FILE NO. SVM-15074
SERVICE MANUAL
AIR-CONDITIONER
SPLIT TYPE
RAS-3M26S3AV-E
RAS-3M26S3AV-A
RAS-3M26S3AV-TR
R410A
July, 2015
FILE NO. SVM-15074
CONTENTS
1. SAFETY PRECAUTIONS ............................................................ 3
2. SPECIFICATIONS ........................................................................ 5
3. REFRIGERANT R410A ............................................................. 21
4. CONSTRUCTION VIEWS .......................................................... 29
5. WIRING DIAGRAM .................................................................... 30
6. SPECIFICATIONS OF ELECTRICAL PARTS............................34
7. REFRIGERANT CYCLE DIAGRAM........................................... 35
8. CONTROL BLOCK DIAGRAM .................................................. 40
9. OPERATION DESCRIPTION ..................................................... 42
10. INSTALLATION PROCEDURE .................................................. 51
11. HOW TO DIAGNOSE THE TROUBLE ........................................ 60
12. HOW TO REPLACE THE MAIN PARTS .................................... 86
13. EXPLODED VIEWS AND PARTS LIST.................................... 101
-2-
FILE NO. SVM-15074
1. SAFETY PRECAUTIONS
The important contents concerned to the safety are described on the product itself and on this Service Manual.
Please read this Service Manual after understanding the described items thoroughly in the following contents
(Indications/Illustrated marks), and keep them.
[Explanation of indications]
Indication
Explanation
DANGER
Indicates contents assumed that an imminent danger causing a death or serious injury of
the repair engineers and the third parties when an incorrect work has been executed.
WARNING
Indicates possibilities assumed that a danger causing a death or serious injury of the
repair engineers, the third parties, and the users due to troubles of the product after work
when an incorrect work has been executed.
CAUTION
Indicates contents assumed that an injury or property damage (∗) may be caused on the
repair engineers, the third parties, and the users due to troubles of the product after work
when an incorrect work has been executed.
∗ Property damage : Enlarged damage concerned to property, furniture, and domestic animal/pet
[Explanation of illustrated marks]
Mark
Explanation
Indicates prohibited items (Forbidden items to do)
The sentences near an illustrated mark describe the concrete prohibited contents.
Indicates mandatory items (Compulsory items to do)
The sentences near an illustrated mark describe the concrete mandatory contents.
Indicates cautions (including danger/warning)
The sentences or illustration near or in an illustrated mark describe the concrete cautious contents.
For general public use
Power supply cord of outdoor unit shall be more than 2.5 mm² (H07RN-F or 60245IEC66) polychloroprene
sheathed flexible cord.
•
•
•
•
Read this “SAFETY PRECAUTIONS” carefully before servicing.
The precautions described below include the important items regarding safety. Observe them without fail.
After the servicing work, perform a trial operation to check for any problem.
Turn off the main power supply switch (or breaker) before the unit maintenance.
CAUTION
New Refrigerant Air Conditioner Installation
• THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT
DESTROY OZONE LAYER.
R410A refrigerant is apt to be affected by impurities such as water, oxidizing membrane, and oils because
the working pressure of R410A refrigerant is approx. 1.6 times of refrigerant R22. Accompanied with the
adoption of the new refrigerant, the refrigeration machine oil has also been changed. Therefore, during
installation work, be sure that water, dust, former refrigerant, or refrigeration machine oil does not enter into
the new type refrigerant R410A air conditioner circuit.
To prevent mixing of refrigerant or refrigerating machine oil, the sizes of connecting sections of charging port
on main unit and installation tools are different from those used for the conventional refrigerant units.
Accordingly, special tools are required for the new refrigerant (R410A) units. For connecting pipes, use new
and clean piping materials with high pressure fittings made for R410A only, so that water and/or dust does
not enter. Moreover, do not use the existing piping because there are some problems with pressure fittings
and possible impurities in existing piping.
-3-
FILE NO. SVM-15074
CAUTION
TO DISCONNECT THE APPLIANCE FROM THE MAIN POWER SUPPLY
A switch or circuit breaker that can disconnect all poles must be included in the fixed wiring.
Be sure to use an approved circuit breaker or switch.
DANGER
• The manufacturer shall not assume any liability for the damage caused by not observing the
description of this manual.
• Ask an authorized dealer or qualified installation professional to install/maintain the air conditioner.
INAPPROPRIATE SERVICING MAY RESULT IN WATER LEAKAGE, ELECTRIC SHOCK OR FIRE.
• TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK.
MAKE SURE ALL POWER SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.
DANGER: HIGH VOLTAGE
The high voltage circuit is incorporated. Be careful to do the check service, as the electric shock may be
caused in case of touching parts on the P.C. board by hand.
• CORRECTLY CONNECT THE CONNECTING CABLE. IF THE CONNECTING CABLE IS INCORRECTLY CONNECTED, ELECTRIC PARTS MAY BE DAMAGED.
• CHECK THAT THE EARTH WIRE IS NOT BROKEN OR DISCONNECTED BEFORE SERVICE AND INSTALLATION. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.
• DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS. FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.
• TO PREVENT THE INDOOR UNIT FROM OVERHEATING AND CAUSING A FIRE HAZARD, PLACE THE UNIT
WELL AWAY (MORE THAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEAT RESISTORS, FURNACE, STOVES, ETC.
• WHEN MOVING THE AIR-CONDITIONER FOR INSTALLATION IN ANOTHER PLACE, BE VERY CAREFUL NOT
TO ALLOW THE SPECIFIED REFRIGERANT (R410A) TO BECOME MIXED WITH ANY OTHER GASEOUS
BODY INTO THE REFRIGERATION CIRCUIT. IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT,
THE GAS PRESSURE IN THE REFRIGERATION CIRCUIT WILL BECOME ABNORMALLY HIGH AND IT MAY
RESULT IN THE PIPE BURSTING AND POSSIBLE PERSONNEL INJURIES.
• IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE SERVICE WORK AND
THE INSTALLATION WORK, IMMEDIATELY LET FRESH AIR INTO THE ROOM. IF THE REFRIGERANT GAS IS
HEATED, SUCH AS BY FIRE, GENERATION OF POISONOUS GAS MAY RESULT.
WARNING
• Do not use any refrigerant different from the one specified for complement or replacement.
Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which may result in a failure or
explosion of the product or an injury to your body.
• Never modify this unit by removing any of the safety guards or bypass any of the safety interlock switches.
• Do not install in a place which cannot bear the weight of the unit.
Personal injury and property damage can result if the unit falls.
• After the installation work, confirm that refrigerant gas does not leak.
If refrigerant gas leaks into the room and flows near a fire source such as a cooking range, noxious gas may generate.
• The electrical work must be performed by a qualified electrician in accordance with the Installation
Manual. Make sure the air conditioner uses an exclusive circuit.
An insufficient circuit capacity or inappropriate installation may cause fire.
• When wiring, use the specified cables and connect the terminals securely to prevent external forces
applied to the cable from affecting the terminals.
• Be sure to provide grounding.
Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone cables.
• Conform to the regulations of the local electric company when wiring the power supply.
Inappropriate grounding may cause electric shock.
-4-
FILE NO. SVM-15074
CAUTION
• Exposure of unit to water or other moisture before installation may result in an electrical short.
Do not store in a wet basement or expose to rain or water.
• Do not install in a place that can increase the vibration of the unit. Do not install in a place that can amplify
the noise level of the unit or where noise or discharged air might disturb neighbors.
• To avoid personal injury, be careful when handling parts with sharp edges.
• Perform the specified installation work to guard against an earthquake.
If the air conditioner is not installed appropriately, accidents may occur due to the falling unit.
2. SPECIFICATIONS
The indoor and outdoor units that can be used in combination are shown in the tables below.
Table of models that can be used in combination
Type
Outdoor unit
Heat pump
RAS-0S3AV-E, -A, -TR
Combinations of indoor unit models that can be connected
Refer to page 8 to 19
NOTES
A 1-room connection is not an option for the indoor units (you cannot connect only one indoor unit).
Be sure to connect indoor units in two or more.
2-1. Specifications
<Heat Pump Models>
RAS-0S3AV-E, -A, -TR
Unit model
RASRAS(kW)
(kW)
(kW)
(kW)
Outdoor
Cooling Capacity
Cooling Capacity range
Heating Capacity
Heating Capacity range
Power supply
Electric
characteristics
Total
COP
Operating noise
Operation mode
Running current
Power consumption
Power factor
Starting current
(Cooling/Heating)
Outdoor
(Cooling/Heating)
Full indoor units operating
Dimension
Height
Width
Depth
Compressor
A unit liquid side/gas side
B unit liquid side/gas side
Ø6.35 / Ø12.7
Motor output
Type
Model
Fan motor output
Air flow rate
Type
Piping connection
Outdoor unit
48 / 49
890
900
320
72
2000
Twin rotary type with DC-inverter variable speed control
DA220A2T-20LD
60
High: 2507, Medium: 2507
Flare connection
Ø6.35 / Ø12.7
Net weight
Outdoor unit
(A)
(W)
(%)
(A)
(mm)
(mm)
(mm)
(kg)
(W)
(W)
(m³/h)
C unit liquid side/gas side
Maximum length (per unit)
Maximum length (total)
Maximum chargeless length
Maximum height difference
Name of refirigerant
Weight
Wiring connection
Power supply / interconnection
Usable temperature range
Outdoor
Accessory
Outdoor unit
%1.9(;%1.(;
0S3AV-E, -A, -TR
WR
9.0
WR
220-240V 1Ph 50Hz / 220V 1Ph 60Hz
Cooling
Heating
2
95
95
(Cooling/Heating)
Unit model
Ø6.35 / Ø9.52
(m)
(m)
(m)
(m)
25
70
40
15
R410A
2.40
(kg)
3 Wires : includes earth / 4 Wires : includes earth
(°C)
-10 to 46 / -15 to 24
RAS-
0S3AV-E, -A, -TR
Installation manual
1
• For performance when each indoor unit is combined with other unit, refer to the separate table.
• The specifications may be subject to change without notice for purpose of improvement.
-5-
FILE NO. SVM-15074
2-2-1. SUMMARIES OF PRODUCT CHARACTERISTICS
RAS-3M26S3AV-A
TKHVHDLUFRQGLWLRQHUVDUHFRPPRGLWLHVIRU'5(''HPDQG5HVSRQVH(QDEOLQJ'HYLFHWKDWFRPSOLHVZLWK
AS/NZS 4755.3.1.
These models supports DRM1 DRM2 DRM3.
AS/NZS 4755
DRM1
Demand response mode
DRM1
DRM2
DRM3
DRM2
DRM3
Description
Compressor off
E30m ≤ R × 0.50 × 0.5
E30m ≤ R × 0.75 × 0.5
*1: E30m = total electrical energy (kWh) used by the air conditioner for all purposes (including compressors,
controls and fans) over a 30 min period.
*2: R = rated input electrical power of the air conditioner (kW) at rated capacity in the mode in which it is
operating during the demand response event (i.e.cooling or heating).
DRED installation position
Cord clamp
DRED terminal block connections
Banding band
Outline of DRED wiring
Demand response interface
CN101
Transformer
CN100
MCC-1653
Outdoor control
P.C. board
CN102
CN105
COM DRM1 DRM2 DRM3
COM DRM1 DRM2 DRM3
L
N
1 2 3
Power supply
DRED
Indoor (A~C) unit
Connecting
Locally procured
-6-
FILE NO. SVM-15074
2-2-2. SPECIFICATIONS OF ELECTRICAL PARTS
1. Parts for demand response (Common usage)
No.
Parts name
1 Demand response P.C. board
2 Transformer
Type
MCC-1653
TT-02
Specifications
AC230-240V,50Hz
AC230V,50/60Hz,150mA
2. Demand response P.C. board
DRC signal reception connector CN01
Transformer output
connector CN102
DRC signal
transmission
connector
CN105
DB100
LED indicator D101
Power supply
protection fuse
F100 (250V/3.15A)
Transformer input
connector CN101
Power supply input
connector CN100
-7-
FILE NO. SVM-15074
Outdoor Unit : RAS-3M26S3AV‐E,-A,-TR
<Cooling / 220V>
Power
supply
Operating
status
(V)
220
1 unit
2 units
Indoor unit
Unit capacity
(kW)
A
B
C
A
B
C
07
10
13
16
18
22
24
07
10
13
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
18
22
24
07
07
07
07
07
07
07
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
18
18
18
-
2.00
2.70
3.70
4.50
5.00
6.00
7.10
2.00
2.70
3.70
4.08
4.50
4.73
5.31
2.70
3.41
3.94
4.09
4.69
5.22
3.15
3.73
3.91
4.45
4.73
3.60
3.79
4.17
4.47
3.60
4.04
4.34
2.00
2.00
2.00
1.82
1.80
1.58
1.49
2.70
2.49
2.36
2.21
2.11
1.98
3.15
3.07
2.89
2.75
2.47
3.60
3.41
3.13
2.83
3.60
3.36
3.06
-
Outdoor noise (dB)
Total
Cooling capacity
Power consumption
Operating current
(kW)
(W)
(A)
2.0
2.7
3.7
4.5
5.0
6.0
7.1
4.0
4.7
5.7
5.9
6.3
6.3
6.8
5.4
5.9
6.3
6.3
6.8
7.2
6.3
6.8
6.8
7.2
7.2
7.2
7.2
7.3
7.3
7.2
7.4
7.4
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
1.4
1.4
1.4
1.4
1.4
2.4
2.4
2.5
2.5
2.6
2.7
2.9
2.9
3.0
2.5
2.7
2.9
2.9
3.0
3.2
2.9
3.0
3.0
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
-
2.5
3.2
4.4
5.0
5.2
6.8
7.2
6.3
6.3
6.5
6.6
6.9
7.1
7.4
6.3
6.6
6.9
7.1
7.4
7.8
7.1
7.4
7.4
7.8
8.4
7.8
7.8
8.4
8.4
8.4
8.4
8.4
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
650
750
1200
1650
1950
2020
2390
950
1200
1600
1700
2000
2000
2200
1500
1700
2000
2000
2200
2300
2000
2200
2200
2300
2300
2300
2300
2400
2400
2300
2400
2400
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
640
640
640
640
640
640
660
640
640
660
660
670
670
690
640
660
670
670
690
700
670
690
690
700
700
700
700
700
700
700
700
700
-
700
950
1520
2000
2100
2500
2960
1900
1900
2220
2220
2400
2400
2450
1900
2220
2400
2400
2450
2500
2400
2450
2450
2500
2550
2500
2500
2550
2550
2550
2550
2550
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
3.84
4.43
6.20
7.98
9.33
9.56
11.32
4.55
5.74
7.66
8.13
9.57
9.57
10.53
7.18
8.13
9.57
9.57
10.53
11.00
9.57
10.53
10.53
11.00
11.00
11.00
11.00
11.48
11.48
11.00
11.48
11.48
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
3.83
3.83
3.68
3.68
3.68
3.68
3.80
3.64
3.64
3.75
3.75
3.81
3.81
3.92
3.64
3.75
3.81
3.81
3.92
3.98
3.81
3.92
3.92
3.98
3.98
3.98
3.98
3.98
3.98
3.98
3.98
3.98
-
3.74
4.64
7.20
9.28
9.74
11.60
13.73
8.81
8.81
10.30
10.30
11.13
11.13
11.36
8.81
10.30
11.13
11.13
11.36
11.60
11.13
11.36
11.36
11.60
11.83
11.60
11.60
11.83
11.83
11.83
11.83
11.83
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Sound
Pressure
Sound
Power
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
• The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/WB=35/-°C
-8-
FILE NO. SVM-15074
<Cooling / 220V> (Continued)
Power
supply
Operating
status
(V)
220
3 units
Indoor unit
Unit capacity
(kW)
A
B
C
A
B
C
07
10
13
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
13
16
18
22
24
16
18
22
24
16
18
22
07
07
07
07
07
07
07
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
13
13
13
13
13
16
16
16
16
16
16
16
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
13
13
13
13
13
13
13
13
13
16
16
16
2.00
2.70
3.56
3.92
4.11
4.44
4.73
2.70
3.26
3.62
3.81
4.15
4.45
2.91
3.26
3.46
3.79
4.10
3.03
3.22
3.60
3.92
2.47
3.01
3.36
3.56
3.89
4.20
2.71
3.06
3.25
3.63
3.94
2.85
3.03
3.41
3.72
2.47
2.80
2.98
3.36
3.67
2.66
2.84
3.17
3.48
2.50
2.68
3.00
2.00
2.00
1.92
1.74
1.64
1.48
1.33
2.70
2.38
2.17
2.06
1.87
1.69
2.91
2.68
2.56
2.34
2.14
3.03
2.90
2.70
2.48
2.47
2.20
2.02
1.92
1.75
1.60
2.71
2.51
2.40
2.24
2.06
2.85
2.73
2.56
2.36
2.47
2.30
2.21
2.07
1.91
2.66
2.56
2.38
2.21
2.50
2.41
2.25
2.00
2.00
1.92
1.74
1.64
1.48
1.33
2.00
1.76
1.61
1.53
1.38
1.25
1.57
1.45
1.38
1.26
1.16
1.35
1.29
1.20
1.10
2.47
2.20
2.02
1.92
1.75
1.60
1.98
1.83
1.75
1.63
1.50
1.71
1.64
1.53
1.42
2.47
2.30
2.21
2.07
1.91
2.19
2.10
1.95
1.81
2.50
2.41
2.25
Outdoor noise (dB)
Total
Cooling capacity
Power consumption
Operating current
(kW)
(W)
(A)
6.0
6.7
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.5
7.5
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.5
7.5
7.4
7.4
7.5
7.5
7.4
7.4
7.4
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
3.8
3.8
3.9
3.9
4.0
4.0
4.0
3.8
3.9
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.1
4.1
3.9
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.1
4.1
4.0
4.0
4.1
4.1
4.0
4.0
4.0
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
-
8.4
8.4
8.6
8.6
8.8
8.8
8.8
8.4
8.6
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
9.0
9.0
8.6
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
9.0
9.0
8.8
8.8
9.0
9.0
8.8
8.8
8.8
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
1400
1660
1975
1975
1975
1975
1975
1850
1975
1975
1975
1975
1975
1975
1975
1975
1975
1975
1975
1975
2000
2000
1975
1975
1975
1975
1975
1975
1975
1975
1975
2000
2000
1975
1975
2000
2000
1975
1975
1975
2000
2000
2000
2000
2000
2000
2000
2000
2000
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
950
950
960
960
970
970
970
950
960
970
970
970
970
970
970
970
970
970
970
970
980
980
960
970
970
970
970
970
970
970
970
980
980
970
970
980
980
970
970
970
980
980
980
980
980
980
980
980
980
-
2720
2720
2750
2750
2770
2770
2770
2720
2750
2770
2770
2770
2770
2770
2770
2770
2770
2770
2770
2770
2800
2800
2750
2770
2770
2770
2770
2770
2770
2770
2770
2800
2800
2770
2770
2800
2800
2770
2770
2770
2800
2800
2800
2800
2800
2800
2800
2800
2800
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
6.70
7.94
9.45
9.45
9.45
9.45
9.45
8.85
9.45
9.45
9.45
9.45
9.45
9.45
9.45
9.45
9.45
9.45
9.45
9.45
9.57
9.57
9.45
9.45
9.45
9.45
9.45
9.45
9.45
9.45
9.45
9.57
9.57
9.45
9.45
9.57
9.57
9.45
9.45
9.45
9.57
9.57
9.57
9.57
9.57
9.57
9.57
9.57
9.57
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
4.80
4.80
4.85
4.85
4.90
4.90
4.90
4.80
4.85
4.90
4.90
4.90
4.90
4.90
4.90
4.90
4.90
4.90
4.90
4.90
4.95
4.95
4.85
4.90
4.90
4.90
4.90
4.90
4.90
4.90
4.90
4.95
4.95
4.90
4.90
4.95
4.95
4.90
4.90
4.90
4.95
4.95
4.95
4.95
4.95
4.95
4.95
4.95
4.95
-
12.62
12.62
12.76
12.76
12.85
12.85
12.85
12.62
12.76
12.85
12.85
12.85
12.85
12.85
12.85
12.85
12.85
12.85
12.85
12.85
12.99
12.99
12.76
12.85
12.85
12.85
12.85
12.85
12.85
12.85
12.85
12.99
12.99
12.85
12.85
12.99
12.99
12.85
12.85
12.85
12.99
12.99
12.99
12.99
12.99
12.99
12.99
12.99
12.99
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Sound
Pressure
Sound
Power
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
• The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/WB=35/-°C
-9-
FILE NO. SVM-15074
<Cooling / 230V>
Power
supply
Operating
status
(V)
230
1 unit
2 units
Indoor unit
Unit capacity
(kW)
A
B
C
A
B
C
07
10
13
16
18
22
24
07
10
13
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
18
22
24
07
07
07
07
07
07
07
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
18
18
18
-
2.00
2.70
3.70
4.50
5.00
6.00
7.10
2.00
2.70
3.70
4.08
4.50
4.73
5.31
2.70
3.41
3.94
4.09
4.69
5.22
3.15
3.73
3.91
4.45
4.73
3.60
3.79
4.17
4.47
3.60
4.04
4.34
2.00
2.00
2.00
1.82
1.80
1.58
1.49
2.70
2.49
2.36
2.21
2.11
1.98
3.15
3.07
2.89
2.75
2.47
3.60
3.41
3.13
2.83
3.60
3.36
3.06
-
Outdoor noise (dB)
Total
Cooling capacity
Power consumption
Operating current
(kW)
(W)
(A)
2.0
2.7
3.7
4.5
5.0
6.0
7.1
4.0
4.7
5.7
5.9
6.3
6.3
6.8
5.4
5.9
6.3
6.3
6.8
7.2
6.3
6.8
6.8
7.2
7.2
7.2
7.2
7.3
7.3
7.2
7.4
7.4
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
1.4
1.4
1.4
1.4
1.4
2.4
2.4
2.5
2.5
2.6
2.7
2.9
2.9
3.0
2.5
2.7
2.9
2.9
3.0
3.2
2.9
3.0
3.0
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
-
2.5
3.2
4.4
5.0
5.2
6.8
7.2
6.3
6.3
6.5
6.6
6.9
7.1
7.4
6.3
6.6
6.9
7.1
7.4
7.8
7.1
7.4
7.4
7.8
8.4
7.8
7.8
8.4
8.4
8.4
8.4
8.4
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
650
750
1200
1650
1950
2020
2390
950
1200
1600
1700
2000
2000
2200
1500
1700
2000
2000
2200
2300
2000
2200
2200
2300
2300
2300
2300
2400
2400
2300
2400
2400
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
640
640
640
640
640
640
660
640
640
660
660
670
670
690
640
660
670
670
690
700
670
690
690
700
700
700
700
700
700
700
700
700
-
700
950
1520
2000
2100
2500
2960
1900
1900
2220
2220
2400
2400
2450
1900
2220
2400
2400
2450
2500
2400
2450
2450
2500
2550
2500
2500
2550
2550
2550
2550
2550
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
3.67
4.23
5.93
7.63
8.92
9.15
10.82
4.35
5.49
7.32
7.78
9.15
9.15
10.07
6.86
7.78
9.15
9.15
10.07
10.53
9.15
10.07
10.07
10.53
10.53
10.53
10.53
10.98
10.98
10.53
10.98
10.98
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
3.66
3.66
3.52
3.52
3.52
3.52
3.63
3.48
3.48
3.59
3.59
3.64
3.64
3.75
3.48
3.59
3.64
3.64
3.75
3.80
3.64
3.75
3.75
3.80
3.80
3.80
3.80
3.80
3.80
3.80
3.80
3.80
-
3.58
4.44
6.88
8.87
9.32
11.09
13.13
8.43
8.43
9.85
9.85
10.65
10.65
10.87
8.43
9.85
10.65
10.65
10.87
11.09
10.65
10.87
10.87
11.09
11.31
11.09
11.09
11.31
11.31
11.31
11.31
11.31
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Sound
Pressure
Sound
Power
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
• The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/WB=35/-°C
- 10 -
FILE NO. SVM-15074
<Cooling / 230V> (Continued)
Power
supply
Operating
status
(V)
230
3 units
Indoor unit
Unit capacity
(kW)
A
B
C
A
B
C
07
10
13
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
13
16
18
22
24
16
18
22
24
16
18
22
07
07
07
07
07
07
07
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
13
13
13
13
13
16
16
16
16
16
16
16
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
13
13
13
13
13
13
13
13
13
16
16
16
2.00
2.70
3.56
3.92
4.11
4.44
4.73
2.70
3.26
3.62
3.81
4.15
4.45
2.91
3.26
3.46
3.79
4.10
3.03
3.22
3.60
3.92
2.47
3.01
3.36
3.56
3.89
4.20
2.71
3.06
3.25
3.63
3.94
2.85
3.03
3.41
3.72
2.47
2.80
2.98
3.36
3.67
2.66
2.84
3.17
3.48
2.50
2.68
3.00
2.00
2.00
1.92
1.74
1.64
1.48
1.33
2.70
2.38
2.17
2.06
1.87
1.69
2.91
2.68
2.56
2.34
2.14
3.03
2.90
2.70
2.48
2.47
2.20
2.02
1.92
1.75
1.60
2.71
2.51
2.40
2.24
2.06
2.85
2.73
2.56
2.36
2.47
2.30
2.21
2.07
1.91
2.66
2.56
2.38
2.21
2.50
2.41
2.25
2.00
2.00
1.92
1.74
1.64
1.48
1.33
2.00
1.76
1.61
1.53
1.38
1.25
1.57
1.45
1.38
1.26
1.16
1.35
1.29
1.20
1.10
2.47
2.20
2.02
1.92
1.75
1.60
1.98
1.83
1.75
1.63
1.50
1.71
1.64
1.53
1.42
2.47
2.30
2.21
2.07
1.91
2.19
2.10
1.95
1.81
2.50
2.41
2.25
Outdoor noise (dB)
Total
Cooling capacity
Power consumption
Operating current
(kW)
(W)
(A)
6.0
6.7
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.5
7.5
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.5
7.5
7.4
7.4
7.5
7.5
7.4
7.4
7.4
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
3.8
3.8
3.9
3.9
4.0
4.0
4.0
3.8
3.9
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.1
4.1
3.9
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.1
4.1
4.0
4.0
4.1
4.1
4.0
4.0
4.0
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
-
8.4
8.4
8.6
8.6
8.8
8.8
8.8
8.4
8.6
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
9.0
9.0
8.6
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
9.0
9.0
8.8
8.8
9.0
9.0
8.8
8.8
8.8
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
1400
1660
1975
1975
1975
1975
1975
1850
1975
1975
1975
1975
1975
1975
1975
1975
1975
1975
1975
1975
2000
2000
1975
1975
1975
1975
1975
1975
1975
1975
1975
2000
2000
1975
1975
2000
2000
1975
1975
1975
2000
2000
2000
2000
2000
2000
2000
2000
2000
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
950
950
960
960
970
970
970
950
960
970
970
970
970
970
970
970
970
970
970
970
980
980
960
970
970
970
970
970
970
970
970
980
980
970
970
980
980
970
970
970
980
980
980
980
980
980
980
980
980
-
2720
2720
2750
2750
2770
2770
2770
2720
2750
2770
2770
2770
2770
2770
2770
2770
2770
2770
2770
2770
2800
2800
2750
2770
2770
2770
2770
2770
2770
2770
2770
2800
2800
2770
2770
2800
2800
2770
2770
2770
2800
2800
2800
2800
2800
2800
2800
2800
2800
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
6.41
7.60
9.04
9.04
9.04
9.04
9.04
8.47
9.04
9.04
9.04
9.04
9.04
9.04
9.04
9.04
9.04
9.04
9.04
9.04
9.15
9.15
9.04
9.04
9.04
9.04
9.04
9.04
9.04
9.04
9.04
9.15
9.15
9.04
9.04
9.15
9.15
9.04
9.04
9.04
9.15
9.15
9.15
9.15
9.15
9.15
9.15
9.15
9.15
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
4.59
4.59
4.64
4.64
4.69
4.69
4.69
4.59
4.64
4.69
4.69
4.69
4.69
4.69
4.69
4.69
4.69
4.69
4.69
4.69
4.73
4.73
4.64
4.69
4.69
4.69
4.69
4.69
4.69
4.69
4.69
4.73
4.73
4.69
4.69
4.73
4.73
4.69
4.69
4.69
4.73
4.73
4.73
4.73
4.73
4.73
4.73
4.73
4.73
-
12.07
12.07
12.20
12.20
12.29
12.29
12.29
12.07
12.20
12.29
12.29
12.29
12.29
12.29
12.29
12.29
12.29
12.29
12.29
12.29
12.42
12.42
12.20
12.29
12.29
12.29
12.29
12.29
12.29
12.29
12.29
12.42
12.42
12.29
12.29
12.42
12.42
12.29
12.29
12.29
12.42
12.42
12.42
12.42
12.42
12.42
12.42
12.42
12.42
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Sound
Pressure
Sound
Power
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
• The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/WB=35/-°C
- 11 -
FILE NO. SVM-15074
<Cooling / 240V>
Power
supply
Operating
status
(V)
240
1 unit
2 units
Indoor unit
Unit capacity
(kW)
A
B
C
A
B
C
07
10
13
16
18
22
24
07
10
13
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
18
22
24
07
07
07
07
07
07
07
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
18
18
18
-
2.00
2.70
3.70
4.50
5.00
6.00
7.10
2.00
2.70
3.70
4.08
4.50
4.73
5.31
2.70
3.41
3.94
4.09
4.69
5.22
3.15
3.73
3.91
4.45
4.73
3.60
3.79
4.17
4.47
3.60
4.04
4.34
2.00
2.00
2.00
1.82
1.80
1.58
1.49
2.70
2.49
2.36
2.21
2.11
1.98
3.15
3.07
2.89
2.75
2.47
3.60
3.41
3.13
2.83
3.60
3.36
3.06
-
Outdoor noise (dB)
Total
Cooling capacity
Power consumption
Operating current
(kW)
(W)
(A)
2.0
2.7
3.7
4.5
5.0
6.0
7.1
4.0
4.7
5.7
5.9
6.3
6.3
6.8
5.4
5.9
6.3
6.3
6.8
7.2
6.3
6.8
6.8
7.2
7.2
7.2
7.2
7.3
7.3
7.2
7.4
7.4
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
1.4
1.4
1.4
1.4
1.4
2.4
2.4
2.5
2.5
2.6
2.7
2.9
2.9
3.0
2.5
2.7
2.9
2.9
3.0
3.2
2.9
3.0
3.0
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
-
2.5
3.2
4.4
5.0
5.2
6.8
7.2
6.3
6.3
6.5
6.6
6.9
7.1
7.4
6.3
6.6
6.9
7.1
7.4
7.8
7.1
7.4
7.4
7.8
8.4
7.8
7.8
8.4
8.4
8.4
8.4
8.4
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
650
750
1200
1650
1950
2020
2390
950
1200
1600
1700
2000
2000
2200
1500
1700
2000
2000
2200
2300
2000
2200
2200
2300
2300
2300
2300
2400
2400
2300
2400
2400
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
640
640
640
640
640
640
660
640
640
660
660
670
670
690
640
660
670
670
690
700
670
690
690
700
700
700
700
700
700
700
700
700
-
700
950
1520
2000
2100
2500
2960
1900
1900
2220
2220
2400
2400
2450
1900
2220
2400
2400
2450
2500
2400
2450
2450
2500
2550
2500
2500
2550
2550
2550
2550
2550
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
3.52
4.06
5.68
7.31
8.55
8.77
10.37
4.17
5.26
7.02
7.46
8.77
8.77
9.65
6.58
7.46
8.77
8.77
9.65
10.09
8.77
9.65
9.65
10.09
10.09
10.09
10.09
10.53
10.53
10.09
10.53
10.53
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
3.51
3.51
3.38
3.38
3.38
3.38
3.48
3.33
3.33
3.44
3.44
3.49
3.49
3.59
3.33
3.44
3.49
3.49
3.59
3.65
3.49
3.59
3.59
3.65
3.65
3.65
3.65
3.65
3.65
3.65
3.65
3.65
-
3.43
4.26
6.60
8.50
8.93
10.63
12.59
8.08
8.08
9.44
9.44
10.20
10.20
10.42
8.08
9.44
10.20
10.20
10.42
10.63
10.20
10.42
10.42
10.63
10.84
10.63
10.63
10.84
10.84
10.84
10.84
10.84
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Sound
Pressure
Sound
Power
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
• The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/WB=35/-°C
- 12 -
FILE NO. SVM-15074
<Cooling / 240V> (Continued)
Power
supply
Operating
status
(V)
240
3 units
Indoor unit
Unit capacity
(kW)
A
B
C
A
B
C
07
10
13
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
13
16
18
22
24
16
18
22
24
16
18
22
07
07
07
07
07
07
07
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
13
13
13
13
13
16
16
16
16
16
16
16
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
13
13
13
13
13
13
13
13
13
16
16
16
2.00
2.70
3.56
3.92
4.11
4.44
4.73
2.70
3.26
3.62
3.81
4.15
4.45
2.91
3.26
3.46
3.79
4.10
3.03
3.22
3.60
3.92
2.47
3.01
3.36
3.56
3.89
4.20
2.71
3.06
3.25
3.63
3.94
2.85
3.03
3.41
3.72
2.47
2.80
2.98
3.36
3.67
2.66
2.84
3.17
3.48
2.50
2.68
3.00
2.00
2.00
1.92
1.74
1.64
1.48
1.33
2.70
2.38
2.17
2.06
1.87
1.69
2.91
2.68
2.56
2.34
2.14
3.03
2.90
2.70
2.48
2.47
2.20
2.02
1.92
1.75
1.60
2.71
2.51
2.40
2.24
2.06
2.85
2.73
2.56
2.36
2.47
2.30
2.21
2.07
1.91
2.66
2.56
2.38
2.21
2.50
2.41
2.25
2.00
2.00
1.92
1.74
1.64
1.48
1.33
2.00
1.76
1.61
1.53
1.38
1.25
1.57
1.45
1.38
1.26
1.16
1.35
1.29
1.20
1.10
2.47
2.20
2.02
1.92
1.75
1.60
1.98
1.83
1.75
1.63
1.50
1.71
1.64
1.53
1.42
2.47
2.30
2.21
2.07
1.91
2.19
2.10
1.95
1.81
2.50
2.41
2.25
Outdoor noise (dB)
Total
Cooling capacity
Power consumption
Operating current
(kW)
(W)
(A)
6.0
6.7
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.5
7.5
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.5
7.5
7.4
7.4
7.5
7.5
7.4
7.4
7.4
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
3.8
3.8
3.9
3.9
4.0
4.0
4.0
3.8
3.9
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.1
4.1
3.9
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.1
4.1
4.0
4.0
4.1
4.1
4.0
4.0
4.0
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
-
8.4
8.4
8.6
8.6
8.8
8.8
8.8
8.4
8.6
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
9.0
9.0
8.6
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
9.0
9.0
8.8
8.8
9.0
9.0
8.8
8.8
8.8
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
1400
1660
1975
1975
1975
1975
1975
1850
1975
1975
1975
1975
1975
1975
1975
1975
1975
1975
1975
1975
2000
2000
1975
1975
1975
1975
1975
1975
1975
1975
1975
2000
2000
1975
1975
2000
2000
1975
1975
1975
2000
2000
2000
2000
2000
2000
2000
2000
2000
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
950
950
960
960
970
970
970
950
960
970
970
970
970
970
970
970
970
970
970
970
980
980
960
970
970
970
970
970
970
970
970
980
980
970
970
980
980
970
970
970
980
980
980
980
980
980
980
980
980
-
2720
2720
2750
2750
2770
2770
2770
2720
2750
2770
2770
2770
2770
2770
2770
2770
2770
2770
2770
2770
2800
2800
2750
2770
2770
2770
2770
2770
2770
2770
2770
2800
2800
2770
2770
2800
2800
2770
2770
2770
2800
2800
2800
2800
2800
2800
2800
2800
2800
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
6.14
7.28
8.66
8.66
8.66
8.66
8.66
8.11
8.66
8.66
8.66
8.66
8.66
8.66
8.66
8.66
8.66
8.66
8.66
8.66
8.77
8.77
8.66
8.66
8.66
8.66
8.66
8.66
8.66
8.66
8.66
8.77
8.77
8.66
8.66
8.77
8.77
8.66
8.66
8.66
8.77
8.77
8.77
8.77
8.77
8.77
8.77
8.77
8.77
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
4.40
4.40
4.44
4.44
4.49
4.49
4.49
4.40
4.44
4.49
4.49
4.49
4.49
4.49
4.49
4.49
4.49
4.49
4.49
4.49
4.54
4.54
4.44
4.49
4.49
4.49
4.49
4.49
4.49
4.49
4.49
4.54
4.54
4.49
4.49
4.54
4.54
4.49
4.49
4.49
4.54
4.54
4.54
4.54
4.54
4.54
4.54
4.54
4.54
-
11.56
11.56
11.69
11.69
11.78
11.78
11.78
11.56
11.69
11.78
11.78
11.78
11.78
11.78
11.78
11.78
11.78
11.78
11.78
11.78
11.90
11.90
11.69
11.78
11.78
11.78
11.78
11.78
11.78
11.78
11.78
11.90
11.90
11.78
11.78
11.90
11.90
11.78
11.78
11.78
11.90
11.90
11.90
11.90
11.90
11.90
11.90
11.90
11.90
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Sound
Pressure
Sound
Power
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
• The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/WB=35/-°C
- 13 -
FILE NO. SVM-15074
Outdoor Unit : RAS-3M26S3AV-E,-A,-TR
<Heating / 220V>
Power
supply
Operating
status
(V)
220
1 unit
2 units
Indoor unit
Unit capacity
(kW)
A
B
C
A
B
C
07
10
13
16
18
22
24
07
10
13
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
18
22
24
07
07
07
07
07
07
07
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
18
18
18
-
2.70
4.00
5.00
5.50
6.00
7.00
8.10
2.70
4.00
4.81
5.10
5.45
5.70
6.23
3.60
4.22
4.57
4.74
5.28
5.76
3.95
4.35
4.53
5.02
5.32
4.30
4.49
4.82
5.12
4.30
4.63
4.94
2.70
2.70
2.59
2.50
2.45
2.20
2.08
3.60
3.38
3.33
3.16
3.02
2.84
3.95
3.95
3.77
3.58
3.28
4.30
4.11
3.78
3.48
4.30
3.97
3.66
-
Outdoor noise (dB)
Total
Heating capacity
Power consumption
Operating current
(kW)
(W)
(A)
2.7
4.0
5.0
5.5
6.0
7.0
8.1
5.4
6.7
7.4
7.6
7.9
7.9
8.3
7.2
7.6
7.9
7.9
8.3
8.6
7.9
8.3
8.3
8.6
8.6
8.6
8.6
8.6
8.6
8.6
8.6
8.6
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
0.8
0.8
0.8
0.8
0.8
1.8
1.8
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
-
4.8
5.2
6.5
6.9
7.1
8.2
8.6
7.4
8.9
9.5
9.5
9.5
9.8
10.1
9.5
9.5
9.5
9.8
10.1
10.4
9.8
10.1
10.1
10.4
10.8
10.4
10.4
10.8
10.8
10.8
10.8
10.8
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
900
1450
2050
2400
2630
2620
3080
1500
2080
2300
2300
2450
2450
2500
2200
2300
2450
2450
2500
2550
2450
2500
2500
2550
2550
2550
2550
2550
2550
2550
2550
2550
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
300
300
310
310
310
330
330
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
-
1980
1980
2750
3000
3200
3200
3300
3200
3200
3200
3200
3200
3200
3250
3200
3200
3200
3200
3250
3250
3200
3250
3250
3250
3250
3250
3250
3250
3250
3250
3250
3250
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
4.70
6.94
9.81
11.48
12.58
12.41
14.58
7.18
9.95
11.00
11.00
11.72
11.72
11.96
10.53
11.00
11.72
11.72
11.96
12.20
11.72
11.96
11.96
12.20
12.20
12.20
12.20
12.20
12.20
12.20
12.20
12.20
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
1.87
1.87
1.93
1.93
1.93
2.05
2.05
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
1.94
-
9.18
9.18
12.76
13.91
14.84
14.84
15.31
14.84
14.84
14.84
14.84
14.84
14.84
15.07
14.84
14.84
14.84
14.84
15.07
15.07
14.84
15.07
15.07
15.07
15.07
15.07
15.07
15.07
15.07
15.07
15.07
15.07
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Sound
Pressure
Sound
Power
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
• The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/WB=35/-°C
- 14 -
FILE NO. SVM-15074
<Heating / 220V> (Continued)
Power
supply
Operating
status
(V)
220
3 units
Indoor unit
Unit capacity
(kW)
A
B
C
A
B
C
07
10
13
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
13
16
18
22
24
16
18
22
24
16
18
22
07
07
07
07
07
07
07
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
13
13
13
13
13
16
16
16
16
16
16
16
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
13
13
13
13
13
13
13
13
13
16
16
16
2.70
3.53
4.28
4.49
4.68
5.02
5.34
3.18
3.80
4.01
4.20
4.55
4.87
3.50
3.71
3.90
4.24
4.56
3.57
3.76
4.14
4.47
2.97
3.42
3.63
3.81
4.15
4.48
3.18
3.38
3.56
3.94
4.26
3.26
3.45
3.82
4.14
2.97
3.16
3.34
3.71
4.03
3.09
3.27
3.60
3.92
3.00
3.18
3.50
2.70
2.38
2.31
2.20
2.11
1.94
1.78
3.18
3.04
2.92
2.80
2.60
2.41
3.50
3.37
3.25
3.03
2.82
3.57
3.45
3.26
3.04
2.97
2.74
2.64
2.54
2.37
2.21
3.18
3.07
2.97
2.81
2.63
3.26
3.16
3.00
2.81
2.97
2.87
2.78
2.65
2.49
3.09
3.00
2.83
2.66
3.00
2.91
2.75
2.70
2.38
2.31
2.20
2.11
1.94
1.78
2.14
2.05
1.97
1.89
1.75
1.62
1.89
1.82
1.75
1.63
1.52
1.75
1.69
1.60
1.49
2.97
2.74
2.64
2.54
2.37
2.21
2.54
2.46
2.37
2.25
2.11
2.37
2.30
2.18
2.05
2.97
2.87
2.78
2.65
2.49
2.81
2.73
2.57
2.42
3.00
2.91
2.75
Outdoor noise (dB)
Total
Heating capacity
Power consumption
Operating current
(kW)
(W)
(A)
8.1
8.3
8.9
8.9
8.9
8.9
8.9
8.5
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
9.0
9.0
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
9.0
9.0
8.9
8.9
9.0
9.0
8.9
8.9
8.9
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
-
10.8
10.8
10.8
10.8
11.0
11.0
11.0
10.8
10.8
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.2
11.2
10.8
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.2
11.2
11.0
11.0
11.2
11.2
11.0
11.0
11.0
11.2
11.2
11.2
11.2
11.2
11.2
11.2
11.2
11.2
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
1800
1900
2175
2175
2175
2175
2175
2000
2175
2175
2175
2175
2175
2175
2175
2175
2175
2175
2175
2175
2200
2200
2175
2175
2175
2175
2175
2175
2175
2175
2175
2200
2200
2175
2175
2200
2200
2175
2175
2175
2200
2200
2200
2200
2200
2200
2200
2200
2200
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
-
2750
2750
2750
2750
2830
2830
2830
2750
2750
2830
2830
2830
2830
2830
2830
2830
2830
2830
2830
2830
2900
2900
2750
2830
2830
2830
2830
2830
2830
2830
2830
2900
2900
2830
2830
2900
2900
2830
2830
2830
2900
2900
2900
2900
2900
2900
2900
2900
2900
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
8.61
9.09
10.41
10.41
10.41
10.41
10.41
9.57
10.41
10.41
10.41
10.41
10.41
10.41
10.41
10.41
10.41
10.41
10.41
10.41
10.53
10.53
10.41
10.41
10.41
10.41
10.41
10.41
10.41
10.41
10.41
10.53
10.53
10.41
10.41
10.53
10.53
10.41
10.41
10.41
10.53
10.53
10.53
10.53
10.53
10.53
10.53
10.53
10.53
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
2.16
-
12.76
12.76
12.76
12.76
13.13
13.13
13.13
12.76
12.76
13.13
13.13
13.13
13.13
13.13
13.13
13.13
13.13
13.13
13.13
13.13
13.45
13.45
12.76
13.13
13.13
13.13
13.13
13.13
13.13
13.13
13.13
13.45
13.45
13.13
13.13
13.45
13.45
13.13
13.13
13.13
13.45
13.45
13.45
13.45
13.45
13.45
13.45
13.45
13.45
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Sound
Pressure
Sound
Power
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
• The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/WB=35/-°C
- 15 -
FILE NO. SVM-15074
<Heating / 230V>
Power
supply
Operatin
g status
(V)
230
1 unit
2 units
Indoor unit
Unit capacity
(kW)
A
B
C
A
B
C
07
10
13
16
18
22
24
07
10
13
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
18
22
24
07
07
07
07
07
07
07
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
18
18
18
-
2.70
4.00
5.00
5.50
6.00
7.00
8.10
2.70
4.00
4.81
5.10
5.45
5.70
6.23
3.60
4.22
4.57
4.74
5.28
5.76
3.95
4.35
4.53
5.02
5.32
4.30
4.49
4.82
5.12
4.30
4.63
4.94
2.70
2.70
2.59
2.50
2.45
2.20
2.08
3.60
3.38
3.33
3.16
3.02
2.84
3.95
3.95
3.77
3.58
3.28
4.30
4.11
3.78
3.48
4.30
3.97
3.66
-
Outdoor noise (dB)
Total
Heating capacity
Power consumption
Operating current
(kW)
(W)
(A)
2.7
4.0
5.0
5.5
6.0
7.0
8.1
5.4
6.7
7.4
7.6
7.9
7.9
8.3
7.2
7.6
7.9
7.9
8.3
8.6
7.9
8.3
8.3
8.6
8.6
8.6
8.6
8.6
8.6
8.6
8.6
8.6
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
0.8
0.8
0.8
0.8
0.8
1.8
1.8
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
-
4.8
5.2
6.5
6.9
7.1
8.2
8.6
7.4
8.9
9.5
9.5
9.5
9.8
10.1
9.5
9.5
9.5
9.8
10.1
10.4
9.8
10.1
10.1
10.4
10.8
10.4
10.4
10.8
10.8
10.8
10.8
10.8
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
900
1450
2050
2400
2630
2620
3080
1500
2080
2300
2300
2450
2450
2500
2200
2300
2450
2450
2500
2550
2450
2500
2500
2550
2550
2550
2550
2550
2550
2550
2550
2550
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
300
300
310
310
310
330
330
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
-
1980
1980
2750
3000
3200
3200
3300
3200
3200
3200
3200
3200
3200
3250
3200
3200
3200
3200
3250
3250
3200
3250
3250
3250
3250
3250
3250
3250
3250
3250
3250
3250
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
4.50
6.64
9.38
10.98
12.04
11.87
13.95
6.86
9.52
10.53
10.53
11.21
11.21
11.44
10.07
10.53
11.21
11.21
11.44
11.67
11.21
11.44
11.44
11.67
11.67
11.67
11.67
11.67
11.67
11.67
11.67
11.67
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
1.79
1.79
1.85
1.85
1.85
1.97
1.97
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
1.86
-
8.78
8.78
12.20
13.31
14.20
14.20
14.64
14.20
14.20
14.20
14.20
14.20
14.20
14.42
14.20
14.20
14.20
14.20
14.42
14.42
14.20
14.42
14.42
14.42
14.42
14.42
14.42
14.42
14.42
14.42
14.42
14.42
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Sound
Pressure
Sound
Power
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
• The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/WB=35/-°C
- 16 -
FILE NO. SVM-15074
<Heating / 230V> (Continued)
Power
supply
Operatin
g status
(V)
230
3 units
Indoor unit
Unit capacity
(kW)
A
B
C
A
B
C
07
10
13
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
13
16
18
22
24
16
18
22
24
16
18
22
07
07
07
07
07
07
07
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
13
13
13
13
13
16
16
16
16
16
16
16
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
13
13
13
13
13
13
13
13
13
16
16
16
2.70
3.53
4.28
4.49
4.68
5.02
5.34
3.18
3.80
4.01
4.20
4.55
4.87
3.50
3.71
3.90
4.24
4.56
3.57
3.76
4.14
4.47
2.97
3.42
3.63
3.81
4.15
4.48
3.18
3.38
3.56
3.94
4.26
3.26
3.45
3.82
4.14
2.97
3.16
3.34
3.71
4.03
3.09
3.27
3.60
3.92
3.00
3.18
3.50
2.70
2.38
2.31
2.20
2.11
1.94
1.78
3.18
3.04
2.92
2.80
2.60
2.41
3.50
3.37
3.25
3.03
2.82
3.57
3.45
3.26
3.04
2.97
2.74
2.64
2.54
2.37
2.21
3.18
3.07
2.97
2.81
2.63
3.26
3.16
3.00
2.81
2.97
2.87
2.78
2.65
2.49
3.09
3.00
2.83
2.66
3.00
2.91
2.75
2.70
2.38
2.31
2.20
2.11
1.94
1.78
2.14
2.05
1.97
1.89
1.75
1.62
1.89
1.82
1.75
1.63
1.52
1.75
1.69
1.60
1.49
2.97
2.74
2.64
2.54
2.37
2.21
2.54
2.46
2.37
2.25
2.11
2.37
2.30
2.18
2.05
2.97
2.87
2.78
2.65
2.49
2.81
2.73
2.57
2.42
3.00
2.91
2.75
Outdoor noise (dB)
Total
Heating capacity
Power consumption
Operating current
(kW)
(W)
(A)
8.1
8.3
8.9
8.9
8.9
8.9
8.9
8.5
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
9.0
9.0
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
9.0
9.0
8.9
8.9
9.0
9.0
8.9
8.9
8.9
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
-
10.8
10.8
10.8
10.8
11.0
11.0
11.0
10.8
10.8
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.2
11.2
10.8
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.2
11.2
11.0
11.0
11.2
11.2
11.0
11.0
11.0
11.2
11.2
11.2
11.2
11.2
11.2
11.2
11.2
11.2
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
1800
1900
2175
2175
2175
2175
2175
2000
2175
2175
2175
2175
2175
2175
2175
2175
2175
2175
2175
2175
2200
2200
2175
2175
2175
2175
2175
2175
2175
2175
2175
2200
2200
2175
2175
2200
2200
2175
2175
2175
2200
2200
2200
2200
2200
2200
2200
2200
2200
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
-
2750
2750
2750
2750
2830
2830
2830
2750
2750
2830
2830
2830
2830
2830
2830
2830
2830
2830
2830
2830
2900
2900
2750
2830
2830
2830
2830
2830
2830
2830
2830
2900
2900
2830
2830
2900
2900
2830
2830
2830
2900
2900
2900
2900
2900
2900
2900
2900
2900
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
8.24
8.70
9.95
9.95
9.95
9.95
9.95
9.15
9.95
9.95
9.95
9.95
9.95
9.95
9.95
9.95
9.95
9.95
9.95
9.95
10.07
10.07
9.95
9.95
9.95
9.95
9.95
9.95
9.95
9.95
9.95
10.07
10.07
9.95
9.95
10.07
10.07
9.95
9.95
9.95
10.07
10.07
10.07
10.07
10.07
10.07
10.07
10.07
10.07
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
2.07
-
12.20
12.20
12.20
12.20
12.56
12.56
12.56
12.20
12.20
12.56
12.56
12.56
12.56
12.56
12.56
12.56
12.56
12.56
12.56
12.56
12.87
12.87
12.20
12.56
12.56
12.56
12.56
12.56
12.56
12.56
12.56
12.87
12.87
12.56
12.56
12.87
12.87
12.56
12.56
12.56
12.87
12.87
12.87
12.87
12.87
12.87
12.87
12.87
12.87
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Sound
Pressure
Sound
Power
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
• The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/WB=35/-°C
- 17 -
FILE NO. SVM-15074
<Heating / 240V>
Power
supply
Operating
status
(V)
240
1 unit
2 units
Indoor unit
Unit capacity
(kW)
A
B
C
A
B
C
07
10
13
16
18
22
24
07
10
13
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
18
22
24
07
07
07
07
07
07
07
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
18
18
18
-
2.70
4.00
5.00
5.50
6.00
7.00
8.10
2.70
4.00
4.81
5.10
5.45
5.70
6.23
3.60
4.22
4.57
4.74
5.28
5.76
3.95
4.35
4.53
5.02
5.32
4.30
4.49
4.82
5.12
4.30
4.63
4.94
2.70
2.70
2.59
2.50
2.45
2.20
2.08
3.60
3.38
3.33
3.16
3.02
2.84
3.95
3.95
3.77
3.58
3.28
4.30
4.11
3.78
3.48
4.30
3.97
3.66
-
Outdoor noise (dB)
Total
Heating capacity
Power consumption
Operating current
(kW)
(W)
(A)
2.7
4.0
5.0
5.5
6.0
7.0
8.1
5.4
6.7
7.4
7.6
7.9
7.9
8.3
7.2
7.6
7.9
7.9
8.3
8.6
7.9
8.3
8.3
8.6
8.6
8.6
8.6
8.6
8.6
8.6
8.6
8.6
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
0.8
0.8
0.8
0.8
0.8
1.8
1.8
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
-
4.8
5.2
6.5
6.9
7.1
8.2
8.6
7.4
8.9
9.5
9.5
9.5
9.8
10.1
9.5
9.5
9.5
9.8
10.1
10.4
9.8
10.1
10.1
10.4
10.8
10.4
10.4
10.8
10.8
10.8
10.8
10.8
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
900
1450
2050
2400
2630
2620
3080
1500
2080
2300
2300
2450
2450
2500
2200
2300
2450
2450
2500
2550
2450
2500
2500
2550
2550
2550
2550
2550
2550
2550
2550
2550
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
300
300
310
310
310
330
330
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
320
-
1980
1980
2750
3000
3200
3200
3300
3200
3200
3200
3200
3200
3200
3250
3200
3200
3200
3200
3250
3250
3200
3250
3250
3250
3250
3250
3250
3250
3250
3250
3250
3250
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
4.31
6.36
8.99
10.53
11.54
11.37
13.37
6.58
9.12
10.09
10.09
10.75
10.75
10.96
9.65
10.09
10.75
10.75
10.96
11.18
10.75
10.96
10.96
11.18
11.18
11.18
11.18
11.18
11.18
11.18
11.18
11.18
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
1.71
1.71
1.77
1.77
1.77
1.88
1.88
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
1.78
-
8.42
8.42
11.69
12.76
13.61
13.61
14.03
13.61
13.61
13.61
13.61
13.61
13.61
13.82
13.61
13.61
13.61
13.61
13.82
13.82
13.61
13.82
13.82
13.82
13.82
13.82
13.82
13.82
13.82
13.82
13.82
13.82
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Sound
Pressure
Sound
Power
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
• The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/WB=35/-°C
- 18 -
FILE NO. SVM-15074
<Heating / 240V> (Continued)
Power
supply
Operating
status
(V)
240
3 units
Indoor unit
Unit capacity
(kW)
A
B
C
A
B
C
07
10
13
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
10
13
16
18
22
24
13
16
18
22
24
16
18
22
24
13
16
18
22
24
16
18
22
24
16
18
22
07
07
07
07
07
07
07
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
10
10
10
10
10
10
13
13
13
13
13
16
16
16
16
13
13
13
13
13
16
16
16
16
16
16
16
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
13
13
13
13
13
13
13
13
13
16
16
16
2.70
3.53
4.28
4.49
4.68
5.02
5.34
3.18
3.80
4.01
4.20
4.55
4.87
3.50
3.71
3.90
4.24
4.56
3.57
3.76
4.14
4.47
2.97
3.42
3.63
3.81
4.15
4.48
3.18
3.38
3.56
3.94
4.26
3.26
3.45
3.82
4.14
2.97
3.16
3.34
3.71
4.03
3.09
3.27
3.60
3.92
3.00
3.18
3.50
2.70
2.38
2.31
2.20
2.11
1.94
1.78
3.18
3.04
2.92
2.80
2.60
2.41
3.50
3.37
3.25
3.03
2.82
3.57
3.45
3.26
3.04
2.97
2.74
2.64
2.54
2.37
2.21
3.18
3.07
2.97
2.81
2.63
3.26
3.16
3.00
2.81
2.97
2.87
2.78
2.65
2.49
3.09
3.00
2.83
2.66
3.00
2.91
2.75
2.70
2.38
2.31
2.20
2.11
1.94
1.78
2.14
2.05
1.97
1.89
1.75
1.62
1.89
1.82
1.75
1.63
1.52
1.75
1.69
1.60
1.49
2.97
2.74
2.64
2.54
2.37
2.21
2.54
2.46
2.37
2.25
2.11
2.37
2.30
2.18
2.05
2.97
2.87
2.78
2.65
2.49
2.81
2.73
2.57
2.42
3.00
2.91
2.75
Outdoor noise (dB)
Total
Heating capacity
Power consumption
Operating current
(kW)
(W)
(A)
8.1
8.3
8.9
8.9
8.9
8.9
8.9
8.5
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
9.0
9.0
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
8.9
9.0
9.0
8.9
8.9
9.0
9.0
8.9
8.9
8.9
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
-
10.8
10.8
10.8
10.8
11.0
11.0
11.0
10.8
10.8
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.2
11.2
10.8
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.2
11.2
11.0
11.0
11.2
11.2
11.0
11.0
11.0
11.2
11.2
11.2
11.2
11.2
11.2
11.2
11.2
11.2
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
1800
1900
2175
2175
2175
2175
2175
2000
2175
2175
2175
2175
2175
2175
2175
2175
2175
2175
2175
2175
2200
2200
2175
2175
2175
2175
2175
2175
2175
2175
2175
2200
2200
2175
2175
2200
2200
2175
2175
2175
2200
2200
2200
2200
2200
2200
2200
2200
2200
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
-
2750
2750
2750
2750
2830
2830
2830
2750
2750
2830
2830
2830
2830
2830
2830
2830
2830
2830
2830
2830
2900
2900
2750
2830
2830
2830
2830
2830
2830
2830
2830
2900
2900
2830
2830
2900
2900
2830
2830
2830
2900
2900
2900
2900
2900
2900
2900
2900
2900
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
7.89
8.33
9.54
9.54
9.54
9.54
9.54
8.77
9.54
9.54
9.54
9.54
9.54
9.54
9.54
9.54
9.54
9.54
9.54
9.54
9.65
9.65
9.54
9.54
9.54
9.54
9.54
9.54
9.54
9.54
9.54
9.65
9.65
9.54
9.54
9.65
9.65
9.54
9.54
9.54
9.65
9.65
9.65
9.65
9.65
9.65
9.65
9.65
9.65
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
1.98
-
11.69
11.69
11.69
11.69
12.03
12.03
12.03
11.69
11.69
12.03
12.03
12.03
12.03
12.03
12.03
12.03
12.03
12.03
12.03
12.03
12.33
12.33
11.69
12.03
12.03
12.03
12.03
12.03
12.03
12.03
12.03
12.33
12.33
12.03
12.03
12.33
12.33
12.03
12.03
12.03
12.33
12.33
12.33
12.33
12.33
12.33
12.33
12.33
12.33
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Sound
Pressure
Sound
Power
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
49
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
• The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/WB=35/-°C
- 19 -
FILE NO. SVM-15074
2-3-1. Operation Characteristic Curve
<Cooling>
<Heating>
20
20
• Conditions
Indoor
: DB27˚C/WB19˚C
Outdoor : DB35˚C
Air flow
: High
Pipe length : 5m × 5
3 units operating
16
Current (A)
14
12
220V
16
14
240V
10
230V
8
12
4
4
2
2
10
20
30
40
50
60
70
80
90
240V
230V
8
6
0
220V
10
6
0
• Conditions
Indoor
: DB20˚C
Outdoor : DB7˚C / WB6˚C
Air flow
: High
Pipe length : 5m × 5
3 units operating
18
Current (A)
18
0
100
0
10
Inverter output frequency (rps)
20
30
40
50
60
70
80
90
100
Inverter output frequency (rps)
2-3-2. Capacity Variation Ratio According to Outdoor Temperature
<Cooling>
<Heating>
120.0%
Current limited start
110.0%
100.0%
90.0%
80.0%
70.0%
60.0% • Conditions
Indoor
: DB27˚C/WB19˚C
Indoor air flow : High
Pipe length : 5m x 5
3 units operating
50.0%
40.0%
30.0%
20
23
26
29
32
Heating capacity ratio (%)
Cooling capacity ratio (%)
120.0%
110.0%
100.0%
90.0%
• Conditions
Indoor
: DB20˚C
Air flow
: High
Pipe length : 5m × 5
3 units operating
80.0%
70.0%
60.0%
50.0%
40.0%
35
38
41
30.0%
-20
44
-17
-14
Outdoor temp. (°C)
-11
-8
-5
-2
1
4
7
10
Outdoor temp. (°C)
2-3-3. Capacity Variation Ratio According to Pipe Length
<Cooling>
<Heating>
110
Standard pipe length 25m
105
Heating capacity ratio (%)
Coolimg capacity ratio (%)
110
100
95
90
• Conditions
Indoor
: DB27˚C/WB19˚C
Outdoor
: DB35˚C
Indoor air flow : High
4 units operating
85
80
0
10
20
30
40
50
60
70
100
95
90
Total pipe length (m)
• Conditions
Indoor
: DB20˚C
Outdoor
: DB7˚C/WB6˚C
Indoor air flow : High
4 units operating
85
80
80
Standard pipe length 25m
105
0
10
20
30
40
50
Total pipe length (m)
- 20 -
60
70
80
FILE NO. SVM-15074
3. REFRIGERANT R410A
This air conditioner adopts the new refrigerant HFC
(R410A) which does not damage the ozone layer.
The working pressure of the new refrigerant R410A
is 1.6 times higher than conventional refrigerant
(R22). The refrigerating oil is also changed in
accordance with change of refrigerant, so be careful
that water, dust, and existing refrigerant or refrigerating oil are not entered in the refrigerant cycle of
the air conditioner using the new refrigerant during
installation work or servicing time.
The next section describes the precautions for air
conditioner using the new refrigerant.
Conforming to contents of the next section together
with the general cautions included in this manual,
perform the correct and safe work.
6. When an air conditioning system charged with a
large volume of refrigerant is installed in a small
room, it is necessary to exercise care so that,
even when refrigerant leaks, its concentration
does not exceed the marginal level.
If the refrigerant gas leakage occurs and its
concentration exceeds the marginal level, an
oxygen starvation accident may result.
7. Be sure to carry out installation or removal
according to the installation manual.
Improper installation may cause refrigeration
trouble, water leakage, electric shock, fire, etc.
8. Unauthorized modifications to the air conditioner
may be dangerous.
If a breakdown occurs please call a qualified air
conditioner technician or electrician.
Improper repair may result in water leakage,
electric shock and fire, etc.
3-1. Safety During Installation/Servicing
As R410A’s pressure is about 1.6 times higher than
that of R22, improper installation/servicing may
cause a serious trouble. By using tools and materials exclusive for R410A, it is necessary to carry out
installation/servicing safely while taking the following precautions into consideration.
1. Never use refrigerant other than R410A in an air
conditioner which is designed to operate with
R410A. If other refrigerant than R410A is mixed,
pressure in the refrigeration cycle becomes
abnormally high, and it may cause personal
injury, etc. by a rupture.
2. Confirm the used refrigerant name, and use
tools and materials exclusive for the refrigerant
R410A. The refrigerant name R410A is indicated
on the visible place of the outdoor unit of the air
conditioner using R410A as refrigerant.
To prevent mischarging, the diameter of the
service port differs from that of R22.
3. If a refrigeration gas leakage occurs during
installation/servicing, be sure to ventilate fully.
If the refrigerant gas comes into contact with fire,
a poisonous gas may occur.
4. When installing or removing an air conditioner,
do not allow air or moisture to remain in the
refrigeration cycle.
Otherwise, pressure in the refrigeration cycle
may become abnormally high so that a rupture
or personal injury may be caused.
5. After completion of installation work, check to
make sure that there is no refrigeration gas
leakage. If the refrigerant gas leaks into the
room, coming into contact with fire in the fandriven heater, space heater, etc., a poisonous
gas may occur.
3-2. Refrigerant Piping Installation
3-2-1. Piping Materials and Joints Used
For the refrigerant piping installation, copper pipes
and joints are mainly used. Copper pipes and joints
suitable for the refrigerant must be chosen and
installed. Furthermore, it is necessary to use clean
copper pipes and joints whose interior surfaces are
less affected by contaminants.
1. Copper Pipes
It is necessary to use seamless copper pipes
which are made of either copper or copper alloy
and it is desirable that the amount of residual oil
is less than 40 mg/10 m.
Do not use copper pipes having a collapsed,
deformed or discolored portion (especially on the
interior surface).
Otherwise, the expansion valve or capillary tube
may become blocked with contaminants.
As an air conditioner using R410A incurs pressure higher than when using R22, it is necessary
to choose adequate materials.
Thicknesses of copper pipes used with R410A
are as shown in Table 3-2-1.
Never use copper pipes thinner than 0.8 mm
even when it is available on the market.
- 21 -
FILE NO. SVM-15074
Table 3-2-1 Thicknesses of annealed copper pipes
Thickness (mm)
Nominal diameter
Outer diameter (mm)
R410A
R22
1/4
6.35
0.80
0.80
3/8
9.52
0.80
0.80
1/2
12.70
0.80
0.80
5/8
15.88
1.00
1.00
2. Joints
For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants.
a) Flare Joints
Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds
20 mm. In such a case, socket joints can be used.
Sizes of flare pipe ends, flare joint ends and flare nuts are as shown in Tables 3-2-3 to 3-2-6 below.
b) Socket Joints
Socket joints are such that they are brazed for connections, and used mainly for thick pipings whose
diameter is larger than 20 mm.
Thicknesses of socket joints are as shown in Table 3-2-2.
Table 3-2-2 Minimum thicknesses of socket joints
Nominal diameter
Reference outer diameter of
copper pipe jointed (mm)
Minimum joint thickness
(mm)
1/4
6.35
0.50
3/8
9.52
0.60
1/2
12.70
0.70
5/8
15.88
0.80
3-2-2. Processing of Piping Materials
When performing the refrigerant piping installation, care should be taken to ensure that water or dust does not
enter the pipe interior, that no other oil than lubricating oils used in the installed air-water heat pump is used,
and that refrigerant does not leak.
When using lubricating oils in the piping processing, use such lubricating oils whose water content has been
removed. When stored, be sure to seal the container with an airtight cap or any other cover.
1. Flare processing procedures and precautions
a) Cutting the Pipe
By means of a pipe cutter, slowly cut the pipe so that it is not deformed.
b) Removing Burrs and Chips
If the flared section has chips or burrs, refrigerant leakage may occur.
Carefully remove all burrs and clean the cut surface before installation.
c) Insertion of Flare Nut
- 22 -
FILE NO. SVM-15074
d) Flare Processing
Make certain that a clamp bar and copper
pipe have been cleaned.
By means of the clamp bar, perform the flare
processing correctly.
Use either a flare tool for R410A or conventional flare tool.
Flare processing dimensions differ according
to the type of flare tool.
When using a conventional flare tool, be sure
to secure “dimension A” by using a gauge for
size adjustment.
ØD
A
Fig. 3-2-1 Flare processing dimensions
Table 3-2-3 Dimensions related to flare processing for R410A
A (mm)
Outer
diameter
(mm)
Thickness
(mm)
1/4
6.35
3/8
Nominal
diameter
Conventional flare tool
Flare tool for R410A
clutch type
Clutch type
Wing nut type
0.8
0 to 0.5
1.0 to 1.5
1.5 to 2.0
9.52
0.8
0 to 0.5
1.0 to 1.5
1.5 to 2.0
1/2
12.70
0.8
0 to 0.5
1.0 to 1.5
2.0 to 2.5
5/8
15.88
1.0
0 to 0.5
1.0 to 1.5
2.0 to 2.5
Table 3-2-4 Dimensions related to flare processing for R22
A (mm)
Outer
diameter
(mm)
Thickness
(mm)
1/4
6.35
3/8
Nominal
diameter
Conventional flare tool
Flare tool for R22
clutch type
Clutch type
Wing nut type
0.8
0 to 0.5
0.5 to 1.0
1.0 to 1.5
9.52
0.8
0 to 0.5
0.5 to 1.0
1.0 to 1.5
1/2
12.70
0.8
0 to 0.5
0.5 to 1.0
1.5 to 2.0
5/8
15.88
1.0
0 to 0.5
0.5 to 1.0
1.5 to 2.0
Table 3-2-5 Flare and flare nut dimensions for R410A
Dimension (mm)
Nominal
diameter
Outer diameter
(mm)
Thickness
(mm)
A
B
C
D
Flare nut width
(mm)
1/4
6.35
0.8
9.1
9.2
6.5
13
17
3/8
9.52
0.8
13.2
13.5
9.7
20
22
1/2
12.70
0.8
16.0
16.6
12.9
23
26
5/8
15.88
1.0
19.0
19.7
16.0
25
29
- 23 -
FILE NO. SVM-15074
Table 3-2-6 Flare and flare nut dimensions for R22
Dimension (mm)
Nominal
diameter
Outer diameter
(mm)
Thickness
(mm)
A
B
C
D
Flare nut width
(mm)
1/4
6.35
0.8
9.0
9.2
6.5
13
17
3/8
9.52
0.8
13.0
13.5
9.7
20
22
1/2
12.70
0.8
16.0
16.2
12.9
20
24
5/8
15.88
1.0
19.0
19.7
16.0
23
27
3/4
19.05
1.0
23.3
24.0
19.2
34
36
45˚
6˚
to 4
B
A
C
43˚
D
to 4
5˚
Fig. 3-2-2 Relations between flare nut and flare seal surface
2. Flare Connecting Procedures and Precautions
a) Make sure that the flare and union portions do not have any scar or dust, etc.
b) Correctly align the processed flare surface with the union axis.
c) Tighten the flare with designated torque by means of a torque wrench.
The tightening torque for R410A is the same as that for conventional R22.
Incidentally, when the torque is weak, the gas leakage may occur.
When it is strong, the flare nut may crack and may be made non-removable. When choosing the
tightening torque, comply with values designated by manufacturers. Table 3-2-7 shows reference values.
NOTE :
When applying oil to the flare surface, be sure to use oil designated by the manufacturer.
If any other oil is used, the lubricating oils may deteriorate and cause the compressor to burn out.
Table 3-2-7 Tightening torque of flare for R410A [Reference values]
Nominal
diameter
Outer diameter
(mm)
Tightening torque
N•m (kgf•cm)
Tightening torque of torque
wrenches available on the market
N•m (kgf•cm)
1/4
6.35
14 to 18 (140 to 180)
16 (160), 18 (180)
3/8
9.52
33 to 42 (330 to 420)
42 (420)
1/2
12.70
50 to 62 (500 to 620)
55 (550)
5/8
15.88
63 to 77 (630 to 770)
65 (650)
- 24 -
FILE NO. SVM-15074
3-3. Tools
3-3-1. Required Tools
The service port diameter of packed valve of the outdoor unit in the air-water heat pump using R410A is
changed to prevent mixing of other refrigerant.
To reinforce the pressure-resisting strength, flare processing dimensions and opposite side dimension of flare
nut (For Ø12.7 copper pipe) of the refrigerant piping are lengthened.
The used refrigerating oil is changed, and mixing of oil may cause a trouble such as generation of sludge,
clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types.
1. Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))
2. Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)
3. Tools commonly used for R410A and for conventional refrigerant (R22)
The table below shows the tools exclusive for R410A and their interchangeability.
Tools exclusive for R410A (The following tools for R410A are required.)
Tools whose specifications are changed for R410A and their interchangeability
R410A
air-water heat pump installation
No.
Used tool
Usage
Conventional air-water
heat pump installation
Existence of
new equipment
for R410A
Whether conventional
equipment can be
used
Whether new equipment
can be used with
conventional refrigerant
1
Flare tool
Pipe flaring
Yes
∗ (Note 1)
Yes
2
Copper pipe gauge for
adjusting projection margin
Flaring by
conventional flare tool
Yes
∗ (Note 1)
∗ (Note 1)
3
Torque wrench
(For Ø12.7)
Connection of flare nut
Yes
No
No
4
Gauge manifold
5
Charge hose
Evacuating, refrigerant
charge, run check, etc.
Yes
No
No
6
Vacuum pump adapter
Vacuum evacuating
Yes
No
Yes
7
Electronic balance for
refrigerant charging
Refrigerant charge
Yes
No
Yes
8
Refrigerant cylinder
Refrigerant charge
Yes
No
No
9
Leakage detector
Gas leakage check
Yes
No
Yes
10
Charging cylinder
Refrigerant charge
(Note 2)
No
No
(Note 1) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection
margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.
(Note 2) Charging cylinder for R410A is being currently developed.
General tools (Conventional tools can be used.)
In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary as
the general tools.
1. Vacuum pump
7. Screwdriver (+, –)
Use vacuum pump by attaching vacuum pump adapter.
8. Spanner or Monkey wrench
2. Torque wrench (For Ø6.35, Ø9.52)
9. Hole core drill (Ø65)
3. Pipe cutter
10. Hexagon wrench (Opposite side 4mm)
4. Reamer
11. Tape measure
5. Pipe bender
12. Metal saw
6. Level vial
Also prepare the following equipments for other installation method and run check.
1. Clamp meter
3. Insulation resistance tester
2. Thermometer
4. Electroscope
- 25 -
FILE NO. SVM-15074
3-4. Recharging of Refrigerant
When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the
following steps.
Recover the refrigerant, and check no refrigerant
remains in the equipment.
When the compound gauge’s pointer has indicated
–0.1 Mpa (–76 cmHg), place the handle Low in the
fully closed position, and turn off the vacuum pump’s
power switch.
Connect the charge hose to packed valve service port
at the outdoor unit’s gas side.
Keep the status as it is for 1 to 2 minutes, and ensure
that the compound gauge’s pointer does not return.
Connect the charge hose to the vacuum pump adapter.
Set the refrigerant cylinder to the electronic balance,
connect the connecting hose to the cylinder and the
connecting port of the electronic balance, and charge
liquid refrigerant.
Open fully both packed valves at liquid and gas sides.
Place the handle of the gauge manifold Low in the
fully opened position, and turn on the vacuum pump’s
power switch.
(For refrigerant charging, see the figure below.)
Then, evacuating the refrigerant in the cycle.
CAUTION
1. Never charge refrigerant exceeding the specified amount.
2. If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bit in COOL mode.
3. Do not carry out additional charging.
When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the
refrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the specified
amount is charged, and working pressure in the refrigeration cycle becomes abnormally high pressure, and
may cause a rupture or personal injury.
(Indoor unit)
(Outdoor unit)
Opened
Refrigerant cylinder
(with siphon)
Check valve
Opened
Opened
Open/close
valve for charging
Closed
Service port
Electronic balance for refrigerant charging
Fig. 3-4-1 Configuration of refrigerant charging
- 26 -
FILE NO. SVM-15074
1. Be sure to make setting so that liquid can be charged.
2. When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.
It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant.
Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the
cylinder upside down if cylinder is not equipped with siphon.
[ Cylinder with siphon ]
[ Cylinder without siphon ]
Gauge manifold
Gauge manifold
OUTDOOR unit
OUTDOOR unit
Refrigerant
cylinder
Refrigerant
cylinder
Electronic
balance
Electronic
balance
Siphon
R410A refrigerant is HFC mixed refrigerant.
Therefore, if it is charged with gas, the
composition of the charged refrigerant changes
and the characteristics of the equipment varies.
Fig. 3-4-2
3-5. Brazing of Pipes
3-5-1. Materials for Brazing
1. Silver brazing filler
Silver brazing filler is an alloy mainly composed
of silver and copper.
It is used to join iron, copper or copper alloy,
and is relatively expensive though it excels in
solderability.
2. Phosphor bronze brazing filler
Phosphor bronze brazing filler is generally
used to join copper or copper alloy.
3. Low temperature brazing filler
Low temperature brazing filler is generally
called solder, and is an alloy of tin and lead.
Since it is weak in adhesive strength, do not
use it for refrigerant pipes.
1. Phosphor bronze brazing filler tends to react with
sulfur and produce a fragile compound water
solution, which may cause a gas leakage.
Therefore, use any other type of brazing filler at a hot
spring resort, etc., and coat the surface with a paint.
2. When performing brazing again at time of servicing,
use the same type of brazing filler.
3-5-2. Flux
1. Reason why flux is necessary
• By removing the oxide film and any foreign matter
on the metal surface, it assists the flow of brazing
filler.
• In the brazing process, it prevents the metal
surface from being oxidized.
• By reducing the brazing filler’s surface tension,
the brazing filler adheres better to the treated metal.
- 27 -
FILE NO. SVM-15074
3-5-3. Brazing
2. Characteristics required for flux
• Activated temperature of flux coincides with
the brazing temperature.
• Due to a wide effective temperature range, flux
is hard to carbonize.
• It is easy to remove slag after brazing.
• The corrosive action to the treated metal and
brazing filler is minimum.
• It excels in coating performance and is harmless to the human body.
As the flux works in a complicated manner as
described above, it is necessary to select an
adequate type of flux according to the type and
shape of treated metal, type of brazing filler and
brazing method, etc.
As brazing work requires sophisticated techniques,
experiences based upon a theoretical knowledge, it
must be performed by a person qualified.
In order to prevent the oxide film from occurring in
the pipe interior during brazing, it is effective to
proceed with brazing while letting dry Nitrogen gas
(N2) flow.
Never use gas other than Nitrogen gas.
1. Brazing method to prevent oxidation
1) Attach a reducing valve and a flow-meter to
the Nitrogen gas cylinder.
2) Use a copper pipe to direct the piping material, and attach a flow-meter to the cylinder.
3) Apply a seal onto the clearance between the
piping material and inserted copper pipe for
Nitrogen in order to prevent backflow of the
Nitrogen gas.
4) When the Nitrogen gas is flowing, be sure to
keep the piping end open.
5) Adjust the flow rate of Nitrogen gas so that it
is lower than 0.05 m3/Hr or 0.02 MPa
(0.2kgf/cm2) by means of the reducing valve.
6) After performing the steps above, keep the
Nitrogen gas flowing until the pipe cools
down to a certain extent (temperature at
which pipes are touchable with hands).
7) Remove the flux completely after brazing.
3. Types of flux
• Noncorrosive flux
Generally, it is a compound of borax and boric
acid. It is effective in case where the brazing
temperature is higher than 800°C.
• Activated flux
Most of fluxes generally used for silver brazing
are this type.
It features an increased oxide film removing
capability due to the addition of compounds
such as potassium fluoride, potassium chloride
and sodium fluoride to the borax-boric acid
compound.
4. Piping materials for brazing and used
brazing filler/flux
Piping material
Used brazing filler
Used flux
Copper - Copper
Phosphor copper
Do not use
Copper - Iron
Silver
Paste flux
Iron - Iron
Silver
Vapor flux
M Flow meter
Stop valve
1. Do not enter flux into the refrigeration cycle.
2. When chlorine contained in the flux remains
within the pipe, the lubricating oil deteriorates.
Therefore, use a flux which does not contain
chlorine.
3. When adding water to the flux, use water which
does not contain chlorine
(e.g. distilled water or ion-exchange water).
4. Remove the flux after brazing.
Nitrogen gas
cylinder
From Nitrogen cylinder
Pipe
Nitrogen
gas
Rubber plug
Fig. 3-5-1 Prevention of oxidation during brazing
- 28 -
FILE NO. SVM-15074
4. CONSTRUCTION VIEWS
4-1. Outdoor Unit
RAS-3M26S3AV-E, -A, -TR
A leg part
600
150
Anchor bolt long hole pitch
365
17.5
2-dia.12×17 U-sharp hole
(for dia.8-10 anchor bolt)
17.5
2-dia.12×17 long hole B leg part
(for dia.8-10 anchor bolt)
900
320
30
52
550
CL
dia
Fan guard
.55
1
534
581
890
Hanger
Liquid valve
Connecting pipe port:
Connecting pipe dia.6.35
Service part
Connecting pipe dia.9.52
Connecting pipe dia.6.35
Connecting pipe dia.12.7
Connecting pipe dia.6.35
Connecting pipe dia.12.7
193
157
165
148
178
518
34.5
80
87
72.5
380
5-drain long hole
dia.20×88
83
11
600
56.5
12
191
65
74
67
Mounting hole sold separately
12-dia.3 emboss
178
40
2.5
327
178
11
60
68
116
400
71
2-R
365
Knock out
10
R6
Outside line
of product
Detailed A leg part
Drain hole
dia.25
Fin guard
Outside line
of product
365
260
R6
40
17
Outdoor
air temperature sensor
34
375
250
45
24
438
Gas valve
12
56.5
600
Detailed B leg part
94.2 52 52 52 52 52
Hanger
- 29 -
C unit
B unit
A unit
5. WIRING DIAGRAM
5-1. Outdoor Unit
RAS-3M26S3AV-A
- 30 -
FILE NO. SVM-15074
FILE NO. SVM-15074
5-2. Outdoor Unit
RAS-3M26S3AV-E, -TR
- 31 -
FILE NO. SVM-15074
5-3. Outdoor Unit
RAS-3M26S3AV-A
Wiring between DRED (Demand response enabling device) and Outdoor Unit
This model supports DRM1 DRM2 DRM3.
AS/NZS 4755
DRM1
DRM2
DRM3
■ Important notice
• Install in accordance with the wiring rules (AS/NZS 3000).
• The precautions described below include important items regarding safety.
Observe them without fail.
• The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual.
WARNING
• Turn off the main power supply switch or breaker before attempting installation.
Make sure all power switches are off. Failure to do so may cause electric shock.
• Connect the connecting wire correctly.
If the connecting wire is incorrect, electric parts may be damaged.
• Ensure that all terminals are securely fixed, so preventing any external forces having a negative
effect on the terminals.
• Do not connect the DRED mains cable to the terminal block of the outdoor unit
(Power supply and Indoor/Outdoor connecting).
Improper installation may result in fire.
• Connect the demand connecting wires and relay connector (RJ45) so that they do not come
into contact with the refrigerant cycle parts or refrigerant pipes.
Wire breakage or water intrusion may cause electric shock or fire.
• Do not screw the DRED signal receiver directly to the outdoor unit.
The screw may damage the internal parts and cause an electric shock, fire or refrigerant leak.
CAUTION
• Wear heavy gloves during the installation work to avoid injury.
■ Connection procedure
• This air conditioner complies with AS/NZS 4755.3.1.
• DRM available: DRM1, DRM2, DRM3
• The terminal block meets ELV requirements.
WARNING
• Do not connect the DRED mains cable to
the terminal block of the outdoor unit
(Power supply and Indoor/Outdoor
connecting). Improper installation may
result in fire.
Demand response interface
CN101
Transformer
CN100
MCC-1653
Outdoor control
P.C. board
CN102
CN105
COM DRM1 DRM2 DRM3
• For the power supply of the DRED,
prepare exclusive power supply
separated from that of the outdoor unit.
COM DRM1 DRM2 DRM3
Locally procured
COM DRM1 DRM2 DRM3
- 32 -
N
Power supply
DRED
WARNING
Connect the wire (4-wire) with a round
terminal to the Demand section (COM,
DRM1, DRM2, DRM3) on the terminal block.
L
1 2 3
Indoor (A~C) unit
Connecting
FILE NO. SVM-15074
Air conditioner demand response
Demand response mode
Description
DRM1
Compressor off
DRM2
E30m ≤ R × 0.50 × 0.5
DRM3
E30m ≤ R × 0.75 × 0.5
*1: E30m = total electrical energy (kWh) used by the air conditioner for all purposes (including compressors, controls and fans) over a 30 min period.
**2:
= rated input electrical power of the air conditioner (kW) at rated capacity in the mode in which it is operating during the demand response event
(i.e.cooling or heating).
■ Wiring procedure
1. Securely fasten the demand connecting wires with the cord clamp located at the upper portion of the terminal block so that no external force is applied to the
terminal.
* The demand connecting wires having a relay connector (RJ45) should be wired in such a manner as to prevent water intrusion into the relay connector.
2. Bundle the demand connecting wires with indoor/outdoor connecting wires using a fixing band (locally procured).
Cord clamp
DRED terminal block connections
Banding band
- 33 -
FILE NO. SVM-15074
6. SPECIFICATIONS OF ELECTRICAL PARTS
6-1. Outdoor Unit
RAS-3M26S3AV-E, -A, -TR
Parts name
No.
Model name
Rating
DA220A2T-20LD
—
1
Compressor
2
Outdoor fan motor
3
Reactor
CH-56-3Z-T
5.8 mH, 18.5 A
4
Reactor
CH-76-TM1
9.9 mH, 1 A
5
4-way valve coil
6
PMV coil
UKV-A039
DC 12 V
7
P.C. board (Main PCB)
MCC-1571
AC 220–240 V
8
P.C. board (Control PCB)
MCC-5071
AC 220–240 V
9
P.C. board (Fan motor connection)
MCC-1436
AC 220–240V
10
Fuse (Mounted on P.C. board MCC-1571)
—
AC 250V, 25 A
11
Fuse (Mounted on P.C. board MCC-1571)
—
AC 250V, 10 A
12
Fuse (Mounted on P.C. board MCC-1571, MCC-5071)
—
AC 250V, 3.15 A
13
Outdoor temp. sensor (TO sensor)
—
10 kΩ (25°C)
14
Evaporator temp. sensor (Te sensor)
—
10 kΩ (25°C)
15
Discharge temp. sensor (Td sensor)
—
50 kΩ (25°C)
16
Suction temp. sensor (Ts sensor)
—
10 kΩ (25°C)
17
Temp. sensor at A room gas side (TGa-sensor)
—
10 kΩ (25°C)
18
Temp. sensor at B room gas side (TGb-sensor)
—
10 kΩ (25°C)
19
Temp. sensor at C room gas side (TGc-sensor)
—
10 kΩ (25°C)
20
Compressor thermo.
CS-12AL
21
Terminal block (9P)
—
ICF-280-A60-1
5TF-H01AP1874A1
- 34 -
Output 60 W
AC 200–240 V
ON: 90°C, OFF: 125°C
AC 250 V, 20 A
FILE NO. SVM-15074
7. REFRIGERANT CYCLE DIAGRAM
High Pressure switch
tank 1500cc
DA220A2T-20LD
∅2 -∅3 , 450Lx2
∅2 -∅3 , 550Lx1
∅2 -∅3 , 600Lx1
2.40kg (R410A)
Outdoor unit
NOTE :
• You need not add refrigerant if the piping length is 40m or less.
• If the length exceeds 41m, add 20g of refrigerant per 1 meter over.
• Connection of only one indoor unit is unavailable. Two or more indoor units should be connected.
- 35 -
FILE NO. SVM-15074
7-2. Operation Data
Outdoor Unit: RAS-3M26S3AV-E, -A, -TR
<Cooling>
Temperature condition
Indoor
Outdoor
Heat exchanger
pipe temperature
A
B
C
P (MP)
T1 (ºC)
T2 (ºC)
1 unit
07
-
-
0.9 to 1.1
15 to 17
10
-
-
0.8 to 1.0
2 units
27/19
Standard
pressure
No. of
operating
units
35/-
3 units
Indoor unit
Compressor
revolution
(rps)
Indoor fan
Outdoor fan
36 to 42
High
LOW
15.6
12 to 14
36 to 42
High
MED
23.3
13
-
-
0.7 to 0.9
10 to 12
36 to 44
High
MED
36.5
16
-
-
0.6 to 0.8
9 to 11
36 to 46
High
MED
50.3
18
-
-
0.6 to 0.8
10 to 12
36 to 47
High
High
52.1
22
-
-
0.6 to 0.8
8 to 10
36 to 47
High
High
52.7
24
-
-
0.6 to 0.8
8 to 10
36 to 47
High
High
70.0
07
07
-
0.8 to 1.0
10 to 12
47 to 49
High
MED
42.5
10
07
-
0.8 to 1.0
10 to 12
47 to 49
High
MED
42.5
13
07
-
0.8 to 1.0
10 to 12
47 to 49
High
MED
45.8
16
07
-
0.8 to 1.0
10 to 12
47 to 49
High
MED
49.1
18
07
-
0.8 to 1.0
10 to 12
47 to 49
High
High
52.3
22
07
-
0.8 to 1.0
10 to 12
49 to 51
High
High
55.6
24
07
-
0.7 to 0.9
9 to 11
51 to 53
High
High
58.9
10
10
-
0.8 to 1.0
10 to 12
47 to 49
High
MED
42.5
13
10
-
0.8 to 1.0
10 to 12
47 to 49
High
MED
49.1
16
10
-
0.8 to 1.0
10 to 12
49 to 51
High
High
52.3
18
10
-
0.8 to 1.0
10 to 12
49 to 51
High
High
55.6
22
10
-
0.7 to 0.9
9 to 11
51 to 53
High
High
58.9
24
10
-
0.7 to 0.9
9 to 11
51 to 53
High
High
62.2
13
13
-
0.8 to 1.0
10 to 12
47 to 49
High
High
55.6
16
13
-
0.7 to 0.9
9 to 11
51 to 53
High
High
58.9
18
13
-
0.7 to 0.9
9 to 11
51 to 53
High
High
62.2
22
13
-
0.7 to 0.9
9 to 11
51 to 53
High
High
62.2
24
13
-
0.7 to 0.9
9 to 11
51 to 53
High
High
62.2
16
16
-
0.7 to 0.9
9 to 11
52 to 54
High
High
62.2
18
16
-
0.7 to 0.9
9 to 11
52 to 54
High
High
62.2
22
16
-
0.7 to 0.9
9 to 11
52 to 54
High
High
62.2
24
16
-
0.7 to 0.9
9 to 11
52 to 54
High
High
62.2
18
18
-
0.7 to 0.9
9 to 11
52 to 54
High
High
62.2
22
18
-
0.7 to 0.9
9 to 11
52 to 54
High
High
62.2
24
18
-
0.7 to 0.9
9 to 11
52 to 54
High
High
62.2
07
07
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
10
07
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
13
07
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
16
07
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
18
07
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
22
07
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
24
07
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
10
10
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
13
10
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
16
10
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
18
10
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
22
10
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
24
10
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
13
13
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
16
13
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
18
13
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
22
13
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
24
13
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
16
16
07
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
NOTES:
1. Measure surface temperature of heat exchanger pipe around of heat exchanger path U bent. (Thermistor
thermometer)
2. Connecting piping condition : 5 meters × 3 units (5 m / each indoor unit)
- 36 -
FILE NO. SVM-15074
<Cooling> (Continued)
Temperature condition
Indoor
27/19
Outdoor
35/-
Standard
pressure
Heat exchanger
pipe temperature
No. of
operating
units
Indoor fan
Outdoor fan
Compressor
revolution
(rps)
A
B
C
P (MP)
T1 (ºC)
T2 (ºC)
3 units
18
16
07
0.8 to 1.0
11 to 13
51 to 53
22
16
07
0.8 to 1.0
High
High
59.8
11 to 13
51 to 53
High
High
24
16
07
59.8
0.8 to 1.0
11 to 13
51 to 53
High
High
10
10
59.8
10
0.8 to 1.0
11 to 13
51 to 53
High
High
13
59.8
10
10
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
16
10
10
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
18
10
10
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
22
10
10
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
24
10
10
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
13
13
10
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
16
13
10
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
18
13
10
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
22
13
10
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
24
13
10
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
16
16
10
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
18
16
10
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
22
16
10
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
24
16
10
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
13
13
13
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
16
13
13
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
18
13
13
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
22
13
13
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
24
13
13
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
16
16
13
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
18
16
13
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
22
16
13
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
24
16
13
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
16
16
16
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
18
16
16
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
22
16
16
0.8 to 1.0
11 to 13
51 to 53
High
High
59.8
Indoor unit
NOTES:
1. Measure surface temperature of heat exchanger pipe around of heat exchanger path U bent. (Thermistor
thermometer)
2. Connecting piping condition : 5 meters × 3 units (5 m / each indoor unit)
- 37 -
FILE NO. SVM-15074
Outdoor Unit : RAS-3M26S3AV-E, -A, -TR
<Heating>
Temperature condition
Indoor
Outdoor
Heat exchanger
pipe temperature
Indoor fan
Outdoor fan
Compressor
revolution
(rps)
3 to 5
High
MED
29.9
2 to 4
High
High
44.3
52 to 54
2 to 4
High
High
53.9
3.6 to 3.9
53 to 55
2 to 4
High
High
55.6
-
3.6 to 3.9
53 to 55
2 to 4
High
High
59.8
-
-
3.6 to 3.9
53 to 55
2 to 4
High
High
67.6
24
-
-
3.6 to 3.9
53 to 55
2 to 4
High
High
78.4
07
07
-
2.8 to 3.0
45 to 47
0 to 2
High
High
62.2
A
B
C
P (MP)
T1 (ºC)
T2 (ºC)
1 unit
07
-
-
2.1 to 2.3
36 to 38
10
-
-
2.7 to 2.9
44 to 46
13
-
-
3.2 to 3.4
16
-
-
18
-
22
2 units
20/-
Standard
pressure
No. of
operating
units
7/6
3 units
Indoor unit
10
07
-
2.8 to 3.0
45 to 47
0 to 2
High
High
62.2
13
07
-
2.8 to 3.0
45 to 47
0 to 2
High
High
63.7
16
07
-
2.8 to 3.0
45 to 47
0 to 2
High
High
65.2
18
07
-
2.9 to 3.1
46 to 48
0 to 2
High
High
66.7
22
07
-
2.9 to 3.1
46 to 48
0 to 2
High
High
68.2
24
07
-
3.0 to 3.2
47 to 49
-1 to 1
High
High
69.7
10
10
-
2.8 to 3.0
45 to 47
0 to 2
High
High
62.2
13
10
-
2.8 to 3.0
45 to 47
0 to 2
High
High
65.2
16
10
-
2.9 to 3.1
46 to 48
0 to 2
High
High
66.7
18
10
-
2.9 to 3.1
46 to 48
0 to 2
High
High
68.2
22
10
-
3.0 to 3.2
47 to 49
-1 to 1
High
High
69.7
24
10
-
3.1 to 3.3
48 to 50
-1 to 1
High
High
71.2
68.2
13
13
-
2.8 to 3.0
45 to 47
0 to 2
High
High
16
13
-
3.0 to 3.2
47 to 49
-1 to 1
High
High
69.7
18
13
-
3.1 to 3.3
48 to 50
-1 to 1
High
High
71.2
22
13
-
3.1 to 3.3
48 to 50
-1 to 1
High
High
71.2
24
13
-
3.1 to 3.3
48 to 50
-1 to 1
High
High
71.2
16
16
-
3.1 to 3.3
48 to 50
-1 to 1
High
High
71.2
18
16
-
3.1 to 3.3
48 to 50
-1 to 1
High
High
71.2
22
16
-
3.1 to 3.3
48 to 50
-1 to 1
High
High
71.2
24
16
-
3.1 to 3.3
48 to 50
-1 to 1
High
High
71.2
18
18
-
3.1 to 3.3
48 to 50
-1 to 1
High
High
71.2
22
18
-
3.1 to 3.3
48 to 50
-1 to 1
High
High
71.2
24
18
-
3.1 to 3.3
48 to 50
-1 to 1
High
High
71.2
07
07
07
2.3 to 2.5
38 to 40
-1 to 1
High
High
71.8
10
07
07
2.3 to 2.5
38 to 40
-1 to 1
High
High
71.8
13
07
07
2.3 to 2.5
38 to 40
-1 to 1
High
High
71.8
16
07
07
2.3 to 2.5
38 to 40
-1 to 1
High
High
72.0
18
07
07
2.3 to 2.5
38 to 40
-1 to 1
High
High
72.2
22
07
07
2.3 to 2.5
38 to 40
-1 to 1
High
High
72.4
24
07
07
2.3 to 2.5
38 to 40
-1 to 1
High
High
72.6
10
10
07
2.3 to 2.5
38 to 40
-1 to 1
High
High
71.8
13
10
07
2.3 to 2.5
38 to 40
-1 to 1
High
High
72.0
16
10
07
2.3 to 2.5
38 to 40
-1 to 1
High
High
72.2
18
10
07
2.5 to 2.7
37 to 39
-2 to 0
High
High
72.4
22
10
07
2.3 to 2.5
38 to 40
-1 to 1
High
High
72.6
24
10
07
2.3 to 2.5
38 to 40
-1 to 1
High
High
72.8
13
13
07
2.5 to 2.7
37 to 39
-2 to 0
High
High
72.4
16
13
07
2.5 to 2.7
37 to 39
-2 to 0
High
High
72.6
18
13
07
2.5 to 2.7
37 to 39
-2 to 0
High
High
72.8
22
13
07
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
24
13
07
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
16
16
07
2.5 to 2.7
37 to 39
-2 to 0
High
High
72.8
18
16
07
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
NOTES:
1. Measure surface temperature of heat exchanger pipe around of heat exchanger path U bent. (Thermistor
thermometer)
2. Connecting piping condition : 5 meters × 3 units (5 m / each indoor unit)
- 38 -
FILE NO. SVM-15074
<Heating> (Continued)
Temperature condition
Indoor
20/-
Outdoor
7/6
Standard
pressure
Heat exchanger
pipe temperature
No. of
operating
units
Indoor fan
Outdoor fan
Compressor
revolution
(rps)
A
B
C
P (MP)
T1 (ºC)
T2 (ºC)
3 units
22
16
07
2.5 to 2.7
37 to 39
24
16
07
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
-2 to 0
High
High
10
10
10
2.3 to 2.5
73.0
38 to 40
-1 to 1
High
High
13
10
10
71.8
2.3 to 2.5
38 to 40
-1 to 1
High
High
16
10
72.2
10
2.5 to 2.7
37 to 39
-2 to 0
High
High
18
72.4
10
10
2.5 to 2.7
37 to 39
-2 to 0
High
High
72.6
22
10
10
2.5 to 2.7
37 to 39
-2 to 0
High
High
72.8
24
10
10
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
13
13
10
2.5 to 2.7
37 to 39
-2 to 0
High
High
72.6
16
13
10
2.5 to 2.7
37 to 39
-2 to 0
High
High
72.8
18
13
10
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
22
13
10
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
24
13
10
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
16
16
10
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
18
16
10
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
22
16
10
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
24
16
10
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
13
13
13
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
16
13
13
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
18
13
13
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
22
13
13
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
24
13
13
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
16
16
13
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
18
16
13
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
22
16
13
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
24
16
13
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
16
16
16
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
18
16
16
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
22
16
16
2.5 to 2.7
37 to 39
-2 to 0
High
High
73.0
Indoor unit
NOTES:
1. Measure surface temperature of heat exchanger pipe around of heat exchanger path U bent. (Thermistor
thermometer)
2. Connecting piping condition : 5 meters × 3 units (5 m / each indoor unit)
- 39 -
8. CONTROL BLOCK DIAGRAM
FILE NO. SVM-15074
8-1. Outdoor Unit (Inverter Assembly)
RAS-3M26S3AV-A
Outdoor air temp. sensor
Gas side pipe temp. sensor
Suction temp. sensor
Evaporator temp. sensor
Discharge temp. sensor
MCC-5071 (CONTROL P.C. B)
A unit P.M.V.
M.C.U
B unit P.M.V.
C unit P.M.V.
Driver
circuit of
P.M.V.
Function
select
MCC-1653
(Demand P.C.B)
A unit serial signal
communication circuit
• Inverter outdoor frequency control
• A/D converter function
• P.M.V. control
• Processing (Temp. processing)
• Error display
• Serial signal communication with indoor unit
• Signal communication with main P.C. board
• Function select
B unit serial signal
communication circuit
C unit serial signal
communication circuit
Clock frequency
oscillator circuit
20 MHz
Demand
signal
Signal communication
Converter
(AC → DC)
220 ⎯ 240V ~50Hz
220V ~60Hz
MCC-1571 (MAIN P.C. B)
Transformer
Noise filter
M.C.U 2
M.C.U 1
Input current
sensor
High power factor
correction circuit
Converter
(AC → DC)
• PWM synthesis function
• Input current release control
• IPM over current detect control
• High power factor correction control
• Signal communication with
control P.C. board
• Fan motor control
• Compressor motor control
• High pressure protective operation.
• Case thermostat operation.
• Signal communication with
control P.C. board
• 4-way valve control
Clock frequency
oscillator circuit
8 MHz
High-pressure switch
Case thermo
Relay circuit
Inverter
(DC → AC)
Output current
sensor
Gate drive
circuit
Inverter
(DC→AC)
Gate drive
circuit
Clock frequency
oscillator circuit
20 MHz
Output current
sensor
4-way valve
Compressor
Outdoor
fan motor
- 40 -
P.M.V : Pulse motor valve
PWM : Pulse width modulation
IPM : Intelligent power module
FILE NO. SVM-15074
8-2. Outdoor Unit (Inverter Assembly)
RAS-3M26S3AV-E, -TR
Outdoor air temp. sensor
Gas side pipe temp. sensor
Suction temp. sensor
Evaporator temp. sensor
Discharge temp. sensor
MCC-5071 (CONTROL P.C. B)
A unit P.M.V.
M.C.U
B unit P.M.V.
C unit P.M.V.
Driver
circuit of
P.M.V.
•
•
•
•
•
•
•
•
A unit serial signal
communication circuit
Inverter outdoor frequency control
A/D converter function
P.M.V. control
Processing (Temp. processing)
Error display
Serial signal communication with indoor unit
Signal communication with main P.C. board
Function select
Function select
B unit serial signal
communication circuit
C unit serial signal
communication circuit
Clock frequency
oscillator circuit
20 MHz
Signal communication
220–240V ~50Hz
220V ~60Hz
MCC-1571 (MAIN P.C. B)
Noise filter
M.C.U 1
•
•
•
•
•
Input current
sensor
High power factor
correction circuit
Converter
(AC → DC)
•
•
•
•
PWM synthesis function
Input current release control
IPM over current detect control
High power factor correction control
Signal communication with
control P.C. board
Fan motor control
Compressor motor control
High pressure protective operation.
Case thermostat operation.
M.C.U 2
• Signal communication with
control P.C. board
• 4-way valve control
Clock frequency
oscillator circuit
8 MHz
High-pressure switch
Case thermo
Relay circuit
Inverter
(DC → AC)
Gate drive
circuit
Inverter
(DC → AC)
Output current
sensor
Output current
sensor
Compressor
Outdoor
fan motor
- 41 -
Gate drive
circuit
Clock frequency
oscillator circuit
20 MHz
P.M.V : Pulse motor valve
PWM : Pulse width modulation
IPM : Intelligent power module
4-way valve
FILE NO. SVM-15074
9. OPERATION DESCRIPTION
9-1. Outline of Air Conditioner Control
This air conditioner is a capacity-variable type air
conditioner, which uses DC motor for the indoor fan
motor and the outdoor fan motor. And the capacityproportional control compressor which can change the
motor speed in the range from 12 to 100 rps is mounted.
The DC motor drive circuit is mounted to the indoor
unit. The compressor and the inverter to control fan
motor are mounted to the outdoor unit.
The entire air conditioner is mainly controlled by the
indoor unit controller.
The indoor unit controller drives the indoor fan motor
based upon command sent from the remote controller,
and transfers the operation command to the outdoor
unit controller.
The outdoor unit controller receives operation
command from the indoor unit side, and controls the
outdoor fan and the pulse motor valve. (PMV)
Besides, detecting revolution position of the
compressor motor, the outdoor unit controller controls
speed of the compressor motor by controlling output
voltage of the inverter and switching timing of the
supply power (current transfer timing) so that motors
drive according to the operation command.
And then, the outdoor unit controller transfers reversely
the operating status information of the outdoor unit to
control the indoor unit controller.
• Detection of inverter input current and current
release operation
• Over-current detection and prevention operation
to IGBT module (Compressor stop function)
• Compressor and outdoor fan stop function when
serial signal is off (when the serial signal does not
reach the board assembly of outdoor control by
trouble of the signal system)
• Transferring of operation information (Serial
signal) from outdoor unit controller to indoor unit
controller
• Detection of outdoor temperature and operation
revolution control
• Defrost control in heating operation
(Temp. measurement by outdoor heat exchanger
and control for 4-way valve and outdoor fan)
3. Contents of operation command signal
(Serial signal) from indoor unit controller to
outdoor unit controller
The following three types of signals are sent from
the indoor unit controller.
• Operation mode set on the remote controller
• Compressor revolution command signal defined
by indoor temperature and set temperature
(Correction along with variation of room
temperature and correction of indoor heat
exchanger temperature are added.)
• Temperature of indoor heat exchanger
• For these signals ([Operation mode] and
[Compressor revolution] indoor heat exchanger
temperature), the outdoor unit controller monitors
the input current to the inverter, and performs the
followed operation within the range that current
does not exceed the allowable value.
As the compressor adopts four-pole brushless DC
motor, the frequency of the supply power from
inverter to compressor is two-times cycles of the
actual number of revolution.
1. Role of indoor unit controller
The indoor unit controller judges the operation
commands from the remote controller and assumes
the following functions.
• Judgment of suction air temperature of the indoor
heat exchanger by using the indoor temp. sensor.
(TA sensor)
• Judgment of the indoor heat exchanger
temperature by using heat exchanger sensor
(TC sensor) (Prevent-freezing control, etc.)
• Louver motor control
• Indoor fan motor operation control
• LED (Light Emitting Diode) display control
• Transferring of operation command signal
(Serial signal) to the outdoor unit
• Reception of information of operation status
(Serial signal including outside temp. data) to the
outdoor unit and judgment/display of error
• Air purifier operation control
4. Contents of operation command signal
(Serial signal) from outdoor unit controller
to indoor unit controller
The following signals are sent from the outdoor unit
controller.
• The current operation mode
• The current compressor revolution
• Outdoor temperature
• Existence of protective circuit operation
For transferring of these signals, the indoor unit
controller monitors the contents of signals, and
judges existence of trouble occurrence.
Contents of judgment are described below.
• Whether distinction of the current operation
status meets to the operation command signal
• Whether protective circuit operates
When no signal is received from the outdoor
unit controller, it is assumed as a trouble.
2. Role of outdoor unit controller
Receiving the operation command signal
(Serial signal) from the indoor unit controller, the
outdoor unit performs its role.
• Compressor operation control
• Operation control of outdoor fan motor
Operations followed to judgment of
• P.M.V. control
serial signal from indoor side.
• 4-way valve control
⎫
⎬
⎭
- 42 -
FILE NO. SVM-15074
9-2. Operation Description
1. Basic operation .......................................................................................................................
1. Operation control ...............................................................................................................
2. Operating mode selection when performing 2-room operation .........................................
3. Cooling/Heating operation .................................................................................................
52
52
53
53
2. Outdoor fan motor control ....................................................................................................... 54
3. Capacity control ...................................................................................................................... 55
4. Current release control ........................................................................................................... 55
5. Winding/Coil heating control ................................................................................................... 56
6. Defrost control (Only in heating operation) ............................................................................. 56
7. Compressor protective control ................................................................................................ 56
8. Discharge temperature control ............................................................................................... 57
9. Pulse motor valve (PMV) control ............................................................................................ 57
10. High-pressure switch/Compressor case thermostat control .................................................... 57
11. Various setting on outdoor unit (Power save, Cooling-only, etc.) ............................................ 58
9-3. Intermittent Operation Control for Indoor Fans of the Indoor Unit
at Thermo-off Side in Heating Operation............................................................... 58
- 43 -
FILE NO. SVM-15074
Item
Operation flow and applicable data, etc.
1. Basic
operation
Description
1. Operation control
Receiving the user’s operation condition setup, the operation statuses of indoor/outdoor units are
controlled.
1) The operation conditions are selected by the remote controller as shown in the below.
2) A signal is sent by ON button of the remote controller.
3) The signal is received by a sensor of the indoor unit and processed by the indoor controllers as
shown in the below.
4) The indoor controller controls the indoor fan motor and louver motor.
5) The indoor controller sends the operation command to the outdoor controller, and sends/receives
the control status with a serial signal.
6) The outdoor controller controls the operation as shown in the below, and also controls the
compressor, outdoor fan motor, 4-way valve and pulse motor valve.
Remote controller
Selection of
operation conditions
ON/OFF
Control contents of remote controller
• ON/OFF (Air conditioner/Air purifier)
• Operation select (COOL/HEAT/AUTO/DRY)
• Temperature setup
• Air direction
• Swing
• Air volume select (AUTO/LOW/LOW+/MED/MED+/HIGH)
• Sleep mode
• ON timer setup
• OFF timer setup
• High power
Indoor unit
Signal receiving
Indoor unit control
Operation command
Serial signal send/receive
Indoor unit control
• Command signal generating function of indoor unit
operation
• Calculation function (temperature calculation)
• Activation compensation function of indoor fan
• Cold draft preventive function
• Timer function
• Indoor heat exchanger release control
• Clean function
~
Outdoor unit
Serial signal send/receive
Outdoor unit control
• Indoor fan motor
• Louver motor
• Moving panel motor
• Air purifier
Outdoor unit control
• Frequency control of inverter output
• Waveform composite function
• Calculation function
(Temperature calculation)
• AD conversion function
• Quick heating function
• Delay function of compressor reactivation
• Current release function
• IPM over-current preventive function
• Defrost operation function
- 44 -
Inverter
• Compressor
• Outdoor fan motor
• 4-way valve
• Pulse motor valve
(P.M.V.)
FILE NO. SVM-15074
Item
Operation flow and applicable data, etc.
1. Basic
operation
2. Operating mode selection when performing 2-room operation
Description
1) The outdoor unit operating mode conforms to the instructions of the indoor unit that was pushed first.
2) When combined operation consisting of cooling (dry) and heating, fan (air purification) and heating,
or cleaning operation and heating is performed, operation conforms to the instructions of the indoor
unit that was pushed first as shown in the following table.
3) The indoor fan stops for the indoor unit that was pushed last and which instructions are ignored.
4) When three or four indoor units are operated concurrently, the priority is also given to operating
mode of the indoor unit which was pushed first as same as the case when two indoor units are
operated concurrently.
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Indoor unit
Pushed first
Pushed last
Pushed first
Pushed last
Pushed first
Pushed last
Pushed first
Pushed last
Pushed first
Pushed last
Pushed first
Pushed last
Pushed first
Pushed last
Pushed first
Pushed last
Pushed first
Pushed last
Pushed first
Pushed last
Pushed first
Pushed last
Pushed first
Pushed last
Pushed first
Pushed last
Pushed first
Pushed last
Pushed first
Pushed last
Pushed first
Pushed last
Set operating mode
Cooling (dry)
Cooling (dry)
Heating
Heating
Fan (solo air purification)
Fan (solo air purification)
Fan (solo air purification)
Cooling (dry)
Cooling (dry)
Fan (solo air purification)
Cooling (dry)
Heating
Heating
Cooling (dry)
Fan (solo air purification)
Heating
Heating
Fan (solo air purification)
Cleaning operation
Cleaning operation
Cleaning operation
Cooling (dry)
Cooling (dry)
Cleaning operation
Cleaning operation
Fan (solo air purification)
Fan (solo air purification)
Cleaning operation
Cleaning operation
Heating
Heating
Cleaning operation
Actual indoor unit operation
Cooling (dry)
Cooling (dry)
Heating
Heating
Fan (solo air purification)
Fan (solo air purification)
Fan (solo air purification)
Cooling (dry)
Cooling (dry)
Fan (solo air purification)
Cooling (dry)
Fan stopped
Heating
Fan stopped
Fan (solo air purification)
Fan stopped
Heating
Fan stopped
Cleaning operation
Cleaning operation
Cleaning operation
Cooling (dry)
Cooling (dry)
Cleaning operation
Cleaning operation
Fan (solo air purification)
Fan (solo air purification)
Cleaning operation
Cleaning operation
Fan stopped
Heating
Fan stopped
Actual outdoor unit operation
Cooling
Heating
Stopped
Cooling
Cooling
Cooling
Heating
Stopped
Heating
Stopped
Cooling
Cooling
Stopped
Stopped
Stopped
Heating
3. Cooling/Heating operation
The operations are performed in the following parts by controls according to cooling/heating conditions.
1) Receiving the operation ON signal of the remote controller, the cooling or heating operation signal
starts being transferred from the indoor controller to the outdoor unit.
2) At the indoor unit side, the indoor fan is operated according to the contents of “2. Indoor fan motor
control” and the louver according to the contents of “10. Louver control”, respectively.
3) The outdoor unit controls the outdoor fan motor, compressor, pulse motor valve (PMV) and
4-way valve according to the operation signal sent from the indoor unit.
∗1. The relay of 4-way valve is turned on, for a few seconds when 4-way valve is driven.
Operation ON
Indoor unit control
Setup of remote controller
Indoor fan motor control / Louver control
Sending of operation command signal
Outdoor unit control
Compressor revolution control / Outdoor fan motor control / 4-way valve control
Pulse motor valve control
- 45 -
FILE NO. SVM-15074
Item
Operation flow and applicable data, etc.
Description
2. Outdoor fan
motor control
The blowing air volume at the outdoor unit side is controlled.
Receiving the operation command from the controller of indoor
unit, the controller of outdoor unit controls fan speed.
∗ For the fan motor, a DC motor with non-stage variable speed
system is used.
However, it is limited to 8 stages for reasons of controlling.
1) The operation command sent
from the remote controller is
processed by the indoor unit
controller and transferred to the
controller of the outdoor unit.
2) When strong wind blows at
outdoor side, the operation of air
conditioner continues with the fan
motor stopped.
3) Whether the fan is locked or not
is detected, and the operation of
air conditioner stops and an
alarm is displayed if the fan is
locked.
4) According to each operation
mode, by the conditions of
outdoor temperature (To) and
compressor revolution, the speed
of the outdoor fan shown in the
table is selected.
Air conditioner ON
(Remote controller)
Indoor unit controller
1) Outdoor unit
operation command
(Outdoor fan control)
2) Fan speed ≥ 400
when the motor stopped.
YES
OFF status of
fan motor continues.
NO
Fan motor ON
3) Fan lock
YES
Air conditioner
OFF
Alarm
display
NO
4) Motor operates as shown in the table below.
Cooling operation, dry operation
Compressor revolution (rps)
Normal operation
Outdoor temp. sensor To
Sleep operation
To≧38℃
28≦To<38℃
15≦To<28℃
10≦To<15℃
5≦To<10℃
0≦To<5℃
To<0℃
To≧38℃
To<38℃
To is abnormal
~16.8
390
390
300
300
390
390
0
390
390
390
~41.3
~51.5
52.1~
650
800
800
650
650
800
650
650
650
650
650
650
390
390
650
300
300
390
0~300
0~300
0~390
650
650
800
650
650
650
650
650
800
To : Outdoor temp sensor
~16.8
390
500
650
650
390
390
390
390
390
~27.5
28.1~
650
650
650
830
830
850
830
850
500
650
650
650
650
650
650
650
650
830
To : Outdoor temp sensor
Heating operation
Compressor revolution (rps)
Normal operation
Outdoor temp. sensor To
Sleep operation
To is abnormal
- 46 -
To≧10℃
0≦To<10℃
-5≦To<0℃
To<-5℃
To≧10℃
0≦To<10℃
-5≦To<0℃
To<-5℃
FILE NO. SVM-15074
Item
Operation flow and applicable data, etc.
3. Capacity
control
Description
1) The indoor units from A to C determine the respective instruction revolutions from the difference
between the remote controller setting temperature (Ts) and the indoor temperature (Ta), and
transmit this to the outdoor unit.
2) The outdoor unit receives the instructions from the indoor units, and the inverter operates the
compressor at the calculated revolutions.
3) The compressor operation range in each operating mode is shown in the left table.
Indoor unit A
Outdoor unit
Indoor unit B
Inverter
Indoor unit C
Operation
mode
Compressor
Combination
of indoor units
Compressor
revolution
(rps)
12.0 to 22.1
M07
12.0 to 42.5
12.0 to 22.1
M10
12.0 to 42.5
M13
12.0 to 51.5
12.0 to 43.1
M16
12.0 to 54.4
M18
M22
12.0 to 44.9
12.0 to 56.2
M18
M22
12.0 to 69.4
12.0 to 73.6
2 units
M24
{∗
12.0 to 80.2
12.0 to 53.3
2 units
M24
{∗
12.0 to 100.5
12.0 to 73.6
3 units
{∗
24.5 to 56.2
3 units
{∗
14.4 to 73.6
No.of
operating
unit
Combination
of indoor units
Compressor
revolution
(rps)
M07
M10
M13
12.0 to 34.1
M16
1 unit
COOL
Operation
mode
No.of
operating
unit
1 unit
HEAT
∗ : In case that any multiple indoor units are combined.
4. Current release
control
This function prevents troubles on the electronic parts of the
compressor driving inverter.
This function also controls drive circuit of the compressor
speed so that electric power of the compressor drive circuit
does not exceed the specified value.
Outdoor temp. To
Outdoor unit inverter main
circuit control current
Setup of current release point
Operating current ≤
Setup value
High
Reduce compressor speed
Low
Current decrease
Capacity control continues.
Cooling current
release value
Outdoor temp.
Heating current
release value
45˚C
40˚C
44˚C
7.4 A
16˚C
39˚C
9.6 A
11˚C
15.5˚C
10.5˚C
14.4 A
14.2 A
14.5 A
14.6 A
- 47 -
1) The input current of the outdoor
unit is detected in the inverter
section of the outdoor unit.
2) According to the detected
outdoor temperature, the
specified value of the current is
selected.
3) Whether the current value
exceeds the specified value or
not is judged.
4) If the current value exceeds the
specified value, this function
reduces the compressor speed
and controls speed up to the
closest one commanded from
the indoor unit within the range
which does not exceed the
specified value.
FILE NO. SVM-15074
Item
Operation flow and applicable data, etc.
5. Winding/Coil
heating control
When the outdoor temperature is low, the windings/
coils are heated to ensure compressor reliability.
Description
Winding/Coil heating is performed when
the following conditions are met.
Condition 1 :
Outdoor temperature To
0˚C
-1˚C
Winding/Coil
heating amount
When the discharge sensor temperature
(Td) is less than 30°C.
OFF
Condition 2 :
When the outdoor sensor temperature (To)
is as shown in the left figure.
20 W
–5˚C
–6˚C
65 W
6. Defrost control
(Only in heating
operation)
(This function removes frost adhered to the outdoor
heat exchanger.)
The temperature sensor of the outdoor heat exchanger (Te sensor) judges the frosting status of the
outdoor heat exchanger and the defrost operation is
performed with 4-way valve reverse defrost system.
Outdoor heat
exchanger temperature
Start of heating operation
0’
10’ 15’
29’ 35’
Operation time
(Minute)
–5°C
–8°C
–10°C
90’ 6 hours
E zone
C zone
A zone
D zone
–20°C
*
B zone
<Defrost operation>
• Defrost operation in A to E zones
1) Stop operation of the compressor for
30 seconds.
2) Invert (OFF) 4-way valve 10 seconds
after stop of the compressor.
3) The outdoor fan stops at the same time
when the compressor stops.
4) When temperature of the indoor heat
exchanger becomes 38°C or lower,
stop the indoor fan.
<Finish of defrost operation>
* The minimum value of Te sensor 10 to 15 minutes after start of
operation is stored in memory as Te0 and Te1. (–10°C < Te1 ≤ 10°C)
Table 1
A zone
When Te0 - TE ≥ 2.5 continued for 2 minutes in A zone,
defrost operation starts.
B zone
When the operation continued for 2 minutes in B zone,
defrost operation starts.
C zone
When Te0 - TE ≥ 3 continued for 2 minutes in C zone,
defrost operation starts.
D zone
When the operation continued for 2 minutes in D zone,
defrost operation starts.
E zone
When Te1 - TE ≥ 1 continued for 2 minutes in E zone,
defrost operation starts.
7. Compressor
protective
control
The necessity of defrost operation is
detected by the outdoor heat exchanger
temperature. The conditions to detect the
necessity of defrost operation differ in A,
B, C, D or E zone each. (Table 1)
• Returning conditions from defrost
operation to heating operation
1) Temperature of outdoor heat exchanger
rises to +8°C or higher.
2) Temperature of outdoor heat exchanger
is kept at +5°C or higher for 80 seconds.
3) Defrost operation continues for
10 minutes.
<Returning from defrost operation>
1) Stop operation of the compressor for
approx. 60 seconds.
2) Invert (ON) 4-way valve approx. 40
seconds after stop of the compressor.
3) The outdoor fan starts rotating at the
same time when the compressor starts.
1) This control purposes to raise the operation frequency until 36Hz for 2 minutes in order to
protect the compressor (Prevention of oil accumulation in the refrigerating cycle) when the status
that the operation frequency is 36Hz or less has continued for 10 hours was calculated.
The operation frequency follows the normal indoor command after controlling.
2) Although the compressor may stop by THERMO-OFF control when the room temperature varies
and then attains the set temperature by this control, it is not abnormal.
3) During this control works, it stopping the operation by the remote controller, the operation does
not continue.
- 48 -
FILE NO. SVM-15074
Item
Operation flow and applicable data, etc.
1. Purpose
8. Discharge
temperature
control
This function detects error on the
refrigerating cycle or error on the
compressor, and performs protective control.
Control operation
Td value
120°C
115°C
111°C
108°C
101°C
Description
Judges as an error and stops the compressor.
Reduce the compressor speed.
Reduce slowly compressor speed.
Keeps the compressor speed.
2. Operation
• Control of the compressor speed
The speed control is performed as
described in the left table based upon
the discharge temperature.
If the operation is performed with lower speed than
one commanded by the serial signal, speed is slowly
raised up to the commanded speed.
Operates with speed commanded by the serial signal.
9. Pulse motor
valve (PMV)
control
This function controls throttle amount of the
refrigerant in the refrigerating cycle.
According to operating status of the air conditioner,
this function also controls the open degree of valve
with an expansion valve with pulse motor.
Starting up
Initialize
Move to initial position
Compressor ON
∗ SH control
TD release control
1) When starting the operation, move the
valve once until it fits to the stopper.
(Initialize)
∗ In this time, “Click” sound may be heard.
2) Adjust the open degree of valve by super
heat amount. (SH control)
3) If the discharge temperature was
excessively up, adjust the open degree of
valve so that it is in the range of set
temperature. (Discharge temp. control)
4) When defrost operation is performed, the
open degree of PMV is adjusted according
to each setup conditions during
preparation for defrost and during defrost
operation (4-way valve is inversed.).
5) When turning off the compressor by
thermo. OFF or STOP by remote
controller, the open degree of the PMV is
adjusted to the setup value.
∗ PMV open degree control
Stop by
remote controller
Thermo. OFF
Defrost
Setup value
Setup value
Setup value
Power OFF
∗ SH (Super Heat amount) =
Ts (Temperature of suction pipe of the compressor) –
Tc or Te (Heat exchanger temperature at evaporation side)
∗ PMV: Pulse Motor Valve
10. High-pressure 1) When the high-pressure switch or the compressor case thermostat operates, the operation of
the compressor is terminated.
switch/
Compressor
2) The compressor restarts after 2 minutes 30 seconds using [1] as an error count.
case
After restart, the error count is cleared when operation continues for 10 minutes or more.
thermostat
control
3) An error is confirmed with the error count [10].
4) For the indicated contents of error, confirm using the check code table.
- 49 -
FILE NO. SVM-15074
Item
Description
Operation flow and applicable data, etc.
The following settings are availiable by DIP switch setup.
11. Various setting
on outdoor unit
(Power save,
Cooling-only, etc.)
Function
Power save
setup
Control contents
Setting position
Turn the switch to ON, when using the power save function.
SW802
SW802
1 2 3 4
ON
OFF
Select current limit
Power save function
Cooling-only
setup
ON
ON
OFF
OFF
No.2
OFF
ON
ON
OFF
Current limit
11A
8.5A
Full
Full (Default)
When using the air conditioner as a cooling-only
conditioner, turn the switch to ON.
(If the heating mode is selected by remote controll, outdoor
unit will remain stop. If mixed with indoor unit cooling and
heating, outdoor unit performs cooling operation.)
SW801
1 2 3 4
ON
OFF
Heating-only
setup
No.1
Cooling only setting
Heating only setting
When using the air conditioner as a heating-only
conditioner, turn the switch to ON.
(If the cooling mode is selected by remote controll, outdoor
unit will remain stop. If mixed with indoor unit cooling and
heating, outdoor unit performs heating operation.)
Caution:Set the switch before turning on the power supply.
9-3. Intermittent Operation Control for Indoor Fans of the Indoor Unit at Thermo-off
Side in Heating Operation
While heating operation is executed in two rooms, if room temperature reached the setup temperature in one
room and thermo-off occurred, the following operations start. (Refer to the figure below.)
1. The indoor unit of the room (A room) in which thermo-off did not occur starts a continuous operation with
the setup number of revolution.
2. The indoor unit of the room (B room) in which thermo-off occurred starts intermittent operation of the indoor fan.
The indoor fan operates with number of revolution of UL or SUL. Fan-ON time is 2 minutes and Fan-OFF
time is 2 to 4 minutes.
However if temperature of the indoor heat exchanger becomes over 55°C or more in B room, the indoor fan
stops the intermittent operation and starts continuous operation.
While heating operation is executed in 2 rooms, if room temperature reached the setup temperature in both
rooms and thermo-off occurred, both indoor units start intermittent operation of the indoor fan.
Indoor fan: Operates with setup number of revolution
A room
Thermo-ON continues
0 rpm
B room thermo-OFF
B room thermo-ON
↓
Thermo-OFF
↓
Thermo-ON
B room thermo-ON
Operated with setup number
of revolution
0 rpm
UL
(∗1)
UL
(∗1)
Fan stop
Fan stop
T on
∗1 Operated with UL or SUL
UL
(∗1)
T on
T off
Fan stop
T on
T off
T off
∗ In case which Tc sensor temperature exceeds 55˚C
in B room, the fan stops intermittent operation and
starts continuous operation with UL or SUL (∗1).
- 50 -
T on=2 min.
T off time
To < 5˚C
2 min.
5 < To < 10
3 min.
10 < To
4 min.
10. INSTALLATION PROCEDURE
FILE NO. SVM-15074
10-1. Installation/Servicing Tools
Changes in the product and components
In the case of an air conditioner using R410A, in order to prevent any other refrigerant from being charged
accidentally, the service port diameter of the outdoor unit control valve (3-way valve) has been changed.
(1/2 UNF 20 threads per inch)
• In order to increase the pressure resisting strength of the refrigerant piping flare processing diameter and
size of opposite side of flare nuts has been changed. (for copper pipes with nominal dimensions 1/2 and 5/8)
New tools for R410A
New tools for R410A
Changes
Applicable to R22 model
×
As pressure is high, it is impossible to measure by means of
conventional gauge. In order to prevent any other refrigerant from
being charged, each port diameter has been changed.
Charge hose
×
In order to increase pressure resisting strength, hose materials and
port size have been changed (to 1/2 UNF 20 threads per inch).
When purchasing a charge hose, be sure to confirm the port size.
Electronic balance
for refrigerant charging
{
As pressure is high and gasification speed is fast, it is difficult to
read the indicated value by means of charging cylinder, as air
bubbles occur.
Torque wrench
(nominal diam. 1/2, 5/8)
×
The size of opposite sides of flare nuts have been increased.
Incidentally, a common wrench is used for nominal diameters 1/4
and 3/8.
Flare tool (clutch type)
{
Gauge manifold
Gauge for projection
adjustment
—
By increasing the clamp bar’s receiving hole, strength of spring in
the tool has been improved.
—
Used when flare is made by using conventional flare tool.
Vacuum pump adapter
{
Connected to conventional vacuum pump. It is necessary to use
an adapter to prevent vacuum pump oil from flowing back to the
charge hose. The charge hose connecting part has two ports-one
for conventional refrigerant (7/16 UNF 20 threads per inch) and
one for R410A. If the vacuum pump oil (mineral) mixes with R410A
a sludge may occur and damage the equipment.
Gas leakage detector
×
Exclusive for HFC refrigerant.
• Incidentally, the “refrigerant cylinder” comes with the refrigerant designation (R410A) and protector coating in the
U. S’s ARI specified rose color (ARI color code: PMS 507).
• Also, the “charge port and packing for refrigerant cylinder” require 1/2 UNF 20 threads per inch corresponding to
the charge hose’s port size.
CAUTION
• Incorrect wiring connection may cause electrical parts to burn out.
• Be sure to comply with local regulations/codes when running the wire from outdoor unit to indoor unit.
(Size of wire and wiring method etc.)
• Every wire must be securely connected.
• If incorrect or incomplete wiring is carried out, fire or smoke may result.
• Prepare the power supply for the exclusive use of the air conditioner.
- 51 -
FILE NO. SVM-15074
10-2. Outdoor Unit
10-2-1. Accessory and Installation Parts
Installation manual
1
Rubber cap
(Water-proof)
5
F-GAS label
∗1
1
Drain nipple
1
CD-ROM
(Installation manual)
∗1
1
∗1 Part that do not exist in RAS-3M26S3AV-A,-TR.
10-2-2. Refrigerant Piping
• Piping kit used for the conventional refrigerant cannot be used.
• Use copper pipe with 0.8 mm or more thickness.
• Flare nut and flare works are also different from those of the conventional refrigerant.
Take out the flare nut attached to the main unit of the air conditioner, and use it.
10-2-3. Installation Place
•
•
•
•
•
•
•
•
A place which provides the spaces around the outdoor unit.
A place where the operation noise and discharged air do not disturb your neighbors.
A place which is not exposed to a strong wind.
A place which does not block a passageway.
When the outdoor unit is to be installed in an elevated position, be sure to secure its feet.
There must be sufficient spaces for carrying the unit into and out of the site.
A place where the drain water does not raise any problem.
A place which can bear the weight of the outdoor unit and does not allow an increase in noise level and vibration.
CAUTION
1. Install the outdoor unit without anything blocking the air discharging.
2. When the outdoor unit is installed in a place exposed always to a
strong wind like a coast or on a high story of a building, secure the
normal fan operation using a duct or a wind shield.
3. Especially in windy area, install the unit to prevent the admission of wind.
OK
NO GOOD
Strong
wind
Fig. 10-2-1
4. Installation in the following places may result in trouble. Do not install the unit in such places.
• A place full of machine oil.
• A place full of sulfide gas.
• A place where high-frequency waves are likely
• A saline-place such as a coast.
to be generated as from audio equipment,
welders, and medical equipment.
10-2-4. Optional Installation Parts (Local Supply)
Parts name
Parts name
Refrigerant piping ∗1
Q’ty
Indoor unit (abbreviation)
Liquid side (O.D.)
Gas side (O.D.)
07, 10, 13
6.35 mm
9.52 mm
16, 18, 22, 24
6.35 mm
12.7 mm
Putty, PVC tapes
1 ea.
1 ea.
∗1 Refrigerant piping covered with insulating material (Polyetylene form, 6 mm thick).
When duct-type or cassette-type unit is to be installed, it shall be covered with thicker insulating material
(Polyetylene form, 10 mm thick).
- 52 -
FILE NO. SVM-15074
10-2-5. Installation
1. Piping connections to the outdoor unit should be
arranged in the sequence A, B, C starting from
the bottom.
(For each piping connection, the gas pipe is on
the bottom and the liquid pipe is on the top.)
NOTE
For installation, at least 3 dimensions should be
kept free from obstacles (walls).
2. When multiple indoor units are to be connected to
the outdoor unit, make the ends of the pipes and
wires from each indoor unit to ensure that they will
be connected to the outdoor unit correctly.
(Problems caused by indoor units being connected to the outdoor unit incorrectly are very
common in multiple-unit installations.)
3. The length and height difference of the connecting pipes between the indoor and outdoor units
must be within the ranges indicated below.
• Total piping length :
Non. Additional refrigerant ....................... 40 m
Additional refrigerant .............................. 70 m
..................... 41 to 70 m
Additional 20 g of refrigerant ..... Per every 1 m
• Minimum piping length :
A or B or C = 3 m or more
• Maximum indoor piping length :
A or B or C = 25 m or less
Necessary space for installation
If you need to install the outdoor unit in a location
where there are some obstructions or a wall, secure
sufficient space as shown in the figure below.
The cooling/heating effect may be reduced by 10%.
200
or more
150
or more
Upper side view (Unit: mm)
300
or more
150
or more
150
or more
1000
or more
500
or more
• Maximum piping height difference :
A or B or C = 15 m or less
• Maximum piping/height difference between
2 units = 15 m or less
A
150
or more
1000
or more
1000
or more
500
or more
Side view (Unit: mm)
15 m or less
15 m or
less 15 m or less
Fig. 10-2-2
C
Outdoor
unit
B
Fig. 10-2-5
4. Connect 2 or more indoor units for heat pump.
5. If the outdoor units is to be mounted on a wall,
make sure that the platform supporting it is
sufficiently strong.
The platform should be designed and manufactured to maintain its strength over a long period
of time, and sufficient consideration should be
given to ensuring that the outdoor unit will not fall.
6. When the outdoor unit is to be mounted high on
a wall, take particular care to ensure that parts
do not fall installer is protected.
7. When doing installation work on level ground, it
is usual to wiring and piping connections to the
indoor units. And/then make to the outdoor unit.
However if outdoor work is difficult it is possible
instead to make changes to the procedure.
For example by making adjustments to the wiring
and piping length on the inside
(rather than the outside).
Fig. 10-2-3
Fixing bolt arrangement of outdoor unit
365
600
Suction side
Diffuser
Fig. 10-2-4
• Secure the outdoor unit with the fixing bolts and nuts
if the unit is likely to be exposed to a strong wind.
• Use Ø8 mm or Ø10 mm anchor bolts and nuts.
- 53 -
FILE NO. SVM-15074
‹ How to remove the front panel
• Tightening torque of flare pipe
The pressure of R410A is higher than R22.
(Approx. 1.6 times)
Therefore securely tighten the flare pipes which
connect the outdoor unit and indoor unit with the
specified tightening torque using a torque wrench.
If any flare pipe is incorrectly connected, it may
cause not only a gas leakage but also trouble in
the refrigeration cycle.
1. Remove 5 screws of the front panel.
2. Pull the front panel downward.
Flare at
indoor
unit side
Flare at
outdoor
unit side
Fig. 10-2-7
Half union
Flare nut
Externally
threaded side
Internally
threaded side
Use a wrench to secure.
Fig. 10-2-6
Use a torque wrench to tighten.
Fig. 10-2-8
‹ Tightening connection
Align the centers of the connecting pipes and
tighten the flare nut as far as possible with your
fingers.
Then tighten the nut with a spanner and torque
wrench as shown in the figure.
CAUTION
• Do not apply excess torque.
Otherwise, the nut may break.
(Unit : N·m)
Outer dia. of copper pipe
Tightening torque
Ø6.35 mm
14 to 18 (1.4 to 1.8 kgf•m)
Ø9.52 mm
33 to 42 (3.3 to 4.2 kgf•m)
Ø12.7 mm
50 to 62 (5.0 to 6.2 kgf•m)
Indoor unit
Outdoor unit
Fig. 10-2-9
Connectable capacity class
A
- 54 -
B
C
07, 10, 13
(with reducer)
16
(with expander)
16, 18, 22, 24
07, 10, 13
Total
54
FILE NO. SVM-15074
10-2-7. Evacuating
10-2-6. Refrigerant Piping Connection
After the piping has been connected to all indoor unit(s),
you can perform the air purge together at once.
CAUTION
KEEP IMPORTANT 4 POINTS FOR PIPING WORK
1. Keep dust and moisture from entering the pipes.
2. Tight connection (between pipes and unit)
3. Evacuate the air in the connecting pipes using
VACUUM PUMP.
4. Check gas leak. (connected points)
AIR PURGE
Evacuate the air in the connecting pipes and in the
indoor unit using vacuum pump.
Do not use the refrigerant in the outdoor unit.
For details, see the manual of vacuum pump.
‹ Use a vacuum pump
‹ Flaring
Be sure to use a vacuum pump with counter-flow
prevention function so that inside oil of the pump
does not flow backward into pipes of the air
conditioner when the pump stops.
(If inside oil of the vacuum pump enters into the air
conditioner which adopts R410A, a trouble of the
refrigeration cycle may be caused.)
1. Connect the charge hose from the manifold valve
to the service port of the gas side packed valve.
2. Connect the charge hose to the port of vacuum
pump.
3. Open fully the low pressure side handle of the
gauge manifold valve.
4. Operate the vacuum pump to start for evacuating.
Perform evacuating for about 40 minutes if the
piping length is total 70 meters.
(assuming a pump capacity of 27 liters per minute.)
Then confirm that the compound pressure gauge
reading is –101 kPa ( –76 cmHg).
5. Close the low pressure side valve handle of
gauge manifold.
6. Open fully the valve stem of the packed valves
(both sides of Gas and Liquid).
7. Remove the charging hose from the service port.
8. Securely tighten the caps on the packed valves.
1. Cut the pipe with a pipe cutter.
OK
90˚
NO GOOD
Obliquity Roughness
Warp
Fig. 10-2-10
2. Insert a flare nut into the pipe, and flare the
pipe. As the flaring sizes of R410A differ from
those of refrigerant R22, the flare tools newly
manufactured for R410A are recommended.
However, the conventional tools can be used by
adjusting projection margin of the copper pipe.
B
• Projection margin in flaring :
B (Unit : mm)
Rigid (Clutch type)
Outer dia. of
copper pipe
6.35
9.52
12.7
Fig. 10-2-11
R410A tool used
R410A
R22
0 to 0.5 (Same as left)
0 to 0.5 (Same as left)
0 to 0.5 (Same as left)
Conventional tool used
R410A
R22
1.0 to 1.5 0.5 to 1.0
1.0 to 1.5 0.5 to 1.0
1.0 to 1.5 0.5 to 1.0
Compound
pressure gauge
Imperial (Wing nut type)
Outer dia. of copper pipe
6.35
9.52
12.7
R22
1.0 to 1.5
1.0 to 1.5
1.5 to 2.0
R410A
1.5 to 2.0
1.5 to 2.0
2.0 to 2.5
Manifold valve
–101kPa
(–76cmHg)
Handle Hi
(Keep full closed)
Handle Lo
Charge hose
(For R410A only)
A
• Flaring size : A (Unit : mm)
Pressure gauge
Charge hose
(For R410A only)
Fig. 10-2-12
Outer dia. of copper pipe
6.35
9.52
12.7
A
R410A
9.1
13.2
16.6
Service port
(Valve core
(Setting pin))
+0
- 0.4
R22
9.0
13.0
16.2
Packed valve
at liquid side
Packed valve
at gas side
∗ In the case of flaring for R410A with the conventional
flare tool, pull out it approx. 0.5 mm more than that
for R22 to adjust to the specified flare size.
The copper pipe gauge is useful for adjusting
projection margin size.
Vacuum pump
adapter for
counter-flow prevention
(For R410A only)
Vacuum pump
Fig. 10-2-13
- 55 -
FILE NO. SVM-15074
‹ Packed valve handling precautions
3 units (A + B + C) Multi
• Open the valve stem all the way out ; do not try
to open it beyond the stopper.
• Securely tighten the valve stem cap in torque
is as follows :
Gas side (Ø12.7 mm)
50 to 62 N•m (5.0 to 6.2 kgf•m)
Gas side (Ø9.52 mm)
33 to 42 N•m (3.3 to 4.2 kgf•m)
Liquid side (Ø6.35 mm)
14 to 18 N•m (1.4 to 1.8 kgf•m)
Service port
14 to 18 N•m (1.4 to 1.8 kgf•m)
Terminal block(Connecting cable)
Screw
Power cord
Connecting cable
(A unit)
Hexagonal wrench is required.
Connecting cable
(B unit)
Fig. 10-4-15
3 units (A + B + C) Multi
Fig. 10-2-14
Connecting cable
10-2-8. Electrical Work
(C unit)
For the air conditioner that has no power cord,
connect a power cord to it as mentioned below.
Model
Fig. 10-4-16
3 Units Multi
CAUTION
3M26S3AV-E,-A,-TR
Power supply
220 – 240 V, ~50 Hz
220 V, ~60 Hz
Maximum running current
15.4 A
Installation fuse rating
20 A breaker of fuse
(All types can be used.)
Power cord
H07 RN-F or 245 IEC 66
(2.5 mm² or more)
• Wrong wiring connection may cause some electrical
parts burn out.
• Be sure to use the cord clamps specified positions
with attached to the product.
• Do not damage or scratch the conductive core and
inner insulator of power and inter-connecting cables
when peeling them.
• Be sure to comply with local codes on running the
wire from outdoor unit to indoor unit (size of wire and
wiring method etc.)
• Use the power cord and Inter-connecting cable with
specified thickness, specified type, and protective
devices specified.
‹ Wiring connection
1. Remove the front panel and cord clamp from
the outdoor unit.
2. Connect the connecting cable to the terminal
as identified by the matching numbers on the
terminal block of indoor and outdoor unit.
3. Insert the power cord and the connecting
cable fully into the terminal block and secure
it tightly with screws.
4. Insulate the unused cords (conductors) from
water entering in the outdoor unit. Locate
them so that they do not touch any electrical
or metal parts.
5. Secure the power cord and the connecting
cable with the cord clamp.
6. Attach the front panel on the outdoor unit.
‹ Stripping length power cord and
connecting cable
10
L N
10
40
Earth line
Power cord
40
30
Earth line
Connecting
cable
Fig. 10-2-17
- 56 -
1 2 3
10
10
30
FILE NO. SVM-15074
10-2-8. Check and Test Operation
For R410A, use the leak detector exclusively manufactured for HFC refrigerant (R410A, R134a, etc.).
* The conventional leak detector for HCFC refrigerant (R22, etc.) cannot be used because its sensitivity for HFC refrigerant lowers to approx. 1/40.
• Pressure of R410A becomes approx. 1.6 times of
that of R22. If installation work is incompletely
finished, a gas leakage may occur in the cases
such as pressure rise during operation. Therefore,
be sure to test the piping connections for leaking.
Check places for indoor unit
Check places for outdoor unit
Fig. 10-2-18
• Check the flare nut connections, valve stem cap
connections and service port cap connections for
gas leak with a leak detector or soap water.
10-2-9. Miswiring (Mispiping) Check
Make sure that the wiring and piping for each
room have the same alphabetical codes (A, B, C).
Connect and secure the power cord.
Use the power cord/cables with thickness, type and
protective devices specified in this manual.
Insulate the unused cords (conductors) with PVC tape.
1. Detach the front panel of the outdoor unit.
Do not remove the air discharge grille.
2. Turn on the circuit breaker to supply electricity.
3. Start running all the indoor units connected to the
outside unit in the cooling mode.
• You need not specify the temperature setting of
the indoor units.
• You cannot check wiring/piping when the external
temperature is 5°C or less.
4. Turn on the SW802 No.4 switch on hte P.C. board
MCC 5071.
The wiring / piping check starts automatically.
While checking, each LED flashes consecutively to
indicate that the checking each indoor unit is in
progress. When checking is complete, the check
result is displayed on the LED panel.
See the table below for datails.
4-1. If no problems are detected.
The checking operation returns to the normal
operation automatically.
The compressor stops temporarily, then it
restarts. The D801 LED flashes while the
compressor is stopped.
4-2. If incorrect wiring/piping is detected.
The checking operation stops.
Check the status of the LED to confirm the
details of the problem. Turn off the circuit
breaker, then check wiring/piping again.
5. Turn off SW802 No.4 switch on the P.C. board
MCC 5071.
• The checking operation changes to the normal
operation.
CAUTION
• Use a circuit breaker of a type that is not tripped
by shock waves.
• If incorrect/incomplete wiring is carried out, it will
cause an electrical fire or smoke.
• Prepare the power supply for exclusive use with
the air conditioner.
• This product can be connected to the mains.
Connection to fixed wiring :
A switch or circuit breaker which disconnects all
poles and has a contact separation of at least
3 mm must be incorporate in the fixed wiring.
An approved short circuit breaker or switches
must be used.
∗ (A breaker having a sensitivity of approximately 0.1 second or less and a capacity of
approximately 30 mA is usually used.)
Fig. 10-2-19
- 57 -
FILE NO. SVM-15074
¤ : LED ON, z : LED OFF,  : LED Flash
LED
Before check
During check
D800
D801
D802
D803
D804
D805
¤
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z



¤
Check results
















z
z
z
¤
z
z
¤
¤
¤
z
z
z
¤
¤
¤
z
¤
¤

z
z
z

¤
z
z
z
¤
z
z
z
z
¤
¤
z
¤
¤
z
¤
¤
¤
¤
¤
z
¤
z
¤
¤
z
¤
¤
¤
¤
¤
¤
z
Description
Normal operation (no error)
Checking A unit
Checking B unit
Checking C unit
Normal operation (no error)
Trouble in unit A
Trouble in unit B
Trouble in unit C
Trouble in unit A and B
Trouble in unit A and C
Trouble in unit A
Trouble in unit B and C
¤
¤
Trouble in unit B
¤
¤
¤
¤
¤
Trouble in unit A,B
z
- 58 -
Trouble in unit C
Trouble in unit A,B and C
Trouble in unit A,C
Trouble in unit B,C
Trouble in unit A,B,C
Trouble in all units service valve stays closed
FILE NO. SVM-15074
10-3. Test Operation
10-3-4. Remote Control A-B Selection
10-3-1. Gas Leak Test
• When two indoor units are installed in the same room or
adjacent two rooms, if operating a unit, two units may
receive the remote control signal simultaneously and
operate. In this case, the operation can be preserved
by setting either one remote control to B setting.
(Both are set to A setting in factory shipment.)
• The remote control signal is not received when the
settings of indoor unit and remote control are different.
• There is no relation between A setting/B setting and A
room/B room when connecting the piping and cables.
Check the flare nut connections for gas leaks with a
gas leak detector and/or soapy water.
Check places for indoor unit
<Remote control A-B selection>
To separate using of remote control for each indoor unit
in case of 2 air conditioners are installed nearly.
Check places for outdoor unit
Fig. 10-3-1
10-3-2. Test Operation
To switch the TEST RUN (COOL) mode, press
RESET button for 10 sec.
(The beeper will make a short beep.)
<Remote Control B Setup>
1. Press [RESET] button on the indoor unit to turn the air
conditioner ON.
2.. Point the remote control at the indoor uni
3. Push and hold [CHECK] button on the Remote Control
by the tip of the pencil. "00" will be shown on the display
(Picture 1 )
4. Press [MODE] during pushing [CHECK]. "B" will show
on the display and "00" will disappear and the air
conditioner will turn OFF. The Remote Control B
is memorized [Picture 2).
NOTE : 1. Repeat above step to reset Remote
Control to be A.
2.. Remote Control A has not "A" displa
3.. Default setting of Remote Control fr
factory is A.
1
RESET button
Fig. 10-3-2
Fig. 10-3-3
10-3-3. Setting the Auto Restart
This product is designed so that, after a power
failure, it can restart automatically in the same
operating mode as before the power failure.
NOTE
The product was shipped with Auto Restart function
in the OFF position. Turn it ON as required.
1) Push and hold the RESET button for about
3 seconds. After 3 seconds, three short electric
beeps will be heard to inform you that the Auto
Restart has been selected.
2) To cancel the Auto Restart, follow the steps
described in the section Auto Restart Function of
the Owner’s Manual.
- 59 -
2
FILE NO. SVM-15074
11. HOW TO DIAGNOSE THE TROUBLE
The pulse modulating circuits are mounted to both indoor and outdoor units.
Therefore, diagnose troubles according to the trouble diagnosis procedure as described below.
(Refer to the check points in servicing written on the wiring diagrams attached to the indoor/outdoor units.)
Table 11-1
No.
Page
Troubleshooting Procedure
1
First Confirmation
61
2
Primary Judgment
62
3
Judgment by Flashing LED of Indoor Unit
62
4
Self-Diagnosis by Remote Controller
(Check Code)
63
5
Judgment of Trouble by Symptom
70
6
Trouble Diagnosis by Outdoor LED
7
Troubleshooting
72
80
8
Inspection of the Main Parts
82
9
How to Simply Judge Whether Outdoor
Fan Motor is Good or Bad
83
NOTE
A large-capacity electrolytic capacitor is used in the
outdoor unit controller (inverter). Therefore, if the
power supply is turned off, charge (charging voltage
DC280V to 373V) remains and discharging takes a lot of
time (for more than 5 minutes). After turning off the
power source, if touching the charging section before
discharging, an electrical shock may be caused.
Discharge the electrolytic capacitor completely by
using solder iron, etc.
WARNING
The electrolytic capacitor may not normally discharge
according to error contents and the voltage may remain.
Therefore, be sure to discharge the capacitor.
WARNING
For discharging, never use a screwdriver and others
for short-circuiting between + and – electrodes,
As the electrolytic capacitor is one with a large
capacity, it is very dangerous because a large electric
spark will occur.
<Discharging method>
Connect the discharge resistance (approx. 100Ω/40W)
or plug of the soldering iron to voltage between +
and – of C13 on the main P.C. board MCC-1571, and
then perform discharging.
Discharge position + and - of C13
(Discharging period: 10 seconds or more)
Fig. 11-1
- 60 -
FILE NO. SVM-15074
11-1. First Confirmation
11-1-3. Operation Which is not a Trouble
(Program Operation)
11-1-1. Confirmation of Power Supply
For controlling the air conditioner, the program
operations are built in the microcomputer as
described in the following table.
If a claim is made for running operation, check
whether or not it meets to the contents in the
following table.
When it does, we inform you that it is not trouble of
equipment, but it is indispensable for controlling and
maintaining of air conditioner.
Confirm that the power breaker operates (ON)
normally.
11-1-2. Confirmation of Power Voltage
Confirm that power voltage is AC 220–240 ±10%.
If power voltage is not in this range, the unit may not
operate normally.
Table 11-1-1
No.
Operation of air conditioner
Description
1
When power breaker is turned “ON”, the operation
lamp (Green) of the indoor unit flashes.
The OPERATION lamp of the indoor unit flashes when
power source is turned on.
If “START/STOP” button is operated once, flashing
stops. (Flashes also in power failure)
2
Compressor may not operate even if the room
temperature is within range of compressor-ON.
The compressor does not operate while compressor
restart delay timer (3-minutes timer) operates.
The same phenomenon is found after power source has
been turned on because 3-minutes timer operates.
3
In DRY and SLEEP MODE, FAN (air flow) display
does not change even though FAN (air flow select)
button is operated.
The air flow indication is fixed to [AUTO].
4
Increasing of compressor motor speed stops
approx. 30 seconds after operation started, and
then compressor motor speed increases again
approx. 30 seconds after.
For smooth operation of the compressor, the
compressor motor speed is restricted to Max. 33 rps
for 2 minutes and Max. 57 rps for 2 minutes to
4 minutes, respectively after the operation has started.
5
The set value of the remote control should be
below the room temperature.
If the set value is above the room temperature,
Cooling operation is not performed.
And check whether battery of the remote control is
consumed or not.
6
In AUTO mode, the operation mode is changed.
After selecting Cool or Heat mode, select an operation
mode again if the compressor keeps stop status for
15 minutes.
7
In HEAT mode, the compressor motor speed does
not increase up to the maximum speed or
decreases before the temperature arrives at the
set temperature.
The compressor motor speed may decrease by
high-temp. release control (Release protective
operation by temp.-up of the indoor heat exchanger)
or current release control.
8
Cool, Dry, or Heat operation cannot be performed.
When the unit in other room operates previously in
different mode, Fan Only operation is performed
because of first-push priority control. (Cool operation
and Dry operation can be concurrently performed.)
- 61 -
FILE NO. SVM-15074
11-2. Primary Judgment
To diagnose the troubles, use the following methods.
1) Judgment by flashing LED of indoor unit
2) Self-diagnosis by service check remote controller
3) Judgment of trouble by every symptom
Firstly use the method (1) for diagnosis. Then, use the method (2) or (3) to diagnose the details of troubles.
For any trouble occurred at the outdoor unit side, detailed diagnosis is possible by 6-serial LED on the control
P.C. board.
11-3. Judgment by Flashing LED of Indoor Unit
While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the
contents of self-diagnosis are displayed with block on the indoor unit indication section.
Table 11-3-1
Indoor indication
lamp flashes.
Which lamp
does flash?
Item
Check code
Block display
A
—
OPERATION (Green)
Flashing display (1 Hz)
Power failure
(when power is ON)
B
OPERATION (Green)
Flashing display (5 Hz)
Protective circuit operation
for indoor P.C. board
C
OPERATION (Green)
TIMER (Orange)
Flashing display (5 Hz)
Protective circuit operation
for connecting cable and
serial signal system
D
OPERATION (Green)
Flashing display (5 Hz)
Protective circuit operation
for outdoor P.C. board
E
OPERATION (Green)
TIMER (Orange)
Flashing display (5 Hz)
Protective circuit operation for others
(including compressor)
Description for self-diagnosis
NOTE
• The contents of items B and C and a part of item E are displayed when air conditioner operates.
• When item B and C, and item B and a part of item E occur concurrently, priority is given to the block of item B.
• The check codes can be confirmed on the remote controller for servicing.
- 62 -
FILE NO. SVM-15074
11-4. Self-Diagnosis by Remote Controller (Check Code)
1. If the lamps are indicated as shown B to E in Table 11-3-1, execute the self-diagnosis by the remote controller.
2. When the remote controller is set to the service mode, the indoor controller diagnoses the operation
condition and indicates the information of the self-diagnosis on the display of the remote controller with the
check codes.
If a fault is detected, all lamps on the indoor unit will flash at 5Hz and it will beep for 10 seconds
(beep, beep, beep ... ). The timer lamp usually flashes (5Hz) during self-diagnosis.
11-4-1. How to Use Remote Controller in Service Mode
1
Push [CHECK] button with a tip of pencil to set the
remote controller to the service mode.
• “
” is indicated on the display of the remote
controller.
2
Push [ON ] or [OFF ] button
If there is no fault with a code, the indoor unit will beep
once (Beep) and the display of the remote controller will
change as follows :
•••
• The TIMER indicator of the indoor unit flashes continuously.
(5 times per 1 sec.)
• Check the unit with all 52 check codes (
as shown in Table-11-4-1.
• Press [ON ] or [OFF
code backward.
to
)
] button to change the check
If there is a fault, the indoor unit will beep for 10
seconds (Beep, Beep, Beep ... ).
Note the check code on the display of the remote
controller.
• 2-digits alphanumeric will be indicated on the display.
• All indicators on the indoor unit will flash.
(5 times per 1 sec.)
3
Alphanumeric characters are
used for the check codes.
is 5.
is 6.
is A.
is B.
is C.
is D.
Push [START/STOP] button to release the service mode.
• The display of the remote controller returns to as it
was before service mode was engaged.
4
Time shortening method.
1. Push SET button while pushing CHECK button.
2. Push [START/STOP] button.
Fig. 11-4-1
- 63 -
FILE NO. SVM-15074
11-4-2 Caution at Servicing
1. After using the service mode of remote controller finished, press the [
] button to reset the remote controller to
normal function.
2. After finished the diagnosis by the remote controller, turn OFF power supply and turn its ON again to reset the air
conditioner to normal operation. However, the check codes are not deleted from memory of the microcomputer.
3. After servicing finished, press [CLR] button of remote controller under service mode status to send code "7F" to the
indoor unit. The check code stored in memory is cleared.
Table 11-4-2
Block distinction
Check
code
Block
Operation of diagnosis function
Check
code
Cause of operation
Air
conditioner
status
Display flashing
error
Action and Judgment
Indoor P.C.
TA sensor ; The room
Operation
Flashes when
board.
temperature sensor is
continues.
error is detected. 2. In case of the sensor and its
short-Circuit or disconnection.
1. Check the sensor TA and connection.
connection is normal, check the
P.C. board.
TC sensor ; The heat
Operation
Flashes when
1. Check the sensor TC and connection.
exchanger temperature
continues.
error is detected. 2. In case of the sensor and its
sensor of the indoor unit
connection is normal, check the
is out of place, disconnection,
P.C. board.
short-circuit or migration.
Fan motor of the indoor unit
All OFF
is failure, lock-rotor, short-
Flashes when
1. Check the fan motor and connection.
error is detected. 2. In case of the motor and its
circuit, disconnection, etc.
connection is normal, check the
Or its circuit on P.C. board
P.C. board.
has problem.
Other trouble on the indoor
Depend on
Depend on
P.C. board.
cause of
cause of
failure.
failure.
- 64 -
Replace P.C. board.
FILE NO. SVM-15074
Block distinction
Check
code
Operation of diagnosis function
Check
code
Block
Serial signal
Air
conditioner
status
Cause of operation
1) Defective wiring of the
Action and Judgment
Display flashing
error
Indoor unit
Flashes when
and connecting
connecting cable or
operates
error is detected.
operate.
cable.
miss-wiring.
continue.
Flashing stop
Check connecting cable and correct
Outdoor unit
and outdoor unit
if defective wiring.
stop.
start to operate
Check 25A fuse of inverter P.C. board.
when the return
Check 3.15A fuse of inverter
signal from the
P.C. board.
2) Operation signal has not
send from the indoor unit
when operation start.
3) Outdoor unit has not
1) to 3) The outdoor unit never
send return signal to the
outdoor unit is
Check operation signal of the indoor
indoor unit when operation
normal.
unit by using diode. Measure voltage
started.
at terminal block of the indoor unit
4) Return signal from the
between No.2 and No.3 (or L2 and S)
outdoor unit is stop during
If signal is varied 15-60V continuously,
operation.
replace inverter P.C. board.
Some protector
If signal is not varied, replace indoor
(hardware, if exist) of the
P.C. board.
outdoor unit open
4) The outdoor unit abnormal stop at
circuit of signal.
some time.
Signal circuit of indoor
If the other check codes are found
P.C. board or outdoor
concurrently, check them together.
P.C. board is failure
Check protector (hardware) such
in some period.
as Hi-Pressure switch,
Thermal-Relay, etc.
Check refrigerant amount or any
possibility case which may caused
Note : Operation signal of the indoor unit shall be measured in the sending period as
high temperature or high pressure.
picture below.
Check operation signal of the indoor
Measured signal voltage by apply diode
VDC
unit by using diode. Measure voltage
Sending signal of the indoor unit when have not return
signal from the outdoor unit.
at terminal block of the indoor unit
between No.2 and No.3 (or L2 and S)
***
If signal is varied 15-60V continuously,
60
replace inverter P.C. board.
If signal is not varied, replace indoor
P.C. board.
3 minutes Delay, start
counting from power
supply ON or remote
OFF.
3 minutes stop
*
**
Voltage variation stop
or have not voltage
output.
15
0
3
4
7
8
Time (Min)
* Signal send only 1 minute and stop. Because of return signal from outdoor unit has not received.
** Signal resend again after 3 minutes stop. And the signal will send continuously.
** * 1 minute after resending, the indoor unit display flashes error.
- 65 -
FILE NO. SVM-15074
Block distinction
Check
code
Block
Operation of diagnosis function
Check
code
Cause of operation
Outdoor P.C.
Current on inverter circuit
board
is over limit in short time.
Air
conditioner
status
All OFF
Flashes after
error is detected
8 times*.
Inverter P.C. board is
Action and Judgment
Display flashing
error
1. Remove connecting lead wire of the
compressor, and operate again.
2. If outdoor fan does not operate or
operate but stop after some period,
failure, IPM shortage, etc.
Compressor current is
replace the inverter P.C. board.
higher than limitation,
3. If outdoor fan operates normally,
measure 3-Phase output of inverter
lock rotor, etc.
P.C. board (150-270VAC) at the
connecting lead wire of compressor.
4. If 3-Phase output is abnormal, replace
inverter P.C.Board.
5. If 3-Phase output is normal, replace
compressor. (lock rotor, etc.)
Compressor position-detect
All OFF
Flashes after
circuit error or short-circuit
error is detected
between winding of
8 times*.
compressor.
1. Remove connecting lead wire of the
compressor, and operate again.
2. If outdoor fan does not operate or
operation but stop after some period,
replace the inverter P.C. board.
3. If outdoor fan operates normally,
measure resistance of compressor
winding. If circuit is shortage, replace
the compressor.
Current-detect circuit of
All OFF
inverter P.C. board error.
TE sensor ; The heat
All OFF
Flashes after
Even if trying to operate again, all
error is detected
operations stop, replace inverter
4 times*.
P.C. board.
Flashes after
1. Check sensors TE, TS and connection.
exchanger temperature
error is detected
2. In case of the sensors and its
sensor of the outdoor unit
4 times*.
either TS sensor ; Suction
connection is normal, check the
inverter P.C. board.
pipe temperature sensor,
out of place, disconnection
or shortage.
TD sensor ; Discharge pipe
All OFF
Flashes after
1. Check sensors TD and connection.
temperature sensor is
error is detected
2. In case of the sensor and its
disconnection or shortage.
4 times*.
connection is normal, check the
inverter P.C. board.
Outdoor fan failure or its
All OFF
Flashes after
drive-circuit on the inverter
error is detected
P.C. board failure.
8 times*.
1. Check the motor, measure winding
resistance, shortage or lock rotor.
2. Check the inverter P.C. board.
TO sensor ; The outdoor
Operation
Record error
1. Check sensors TO and connection.
temperature sensor is
continues.
after detected
2. In case of the sensor and its
disconnection or shortage.
4 times*.
connection is normal, check the
But does not
inverter P.C. board.
flash display.
- 66 -
FILE NO. SVM-15074
Block distinction
Check
code
Block
Operation of diagnosis function
Check
code
Air
conditioner
status
Cause of operation
Compressor drive output error.
All OFF
Action and Judgment
Display flashing
error
Flashes after
1. Check installation conditions such as
(Relation of voltage, current
error is detected
packed valve opening, refrigerant
and frequency is abnormal)
8 times*.
amount and power supply (rate +10%,
Overloading operation of
both of operation and non operation
compressor caused by
condition).
over-charge refrigerant,
2. Check P.M.V. by measure the
P.M.V. failure, etc.
resistance of the coil and confirm its
Compressor failure (High
operation (sound of initial
current).
operation, etc.)
3. Observe any possibility cause which
may affect operation load of
compressor.
4. Operate again. If compressor
operation is failure when 20 seconds
passed (count time from operation
starting of compressor), replace
compressor.
* 4 or 8 times ; When first error is detected, error is count as 1 time, then once operation is stop and re-started.
After re-starting operation within 6 minutes, if same error is detected, error count is add (count become 2 times)
When error count comes 4 or 8 times, record error to check code. But after re-starting operation, if no error is
detected and air conditioner can operate more than 6 minutes, error count is cleared.
1. Check power supply (Rate + 10%)
The others
Return signal of the outdoor
Indoor unit
Flashes when
(including
unit has been sent when
operates
error is detected. 2. If the air conditioner repeat operates
compressor)
operation start. But after
continue.
Flashing stop
and stop with interval of approx. 10
that, signal is stop some time.
Outdoor unit
and outdoor unit
to 40 minutes.
stop.
Instantaneous power
start to operate
Check protector (hardware) such
failure.
when the return
as Hi-Pressure switch,
Some protector
signal from the
Thermal-Relay, etc.
(hardware) of the
outdoor unit is
Check refrigerant amount, packed
outdoor unit open
normal.
valve opening and any possibility
circuit of signal.
cause which may affect high
Signal circuit of indoor
temperature or high pressure.
P.C. board or outdoor
3. Check operation signal of the indoor
P.C. board is failure
unit by using diode. Measure voltage
in some period.
at terminal block of the indoor unit
between No.2 and No.3 (or L2 and S)
If signal is varied 15-60V continuously,
replace inverter P.C. board.
If signal is not varied, replace indoor
P.C. board.
- 67 -
FILE NO. SVM-15074
Block distinction
Check
code
Block
Operation of diagnosis function
Check
code
Cause of operation
Compressor does not rotate.
Air
conditioner
status
All OFF
Display
flashing error
Flashes after
Because of missed wiring,
error is detected
missed phase or shortage.
8 times*.
Action and Judgment
1. Remove connecting lead wire of the
compressor, and operate again.
2. If outdoor fan does not operate or
operation but stop after some period,
replace the inverter P.C. board.
3. If outdoor fan operates normally,
measure 3-Phase output of inverter
P.C. board (150-270VAC) at the
connecting lead wire of compressor.
4. If 3-Phase output is abnormal, replace
inverter P.C.Board.
5. If 3-Phase output is normal, measure
resistance of compressor winding.
6. If winding is shortage, replace the
compressor.
Discharge temperature
All OFF
o
exceeded 117 C.
Flashes after
1. Check sensors TD.
error is detected
2. Check refrigerant amount.
4 times*.
3. Check P.M.V. by measure the
resistance of the coil and confirm its
operation (sound of initial
operation, etc.)
4. Observe any possibility cause which
may affect high temperature of
compressor.
Compressor is high current
All OFF
Flashes after
1. Check installation conditions such as
though operation Hz is
error is detected
packed valve opening, refrigerant
decreased to minimum limit.
8 times*.
amount and power supply (rate +10%,
Installation problem.
both of operation and non operation
Instantaneous power
condition).
failure.
2. Check P.M.V. by measure the
Refrigeration cycle
resistance of the coil and confirm its
problem.
operation (sound of initial
Compressor break down.
operation, etc.)
3. Observe any possibility cause which
Compressor failure (High
may affect high current of compressor.
current).operation, etc.)
4. If 1, 2 and 3 are normal, replace
compressor.
- 68 -
FILE NO. SVM-15074
Block distinction
Check
code
Block
Operation of diagnosis function
Check
code
Cause of operation
Return signal of the outdoor
unit has been sent when
operation start. But after
that, signal is stop some time.
Air
conditioner
status
Indoor unit
operates
continue.
Outdoor unit
stop.
Instantaneous power
failure.
Some protector
(hardware) of the
outdoor unit open circuit
Display
flashing error
Flashes when
error is detected
11 times*.
Flashing stop
and outdoor unit
start to operate
when the return
signal from the
outdoor unit is
normal.
Action and Judgment
1.. Check power supply (Rate +10%)
2.. If the air conditioner repeat operat
and stop with interval of approx. 10
to 40 minutes.
Check protector (hardware) such
as Hi-Pressure switch,
Thermal-Relay, etc.
Check refrigerant amount, packed
valve opening and any possibility
of signal.
cause which may affect high
Signal circuit of indoor
temperature or high pressure.
P.C. board or outdoor
3.. Check operation signal of the indo
P.C. board is failure in
unit by using diode. Measure voltage
some period.
at terminal block of the indoor unit
TE, TC high tmperature
between No.2 and No.3 (or L2 and S)
TE for cooling operation
If signal is varied 15-60V continuously,
TC for heating operation.
replace inverter P.C. board.
If signal is not varied, replace indoor
P.C. board.
4. Check and clean heat exchanger
area Indoor and Outdoor unit.
* 4, 8 or 11 times ; When first error is detected, error is count as 1 time, then once operation is stop and re-started.
After re-starting operation within 6 minutes, if same error is detected, error count is add (count become 2 times)
When error count comes 4, 8 or 11 times, record error to check code. But after re-starting operation, if no error
is detected and air conditioner can operate more than 6 minutes, error count is cleared.
- 69 -
FILE NO. SVM-15074
11-5. Judgment of Trouble by Symptom
11-5-1. Wiring Failure (Interconnecting and Serial Signal
Wire)(1) Outdoor unit does not operate
1) Is the voltage between d and e of the indoor terminal block varied?
2) Confirm that transmission from indoor unit to outdoor unit is correctly performed based upon the
following diagram.
NOTE
• Measurement should be performed 2 minutes and 30 seconds after starting of the operation.
• Be sure to prepare a diode for judgment.
Terminal block at indoor side
Red
3
S5277G or equivalent (G or J type)
(Diode with rated voltage of 400V
or more is acceptable.)
S5277G
White
2
1
Tester
Terminal block
Normal time : Voltage swings between DC15 and 60V. ........................ Inverter Assembly check
Abnormal time : Voltage does not vary.
(2) Outdoor unit stops in a little while after operation started
<Check procedure> Select phenomena described below.
1) The outdoor unit stops 10 to 20 minutes after operation started, and 10 minutes or more are required to
restart the unit.
Gas circulation amount is down.
Gas shortage
Gas leak
Measure gas pressure.
Pipe clogging
Thermo. operation of compressor
2) If the unit stops once, it does not operate until the power will be turned on again.
To item of Outdoor unit does not operate.
3) The outdoor unit stops 10 minutes to 1 hour after operation started, and an alarm is displayed.
(Discharge temp. error check code 03, 1E Sensor temp. error check code 02, 1C)
Gas leak
P.M.V. is defective.
Miswiring of connecting wires of indoor/outdoor units
Clogging of pipe and coming-off of TC sensor
- 70 -
Refer to the chart in 11-6.
FILE NO. SVM-15074
Service Support Function (LED Display, Switch Operation)
1. Outline
A various setup and operation check can be performed by DIP switches at 2 positions (SW801, SW802)
and the pushdown button switches (SW800) on the outdoor control P.C. board MCC-5071.
Operation part
Part No.
Specifications
Operation contents
SW800
Pushdown button switch
SW801
DIP switch
SW802
DIP switch
Performs the specific operation to check maintenance and various initial settings.
Display part
Part No.
Specifications
Operation contents
D502, D511, D517
Orange LED
Indoor/Outdoor communication (Serial communication) signal display
(Receive signal from indoor signal)
D501, D508, D515
Green LED
Indoor/Outdoor communication (Serial communication) signal display
(Send signal from outdoor signal)
D800
Green LED
D801 to D805
Red LED
(1) Power-ON display
When the power of the outdoor unit is turned on, D800 LED goes on.
(2) Error display
When the outdoor controller detects some errors, some LEDs go on
or flash according to the error as described in Error display table.
(Refer to 11-6)
(3) Specific operation display
When SW800 is pushed and a specific operation is operated, some
LEDs go on or flash.
∗ Every LED is colorless when it goes off.
D502, D511, D517 (Orange LED)
: Serial signal (Indoor → Outdoor)
Control P.C.B MCC-5071
D501, D508, D515 (Green LED)
: Serial signal (Outdoor → Indoor)
D800 (Green LED)
D801 (Red LED)
D802 (Red LED)
D803 (Red LED)
D804 (Red LED)
D805 (Red LED)
: Error display / various display
SW800,SW801,SW802
: Specific operation switch /
Selection of various initial settings
- 71 -
FILE NO. SVM-15074
11-6. Trouble Diagnosis by Outdoor LED
For the outdoor unit, the self-diagnosis is possible by LED (Green) and five LEDs (Red).
∗ LED (Green)(D800) and LEDs (Red)(D801 to D805) are provided on the control P.C. board MCC-5071.
1. If there is an error, LED (Red or Green) goes on or flashes according to the error as described in the below table.
2. When there are two or more errors, LEDs go on cyclically.
3. Usually, LED (Green)(D800) goes on.
(Legend)
 D800 (Green)
{ D801 (Red)
z D802 (Red)
z D803 (Red)
z D804 (Red)
z D805 (Red)
z : Go off, { : Go on,  : Flash
PMV. : Pulse Motor Valve
LED display
∗1
∗2
∗2
∗2
D800
D801
D802
D803
D804
D805
{
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
{
z
z
{
{
{
{
z
z
z
z
z
z
{
{
{
{
{
{
{
z
z
z
z
z
z
z
z
{
{
{
{
{
{
{
{
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
{
{
{
{
{
{
{
{
{
{
{



{
z
z
z
{
z
z
z
{
{
{
z
z
z
z
{
{
{
{
z
z
{
{
{
{
{
{
{
z
z
z
z
z
z
{
{
{
z
{
z
{
z
z
z
z
z
z
{
z
z
z
z
z
z
Indoor
check code
Description
—
During normal operation
07
Case thermo. operation, Power supply error
14
Driving element short-circuit
16
Position detection circuit error
17
Current detection circuit error
1C
Compressor system error, Compressor lock
19
Discharge temp. sensor (TD) error
1A
Fan system error
1B
Outside temp. sensor (TO) error
1D
Compressor lock
1E
Discharge temp. error, gas leakage
1F
Compressor break down
18
Suction temp. sensor (TS) error
18
Heat exchanger temp. sensor (TE) error
1C
A room gas side temp. sensor (TGa) error
1C
B room gas side temp. sensor (TGb) error
1C
C room gas side temp. sensor (TGc) error
1C
Gas leak detection, PMV error
1C
Communication error between MCU
1C
Communication error between MCU
1C
Communication error between MCU
20
PMV error for A room
20
PMV error for B room
20
PMV error for C room
21
High pressure SW system error
∗1: Back-up operation is performed without error display of the indoor unit.
∗2: Operated normally when the air conditioners in other rooms are driven.
- 72 -
FILE NO. SVM-15074
Check
code
Outdoor
LED display
[07]
z{zzzz
Check and troubleshooting
(Item without special mention indicates part of outdoor unit.)
[Case thermo operation, Power supply error ]
Is AC mains voltage correct?
(198 to 264V)
NO
Confirm power supply
construction. etc.
YES
Are CN609 of P.C. board MCC-1571
connection and case thermostat correct?
NO
Correct connector.
Case thermostat error → Replace.
YES
Short each pins of CN609.
Can compressor operate?
NO
Check ourdoor P.C.B MCC-1571.
Defect → Replace.
YES
Is there gas leak?
Is there refrigerant shortage?
YES
Repair defective position.
Recharge refrigerant.
NO
NO
Is service valve fully opened?
Open service valve fully.
YES
NO
Is PMV under correct conditions?
Correct defective position.
Replace defective part.
YES
Check crushed or broken pipe.
Defect → Correct and Replace.
[14]
zz{zzz
[Short-circuit of compressor drive element]
Are connections of
compressor lead and reactor correct?
(Check referring to the Wiring diagram.)
NO
Correct wiring.
YES
Does the same error occur in operation
without compressor lead?
YES
Replace outdoor P.C.B MCC-1571.
NO
Check compressor. (Rare short, etc.)
Defect → Replace.
[16]
z{{zzz
[Position detection circuit error]
Check outdoor P.C.B MCC-1571.
Defect → Replace.
[17]
zzz{zz
[Current detection circuit error]
Check outdoor P.C.B MCC-1571.
Defect → Replace.
- 73 -
FILE NO. SVM-15074
Check
code
Outdoor
LED display
[18]
Check and troubleshooting
(Item without special mention indicates part of outdoor unit.)
∗ There is a possibility that it is one of the following errors.
Confirm LED on outdoor P.C. board to judge which error it is.
Heat exchanger temp. sensor (TE) error, Suction temp. sensor (TS) error
zzz{{z
[Suction temp. sensor (TS) error]
Is connection of CN603
on P.C.B MCC-5071 correct?
Is resistance value of TS sensor correct?
NO
Correct connector.
Sensor error → Replace.
YES
Check outdoor P.C.B MCC-5071
Defect → Replace.
z{z{{z
[Heat exchanger temp. sensor (TE) error]
Is connection of CN601
on P.C.B MCC-5071 correct?
Is resistance value of TE sensor correct?
NO
Correct connector.
Sensor error → Replace.
YES
Check outdoor P.C.B MCC-5071
Defect → Replace.
[19]
zz{{zz
[Discharge temp. sensor (TD) error]
Is connection of CN600
on P.C.B MCC-5071 correct?
Is resistance value of TD sensor correct?
NO
Correct connector.
Sensor error → Replace.
YES
Check outdoor P.C.B MCC-5071
Defect → Replace.
[1A]
z{{{zz
[Fan system error]
Is AC mains voltage correct?
(198 to 264V)
NO
Check wiring construction.
Ask repair of power supply.
YES
Rotate shaft of the fan motor by hands
during power-OFF, Can it rotate smoothly?
Is coil resistance of fan motor correct?
Between red and white lead wire :12 to 20Ω.
Between white and black lead wire :12 to 20Ω.
Between black and red lead wire :12 to 20Ω.
NO
NO
Check outdoor P.C.B MCC-1571
Defect → Replace.
Replace fan motor.
[1B]
zzzz{z
[Outside temp. sensor (TO) error]
Is connection of CN602
on P.C.B MCC-5071 correct?
Is resistance value of TO sensor correct?
NO
Correct connector.
Sensor error → Replace.
YES
Check outdoor P.C.B MCC-5071
Defect → Replace.
- 74 -
FILE NO. SVM-15074
Check
code
Outdoor
LED display
[1C]
Check and troubleshooting
(Item without special mention indicates part of outdoor unit.)
∗ There is a possibility that it is one of the following errors.
Confirm LED on outdoor P.C. board to judge which error it is.
Compressor system error, Compressor lock, Gas side temp. sensor (TGa to TGc)
error, Gas leakage, PMV error
z{z{zz
[Compressor system error, Compressor lock]
NO
Is AC mains voltage correct?
(198 to 264V)
Check wiring construction.
Ask repair of power supply.
YES
Is wire connection correct?
Compressor lead
(Board side, Compressor Side),
Reactor lead, Power supply lead.
NO
Check wire connection
and correct it.
YES
YES
Is compressor under correct condition?
1
NO
NO
Is there refrigerant stagnation?
Compressor lock → Replace.
YES
NO
Does PMV correctly operate?
Check TE, TS sensor and PMV.
Detect → Replace..
YES
1
1
Are the power devices on P.C. board
MCC-1571 screwed without looseness?
(Rear sides of Q201, Q300, Q650, DB01, DB02)
Are radiation grease properly applied?
(Q201)
NO
YES
Apply radiation grease to objective parts.
Retightening of screws.
(Be sure not to forget to attach insulating sheet
between heat sink and Q300, Q650, DB01, DB02)
Does something block
the ventilation around the heat sink?
Does something air flow from the fan?
YES
Remove blocking matter.
Correct short-circuit.
NO
Check outdoor P.C.B MCC-1571 and MCC-5071.
Defect → Replace
- 75 -
FILE NO. SVM-15074
Check
code
[1C]
(Continued)
Outdoor
LED display
Check and troubleshooting
(Item without special mention indicates part of outdoor unit.)
[A room gas side temp. sensor (TGa) error]
Is connection of CN604
on P.C.B MCC-5071 correct?
Is resistance value of TGa sensor correct?
NO
YES
Correct connector.
Sensor error → Replace.
Check outdoor P.C.B. MCC-5071.
Defect → Replace.
[B room gas side temp. sensor (TGb) error]
Is connection of CN605
on P.C.B MCC-5071 correct?
Is resistance value of TGb sensor correct?
NO
YES
Correct connector.
Sensor error → Replace.
Check outdoor P.C.B. MCC-5071.
Defect → Replace.
[C room gas side temp. sensor (TGc) error]
Is connection of CN606
on P.C.B MCC-5071 correct?
Is resistance value of TGc sensor correct?
NO
YES
Correct connector.
Sensor error → Replace.
Check outdoor P.C.B. MCC-5071.
Defect → Replace.
[Gas leak detection, PMV error]
Is there gas leak?
Is there refrigerant shortage?
NO
Is service valve fully opened?
YES
Is PMV under correct conditions?
YES
Is there crushed pipe?
YES
NO
NO
YES
Repair defective position.
Recharge refrigerant.
Open service valve fully.
Correct defective position.
Replace defective part.
Correct and replace piping.
NO
Check temp. sensor.
TS, TE, TG, TC
Error
Correct connector.
Sensor error → Replace.
OK
Check outdoor P.C.B. MCC-5071.
Defect → Replace
- 76 -
FILE NO. SVM-15074
Check
code
Outdoor
LED display
[1C]
z{{z{{
z{z{{{
(Continued)
Check and troubleshooting
(Item without special mention indicates part of outdoor unit.)
[Communication error between MCUs]
Are connections of CN802 on P.C.B MCC-5071
and CN802 on P.C.B MCC-1571 correct?
NO
Correct connection.
YES
Check outdoor P.C. Boards.
Defect → Replace.
zz{{{{
[Communication error between MCUs]
Are connections of CN804 on P.C.B MCC-5071
and CN800 on P.C.B MCC-1571 correct?
NO
Correct connection.
YES
Check outdoor P.C. Boards.
Defect → Replace.
[1D]
z{zz{z
[Compressor lock]
Is AC mains voltage correct?
(198 to 264V)
NO
Check wiring construction.
Ask repair of power supply.
NO
Check wire connection
and correct it.
YES
Check outdoor P.C.B MCC-1571.
Defect → Replace.
YES
Is wire connection correct?
Compressor lead
(Board side, Compressor Side),
Reactor lead, Power supply lead.
YES
Is compressor under correct condition?
NO
Is there refrigerant stagnation?
NO
Compressor lock → Replace.
YES
Does PMV correctly operate?
NO
Check TE, TS sensors and PMV.
Detect → Replace.
YES
Check outdoor P.C.B MCC-5071.
Defect → Replace.
[1E]
zz{z{z
[Discharge temp. error]
Is there gas leak?
Is there refrigerant shortage?
YES
Repair defective position.
Recharge refrigerant.
NO
Repair defective position.
Replace defective part.
YES
Remove and improve
the cause of overload.
NO
Correct connector.
Sensor error → Replace.
NO
Is PMV under correct conditions?
YES
Does an abnormal overload happen?
NO
Is connection of CN600 on P.C.B. MCC-5071?
Is resistance value of TD sensor correct?
YES
Check outdoor P.C.B MCC-5071.
Defect → Replace.
- 77 -
FILE NO. SVM-15074
Check
code
Outdoor
LED display
[1F]
z{{z{z
Check and troubleshooting
(Item without special mention indicates part of outdoor unit.)
[Compressor break down]
Is AC mains voltage correct?
(198 to 264V)
NO
Check wiring construction.
Ask repair of power supply.
NO
Check wire connection
and correct it.
YES
Remove and improve
the cause of overload.
YES
Is wire connection correct?
Compressor lead
(Board side, Compressor Side),
Reactor lead, Power supply lead.
YES
Does an abnormal overload happen?
NO
Check outdoor P.C.B MCC-1571.
Defect → Replace.
[20]
∗ There is a possibility that it is one of the following errors.
Confirm LED on outdoor P.C. board to judge which error
it is. PMV error for A room, B room, C room.
{zzzz
[PMV error for A room]
Is PMV under correct conditions?
NO
Repair defective position.
Replace defective part.
Error
Correct connector.
Sensor error → Replace.
YES
Check temp. sensor of A room indoor unit?
TA sensor, TC sensor
OK
Check outdoor P.C.B. MCC-5071
and indoor A room P.C. board.
Defect → Replace.
z{zzz
[PMV error for B room]
Is PMV under correct conditions?
NO
Repair defective position.
Replace defective part.
Error
Correct connector.
Sensor error → Replace.
YES
Check temp. sensor of B room indoor unit?
TA sensor, TC sensor
OK
Check outdoor P.C.B. MCC-5071
and indoor B room P.C. board.
Defect → Replace.
zz{zz
[PMV error for C room]
Is PMV under correct conditions?
NO
Repair defective position.
Replace defective part.
Error
Correct connector.
Sensor error → Replace.
YES
Check temp. sensor of C room indoor unit?
TA sensor, TC sensor
OK
Check outdoor P.C.B. MCC-5071
and indoor C room P.C. board.
Defect → Replace.
- 78 -
FILE NO. SVM-15074
Check
code
[21]
Outdoor
LED display
Check and troubleshooting
(Item without special mention indicates part of outdoor unit.)
∗ There is a possibility that it is one of the following errors.
Confirm LED on outdoor P.C. board to judge which error it is. (1) high-pressure SW system error,
(2) power supply error (Vdc), (3) high-pressure protective operation, (4) case thermo operation.
z{{{{{
[High pressure SW system error]
High pressure protective operation.
Doesn’t high pressure switch
operate?
NO
NO
Wiring check,
Correct.
Is circuit wiring normal?
YES
YES
Are parts of
high pressure switch normal?
NO
Parts check
Defective → Replace
YES
NO
Open service valve fully.
Is service valve fully opened?
YES
Reset the power supply and
then do a trial operation according
to the season.
B ← Cooling operation
C ← Heating operation
Check IPDU PC board
Defective → Replace
B Cooling operation.
Does cooling outdoor fan
normally operate?
NO
Is there no fan breakage
or coming-off?
YES
NO
YES
Repair defective position.
Connection of connectors,
IPDU, Fan motor, Wiring.
Is there any element
which blocks heat exchanger
of the outdoor unit?
Clogging of heat exchanger
Short circuit
YES
Elimination of
blocking element
NO
Overcharge of refrigerant/
Clogging/Pipe breakage/
Abnormal overload
C
Heating operation
Does the heating indoor fan
normally operate?
NO
Are connections of
connectors,capacitors
and fan motor normal?
YES
NO
YES
Is there any element which
blocks indoor heat exchanger?
Filter clogging
Clogging of heat exchanger
Short circuit
YES
Elimination of
blocking element
Repair
defective position.
NO
Clogging by refrigerant
overcharge/Pipe breakage/
Abnormal overload
Are characteristics
of TC and TCJ sensor
resistance value normal?
NO
YES
Check indoor P.C. board
Defective → Replace
- 79 -
Replace
TC or TCJ sensor.
FILE NO. SVM-15074
11-7. TROUBLESHOOTING
RAS-3M26S3AV-A
1. Before Troubleshooting
Each model corresponds to DRED (Demand response enabling device) by AS/NZS 4755.3.1.
DRM1, DRM2 and DRM3 are executed as follows, upon directions from the power company,
Be sure to confirm they are not operated before usually troubleshooting.
Air conditioner demand response
Demand response mode
DRM1
DRM2
DRM3
Description
Compressor off
E30m ≤ R × 0.50 × 0.5
E30m ≤ R × 0.75 × 0.5
*1: E30m = total electrical energy (kWh) used by the all conditioner for all purposes (including compressors,
controls and fans) over a 30 min period.
*2: R = rated input electrical power of the air conditioner (kW) at rated capacity in the mode in which it is
operating during the demand response event (i.e. cooling or heating).
2. Troubleshooting Procedure
When a symptom such as the following table is found without a check code is not displayed on the remote
controller, there is a possibility that a demand operation or demand P.C. board is failed, therefore diagnose it
according to the following diagram.
No.
Operating conditions of air conditioner
1
Each condition is within the operating condition,
but the compressor does not work.
2
Cooling/Heating of the room is poor
Diagnosis when compressor does not work
Diagnosis when cooling/heating is poor
Disconnect the
connecting wiring
of DRED.
Disconnect the
connecting wiring
of DRED.
Compressor works.
YES
Normal
(Demand operation)
or DRED is failed.
Cooling/heating
improved.
Normal
(Demand operation)
or DRED is failed.
NO
NO
LED of the demand
P.C. board is on.
YES
NO
Abnormal cycle
system, etc. *1
Demand
P.C. board is failed.
∗ Refer to next page
YES
Remove wiring of
CN105 on DRED
P.C. board.
Compressor works.
YES
Exchange of
Demand P.C. board
NO
Indoor unit
satisfies ON conditions
of the compressor.
NO
Indoor thermostat
is off.
- 80 -
YES
Inverter Ass’y
is failed *1
When a failure with *1 appears,
advance the diagnosis further according
to the basic service manual.
FILE NO. SVM-15074
Troubleshooting for Demand Unit
Demand
P.C. board
is failed.
Fuse
F100 is melted.
YES Exchange of transformer,
exchange of Demand
P.C. board
NO
Take off wiring of
CN102. Short-circuit is
found between “~” and
“~” of DB100.
YES
Exchange of transformer,
exchange of Demand
P.C. board
NO
Short-circuit is
found between 1 and 2
pins of connector connected to
CN102 of
transformer.
YES
Exchange of transformer
NO
Exchange of
Demand
P.C. board
- 81 -
FILE NO. SVM-15074
11-8. Inspection of the Main Parts
[1] Sensor characteristic table
100
Resistance value (kΩ)
90
80
TD
70
TD
: Discharge temp. sensor
TO
: Outdoor temp. sensor
TE
: Outdoor heat exchanger temp. sensor
TS
: Suction temp. sensor
TGa to TGc : Gas side temp. sensor
60
50
40
30
20
TO, TE, TS, TGa to TGc
10
0
0
10
20
30
40
50
Temperature (˚C)
Outdoor Unit
No.
1
Part name
Compressor
(Model : DA220A2T-20LD)
Checking procedure
Measure the resistance value of each winding by using the tester.
Red
Position
Red - White
White - Black
Black - Red
White
2
Outdoor fan motor
(Model : IDF-280-A60-1)
Resistance value
0.61 ± 0.03Ω
Black
Under 20°C
Measure the resistance value of winding by using the tester.
Red
White
Black
Position
Red - White
White - Black
Black - Red
Resistance value
14.8 ± 1.5Ω
For details, refer to Section 11-10.
3
Compressor thermo. Bimetal type
(Model : CS-12AL)
Check conduction by using the tester.
4
High pressure switch
(Model : ACB-4UB83W)
Check conduction by using the tester.
5
Outdoor temperature sensor (TO),
pipe temperature sensor
(TGa, TGb, TGc),
discharge temperature sensor (TD),
suction temperature sensor (TS),
evaporator temperature sensor
(TE),
Disconnect the connector, and measure resistance value with the tester.
(Normal temperature)
Sensor
Temperature
TD (kΩ)
TO, TE, TS (kΩ)
TGa to TGc (kΩ)
- 82 -
10°C
20°C
25°C
40°C
50°C
105
20.6
20.0
64
12.6
12.5
51
10.0
10.0
27
5.1
5.3
18
3.4
3.6
FILE NO. SVM-15074
11-9. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad
1. Symptom
• Outdoor fan motor does not rotate.
• Outdoor fan motor stops within several tens seconds though it started rotating.
• Outdoor fan motor rotates or does not rotate according to the position where the fan stopped, etc.
Remote controller check code “02 : Outdoor block, 1A : Outdoor fan drive system error”
2. Cause
The following causes are considered when the outdoor fan motor does not normally rotate.
1) Mechanical lock of the outdoor fan motor
2) Winding error of the outdoor fan motor
3) Position-detect circuit error inside of the outdoor fan motor
4) Motor drive circuit error of the outdoor P.C. board
3. How to simply judge whether outdoor fan motor is good or bad
Turn OFF the breaker.
Disconnect connector of the outdoor fan motor
from P.C. board, MCC-1436.
Does the fan rotate without trouble
when rotating it with hands?
NO
YES
If the resistance value between
1 (Red lead)
– 2 (White lead)
2 (White lead) – 3 (Black lead)
3 (Black lead) – 1 (Red lead)
of the connector
(CN300 : Motor winding)
is 13.3 to 16.3Ω, it is normal.
NO
YES
Fan motor error
Fan motor is normal.
(Outdoor P.C. board error)
NOTE
However, GND circuit error inside of the motor may be accepted in some cases when the above check is
performed.
When the fan motor does not become normal even if P.C. board is replaced, replace the outdoor fan motor.
- 83 -
FILE NO. SVM-15074
<MCC-1571>
Electrolytic capacitors
(760µF/400V)
Lead wire for grounding
P09 (Black)
Fan motor output
CN300
(Red, White, Black)
Compressor
output terminals
CN200
CN201
CN202
Power supply protective fuse
F01 (250V, 25A)
Inter-unit wire protective fuse
F03 (250V, 10A)
Power supply
connecting lead wire
P01 (Red)
P02 (White)
Inter-unit wire connector
CN04 (White)
4-way valve protective fuse
F700 (250V, 3.15A, plastic case)
Reactor connecting
connectors
Heater output connector
CN703 (Gray)
Power supply circuit protective fuse
F100
(250V, 3.15A plastic case)
Case thermo connector
CN609 (Blue)
Lead wire for High pressure
switch connecting connector
CN690 (Black)
4-way valve connector
CN701 (White)
UART communication connector
CN802 (Blue)
- 84 -
UART communication connector
CN800 (White)
FILE NO. SVM-15074
<MCC-5071>
Power supply
connecting connector
CN01 (Red)
Indoor/Outdoor communication wire
Protective fuse
F01 (250V, 3.15A ,plastic case)
Lead wire for Indoor/
Outdoor communication
P01 (Yellow)
P02 (Red)
P03 (Green)
P04 (Blue)
P05 (Gray)
Indoor/Outdoor communication signal LED
D502, D511, D517, D524
(Orange,Indoor → Outdoor)
D501, D508, D515, D520
(Green,Outdoor → Indoor)
Demand response connector
CN609 (Pink)
Power,
Alarm display LED
D800 (Green)
D801 to D805 (Red)
Temp. sensor connector
TS CN603 (White)
TO CN602 (White)
TE CN601 (White)
TD CN600 (White)
Specific
pecific operation
and Initial set SW
SW800
SW801
SW802
TGC CN606 (Green)
TGB CN605 (Red)
TGA CN604 (Yellow)
Lead
ead wire for grounding
P07 (Black)
PMV connector
A room CN700 (Yellow)
B room CN701 (Red)
C room CN702 (Green)
UART communication connector
CN804 (White)
UART communication connector
CN802 (Blue)
- 85 -
FILE NO. SVM-15074
12. HOW TO REPLACE THE MAIN PARTS
12-1. Outdoor Unit
No.
Part name
Procedure
1
Common
procedure
CAUTION
Remarks
Front panel
Never forget to put on the gloves at working time;
otherwise an injury will be caused by the parts etc.
1. Detachment
1) Stop operation of the air conditioner, and turn
off the switch of the breaker.
2) Remove the front panel.
(Hexagonal screw Ø4 × 10, 5 pcs.)
• After taking off screws, draw the front panel
2 to this side and remove it while pulling the
front panel downward 1 .
3) Remove the power supply cable and the
indoor/outdoor connecting wire from the cord
clamp and the terminal.
4) Remove the upper cabinet.
(Hexagonal screw Ø4 × 10, 4 pcs.)
Front panel
2. Attachment
1) Mount the upper cabinet.
(Hexagonal screw Ø4 × 10, 4 pcs.)
In this time, insert the fin guard at rear side
between the front panel and the heat
exchanger (at rear side).
2) Connect the power supply cable and the
indoor/outdoor connecting wire to the terminal
and then fix them with the cord clamp.
3) Mount the front panel.
(Hexagonal screw Ø4 × 10, 5 pcs.)
(1) Downward
(2) This side
Upper cabinet
Insert the fin guard at rear side
between the front panel and the
heat exchanger (at rear side).
- 86 -
FILE NO. SVM-15074
No.
Part name
2
Discharge
port cabinet
Procedure
Remarks
1. Detachment
1) Perform work of Detachment 1 of 1 .
2) Take off screws for the discharge port cabinet
and the partition plate. (ST1T Ø4 × 8, 3 pcs.)
3) Take off screws for the discharge port cabinet
and the bottom plate.
(Hexagonal screw Ø4 × 10, 2 pcs.)
4) Take off screws for the discharge port cabinet
and the motor base. (ST1T Ø4 × 8, 2 pcs.)
5) Take off screw for the discharge port cabinet
and the heat exchanger.
(ST1T Ø4 × 8, 1 pc.)
6) Take off screws for the discharge port cabinet
and the fin guard.
(Hexagonal screw Ø4 × 10, 2 pcs.)
Heat exchanger
Fin guard
Motor base
Partition plate
Discharge port cabinet
3
Rear cabinet
1. Detachment
1) Perform work of Detachment 1 of 1 .
2) Take off screw for the rear cabinet and the
valve fixed board.
(Hexagonal screw Ø4 × 10, 2 pcs.)
3) Take off screw for the rear cabinet and the
anchor board.
(Hexagonal screw Ø4 × 10, 1 pc.)
4) Take off screws for the rear cabinet and the
heat exchanger.
(Hexagonal screw Ø4 × 10, 3 pcs.)
5) Remove the rear cabinet by shifting it
obliquely backward and upward.
Rear cabinet
Inverter
assembly
Rear cabinet
- 87 -
FILE NO. SVM-15074
No.
Part name
4
Inverter
assembly
Procedure
Remarks
1) Perform works Detachment 1 of 1 and 3 .
Inverter fixed board
Fixing
screw
WARNING
Never disassemble the inverter until 5 minutes
after the power supply was turned off because
there is a fear that an electric shock may occur.
NOTE)
When working, be sure to use the insulate tools
and put on the insulated gloves.
2) Take off screw for the inverter assembly and the
valve fixed board. (ST1T Ø4 × 8, 1 pc.)
3) Take off the screw fixed to the terminal fixed board
in order to remove the inverter fixed board.
(ST1T Ø4 × 8, 1 pc.)
4) Remove the connectors that are connected from
CDB P.C. board to the other parts.
CN600: TD sensor (3P, White)
CN601: TE sensor (2P, White)
CN602: TO sensor (2P, White)
CN603: TS sensor (3P, White)
CN604: TGa sensor (2P, Yellow)
CN605: TGb sensor (2P, Red)
CN606: TGc sensor (2P, Green)
CN609: Demand response connector (3P, Pink)
CN700: PMV coil (6P, Yellow)
CN701: PMV coil (6P, Red)
CN702: PMV coil (6P, Green)
Valve fixing board
Fixing screw
CDB P.C. board
Temperature sensor
PMV coil
5) Cut the bundling band that binds the PMV coil and
the relay lead wire.
6) Remove the connectors, relay connector and the
lead wire that are connected from IPDU P.C. board
to the other parts.
CN701 : 4-way valve coil (2P, White)
Relay connector for reactor to mount the partition
plate (2P: White)
CN609 : Compressor case thermo. (2P: White)
CN690 : Relay connector for High pressure
switch (2P: White)
Bundling band
DI P.C. board
4-way coil
7) Remove connectors that are connected from the
fan motor to the fan motor relay P.C. board.
• Unlock the lock of the housing unit and then
remove the connectors.
Fan motor relay connector
- 88 -
FILE NO. SVM-15074
No.
Part name
4
Inverter
assembly
(Continued)
Remarks
Procedure
8) Remove the soundproof plate (upper).
9) Remove the terminal cover of the compressor
and then remove the compressor lead of the
compressor.
10) Pull up the inverter assembly and then remove it.
Soundproof plate (upper)
Reactor cover side
Compressor lead
Case thermo
Inverter box side
Black
∗ Hold up both the reactor cover side and the
inverter box side and then remove the inverter
assembly upward.
∗ Caution to mount the inverter assembly
When mounting the inverter assembly to the
partition plate, be sure to do hooking.
Hook
Partition cover
NOTE)
Using the bundling band on the market, be sure
to bind the portions which were bound before.
- 89 -
White
Red
FILE NO. SVM-15074
No.
5
Part name
CDB P.C.
board
Procedure
1) Perform works of Detachment 1 of 1 and 4)
of 4 .
CAUTION
Remarks
Power supply
connector
Terminal relay
connector
CDB P.C. board
Never disassemble the inverter until 5 minutes
after the power supply was turned off because
there is a fear that an electric shock may occur.
2) Remove the connector and the relay connector
that are connected from CDB P.C. board to
IPDU P.C. board, power supply and the interunit wire.
CN802: UART (5P, Blue)
CN804: UART (5P, White)
CN01: Power supply (3P, Red)
Terminal relay connector (6P, White)
∗ Unlock the lock of the housing unit and
then remove the connectors.
3) Remove the earth wire of CDB P.C. board
(Truss head B tight Ø4 × 6, 1 pc.)
4) Remove CDB P.C. board from CDB fixed
board.
5) Mount a new CDB P.C. board.
∗ When connecting the connectors on CDB
P.C. board to support CDB fixed board with
hand.
6
IPDU
P.C. board
1) Perform works of Detachment 1 of 1 , 3) of
2 , 4 and 2), 3) of 5 .
CAUTION
UART
(CN804)
UART
(CN802)
CDB fixed board
Earth screw
Reactor relay connector
Compressor
4-way
lead
IPDU
valve coil
P.C. board
Never disassemble the inverter until 5 minutes
after the power supply was turned off because
there is a fear that an electric shock may occur.
2) Take off screw for CDB fixed board and the
inverter box. (ST1T Ø4 × 8, 1 pc.)
3) Remove CDB P.C. board assembly.
4) Remove the connectors connected to IPDU
P.C. board. (4-way valve coil, compressor
case thermo, UART × 2, Inter-unit wire)
5) Remove the relay connector for fan
motor, reactor, and High pressure switch.
6) Remove the lead wire connected to IPDU
P.C. board.
(Tightening torque: 1.47 ± 0.1 N•m)
Compressor lead
U : CN200, Red
V : CN201, White
W : CN202, Black
Remove the power supply cable from the
power supply terminal block.
Power supply lead L: Red
Power supply lead N: White
- 90 -
Compressor UART
case thermo
Fan motor
relay connector
High pressure switch relay connector
Power supply terminal block
FILE NO. SVM-15074
No.
6
Procedure
Part name
IPDU P.C.
board
(Continued)
Remarks
7) Remove the earth wire of IPDU P.C. board.
(Truss head B tight screw Ø4 × 6, 1 pc.).
8) Take off fixing screws for IPDU P.C. board.
(Flange nut to fix element Ø3 × 16, 7 pcs.: Pan
head S tight screw to fix P.C. board
Ø3 × 20, 1 pc.)
9) Remove IPDU P.C. board. (3 supporters)
Fixing screws
for element
(7 positions)
Earth screw
NOTE)
Be careful that IPDU P.C. board is difficult to be
taken out by radiating grease for the heat sink.
10) Mount a new IPDU P.C. board.
IPDU P.C. board
fixing screw
NOTE)
• Take note that the compressor lead V:
CN201 (white) and the reactor lead CN05,
CN06 are correctly attached.
(For the compressor lead, the transparent
sleeve is attached to the circular terminal,
and for the reactor lead, the transparent
sleeve is not attached to the circular terminal.)
• Be sure not to forget to attach the Sub heat
sink and also the rediating sheet.
(If you apply a little amount of radiating
grease beforehand to the rear side of the
insulation sheet, the attaching work to the
heat sink will become easy.)
- 91 -
Supporters
(3 positions)
IPDU P.C. board
Radiating grease
Sub heat sink
Rediating sheet
FILE NO. SVM-15074
No.
Part name
7
Replacement
of reactor
Procedure
Remarks
1. Reactor to be attached to the inverter
assembly
Reactor cover
Reactor
relay connector
1) Perform works of Detachment 1 of 1 and
4 .
2) Remove the relay connector of the reactor.
3) Remove the reactor cover.
(Truss head B tight screw Ø4 × 6, 4 pcs.)
4) Remove the reactor. (ST1T Ø4 × 6, 2 pcs.)
5) Mount a new reactor.
Reactor cover
2. Reactor to be attached to the partition
plate
Reactor
Partition plate
1) Perform works of Detachment 1 of 1 and
4 .
2) Remove the reactor from the partition plate.
(ST1T Ø4 × 8, 2 pcs.)
3) Mount a new reactor.
∗ Caution to mount the inverter assembly.
When mounting the inverter assembly to the
partition plate, be sure to attach the hooks
certainly.
Hooks
Partition
plate
- 92 -
Reactor
FILE NO. SVM-15074
No.
Part name
Procedure
8
Fan motor
1) Perform works of Detachment 1 of 1 and 2 .
2) Take off flange nut which fixes the fan motor and
the propeller fan.
∗ The flange nut is loosened by turning it clockwise.
(To tighten the flange nut, turn it counterclockwise.)
3) Remove the propeller fan.
4) Remove the relay connector for fan motor from the
inverter.
5) Remove the fan motor lead from the fan motor
lead fixing rubber of the penetrating part of the
partition plate.
6) Take off the fixing screws (4 pcs. each) while
supporting the fan motor so that it does not fall.
∗ Caution to assembly of fan motor
• Tighten the flange nut with 4.95N•m (50kgf•cm).
• Adjust length of the fan motor lead fixing
rubber so that the slackened fan motor lead
does not come to contact with the propeller fan.
Put in the fan motor lead fixing rubber to the
partition plate so that the projection comes to
the refrigerating cycle side.
• There provided at 2 positions the grooves
to pass the fan motor lead wire into the
motor base. Use the lower groove.
Motor base
Remarks
Propeller fan
Loosened by
turning clockwise
Flange nut
Propeller fan
Fan motor
Detail A
Detail A
Lower groove
Fan motor relay connector
Fan motor lead fixing rubber
CAUTION
Using the metal band of the motor base, be sure
to fix the fan motor lead to the motor base so that
the fan motor lead does not come to contact with
the propeller fan.
- 93 -
Projection/Refrigerating
cycle side
Fan motor
FILE NO. SVM-15074
No.
Part name
9
Compressor
assembly
Procedure
Remarks
1. Removal of defective compressor
1) Perform work of Detachment 1 of 1 .
2) Recover the refrigerant gas from the outdoor
unit.
3) Perform works of 2 , 3 and 4 .
4) Remove the soundproof plate and TD sensor.
5) Take off fixing screw for the anchor board and
the partition plate. (ST1T Ø4 × 8, 1 pc.)
6) Take off fixing screws for the anchor board
and the heat exchanger.
(ST1T Ø4 × 8, 2 pcs.)
7) Take off fixing screws for the anchor board
and the valve fixing plate.
(ST1T Ø4 × 8, 2 pcs.)
8) Using a burner, remove the welded parts
(discharge pipe, suction pipe) connected to
the compressor.
Partition plate
Valve
fixing plate
Compressor
NOTE)
Take care that the electric parts, sensors,
compressor, and etc. are not caught by flame.
(Otherwise operation trouble may occur.)
Suction pipe
(Take off)
Discharge pipe
(Take off)
9) Pull out the refrigerating cycle upward.
NOTE)
Pull out the refrigerating cycle by two or more
persons.
10) Take off the compressor bolts (3 pcs.) which
fix the compressor to the compressor fixing
plate.
11) Remove the compressor from the compressor fixing plate.
NOTE)
Compressor
∗ Mount the soundproof plate by
passing between the compressor
and pipes and between pipes and
the partition plate in order of
upper, inner, outer and rear sides.
Soundproof plate
(Upper)
A compressor weighs approx. 15kg.
Treat a compressor by two or more personals.
∗ Caution to assemble compressor
• Tighten the compressor bolt with 5N•m
(50kgf•cm).
• Be sure not to burn lead wire of the coil.
• Take care there is no missing of sensor.
Soundproof plate Soundproof plate
(Rear)
(Outer)
Soundproof plate
(Inner)
- 94 -
FILE NO. SVM-15074
No.
Part name
10
Fan guard
Procedure
Remarks
1. Detachment
1) Perform works of Detachment 1 of 1 and 2 .
CAUTION
Bell mouth
Discharge
port cabinet
Work on the cardboard, cloth, and etc. in order to
prevent damage on the product.
2) Take off the discharge port cabinet and put it as
the fan guard side directs downward.
3) Take off the hooking claws (8 positions) of the
fan guard.
2. Attachment
1) Push the hooking claws (8 positions) with hands
from the front side and then fix the claws.
Fan guard
CAUTION
Check all the hooking claws are fixed at each
specified position.
11
Fin guard
1. Detachment
1) Remove the top plate. (Hexagonal screw Ø4 × 10, 6 pcs.)
2) Take off fixing screws for the fin guard and the anchor board.
(Hexagonal screw Ø4 × 10, 3 pcs.)
3) Mount a new fin guard.
Fin guard
Fixing screws
- 95 -
Hooking claw
FILE NO. SVM-15074
No.
Part name
12
4-way valve
coil
Procedure
Remarks
∗ Attachment
Mount 4-way valve coil so that the label side
directs upper side of the cabinet.
Detail A
Detail A
4-way valve unit
Label
4-way valve coil
13
PMV
Coil: Green
Coil: Red
Coil: Yellow
1. Detachment
1) Perform work of Detachment 1 of 1 .
2) Turn the coil clockwise (counterclockwise) and
then remove it from PMV main unit. (All 4 pcs.)
Detail B
2. Attachment
1) Mount the PMV coil so that the coil lead wire
taking-out part directs downward.
CAUTION
Taking-off direction
Turn clockwise
(counterclockwise)
Coil: Mount yellow coil only so that lead wire
taking-out part directs upward.
PMV sideways
2) Match the positioning projection of coil with
the concave part of PMV unit surely and fix it.
Projection of PMV coil
Detail B
Coil: Green
Coil: Red
Concave part of PMV
Coil: Yellow
- 96 -
FILE NO. SVM-15074
No.
14
Procedure
Part name
TE sensor
(Outdoor heat
exchange
temperature)
Remarks
∗ Attachment
Mount TE sensor on the straight part of the
condenser discharge port pipe so that the lead
wire directs upward and the sensor directs the
liquid store tank.
Detail F
Detail C
15
TS sensor
(Suction
temperature)
∗ Attachment
Insert TS sensor into the sensor holder welded
to the suction pipe and then mount it.
Detail C
Detail D
Detail D
Detail E
16
TD sensor
(Discharge
temperature)
∗ Attachment
Mount TD sensor on the straight part of the
discharge pipe so that the lead wire directs
upward and the sensor directs upward of the
cabinet.
Detail E
NOTE
17
TO sensor
(Outside
temperature)
∗ Attachment
Insert TO sensor holder claw into the heat
exchange terminal block hole and then mount it.
Detail F
Heat exchange
terminal block hole
TO sensor
holder
At working time (finish time), be
sure not to damage the cover of
the sensor lead wire with edge of
sheet metal, etc.
If the cover of the sensor lead wire
is damaged, it is dangerous
because an electric shock or fire
may be caused.
NOTE
After replacing of parts, check the
sensors are mounted at the
specified positions.
If there are incorrect mounted
positions, control of the product
does not operate correctly and a
trouble may be caused.
- 97 -
FILE NO. SVM-15074
No.
18
Part name
TG sensor
TGc: Green
TGb: Red
TGa: Yellow
Procedure
Remarks
∗ Attachment
Mount these sensors on the directly arranged
part of the header connecting pipe at gas side
so that the cabinet turns toward the front side
and the sensors turn toward upper cabinet.
NOTE)
When mounting the sensors, check paint color
of the sensor lead tube part and the pipe color.
Mount the sensors to the position of same color.
Detail G
TGc: Green
TGb: Red
Detail G
TGa: Yellow
NOTE)
19
Sensor wiring
process
• Using bundling band, bind PMV coil
(Green to Yellow) with Tga to Tgc.
• For Td sensor, bind the case thermo and
reactor lead by bundling band.
Bundling band
PMV coil (Green to Yellow)
TGa to TGc sensors
At working time (finish time), be
sure not to damage the cover of
the sensor lead wire with edge of
sheet metal, etc.
If the cover of the sensor lead
wire is damaged, it is dangerous
because an electric shock or fire
may be caused.
NOTE)
After replacing of parts, check
the sensors are mounted at the
specified positions.
If there are incorrect mounted
positions, control of the product
does not operate correctly and a
trouble may be caused.
Bundling band
Td sensor
Case thermo
Reactor lead
Pass TG sensor through the
upper side of connecting pipe of
PMV unit (Green) and then bind
it with lead wire of PMV coil.
NOTE)
Using the bundling band being on the market,
be sure to bind the position which was bound.
- 98 -
FILE NO. SVM-15074
No.
19
Remarks
Part name
Procedure
Sensor wiring
process
(Continued)
∗ Bind TS sensor, TE sensor and TO sensor with
the bundling band.
∗ Pass TE sensor and TO sensor through upper
part of the inverter fixing board and then bind
them with the bundling band.
Inverter fixing board
NOTE)
Using the bundling band being on the market,
be sure to bind the position which was bound.
Bundling band
TS sensor
TE sensor
TO sensor
20
Pressure
switch
1. Detachment
1) Perform work of Detachment 1 of 1.
2) Recover the refrigerant gas from the outdoor unit.
3) Peform works of 2, 3 and 4.
4) Remove the soundproof plate, TD sensor,
Reactor on the partition plate and butyl on the pipe
of pressure switch.
5) Using a burner, remove the welded parts of
the pipe of pressure switch.
NOTE)
Take care that the electric parts, 4-way valve unit,
butyle, compressor, accum tank, and etc. are not
caught by flame.
(Otherwise operaion trouble may occur.)
2. Attachment
• Be sure not to burn lead wire of the pressure switch.
• Take care there is no missing of sensor.
NOTE)
Take care that the body of the pressure is not
be 100°C or more.
For cooling pressure switch, use the wet towel
and etc.
Use the protective plate for the welding.
- 99 -
Bundling band
TE sensor
TO sensor
FILE NO. SVM-15074
∗ RAS-4M27S3AV-A only
No.
Part name
21
Demand P.C.
board
Remarks
Procedure
CUATION
Never forget to put on the gloves at working time;
otherwise an injury will be caused by the parts etc.
NOTE)
When working, be sure to use the insulate tools and
put on the insulated gloves.
WARNING
Never disassemble the inverter until 5 minutes after
the power supply was turned off because there is a
fear that an electric shock may occur.
1. Detachment
1) Stop operation of the air conditioner, and turn off the
switch of the breaker.
2) Remove the front panel.
(Hexagonal screw Ø4 × 10, 5 pcs.)
• After taking off screws, the front panel is pulled
downward c.
The front panel is pulled forward and removed d.
3) Remove the power supply cable and the indoor/
outdoor/DRED connecting wire from the cord clamp
and the terminal.
4) Remove the fixing screws of Demand P.C. board
assembly, and draw out the Demand P.C. board.
(Truss head B tight Ø4 × 6, 2pcs.)
5) Remove the earth screws.
(Truss head B tight Ø4 × 6, 1pc.)
6) Remove the power supply wiring and relay
connector connected to the Demand P.C. board.
CN100 : UART (2P, White)
CN101 : UART (2P, Yellow)
CN102 : UART (2P, White)
CN105 : UART (2P, White)
COM terminal: Red lead wire
DRM1 terminal: White lead wire
DRM2 terminal: Black lead wire
DRM3 terminal: Blue lead wire
* Unlock the lock of the housing unit and then
remove the connectors.
7) Remove the Demand P.C. board from the fixture.
8) Exchange the Demand P.C. board with a new one.
NOTE)
Using the bundling band being on the market, be
sure to bind the position which was bound.
Front panel
1 Downward
2 Forward
Transformer for
Demand P.C. board
Demand P.C. board
assembly
Fixing screws for Demand
P.C. board assembly
UART
(CN105)
COM, DRM1-DRM3
terminal
UART
(CN102)
UART
(CN100)
- 100 -
UART
(CN101)
FILE NO. SVM-15074
13. EXPLODED VIEWS AND PARTS LIST
13-1. Outdoor Unit
Location
No.
Part
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
43T00661
43T00659
43T00564
43T00551
43T19346
43T19345
43T19343
43T22313
43T42347
43T41477
43T46380
43T46427
43T46443
43T46442
43T46441
43AN0278
43AN0106
43049788
43T47399
43T47398
43T47397
43T46439
Description
Location
No.
Part
No.
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
43T46440
43T63335
43T54319
43T50307
43T49346
43T39342
43T47001
43T20329
43T21429
43T58307
43T48310
43T46383
43T63344
43T43514
43T79305
43T63316
43T63317
43T63323
43T19333
43T96305
43T85591
ASM-CABI-BACK
ASM-PANEL-FRONT
UPPER CABINET ASSEMBLY
AIR OUTLET CABINET
FIN GUARD ASSEMBLY
FIN GUARD
FAN GUARD(TOSHIBA)
BELLMOUTH
BASE PLATE ASSEMBLY
COMPRESSOR
VALVE;PACKED 9.52 DIA
VALVE;PACKED 12.7 DIA
SOCKET, 6.35 DIA
SOCKET, 9.52 DIA
SOCKET, 12.7 DIA
FLARE-NUT-SERVICE
FLARE-NUT
NUT-FLARE
BONNET, 6.35 DIA
BONNET, 9.52 DIA
BONNET, 12.7 DIA
BODY-PMV
- 101 -
Description
COIL-PMV
HOLDER-SENSOR
BIMETAL-THERMO
BIMETAL THERMOSTAT ASSEMBLY
RUBBER CUSHION
MOTOR BASE
NUT FLANGE
PROPELLER FAN
FAN MOTOR
REACTOR
ACCUMULATOR ASSEMBLY
VALVE-4WAY
COIL-V-4WAY
CONDENSER ASSEMBLY
DRAIN NIPPLE
HOLDER,SENSOR
HOLDER,SENSOR
HOLDER,SENSOR
HOLDER, SENSOR
BUSHING
MARK-T
FILE NO. SVM-15074
13-2. Inverter Assembly
Location
No.
Part
No.
700
701
702
703
704
705
706
707
43T60427
43T60452
43T50347
43T50356
43T60433
43T60422
43T58307
43T60426
Description
Location
No.
Part
No.
Description
708
709
710
711
712
713
716
717
43T61315
43T61316
43T6V587
43T61324
43T6V586
43T6V585
43T6V475
43T58322
SPACER(BUSH)
SPACER(COLLAR)
ASM-PCB(FAN-REL)
ASM-SPACER-SET
PC-BOARD
PC-BOARD
PC BOARD(DRC)(for RAS-3M26S3AV-A)
TRANSFORMER(for RAS-3M26S3AV-A)
TERMINAL BLOCK,3P,20A
SERV-TERMINAL
SENSOR ASSY, SERVICE
SERVICE-SENSOR
SENSOR ASSY,SERVICE
REACTOR
REACTOR
FUSE
- 102 -
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