when
detected abnormal
Indicated when
detected abnormal
1. Check connective cable
correct if wiring is wrong.
2. If connective cable is OK,
check outdoor heat exchanger sensor.
1. Check compressor.
2. If it is OK, check P.C. board.
– 39 –
Page 39
9-3. Troubleshooting Flowcharts
9-3-1. Power can not be Turned on (No Operation at All)
<Preliminary checks>
(1) Is the supply voltage normal?
(2) Is the connection to the AC output OK?
Shut off the power supply
from AC outlet once and
turn it on after 5 seconds.
NO
Does the OPERATION
lamp blink?
YES
Operation
Check Items
Main cause
Countermeasure
Symptom
Does the fuse
Does the thermal
(Under PF. Terminal)
Is the indication voltage
NO
(DC12V or 5V) of main
P.C. board correct?
Is the voltage
across C02 measured
DC310V~340V?
YES
Does the power turn
on by pushing the
[START/STOP] button
of the remote control?
YES
(F01) blow?
NO
fuse blow?
NO
YES
Refer to the paragraph
NO
"Pre-check", or defective circuit
before power P.C. board block.
YES
YES
(No problem)
Parts (R21, R109, SG01,
C15, C01, DB01, C02,
IC01, T01) are defective.
Wrong wiring of
AC cord or connecting
cable is defective.
Does the transmission
indicator of remote
control blink normally and
transmit certainly?
YES
P.C. board
is defective.
NONO
Remote control
is defective.
Replace the
remote control.
Replace the
thermal fuse set.
Check connection.
Replace the main
P.C. board.
Is the secondary
voltage of SW trans-
former (T01) measured
DC35V, DC12V,
and DC7V ?
YES
Be sure to disconnect the motor connector CN10 after shut off the power supply, or it will be a cause of
*
Shut off the power
supply once, and turn
NO
it on again after disconnecting the motor
connector CN10
Is the secondary
voltage of SW
transformer measured
.
*
DC35V, DC12V,
and DC7V?
YES
NO
SW transformer
(T01) or IC (IC01)
for power supply
is defective.
Replace the main
P.C. board.
Motor is defective.
damage of the motor .
– 40 –
Page 40
9-3-2. Power can not be Turned on after Replacing Indoor P.C. Board
<Checking Procedure>
Connect the AC plug.
Does the OPERATION
lamp blink?
YES
Black
1 2 3 4
Indoor
terminal
block
NO
White
Blue
N L
Power
terminal
block
9-3-3. Outdoor Unit does not Operate
RAS-13SKH-E
/
RAS-3M31SAH-E-1 (Upper Unit)
Is it wired as shown
in Figure below?
YES
Brown
C02
RY01
P.C. board
NO
RY02
Return the wiring of the
power relay is returned to
the normal procedure.
To the paragraph of
“No Power turns on”.
T02
Shut off the power supply
from AC outlet once and
turn it on after 5 seconds.
Does the OPERATION lamp blink?
YES
Does the power turn on by
pushing the [START/STOP] button
of the remote control?
YES
Is AC220/230/240V
supplied between terminal block
1 - 2 , 3 - 2
Is cable connection
between indoor and outdoor
units correct?
Check items as following procedure
in 9-3-4, 9-3-5, 9-3-6.
1, 4 - 2 ?
*
YES
YES
1 Only Heating mode
*
NO
NO
NO
NO
See "Power can not be turned on".
See "Power can not be turned on".
Relays (RY01, RY02, RY03, RY04)
or IC31 or IC30 is failure.
Correct cabling between
indoor and outdoor units.
Replace the
P.C. board.
– 41 –
Page 41
RAS-10SKH-E-1
RAS-10SKH-E-1
RAS-10SKH-E-1
Shut off the power supply
from AC outlet once and
turn it on after 5 seconds.
x 2 /
RAS-M18SAH-E
x 2 /
RAS-3M31SAH-E-1 (Lower Unit)
x 4 /
RAS-4M36SAH-E
Does the OPERATION lamp blink?
YES
Does the power turn on by
pushing the [START/STOP] button
of the remote control?
YES
Is AC220/230/240V
supplied between terminal block
1 - 2 , 3 - 2
Is cable connection
between indoor and outdoor
units correct?
Is outdoor heat exchanger
sensor (TE) normal?
MCC-738 MAIN P.C. board
CN09-RY01 3 , and/or,
CN010-RY02 3
220/230/240 VAC?
1, 4 - 2 ?
*
YES
YES
YES
YES
1 Only Heating mode
*
NO
NO
NO
NO
NO
NO
See "Power can not be turned on".
See "Power can not be turned on".
Relays (RY01, RY02, RY03, RY04)
or IC31 or IC30 is failure.
Correct cabling between
indoor and outdoor units.
Replace sensor
MCC-738 is defective.
Replace the
P.C. board.
Check items as following procedure
in 9-3-4, 9-3-5, 9-3-6.
– 42 –
Page 42
9-3-4. Only Compressor does not Operate
Shut off the power supply
from AC outlet once and
turn it on after 5 seconds.
Does the OPERATION lamp blink?
YES
Does the power turn on by
pushing the [START/STOP] button
of the remote control?
YES
Is the voltage across the indoor terminal
( 1 - 2 ) 220/230/240 VAC?
YES
Is cable connection between indoor
and outdoor units correct?
YES
Is the voltage across the outdoor terminal
( 1 - 2 ) 220/230/240 VAC?
YES
Is the voltage across the outdoor terminal
( L - N ) 220/230/240 VAC?
YES
MCC-738 MAIN P.C. board
(CN09-RY01 3 , and/or CN10-RY02 3 )
220/230/240 VAC?
YES
Are all the cords for compressor normal?
YES
Is the compressor motor winding normal?
(Check the winding resistor.)
YES
Is the capacitor for compressor normal?
YES
Is the overload relay normal?
YES
Does the compressor start?
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
See "Power can not be turned on".
See "Power can not be turned on".
Relays (RY01, RY02)
or IC31 or IC30 is failure.
Correct cabling between indoor
and outdoor units.
Cables between indoor and
outdoor units are defective.
Check the power supply,
and correct cabling.
MCC-738 is defective.
Re-wire or replace the defective cords.
Compressor is defective.
Capacitor is defective.
Overload relay is defective.
Compressor is defective.
Replace the
P.C. board.
Compressor starts but
it stops after a while?
YES
Is the gas quantity normal?
(Check the pressure)
YES
Compressor is defective
NO
Gas shortage (Gas leakage)
– 43 –
Page 43
9-3-5. Only Outdoor Fan does not Operate
Shut off the power supply
from AC outlet once and
turn it on after 5 seconds.
Does the OPERATION lamp blink?
YES
Does the power turn on by
pushing the [START/STOP] button
of the remote control?
YES
Is the voltage across the indoor terminal
( 1 - 2 ) 220/230/240 VAC?
YES
Is cable connection between indoor
and outdoor units correct?
YES
Is the voltage across the outdoor terminal
( 1 - 2 ) 220/230/240 VAC?
YES
Is the voltage across the outdoor terminal
( L - N ) 220/230/240 VAC?
YES
NO
NO
NO
NO
NO
NO
See "Power can not be turned on".
See "Power can not be turned on".
Relays (RY01, RY02)
or IC31 or IC30 is failure.
Correct cabling between indoor
and outdoor units.
Cables between indoor and
outdoor units are defective.
Check the power supply,
and correct cabling.
Replace the
P.C. board.
MAIN P.C. board (CN08 1 - 2 )
220/230/240 VAC?
YES
Are all the cords for outdoor
fan motor normal?
YES
Is the outdoor fan motor winding normal?
(Check the winding resistance)
YES
Is the capacitor for outdoor
fan motor normal?
YES
Outdoor fan motor is defective.
NO
NO
NO
NO
MCC-738 is defective.
Correct the wire or
replace the defective cords.
Outdoor fan motor is defective.
Capacitor for outdoor
fan motor is defective.
– 44 –
Page 44
9-3-6. Only 4-Way Valve does not Operate (During Heating Operation)
Shut off the power supply
from AC outlet once and
turn it on after 5 seconds.
Does the OPERATION lamp blink?
YES
Does the power turn on by
pushing the [START/STOP] button
of the remote control?
YES
Is the voltage across the indoor terminal
( 2 - 3 ) 220/230/240 VAC?
YES
Is cable connection between indoor
and outdoor units correct?
YES
Is the voltage across the outdoor terminal
( 2 - 3 ) 220/230/240 VAC?
YES
Is the wiring of solenoid coil
for 4-way valve normal?
YES
NO
NO
NO
NO
NO
NO
See "Power can not be turned on".
See "Power can not be turned on".
Relays (RY02, RY04)
or IC31 or IC30 is failure.
Correct cabling between indoor
and outdoor units.
Cables between indoor and
outdoor units are defective.
Solenoid coil is defective.
Replace the
P.C. board.
4-way valve is defective.
– 45 –
Page 45
9-3-7. Only the Indoor Fan does not Operate
< Preliminary checks >
Does it neither work in COOL or FAN ONLY operation?
< Check procedure >
Shut off the power
supply once.
Turn the power supply.
Does the fan
stop in no operating
status?
YES
Start the operation
with low fan setting
in cool operation.
Does the fan rotate?
YES
Change the setting of
cooling to high fan.
Does the fan speed
become higher?
YES
NO
Control P.C. board is defective.
Is the voltage
NO
NO
measured DC35V
between
and
Shut off the power supply.
Turn on the power supply.
Operation
stops
(DC+5V-0V) output between
(blue lead wire) and
lead wire) of the motor connector
(CN10) when rotating the cross
flow fan by hand in no operating
status ? (2 pulses/one turn)
1 (red lead wire, +)
2 (black lead wire, –)
of the motor connector
(CN10) ?
YES
Does the cross
flow fan rotate
normally?
YES
Is the rotation signal
YES
NO
2 (black
NO
Repair the
bearing of the
cross flow.
4
NO
Replace the P.C. board.
Shut off the power supply,
and turn it on after
disconnecting the motor
connector (CN10)
the P.C. board.
Is the voltage of
DC35V measured
between 1 (red lead wire, +)
and 2 (black lead wire, –) of
the motor connector
(CN10) ?
YES
*
from
NO
Replace the
P.C. board.
Normal
Be sure to disconnect the motor connector CN10 after shut off the power supply, or it will be a cause of
*
Replace the control
P.C. board.
Replace the
fan motor.
damage of the motor .
– 46 –
Page 46
9-4. How to Check the Remote Control (Including the Indoor P.C. Board)
There is no beep from
the indoor unit.
Push the START/STOP button.
The operation lamp of
the air conditioner main
unit does not light.
Is there direct
sunlight on the
receptor of the
air conditioner?
YES
NO
Is there any
thyristor
fluorescent light
near by?
YES
NO
Does the transmission
YES
NO
Is operation
possible when setting
the temporary switch of the
air conditioner main unit to
"TEST RUN" or
"TEMPORARY AUTO"?
NO
possible when the
transmitter is moved
nearer to the infrared
signal receiver of the
indicator blink?
Is operation
air conditioner?
YES
Battery life
NO
Short-circuit the metal
terminal at the side of the
battery compartment
(all-clear terminal) with a pencil.
(wait about 10 seconds)
Push the START/
STOP button
Does the
transmission
indicator light?
YES
NO
Avoid direct
sunlight.
Keep the air
conditioner away
from thyristor
fluorescent light.
YES
Can any signal tone
be heard in a transistor
radio when transmitting
within 5cm distance
from the radio?
YES
P.C. board is failure.
Replace
P.C. board.
After battery replacement,
Note:
shortcircuit the metal terminal at
the side of the battery compartment
(all-clear terminal) with a pencil.
– 47 –
NO
Replace the
batteries
NO
Normal
Is there any
beep and
operation?
YES
Remote control
is failure.
Replace remote
control.
Page 47
9-4-1. How to Check the P.C. Board
(1) Operating precautions
1) When removing the front panel or the P.C.
board, be sure to shut off the power supply.
2) When removing the P.C. board, hold the edge
of the P.C. board and do not apply force to the
parts.
3) When connecting or disconnecting the connectors on the P.C. board, hold the whole housing.
Do not pull at the lead wire.
(2) Inspection procedures
1) When a P.C. board is judged to be defective,
check for disconnection, burning, or discoloration of the copper foil pattern or this P.C. board.
2) The P.C. board consists of the f ollo wing 2 parts
a. Main P.C. board part:
Power relay, indoor fan motor drive circuit
and control circuit, C.P.U and peripheral circuits, buzzer drive circuit and buzzer.
b. Infrared rays receive and indication
parts:
Infrared rays receive unit and LED.
Table 9-4-1 Approximate value of the sensor (thermistor) resistance (TA, TC, TE)
Temperature
Sensor
Thermo. sensor
0°C
35,8
9-4-2. How to Reduce the Operation Time of
the Anti-Restart Timer
• Attach the diode (1S1555 or equivalent) to the rivet
inside the unit through holes on the rear of the
wireless remote control unit.
• Push the START/STOP button to start operation
with the diode attached.
10°C
20,7
20°C
12,6
Wireless remote control
25°C
10,0
(= kΩ)
30°C
7,92
Timer short diode
– 48 –
Fig. 9-4-1
Page 48
(3) Checking pr ocedure
Table 9-4-2
No.
1
Shut off the power supply and
remove the P.C. board assembly
from the electronic parts base.
Remove the connecting cable from
the terminal block.
2
Remove the connector for the
motor, and turn the power on.
If the OPERATION lamp blinks (0.5
sec. :ON, 0.5 sec. :OFF) when the
power turning on, the checking
points described as 1-5 of right
column are not necessary to
perform.
3
Make the operation status by
pushing once the START/STOP
button, except the status of [FAN
ONLY], [ON TIMER].
4
Start the operation with the system
which the time of the restart delay
timer is shortened.
5
Make the operation status by pressing
once the START/STOP button.
1.The time of the restart delay timer
is shortened.
2.Cool operation
3.Air volume [AUTO]
4. Make the setting temperature lower
enough than room temperature.
5.Continuous operation.
6
The status of No. 5 is continued, and
make the following condition.
1.Heat operation
2.Make the setting temperature
higher enough than room
temperature.
7
Turn the power on after connecting
the motor connector.
Start the operation with the following
condition.
1.Operation [Cooling]
2.Airflow [High fan]
3.Continuous operation
Procedure
Check point (Symptom)
1.Is the fuse blown?
Voltage check
1.Between TP1 and TP2
(220/230/240V AC)
2.Between TP2 and pin 1 of CN04
(220/230/240V AC)
3.Between TP2 and pin 3 of CN04
(220/230/240V AC)
4.Between + and - of C02
(310 ~ 340V DC)
5.Between 35V and GND
6.Between 12V and GND
7.Between 5 V and GND
Voltage check
1. Voltage of relay coil. (DC 12V)
Between pin 10 of IC31 and GND
Between pin 11 of IC31 and GND
2. Between No. 1 and 2 of connecting
cable terminal block.
(220/230/240V AC)
1.All indicators light for 3 sec.
2. Indicators do not indicate normally
after approximate 3 sec.
1.Compressor does not operate.
2. OPERATION lamp blinks .
1.Compressor does not operate.
2. OPERATION lamp blinks .
1.The voltage of DC 35V is not
measured between the red and
black of the motor terminals.
2. Motor does not rotate.
(The key operation is accepted.)
3. The motor rotates, but it vibrates too
much.
Causes
1.* Application of shock voltage.
* Overload by short-circuit of the
parts.
1.* AC power cord is defective.
* Poor contact of the terminal plate.
* Miss wiring of the power relay.
2.Fuse is defective.
3.Operation of the thermal fuse.
4.* Capacitor (C01, C15) is defective.
* Line filter (L01) is defective.
* Resistor (R01) is defective.
* Diode (DB01) is defective.
5.IC01, IC02, T01 are defective.
6.IC01, IC02, T01, F03 are defective.
7.IC01, IC02, T01, F02, Q29, IC03
are defective.
1.Breaking wire of the relay coil,
defective relay driver. (IC31)
2.Poor contact of relay.
Defective indicator, or poor
housing assembly. (CN13)
1.The temperature of the indoor heat
exchanger is abnomally lower.
2.Poor contact of the heat exchanger
sensor. (The connector is
disconnected.) (CN01)
3.Heat exchanger sensor, main P.C.
board are defective.
(Refer to Table 9-4-1 for the judgment
of defective resistance values.)
4.Main P.C. board is defective.
1.The temperature of the heat
exchanger is abnormally high.
2.The heat exchanger sensor
connector has short-circuit. (CN01)
3.The heat exchanger sensor is
defective.
(Refer to Table 9-4-1 for the judgment
of defective resistance v alues .)
4.P.C. board is defective.
1.Indoor fan motor is defective.
(Protecting operation on the P.C.
board.)
2. Poor contact of the motor
connector.
3.P.C. board is defective.
– 49 –
Page 49
9-4-3. P.C. Board Layout (Indoor Unit)
T op View
Bottom View
– 50 –
Page 50
9-4-4. P.C. Board Layout (Outdoor Unit)
T op View
Bottom View
– 51 –
Page 51
10-1. Indoor Unit
RAS-13SKH-E, RAS-10SKH-E-1
10. PART REPLACEMENT
No.
•
Part name
Front panel
Procedure
1) After stopping the operation of the air conditioner, be
sure to turn off the circuit breaker or disconnect the
power plug from the AC wall socket.
2) Open the screw caps and remove the two screws
fixing the front panel.
3) Close the screw caps as they were.
4) Open the horizontal louver right below by your finger.
5) Open the lower side of front panel until it touches the
horizontal louver, and remove it from the indoor unit
by turning it.
<To assemble the front panel>
1) Fix the two screws to secure the front panel.
2) Close the screw caps as they were.
3) Press four places where are the center, right end, left
end and lower portions of the air outlet.
4) Check the gap between the front panel and the main
unit.
If cooling or drying operation is performed without
pressing the center of the air outlet, the surface of
the front panel may be covered with frost and have a
waterdrop.
Remarks
Electrical part
‚
assembly
Drain-pan
ƒ
assembly
1) Perform the process • above.
2) Remove the screw securing the shield metal plate.
3) Remove the electrical part cover by pressing the nail
located on upper portion of the electrical part cover.
4) Remove the drain guide.
5) Remove the screw securing to the end plate of the
heat exchanger.
6) Remove the connector (5p) for the fan motor and the
connector (6p) for the louver motor from the microcomputer assembly.
7) After unhooking the electrical part base by pressing
the fixing nail located on its lower portion, draw the
electrical part base out toward you to remove it from
the main unit.
8) Pull the TC sensor out from the holder of the heat
exchanger.
9) Dress the connecting cable securely as shown in the
right illustration.
(Improper dressing will cause water leakage.)
1) Perform the process ‚ above.
2) Remove the drain-pan by pressing the four hooks
downwards.
(Keep it with the drain hose.)
– 52 –
Page 52
Part name
Procedure
RemarksNo.
Horizontal grille
„
Note:
The horizontal
grille can not be
removed without
removing the
louver motor.
Heat exchanger
…
Cross flow fan
†
1) Perform the process ‚.
2) Remove the screw fixing the louver motor, and
remove the louver motor.
3) Remove the shaft of the horizontal grille from the
drain-pan.
1) Perform the process ƒ.
2) Remove the pipe holder from the rear side of main
unit by removing the screw.
3) Unhook the hooks fixing the left side of the heat
exchanger and remove the screw fixing it, then
remove the right side of the end plate from the rib
fixing the main unit by sliding the heat exchanger
slightly to the right side.
1) Perform the process ƒ.
2) Loosen the set screw of the cross flow fan.
3) Remove the screw fixing the shaft bearing base.
4) Lift slightly up the left side of the heat exchanger,
and pull the shaft bearing base out left downwards.
Shaft bearing
‡
Fan motor
ˆ
When assembling it, fix it with the set screw on the
position where the gap between the rear plate surface
and the left end surface of the cross flow fan is 6 ~
7mm.
1) Perform the process † above.
2) Remove the shaft bearing from the shaft bearing base.
<Caution for assembling>
• If a part of the shaft bearing is protruded from the
housing, assemble it after pushing its portion into the
correct position in the housing.
1) Perform the process … above.
2) Perform the process †-2) above.
3) Remove the left and right motor bands.
4) Remove the fan motor after pulling the cross flow fan
out sliding it left and right.
– 53 –
Page 53
10-2. Microcomputer
RAS-13SKH-E, RAS-10SKH-E-1
No.
•
‚
Part name
Common
procedure
Thermal fuse
replacement
Procedure
1) Turn the power supply off to stop the operation of airconditioner, and disconnect the power cord from the
AC supply.
2) Remove the front panel.
• Remove the two fixing screws. (φ4 x 14 )
3) Remove the electrical part base.
1) Perform the process • above.
2) Remove terminal cover (Up), (Down).
3) Disconnect the terminal blocks connected with the
connecting cable, and the power cord from base Eparts by removing the screws.
4) Remove the thermal fuse (77°C) from base E-parts.
Remarks
Replace the thermal fuse, terminal
block, power cord, microcomputer
ass’y and the power supply P.C.
board ass’y.
– 54 –
Page 54
Side cabinet
Back cabinet
10-3. Outdoor Unit
RAS-M18SAH-E
•
‚
Part name
Common
procedure
Back cabinet
Side cabinet
Procedure
1) After stopping the operation of the air conditioner, be
sure to turn off main power supply switch and
breaker of outdoor unit and indoor unit.
2) Remove the electric parts cover. (4 screws)
3) Remove the cord clamps (6 screws).
4) Remove the connecting cables and the power cord
after loosening 7 screws of terminal block.
5) Remove the front cabinet. (8 screws)
• Pull the front lower portion toward you, and remove
it pulling out upward.
1) Remove the back cabinet and side cabinet.
(12 screws)
RemarksNo.
P.C. board
ƒ
assembly
(For outdoor unit)
1) Remove the connector. (16 portions)
2) Remove the P.C. board supports (4 portions), and
take out the P.C. board assembly.
Connector
P.C.board
support
– 55 –
Page 55
No.
Part name
RemarksProcedure
Capacitor for
„
compressor
Capacitor for fan
…
motor
Transformer for
†
outdoor unit
Overload relay
‡
1) Remove the capacitor band. (Each 1 screw)
2) Disconnect the lead wire from the capacitor terminal.
1) Remove the electrical parts cover. (1 screw)
2) Remove the capacitor band. (2 screws)
3) Disconnect the lead wire from the capacitor terminal.
1) Remove the electrical parts cover. (1 screw)
2) Remove the transformer. (2 screws)
3) Disconnect the connector from the P.C. board
assembly.
1) Perform the process ‚ above.
2) Remove the terminal cover of compressor.
3) Remove OL holder and pull overload relay up.
4) Disconnect the lead wire from the overload relay
terminal.
Connector
P.C.board
support
Terminal
cover
OL holder
Parts position
Fan
motor
Compressor
(For unit B)
Compressor
(For unit A)
– 56 –
Page 56
× 2 Screws
× 3 Screws
RAS-3M31SAH-E-1
No.
•
Part name
Front panel
Procedure
1) After stopping the operation of the air conditioner, be
sure to turn off main power supply switch and
breaker of outdoor unit and indoor unit.
2) Remove the L-shape holder (Right). (8 screws)
3) Remove the L-shape holder (Left). (5 screws)
4) Remove the front cover.
5) Remove the rear cover. (4 screws)
6) Remove the electrical parts cover.
Upper unit: 2 screws
Lower unit: 4 screws
7) Remove the cord clamps.
Upper unit: 2 screws
Lower unit: 6 screws
8) Remove the front cabinet.
Upper unit: 4 screws
Lower unit: 3 screws
• Pull the front lower position toward you, and
remove it putting out upward.
Remarks
× 8 Screws
Front cover
× 5 Screws
Rear cover
× 4 Screws
‚
Upper unit
1) Perform the process • above.
2) Remove the base plate (Right). (2 screws)
3) Remove the base plate (Left). (3 screws)
4) Remove the upper unit pulling it toward you.
– 57 –
Page 57
× 7 Screws
No.
Part name
RemarksProcedure
Back cabinet
‚-1
Side cabinet
Capacitor for
‚-2
compressor
Capacitor for fan
‚-3
motor
1) Remove the back cabinet and side cabinet.
(7 screws)
1) Perform the process • above.
2) Remove the fixing screw securing the capacitor
band.
(1- ST2T ø4 x 8 )
3) Remove the cable connected to the terminal.
1) Perform the process • above.
2) Remove the fixing screw.
(1- ST2T ø4 x 8 )
3) Remove the cable connected to the terminal.
1-ST2T
φ4 x 10
1-ST2T
φ4 x 8
1-ST2T
φ4 x 8
‚-4
‚-5
Overload relay
Thermostat
bimetal
1) Perform the process • above.
2) Remove Fastons of leads.
3) Remove the fixing screw.
(1- ST2T ø4 x 10 )
4) Pull OL holder up and remove Overload relay from
OL holder.
1) Perform the process • above.
2) Remove terminal cover of compressor.
3) Remove thermo holder and pull thermostat bimetal
up.
4) Remove Fastons of leads.
OL holder
– 58 –
Page 58
× 2 Screws
× 3 Screws
× 6 Screws
No.
Part name
RemarksProcedure
ƒ
Lower unit
1) Perform the process •, ‚ above.
2) Remove the base plate (Right). (3 screws)
3) Remove the drain guide. (2 screws)
4) Remove the base plate (Left). (2 screws)
Back cabinet
ƒ-1
Side cabinet
P.C. board
ƒ-2
assembly
(For outdoor unit)
1) Remove the back cabinet and side cabinet.
(6 screws)
1) Remove the connector. (16 portions)
2) Remove the P.C. board supports (4 portions), and
take out the P.C. board assembly.
Connector
P.C.board
support
– 59 –
Page 59
No.
Part name
RemarksProcedure
Capacitor for
ƒ-3
compressor
Capacitor for fan
ƒ-4
motor
Transformer for
ƒ-5
outdoor unit
Overload relay
ƒ-6
1) Remove the capacitor band. (Each 1 screw)
2) Disconnect the lead wire from the capacitor terminal.
1) Remove the electrical parts cover. (1 screw)
2) Remove the capacitor band. (2 screws)
3) Disconnect the lead wire from the capacitor terminal.
1) Remove the electrical parts cover. (1 screw)
2) Remove the transformer. (2 screws)
3) Disconnect the connector from the P.C. board
assembly.
1) Perform the process ƒ-1 above.
2) Remove the terminal cover of compressor.
3) Remove OL holder and pull overload relay up.
4) Disconnect the lead wire from the overload relay
terminal.
Connector
P.C.board
support
Terminal
cover
OL holder
Parts position
Fan
motor
Compressor
(For unit B)
Compressor
(For unit A)
– 60 –
Page 60
x 2 Screws
× 3 Screws
RAS-4M36SAH-E
•
Part name
Front panel
Procedure
1) After stopping the operation of the air conditioner, be
sure to turn off main power supply switch and
breaker of outdoor unit and indoor unit.
2) Remove the L-shape holder (Right). (8 screws)
3) Remove the L-shape holder (Left). (5 screws)
4) Remove the front cover.
5) Remove the rear cover. (4 screws)
6) Remove the electrical parts cover.
Upper unit: 4 screws
Lower unit: 4 screws
7) Remove the cord clamps.
Upper unit: 6 screws
Lower unit: 6 screws
8) Remove the front cabinet.
Upper unit: 4 screws
Lower unit: 3 screws
• Pull the front lower position toward you, and
remove it pulling out upward.
RemarksNo.
× 8 Screws
Front cover
× 5 Screws
‚
Upper unit
1) Perform the process • above.
2) Remove the base plate (Right). (2 screws)
3) Remove the base plate (Left). (3 screws)
4) Remove the upper unit pulling it toward you.
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Page 61
No.
Part name
RemarksProcedure
Back cabinet
‚-1
Side cabinet
P.C. board
‚-2
assembly
(For outdoor unit)
Capacitor for
‚-3
compressor
1) Remove the back cabinet and side cabinet.
(6 screws)
× 6 Screws
1) Remove the connector. (16 portions)
2) Remove the P.C. board supports (4 portions), and
take out the P.C. board assembly.
1) Remove the capacitor band. (Each 1 screw)
2) Disconnect the lead wire from the capacitor terminal.
Capacitor for fan
‚-4
motor
Transformer for
‚-5
outdoor unit
1) Remove the electrical parts cover. (1 screw)
2) Remove the capacitor band. (2 screws)
3) Disconnect the lead wire from the capacitor ter minal.
1) Remove the electrical parts cover. (1 screw)
2) Remove the transformer. (2 screws)
3) Disconnect the connector from the P.C. board
assembly.
Connector
P.C.board
support
– 62 –
Page 62
× 3 Screws
No.
Part name
RemarksProcedure
‚-6
Overload relay
1) Perform the process ‚-1 above.
2) Remove the terminal cover of compressor.
3) Remove OL holder and pull overload relay up.
4) Disconnect the lead wire from the overload relay
terminal.
Terminal
cover
OL holder
Parts position
Fan
motor
Compressor
(For unit D)
Compressor
(For unit C)
ƒ
Lower unit
1) Perform the process •, ‚ above.
2) Remove the base plate (Right). (3 screws)
3) Remove the drain guide. (2 screws)
4) Remove the base plate (Left). (2 screws)
x 2 Screws
The method of replacing parts of lower unit is the same as upper unit.
*
– 63 –
Page 63
11. CAUTIONS ON REPLACEMENT OF P.C. BOARD ASSEMBLY
1. Set the switch (SW03) provided on the P.C. board as follows.
ON
123456
1
2
OFF
3
4
5
6
OFF
<RAS-10SKH-E>
ON
2. Check the black lead wire is double wound around the current trans. (CT. T02)
Black
White
1 2 3 4
Indoor
terminal
block
Blue
Brown
N L
Power
terminal
block
ON
OFF
C02
RY01
P.C. board
123456
<RAS-13SKH-E>
RY02
T02
OFF
1
2
ON
3
4
5
OFF
6
ON
– 64 –
Page 64
12-1. Indoor Unit (1)
12. EXPLODED VIEWS AND PARTS LIST
410
406
401
402
405
409
403
404
407
408
Location Part
No. No.
401 43T60002 Base, T erminal
3P, AC 300V, 20A
402 43T69004 Sensor, Heat Exchanger
10kΩ, 25°C
403 43T69005 Sensor, Thermostat
10kΩ, 25°C
404 43T60004 Fuse, T emperature 77°C
405 43T69007 P.C. Board, WRS-LED
MCC-635
406 43T69006 P.C. Board A'ssy MCC-713
(RAS-13SKH-E)
Description
401
– 65 –
Location Part
No. No.
406 43T69008 P.C. Board A'ssy MCC-713
(RAS-10SKH-E)
407 43T61001 Base, E-Parts
ABS, Black, UL94-5V
408 43T62006 Base, Shield
SGCC-Z08-LUB
409 43T60001 Base, T erminal
2P, AC 300V, 20A
410 43T60005 Housing 4P
Description
Page 65
Indoor Unit (2)
Location Part
No. No.
411 43T69003 Relay, Power
DI1U, 20A, AC 250V
412 43T58002 Transformer, Switching
SWT-34
413 43T60003 Fuse 3,15A, AC 250V
414 43T32001 Resistor 5,6Ω, 5W
415 43T33001 Capacitor, Electrolytic
100MFD , 450V, A U F
Description
– 66 –
Location Part
No. No.
416 43T55004 Varistor 560V
417 43T34001 Filter, Line 0,6A
418 43T30001 IC, Switching MA 2830P-FJ
419 43T31001 Diode, Rectifier
RBV-406, 600V
420 43T58001 Transformer, Current
CT422920S-01
Description
Page 66
Indoor Unit (3)
201
202
206
203
204
207
210
214
211
216
217
215
234
222
221
208, 245
209
242
228
229
212
213
230
219
239
220
218
223
224
238
231
225
235
241
247
240
233
232
226
236
237
205
Location Part
No. No.
201 43T00002 Front Panel A'ssy
202 43T00003 Suction Grille
203 43T80001 Air Filter (L)
204 43T80002 Air Filter (R)
205 43T80003 Frame Filter
206 43T07004 Screw Cap (L)
207 43T07003 Screw Cap (R)
208 43T08010 Diode, LED (RAS-13SKH-E)
43T08001 Diode, LED (RAS-10SKH-E)
209 43T19004 Accepted Signal Filter
210 43T09003 Horizontal Louver A'ssy
for Service
211 43T09004 Louver A'ssy
212 43T70001 Drain Hose A'ssy
213 43T21003 Motor Stepping
214 43T07001 Bushing
215 43T44004 Refrigeration Cycle A'ssy
(RAS-13SKH-E)
43T44002 Refrigeration Cycle A'ssy
(RAS-10SKH-E)
216 43T47006 Pipe, Delivery
217 43T47016 Pipe, Suction (RAS-13SKH-E)
43T47005 Pipe, Suction (RAS-10SKH-E)
218 43T49010 Pipe, Shield (RAS-13SKH-E)
43T49007 Pipe, Shield (RAS-10SKH-E)
219 43T19003 Holder, Sensor
Description
Location Part
No. No.
220 43T49009 Spring (RAS-13SKH-E)
43T49003 Spring (RAS-10SKH-E)
221 43T49005 Plate of EVA-SEAL
222 43T49006 Holder for Plate of EVA-SEAL
223 43T49004 Rubber for Sound Insulation
(RAS-10SKH-E)
224 43T79002 Drain Guide
225 43T39002 Motor Band (L)
226 43T39001 Motor Band (R)
228 43T20007 Fan, Cross Flow
229 43T22002 Bearing
230 43T39003 Base, Bearing
231 43T03001 Rear Plate
232 43T07002 Pipe Holder
233 43T82001 Installation Plate
234 43T85007 Owner’s Manual (13SKH-E)
43T85001 Owner’s Manual (10SKH-E)
235 43T11001 Pipe Shield
236 43T69002 Remote Control
237 43T63002 Holder, Remote Control
238 43T62001 Cover, E-Parts
239 43T62002 Terminal Cover (Up)
240 43T62005 Terminal Cover (Down)
241 43T62003 Cord Clamp
242 43T62004 Shield Cover
247 43T21005 Fan Motor
Description
– 67 –
Page 67
12-2. Outdoor Unit
RAS-M18SAH-E
50
47
71
18
69,70
45
66
46
37
72
48
10
60
20
28
21
9
52, 63, 64
56
55,26
62
43
59
13
34
74
23
27
35
12
51
53
11
67
44
40
57
– 68 –
Page 68
RAS-3M31SAH-E-1
9
34
4
7
8
15
21
49
19
28
37
17
38
39
20
22, 24
32
26, 30, 31
11
50
18
25,41
43
29
54
23, 27, 42
35
45
37
5
3
20
60
61
47
71
66
46
10
48
14
69,70
10
6
36
16
68
33
34
28
21
9
43
59
65
13
23
27
35
52, 63, 64
55,26
51
12
53
67
56
11
44
2
40
57
1
58
62
– 69 –
Page 69
RAS-4M36SAH-E
45
9
34
4
7
8
18
21
50
47
71
66
28
46
3
43
60
29
23, 27
60
37
37
35
52,63,64
51,53
12
45
56
55,26
11
50
18
69,70
48
20
5
61
20
47
71
66
46
10
48
14
69,70
10
6
36
16
68
33
34
28
21
9
43
59
75
13
23
27
35
52, 63, 64
55,26
51
12
53
67
56
11
44
2
40
57
73
62
62
– 70 –
Page 70
Location Part
No. No.
Description
Location Part
No. No.
Description
1 43T00009 Cabinet, Right
2 43T00010 Plate, Retainer Right
3 43002130 Cabinet, Side, Left
4 43002132 Plate, Support, Left
5 43005292 Front Panel
6 43005293 Rear Panel
7 43079243 Guide, Drain
8 43079244 Box, Drain
9 43005144 Cabinet, Front
10 43T00005 Cabinet, Back
11 43T00004 Cabinet, Side
12 43T00006 Plate, Packed, Valve
13 43T42001 Base
14 43115663 Hanger, Plastic
15 43054398 Relay, Overload
16 43T50002 Thermostat, Bimetal
17 43060049 Terminal Block, 5P
18 43T55015 Capacitor, Plastic, Comp,
30MF, 400V
19 43T55009 Capacitor, Plastic-Film,
1,5MFD , 500V
20 43021984 Motor, Fan,
AC 220-240V, 50Hz
21 43T47001 Flange, Nut
22 43T46004 Packed Valve, 12,7
23 43T46002 Packed Valve, 6,35
24 43T47018 Bonnet, 12,7 DIA
25 43146482 4-Way Valve
26 43T46005 Valve, Chec k
27 43T47003 Bonnet, 6,35 DIA
28 43020302 Propeller-Fan,
MIX-Flow, 410 DIA
29 43042453 Base
30 43T47007 Capillary Tube, 1,2 DIA
31 43T47017 Capillary Tube, 0,6 DIA
32 43045085 Dryer
33 43T49008 Cushion, Rubber
34 43T19001 Guard Fan
35 43T19002 Stopper, Guard
36 43T63005 Holder, Thermostat, Bimetal
37 43T96001 Bushing
38 43043609 Condenser
39 43043610 Condenser, Sub
40 43T41400 Compressor, PH 120T1-4C,
750W, 2 P oles , 220-240V
41 43046255 Solenoid Coil
42 43047607 ASM, Packed Valve Cap
12,7, 6,35
43 43T63004 Lead-Wire-Clamp
44 43054403 Relay, Overload,
J-MRA99269-9200
45 43T58005 Transformer, Power,
FT70, AC 220-240V
46 43T60014 Terminal, Block 3P
47 43T60016 Terminal, Block 2P
48 43T60011 Terminal, Block 4P
49 43055496 Capacitor, Plastic-Film,
35 MFD, 400V
50 43T55007 Capacitor, Plastic-Film,
2 MFD, 450V
51 43T46001 Packed Valve , 9,52
52 43T46003 4-Way V alve, VH7100D
53 43T47002 Bonnet, 9,52 DIA
54 43T00011 Plate, Packed, Valve
55 43T47014 Capillary Tube, 1,7 DIA
56 43T45003 Dryer
57 43T49001 Rubber-Cushion
58 43T62007 Cover, E-Parts
59 43T79004 Nipple, Drain
60 43T43018 Condenser
62 43T62009 Cover, E-Parts
63 43T46007 Coil, Valve 4 Way, LB6
64 43T46008 Coil, Valve 4 Way, LB6
65 43T85035 Owner's Manual
66 43T69018 P.C. Board, Assy, MCC-738
67 43T63001 Holder, OL-Relay
68 43041764 Compressor, PH170T2-4L2
AC 220/240V, 1100W
69 43T69024 Sensor, Heat Exchanger
70 43T69025 Sensor, Heat Exchanger
71 43T19003 Holder, Sensor
72 43T19005 Handle
73 43T00028 Cabinet, Right
74 43T85037 Owner's Manual
75 43T85038 Owner's Manual
– 71 –
Page 71
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