HOW TO DIAGNOSE THE TROUBLE ...................................................... 74
HOW TO REPLACE THE MAIN PARTS..................................................108
EXPLODED VIEWS AND PARTS LIST ................................................. 127
Page 3
1. SAFETY PRECAUTIONS
FILE NO. SVM-19040
- 3 -
Read the precautions in this manual
carefully before operating the unit.
Information included in the Operation
Manual and/or Installation Manual.
This appliance is fi lled with R32.
(Flammable Material)
Service personnel should be handing this equipment
with reference to the Installation Manual.
For general public use
Power supply cord and connecting cable of appliance use shall be at least polychloroprene sheathed
flexible cord (design H07RN-F) or cord designation 60245 IEC66. (Shall be installed in accordance with
national wiring regulations.)
• 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.
■
Important information regarding the refrigerant used
This product contains fl uorinated greenhouse gases covered by the Kyoto Protocol. Do not vent gases into
the atmosphere. Refrigerant type: R32
(1)
GWP
value: 675*
(1)
GWP = global warming potential
The refrigerant quantity is in dicated on the unit name plate.
* This value is based on F gas regulation 517/2014
CAUTION
CAUTION
TO DISCONNECT THE APPLIANCE FROM THE MAIN POWER SUPPLY
This appliance must be connected to the main power supply by means of a circuit breaker or a switch
with a contact separation of at least 3 mm in all poles.
Page 4
DANGER
FILE NO. SVM-19040
- 4 -
• 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 INCOR-
RECTLY 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
REGISTORS, FURNACE, STOVES, ETC.
• WHEN MOVING THE AIR-CONDITIONER FOR INSTALLATION IN ANOTHER PLACE, BE VERY CARE-
FUL NOT TO ALLOW THE SPECIFIED REFRIGERANT (R32) 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
• 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.
Page 5
Do not pierce or burn as the appliance is pressurized. Do not expose the appliance to heat, fl ame, sparks, or
FILE NO. SVM-19040
- 5 -
•
other sources or ignition. Else, it may explode and cause injury or death.
For R32 model, use pipes, fl are nut and tools which is specifi ed for R32 refrigerant. Using of existing (R22)
•
piping, fl are nut and tools may cause abnormally high pressure in the refrigerant cycle (piping), and possibly
result in explosion and injury.
Thickness of copper pipes used R32 must be more than 0.8mm. Never use copper pipes thinner than 0.8mm.
•
After completion of installation or service, confirm there is no leakage of refrigerant gas. It may generate toxic
•
gas when the refrigerant contacts with fire.
• Comply with national gas regulations.
CAUTION
• E
xposure of unit to water or other moisture before installation may res
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 ins
the noise level of the unit or where noise or dischar
• T
o avoid personal injury
• P
erform the specified installation work to guard against an earthquake.
If the air conditioner is not installed appropriately, ac
, be careful when handling parts with sharp edges.
ged air might disturb neighbors.
cidents may occur due to the falling unit.
ult in an electrical short.
tall in a place that can amplify
For Reference:
If a heating operation would be continuously performed for a long time under the condition that the outdoor
temperature is 0°C or lower, drainage of defrosted water may be difficult due to freezing of the bottom
plate, resulting in a trouble of the cabinet or fan.
It is recommended to procure an antifreeze heater locally for a safe installation of the air conditioner.
For details, contact the dealer.
Net weight(kg)10
Fan motor output(W)35
Air flow rate(Cooling / Heating)
Outdoor unitUnit model
DimensionHeight(mm)550
Width(mm)780
Depth(mm)290
Net weight(kg)30
CompressorMotor output(W)750
Type
ModelKSN108D22UFZ
Fan motor output(W)43
Air flow rate(Cooling / Heating)
PipingTypeFlare connection
connectionIndoor unitLiquid side(mm)
Gas side(mm)
Outdoor unitLiquid side(mm)
Gas side(mm)
Maximum length(m)20
Maximum charge-less length(m)15
Maximum height difference(m)12
RefrigerantName of refrigerant
Weight(kg)0.62
WiringPower supply3 Wires: Includes earth (Outdoor)
connectionInterconnection4 Wires: Includes earth
Usable temperature rangeIndoor(Cooling / Heating)21-32/ -28
Outdoor(Cooling / Heating)-15,46/-15,24
AccessoryIndoor unit
Installation plate1
Wireless remote controller1
Batteries
Remote controller holder1
Active Carbon Catechin filter
Mounting screw
Remote controller holder
Flat head wood screw
Installation manual1
Owner's manual
(m3 / min)
(m3 / min)
(oC)
(oC)
RAS-16TKVG-EE
RAS-16TAVG-EE
4.20
1.20-4.70
5.00
1.30-6.00
11Ph/220-240V/50Hz
6.356.41
RAS-16TKVG-E
13/13
RAS-16TAVG-E
Single rotary type with DC-inverter variable speed control
36/36
6.35
12.7
6.35
12.7
R32
2
-
6(4x25L)
2(3.1x16L)
1
RAS-18TKVG-EE
RAS-18TAVG-EE
CoolingHeating
0.34-0.320.34-0.32
5050
6666
CoolingHeating
6.91-6.337.16-6.58
15001550
9998
7.25-6.657.50-6.90
RAS-18TKVG-E
5.00
1.30-5.50
5.40
1.00-6.00
3.23/3.38
47/48
40/40
32/32
50/52
293
798
230
9
30
13/14
RAS-18TAVG-E
550
780290
34
750
KSN108D22UFZ
43
36/36
Flare connection
6.35
12.7
6.35
12.7
20
15
12
R
32
0.88
21-32/ -28
-15,46/-15,24
1
1
2
1
-
6(4x25L)
2(3.1x16L)
1
1
* The specification may be subject to change without notice for purpose of improvement.
Page 9
2-2. Operation Characteristic Curve
FILE NO. SVM-19040
- 9 -
<Cooling><Heating>
10
RAS-18TKVG-EE
9
RAS-16TKVG-EE
8
RAS-05TKVG-EE
10
RAS-16TKVG-EE
9
8
RAS-18TKVG-EE
7
6
RAS-13TKVG-EE
5
RAS-10TKVG-EE
Current (A)
4
3
2
1
RAS-07TKVG-EE
Conditions
Indoor : DB 27oC/WB 19
Outdoor : DB 35oC/WB 24
Indoor Air Flow : High
Pipe Length : 5m
Pipe Length : 7.5m (18k Only)
Voltage : 230V
0
010 20 30 40 50 60 70 80 90 100 110
o
C
o
C
7
6
5
Current (A)
4
3
2
1
0
010 20 30 40 50 60 70 80 90 100 110
Compressor Speed (RPS)
2-3. Capacity Variation ratio According to Temperature.
<Cooling><Heating>
105
120
RAS-05TKVG-EE
Conditions
Indoor : DB 20oC/WB 15
Outdoor : DB 7oC/WB 6
Indoor Air Flow : High
Pipe Length : 5m
Pipe Length : 7.5m (18k Only)
Voltage : 230V
Compressor Speed (RPS)
RAS-13TKVG-EE
RAS-07TKVG-EE
RAS-10TKVG-EE
o
C
o
C
100
95
90
85
80
75
Cooling Capacity ratio (%)
70
65
Capacity ratio : 100 %=
1.50kW(RAS-05TKVG-EE)
2.00kW(RAS-07TKVG-EE)
60
2.50kW(RAS-10TKVG-EE)
3.30kW(RAS-13TKVG-EE)
55
4.20kW(RAS-16TKVG-EE)
5.00kW(RAS-18TKVG-EE)
50
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46
Conditions
Indoor : DB 27oC/WB 19
Outdoor : DB 35oC/WB 24
Indoor Air Flow : High
Pipe Length : 5m
Pipe Length : 7.5m (18K only)
Voltage : 230V
Outside Temperature ( oC)
100
80
60
Heating Capacity ratio (%)
40
Capacity ratio : 100 %=
o
C
o
C
2.00kW(RAS-05TKVG-EE)
2.50kW(RAS-07TKVG-EE)
20
3.20kW(RAS-10TKVG-EE)
3.60kW(RAS-13TKVG-E
5.00kW(RAS-16TKVG-EE)
5.40kW(RAS-18TKVG-EE)
Conditions
Indoor : DB 20oC/WB 15
Outdoor : DB 7oC/WB 6
Indoor Air Flow : High
E)
Pipe Length : 5m
Pipe Length : 7.5m (18K only)
Voltage : 230V
o
C
o
C
0
-25-20510
-15-10-50
Outside Temperature ( ºC)
Page 10
3. REFRIGERANT R32
FILE NO. SVM-19040
- 10 -
This air conditioner adopts the new refrigerant HFC
(R32) which does not damage the ozone layer.
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.
3-1. Safety During Installation/Servicing
The basic installation servicing work procedures are
the same as conventional R410A models.
As R32’s pressure is about 1.6 times higher than that
of R22, improper installation/servicing may cause a
serious trouble. By using tools and materi-als exclusive
for R32, it is necessary to carry out installation/
servicing safely while taking the following precautions
into consideration.
1. Never use refrigerant other than R32 in an air
conditioner which is designed to operate with R32.
If other refrigerant than R32 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.
The refrigerant name R32 is indicated on the visible
place of the outdoor unit of the air conditioner using
R32 as refrigerant. To prevent mischarging, the
diameter of the service port differs from that of R22.
R32 and other HFCs are heavier than air, and
therefore they are inclined to settle near the floor
surface.
If the gas fills up the room or the bottom part of a
room, it may also cause oxygen deficiency and may
reach its combustion concentration.
In order to prevent oxygen deficiency and R32
combustion, keep the room well-ventilated for a
healthy work environment.
In particular, using HFCs in a basement room or
confined area creates a higher risk; be sure to
furnish the room with local exhaust ventilation.
If a refrigerant leak is confirmed in a room an
inadequately ventilated location, do not use a flame
until the area has been ventilated appropriately and
the work environment has been improved.
The same applies in case of brazing, ensure
appropriate ventilation to prevent oxygen deficiency
and R32 combustion.
Check that there are no dangerous or combustible
items nearby, and ensure a fire extinguisher is close
at hand.
Keep a sufficient distance away from causes of fire
(ignition sources) suc
and electric heaters in places where installation,
repairs, or similar work on air-conditioning
equipment is performed.
h as gas-burning equipment
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 moisture dust or oil 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 fan-driven heater, space
heater, etc., a poisonous gas may occur
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's may result in water leakage,
electric shock and fire, etc.
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 R32 incurs pres-sure
higher than when using R22, it is necessary to
choose adequate materials.
Thicknesses of copper pipes used with R32 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.
Page 11
Table 3-2-1 Thicknesses of annealed copper pipes
FILE NO. SVM-19040
- 11 -
Thickness (mm)
Nominal diameter
1/4
3/8
1/2
5/8
Outer diameter (mm)
6.35
9.52
12.70
15.88
R32(R410A)R22
0.800.80
0.800.80
0.800.80
1.001.00
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
1/4
3/8
1/2
5/8
Reference outer diameter of
copper pipe jointed (mm)
6.35
9.52
12.70
15.88
Minimum joint thickness
(mm)
0.50
0.60
0.70
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
Page 12
d) Flare Processing
FILE NO. SVM-19040
- 12 -
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 R32 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.
Table 3-2-3 Dimensions related to flare processing for R32(R410A)
Nominal
diameter
Outer
diameter
(mm)
Thickness
(mm)
Fig. 3-2-1 Flare processing dimensions
Flare tool for R32
clutch type
ØD
A
A (mm)
Conventional flare tool
Clutch type Wing nut type
1/4
3/8
1/2
5/8
Nominal
diameter
1/4
3/8
1/2
5/8
6.35
9.52
12.70
15.88
Table 3-2-4 Dimensions related to flare processing for R22
Outer
diameter
(mm)
6.35
9.52
12.70
15.88
0.8
0.8
0.8
1.0
Thickness
(mm)
0.8
0.8
0.8
1.0
0 to 0.5
0 to 0.5
0 to 0.5
0 to 0.5
Flare tool for R22
clutch type
0 to 0.5
0 to 0.5
0 to 0.5
0 to 0.5
1.0 to 1.51.5 to 2.0
1.0 to 1.51.5 to 2.0
1.0 to 1.52.0 to 2.5
1.0 to 1.52.0 to 2.5
A (mm)
Conventional flare tool
Clutch type Wing nut type
0.5 to 1.01.0 to 1.5
0.5 to 1.01.0 to 1.5
0.5 to 1.01.5 to 2.0
0.5 to 1.01.5 to 2.0
Nominal
diameter
1/4
3/8
1/2
5/8
Table 3-2-5 Flare and flare nut dimensions for R32(R410A)
Outer diameter
(mm)
6.35
9.52
12.70
15.88
Thickness
(mm)
0.8
0.8
0.8
1.0
Dimension (mm)
ABCD
9.19.26.513
13.213.59.720
16.616.012.923
19.719.016.025
Flare nut width
(mm)
17
22
26
29
Page 13
Table 3-2-6 Flare and flare nut dimensions for R22
FILE NO. SVM-19040
- 13 -
Nominal
diameter
1/4
3/8
1/2
5/8
3/4
Outer diameter
(mm)
6.35
9.52
12.70
15.88
19.05
45° to 46°
Thickness
(mm)
0.8
0.8
0.8
1.0
1.0
BA
Dimension (mm)
ABCD
9.09.26.513
13.013.59.720
16.216.012.920
19.719.016.023
23.324.019.234
D
C
43° to 45°
Flare nut width
(mm)
17
22
24
27
36
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 R32 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 R32(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
3/8
1/2
5/8
6.35
9.52
12.70
15.88
14 to 18 (140 to 180)
33 to 42 (330 to 420)
50 to 62 (500 to 620)
63 to 77 (630 to 770)
16 (160), 18 (180)
42 (420)
55 (550)
65 (650)
Page 14
3-3. Tools
FILE NO. SVM-19040
- 14 -
3-3-1. Required Tools
The service port diameter of packed valve of the outdoor unit in the air-water heat pump using R32 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 R32 (Those which cannot be used for conventional refrigerant (R22))
2. Tools exclusive for R32, but can be also used for conventional refrigerant (R22)
3. Tools commonly used for R32 and for conventional refrigerant (R22)The table below shows the tools exclusive for R32 and their interchangeability.
Tools exclusive for R32 (The following tools for R410A are required.)
Tools whose specifications are changed for R32 and their interchangeability
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
R32(R410A)
Whether conventional equipment
can be used
*(Note 1)
*(Note 1)
×
×
×
×
×
air-water heat pump installation
No.
1
2
3
4
5
6
7
8
(Note 1) When flaring is carried out for R32(R410A) using the conventional flare tools, adjustment of projection
Used tool
Flare tool
Copper pipe gauge for
adjusting projection
margin
Torque wrench
(For Ø12.7)
Gauge manifold
Charge hose
Vacuum pump adapter
Electronic balance for
refrigerant charging
Leakage detector
margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.
Pipe flaring
Flaring by
conventional flare tool
Connection of flare nut
Evacuating, refrigerant
charge, run check, etc.
Vacuum evacuating
Refrigerant charge
Gas leakage check
Usage
Existence of
new equipment
for R32
Conventional air-water
heat pump installation
Whether new equipment
can be used with
conventional refrigerant
¡
*(Note 1)
×
×
¡
¡
¡
In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary
as the general tools.
1. Vacuum pump
Use vacuum pump by attaching
vacuum pump adapter.
2. Torque wrench (For Ø6.35, Ø9.52)
3. Pipe cutter
Also prepare the following equipments for other installation method and run check.
1. Clamp meter
2. Thermometer
General tools (Conventional tools can be used.)
4. Reamer
5. Pipe bender
10. Hexagon wrench
6. Level vial
7. Screwdriver (+, –)
8. Spanner or Monkey wrench
11. Tape measure
12. Metal saw
3. Insulation resistance tester
4. Electroscope
9. Hole core drill (Ø65)
(Opposite side 4mm)
Page 15
3-4. Recharging of Refrigerant
FILE NO. SVM-19040
- 15 -
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.
Connect the charge hose to packed valve service
port at the outdoor unit’s gas side.
Connect the charge hose to the vacuum pump
adapter.
Open fully both packed valves at liquid and gas
sides.
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.
Keep the status as it is for 1 to 2 minutes, and ensure
that the compound gauge’s pointer does not return.
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.
Place the handle of the gauge manifold Low in the
fully opened position, and turn on the vacuum pump’s
power switch. Then, evacuating the refrigerant in the
cycle.
(For refrigerant charging, see the figure below.)
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)
Opened
(Outdoor unit)
Refrigerant cylinder
(with siphon)
Check valve
Opened
Open/close
valve for charging
Electronic balance for refrigerant charging
Fig. 3-4-1 Configuration of refrigerant charging
Opened
Closed
Service port
Page 16
1. Be sure to make setting so that liquid can be charged.
FILE NO. SVM-19040
- 16 -
2. When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.
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
OUTDOOR unit
Refrigerant
cylinder
Gauge manifold
OUTDOOR unit
cylinder
Refrigerant
Electronic
balance
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.
Electronic
balance
Siphon
Fig. 3-4-2
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
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. 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.
Page 17
2. Characteristics required for flux
FILE NO. SVM-19040
- 17 -
• 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.
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
3-5-3. Brazing
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.
Piping material
Copper - Copper
Copper - Iron
Iron - Iron
Used brazing filler
Phosphor copper
Silver
Silver
Used flux
Do not use
Paste flux
Vapor flux
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).
This air conditioner is a capacity-variable type air
conditioner. Its system can control the speed of
compressor motor according to load. The drive circuit
for the indoor motor is mounted in the indoor unit.
The drive circuits for outdoor motor and compressor
are mounted in 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. Moreover, it also
determines required speed of compressor motor and
then transfers the operation command to the outdoor
unit controller.
The outdoor unit controller erceives operation
command from the indoor unit and controls revolution
speed of the compressor motor.
The outdoor unit controller controls speed of
compressor motor be controlling output voltage of the
inverter and switching timing of supply power (current
transfer timing), so that compressor motor operates
according to the operation command. And then, the
outdoor unit controller transfers the operating status
back to the indoor unit controller.
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) from
the outdoor unit and judgment/display of error
2. Role of outdoor unit controller
Receiving the operation command signal (Serial
signal) from the indoor unit controller, the outdoor
unit performs compressor operation control as
followed to judgment of serial signal from indoor
side.
• 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 [Com-
pressor 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.
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.
3-1. How to Set the A uto Restart Function ....................................................................... 53
9-
3-2. How to Cancel the Au to Restar t Function ................................................................. 54
9-
3-3. Power Failure During Timer Operation .................................................................... 54
9-4. Remote Controller and Its Fuctions
9-
4-1. Parts Name of Remote Contr oller .............................................................................. 55
9-
4-2. Operation of remote control ...................................................................................... 55
9-
4-3. Name and Functions of Indications on Remote Contr oller ........................................ 57
Page 35
Item
FILE NO. SVM-19040
- 35 -
Operation flow and applicable data, etc.
Description
1. Basic
operation
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 left, and also controls the compressor, outdoor fan motor, 4-way valve and pulse Modulating valve.
Selection of
operation conditions
ON/OFF
Remote controller
Control contents of remote controller
• ON/OFF
• Operation select (AUTO/COOL/DRY/HEAT/FAN ONLY)
• Temperature setup
• Air direction
• Swing
• Air volume select (AUTO/LOW/LOW+/MED/MED+/HIGH)
• ECO
• SILENT
• OFF timer setup
• Hi-POWER
Signal receiving
Indoor unit control
Operation command
Serial signal send/receive
Serial signal send/receive
Outdoor unit control
Indoor unit
Indoor unit control
• Command signal generating function of
indoor unit operation
Calculation function (temper
•
• Activation compensation function of indoor fan
• Cold draft preventive function
• Timer function
• Indoor heat exchanger release control
ature calculation)
Outdoor unit
Outdoor unit control
• Frequency control of inverter output
Waveform composite function
•
• Calculation function
(Temperature calculation)
• AD conversion function
k heating function
Quic
•
• Delay function of compressor reactivation
• Current release function
• GTr over-current preventive function
Defrost operation function
•
Inverter
• Indoor fan motor
• Louver motor
~
•
Compressor
• Outdoor fan motor
• 4-way valve
Pulse Modulating valve
•
(P.M.V.)
Page 36
Item
FILE NO. SVM-19040
- 36 -
Operation flow and applicable data, etc.
Description
1. Basic
operation
2. 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 form 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 fanmotor control” and the louver according to the contents of “9. Louver control”, respectively.
3) The outdoor unit controls the outdoor fan motor, compressor, pulse Modulating valve and
4-way valve according to the operation signal sent from the indoor unit.
Operation ON
Indoor unit control
Sending of operation command signal
Outdoor unit control
3. AUTO operation
Selection of operation mode
As shown in the following figure, the operation starts by
selecting automatically the status of room temperature
(Ta) when starting AUTO operation.
*1. When reselecting the operation mode, the fan
speed is controlled by the previous operation mode.
Ta
Cooling operation
Ts + 1
Monitoring (Fan)
Ts – 1
Heating operation
Setup of remote controller
Indoor fan motor control / Louver control / Operation Hz
Control (Requierment)
Compressor revolution control / Outdoor fan motor control /
Operation Hz control (Include limit control)
4-way valve control In cooling operation:
In heating operation:
Pulse Modulating valve control
[ ]
1) Detects the room temperature (Ta) when
the operation started.
2) Selects an operation mode from Ta in
the left figure.
3) Fan operation continues until an
operation mode is selected.
4) When AUTO operation has started
within 2 hours after heating operation
stopped and if the room temperature is
20°C or more, the fan operation is
performed with ”Super Ultra LOW” mode
for 3 minutes.
Then, select an operation mode.
5) If the status of compressor-OFF
continues for 15 minutes the room
temperature after selecting an operation
mode (COOL/HEAT), reselect an
operation mode.
OFF
ON
4. DRY operation
DRY operation is performed according to the difference
between room temperature and the setup temperature as
shown below.
In DRY operation, fan speed is controlled in order to
prevent lowering of the room temperature and to avoid air
flow from blowing directly to persons.
[°C]
+
+
Ta
1.0
0.5
L– (W5)
(W5+W3) / 2
SUL (W3)
Tsc
Fan speed
1) Detects the room temperature (Ta) when
the DRY operation started.
2) Starts operation under conditions in the
left figure according to the temperature
difference between the room temperature and the setup temperature (Tsc).
Setup temperature (Tsc)
= Set temperature on remote controller
(Ts) + (0.0 to 1.0)
3) When the room temperature is lower
1°C or less than the setup temperature,
turn off the compressor.
Page 37
Item
FILE NO. SVM-19040
- 37 -
Operation flow and applicable data, etc.
Description
2. Indoor fan
motor control
COOL ON
Fan speed setup
AUTO
Ta
[°C]
+2.5
a
+2.0
b
+1.5
c
+1.0
<In cooling operation>
(This operation controls the fan speed at indoor unit side.)
The indoor fan (cross flow fan) is operated by the phase-
control induction motor. The fan rotates in 5 stages in
MANUAL mode, and in 5 stages in AUTO mode, respectively. (Table 1)
MANUAL
(Fig. 1)
Indication
L
L+
M
M+
H
Fan speed
W7
(L + M) / 2
WA
(M + H) / 2
WD
(Fig. 2)
Air volume AUTO
M+(WC)
*3
*4
*5
*3 : Fan speed = (M + –L) x 3/4 + L
*4 : Fan speed = (M + –L) x 2/4 + L
*5 : Fan speed = (M + –L) x 1/4 + L
* Symbols
UH: Ultra High
H: High
M+: Medium+
M: Medium
L+: Low+
L: Low
L-: Low–
UL: Ultra Low
SUL: Super Ultra Low
* The fan speed broadly varies due
to position of the louver, etc.
The described value indicates one
under condition of inclining
downward blowing.
1) When setting the fan speed to L,
L+, M, M+ or H on the remote
controller, the operation is
performed with the constant
speed shown in Fig. 1.
2) When setting the fan speed to
AUTO on the remote controller,
revolution of the fan motor is
controlled to the fan speed level
shown in Fig. 2 and Table 1
according to the setup temperature, room temperature, and heat
exchanger temperature.
1) When setting the fan speed to L,
L+, M, M+ or H on the remote
controller, the operation is performed with the constant speed
shown in Fig. 3 and Table 1.
2) When setting the fan speed to
AUTO on the remote controller,
revolution of the fan motor is
controlled to the fan speed level
shown in Fig. 5 according to the set
temperature and room temperature.
3) Min air flow rate is controlled by
temperature of the indoor heat
exchanger (Tc) as shown in Fig. 4.
4) Cold draft prevention, the fan
speed is controlled by temperature
of the indoor heat exchanger (Tc)
as shown in Fig. 6.
5) In order to prevent Cold draft when
compressor step during heating
operation. Then louver will move to
upper position and fan speed will
reduce or off.
*Fan speed=
TC
Fan spee
AUT
L+ (W9)
*1
*2
*3
M+ (WD)
H (WE
Basic fan contr
A
TS
–0.
d
–1.0
e
–1.5
–2.0
–2.5
–5.0
f
g
(Fig. 4)
*1: Fan speed = (M + -L+) x 1 4 + L+
*2: Fan speed = (M + -L+) x 2 4 + L+
*3: Fan speed = (M + -L+) x 3 4 + L+
(Calculated with linear approximation from M+ and L+)
(Fig. 5)
No limi
W8) + W
Cold draft preventive control
T
4646
454533
333321
323220
*A+4*A+4*A+4
*A-4*A-4*A-4
* No limitation while fan speed MANUAL mode is in stabilit
* A: When Tsc 24, A is 24, and when Tsc < 24, A is Ts
Tsc: Set valu
34
Fan speed MAN
Fan speed AUTO in stabilit
Fan speed AUTO in startin
H (WE
Line-approximate
H and S
SUL (W2
AL in startin
L with Tc
Stop
(Fig. 6)
[In starting and in stability]
FAN AUTO
FAN Manual
In starting
• Until 12 minutes passed after operation start
• When 12 to 25 minutes passed after operation
start and room temp. is 3°C or lower than set temp.
• Room temp. < Set temp. –4°C
In stability
• When 12 to 25 minutes passed after operation start
and room temp. is higher than (set temp. –3°C)
• When 25 minutes or more passed after operation start
• Room temp. ≥ Set temp. –3.5°C
Page 40
Item
FILE NO. SVM-19040
- 40 -
Operation flow and applicable data, etc.
Description
3. Outdoor fan
motor control
1) Outdoor unit
when the motor stopped.
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.
Air conditioner ON
(Remote controller)
Indoor unit controller
operation
command
(Outdoor fan control)
2) Fan speed ≥ 400
YES
OFF status of
fan motor continues.
NO
Fan motor ON
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.
The cooling or heating capacity depending on the load is
adjusted.
According to difference between the setup value of temperature and the room temperature, the capacity is adjusted by
the compressor revolution.
Set temp. (Ts)
Ts –Ta
Correction of Hz signal
Detection of electromotive force
of compressor motor winding
Detection of motor speed and rotor position
Correction value of Hz signal ≤ Operating Hz
verter output change
In
Commutation timing change
Room temp. (Ta)
1) The difference between set
temperature on remote controller
(Ts) and room temperature (Ta)
is calculated.
2) According to the temperature
difference, the correction value of
Hz signal which determines the
compressor speed is set up.
3) The rotating position and speed
of the motor are detected by the
electromotive force occurred on
the motor winding with operation
of the compressor.
4) According to the difference
resulted from comparison of the
correction value of Hz signal with
the present operation Hz, the
inverter output and the commutation timing are varied.
5) Change the compressor motor
speed by outputting power to the
compressor.
* The contents of control
operation are same in cooling
operation and heating
operation
5. Current release
control
Outdoor unit inverter main
circuit control current
Operating current ≤
Setup value
Low
Capacity control continues.
Mode
Outdoor temperature: To (°C)
To 45
Cooling
Heating
45 > To 40
To < 40
To 16
16 > To 11
To < 11
Change of compressor speed
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.
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.
Page 42
Item
FILE NO. SVM-19040
- 42 -
Operation flow and applicable data, etc.
Description
6. Release protective
control by temperature of indoor heat
exchanger
7°C
6°C
5°C
Indoor heat exchanger temperature
<In cooling/dry operation>
(Prevent-freezing control for indoor heat exchanger)
In cooling/dry operation, the sensor of indoor heat
exchanger detects evaporation temperature and
controls the compressor speed so that temperature of
the heat exchanger does not exceed the specified
value.
Usual cooling capacity control
R
When the value is
in Q zone, the
Q
compressor speed
is kept.
P
Reduction of compressor speed
1) When temperature of the indoor
heat exchanger drops below 5°C,
the compressor speed is
reduced. (P zone)
2) When temperature of the indoor
heat exchanger rises in the
range from 6°C to under 7°C, the
compressor speed is kept.
(Q zone)
3) When temperature of the indoor
heat exchanger rises to 7°C or
higher, the capacity control
operation returns to the usual
control in cooling operation.
(R zone)
55°C
52°C
48°C
Indoor heat exchanger temperature
<In heating operation>
(Prevent-overpressure control for refrigerating cycle)
In heating operation, the sensor of indoor heat ex-
changer detects condensation temperature and controls
the compressor speed so that temperature of the heat
exchanger does not exceed the specified value.
Reduction of compressor speed
P
When the value is
Q
in Q zone, the
compressor speed
is kept.
R
Usual heating capacity control
1) When temperature of the indoor
heat exchanger rises in the
range from 52°C to 55°C, the
compressor speed is kept.
(Q zone)
When temperature of the indoor
heat exchanger drops in the
range from 48°C to under 55°C,
the compressor speed is kept.
(Q zone)
2) When temperature of the indoor
heat exchanger rises to 55°C or
higher, the compressor speed is
reduced. (P zone)
3) When temperature of the indoor
heat exchanger does not rise to
52°C, or when it drops below to
48°C, the capacity control
operation returns to the usual
control in heating operation.
(R zone)
Page 43
Item
FILE NO. SVM-19040
- 43 -
Operation flow and applicable data, etc.
Description
7. 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.
started are stored in memory as TE0 and TO0, respectively.
Table 1
Defrost zone
A zone
B zone
C zone
D zone
Table 2
Heating operation
(time)
a373743515555
b
c
d
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, or C zone each. (Table 1)
cb ad
Azone
Bzone
*
In normal TOIn abnormal TO ***
TO> -10 °C & (TE0-TE)-(TO0-TO)≥3°C & SH-SH0≤2
TO> -10 °C & (TE0-TE)-(TO0-TO)≥2°C & SH-SH0≤2
To> -10 °C & TE≤ -25°C & SH-SH0≤2
TO > -10 °C & Accumulate heating operation time > e minute & TE < 0 °C
When pressing
[SWING] button during
operation, the louver
starts swinging.
o
5
o
30
o
Lower Limit
Position
Page 45
Item
FILE NO. SVM-19040
- 45 -
Operation flow and applicable data, etc.
Description
9. ECO
operation
+6.5
+6.0
+5.5
+5.0
+4.5
+4.0
+3.5
+3.0
+2.5
+2.0
+1.5
+1.0
+0.5
TSC
-0.5
-1.0
-2.0
When pressing [ECO] button on the remote controller, a
Economic operation is performed.
<Cooling operation>
This function operates the air conditioner with the difference
between the set and the room temperature as shown in the
following figure.
Frequency
Zone
12
Dry Max
11
*12
*11
10
*10
9
*
8
7
*8
6
5
4
3
2
Min
1
Hz
OFF
1H2H
3H
4H
Time
<Cooling operation>
1) The control target temperature
increase 0.5ºC per hour up to 2ºC
starting from the set temperature
when ECONO has been received.
2) The indoor fan speed is depend
on presetting and can change
every speed after setting ECO
FAN
operation.
3) The compressor speed is
controlled as shown in the left
figure.
Fan speed depend on presetting and can change every speed.
Hz
05TKVG-EE
Cool min
DRY max
<Heating operation>
0
–0.5
A
–1.0
–1.5
B
–2.0
–2.5
–3.0
–4.0
–5.0
–6.0
–7.0
–8.0
(Room temp. – Set temp.)
–9.0
C
–10.0
–11.0
* 12 (DRY max - COOL min) /6 x 5 + COOL min
* 11 (DRY max - COOL min) /6 x 4 + COOL min
* 10 (DRY max - COOL min) /6 x 3 + COOL min
* 9 (DRY max - COOL min) /6 x 2 + COOL min
* 8 (DRY max - COOL min) /6 x 1 + COOL min
20
35
07TKVG-EE
20
3535
30 minutes
10TKVG-EE
20
→ Time Compressor
A
B
C
13TKVG-EE 16TKVG-EE
20
3535
20
<Heating operation>
speed
1) Setting the compressor speed to
0Hz
A zone
aHz
2) The indoor fan speed is depend
B zone
a to cHz
C zone
cHz
18TKVG-EE
16
35
Max. aHz, the temperature zone
in which the operation can be
performed with Max. cHz is
gradually widened after 30
minutes passed when starting
ECO operation.
on presetting and can change
every speed after setting ECO
operation.
Hz
a
c
05TKVG-EE
20
3131
07TKVG-EE
20
10TKVG-EE
20
40
13TKVG-EE 16TKVG-EE
20
5545
20
18TKVG-EE
16
45
Page 46
Item
FILE NO. SVM-19040
- 46 -
Operation flow and applicable data, etc.
Description
10. Temporary
operation
Pressing [RESET] button starts the temporary operation of [AUTO] operation. When keeping [RESET]
button pressed for 10 seconds or more, the temporary
[COOL] operation is performed.
1) When pressing [RESET] button, the
temporary [AUTO] operation starts.
2) When keeping [RESET] button pressed
for 3 seconds or more, Pi, Pi, Pi sound is
heard and [AUTO RESTART] control is
changed.
Press RESET button.
3) When keeping [RESET] button pressed
for 10 seconds or more, “Pi” sound is
heard and the temporary [COOL]
Did you press [RESET] button
for 3 seconds or more?
YES
Did you press [RESET] button
for 10 seconds or more?
NO
Switch to [AUTO RESTART] control.
NO
Temporary [AUTO] operation
YES
Temporary [COOL] Operation
operation starts.
4) To stop the temporary operation, press
the button again.
11. Discharge temperature control1. Purpose
Td value
117°C
115°C
106°C
103°C
96°C
Control operation
Judges as an error and stops the compressor.
Reduce the compressor speed.
Reduce slowly compressor speed.
Keeps the compressor speed.
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.
This function detects error on the
refrigerating cycle or error on the compressor, and performs protective control.
2. Operation
• Control of the compressor speed
The speed control is performed as
described in the left table based upon
the discharge temperature.
12. High pressure control
Cooling
Heating
(TE)
(TC)
63°C
62°C
63°C
57°C
61°C
55°C
59°C
53°C
49°C
55°C
Control operation
1. Purpose
This function detects error on the
refrigerating cycle or error on the compressor, and performs protective control.
2. Operation
Control of the compressor speed The
speed control is performed as described in
the left table based upon the heat
exchanger temperature (TE, TC).
Page 47
Item
FILE NO. SVM-19040
- 47 -
Operation flow and applicable data, etc.
Description
13. Pulse
Modulating
valve (P.M.V.)
control
SH 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 Modulation.
Starting up
Initialize
Move to
initial position
Compressor ON
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 valve is adjusted according to each setup conditions during
preparation for defrost and during defrost
operation (4-way valve is inversed.).
5) To turn off the compressor while the air
conditioner stops by control of the
thermostat or by remote controller, adjust
the open degree of valve to the setup
value before stop of the compressor.
PMV open degree control
Stop by
remote controller
Room temp. sensor
(Ta sensor) control
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 Modulating Valve
Defrost
Page 48
Item
FILE NO. SVM-19040
- 48 -
Operation flow and applicable data, etc.
Description
14. Self-Cleaning
function
Unit now performing cooling or dry operation
Press “STOP” button
Only timer indicator lights, and Self Cleaning operation starts
Time set now elapses
Operation stops
1. Purpose
The Self-Cleaning operation is to minimize the
growth of mold, bacteria etc. by running
the fan and drying so as to keep the
inside of the air conditioner clean.
Self-Cleaning operation
When the cooling or dry operation shuts
down, the unit automatically starts the SelfCleaning operation which is then performed
for the specified period based on duration
of the operation which was performed
prior to the shutdown, after which the
Self-Cleaning operation stops.
(The Self-Cleaning operation is not
performed after a heating operation.)
2. Operation
1) When the stop signal from the remote
controller or timer-off function is received,
only the timer indicator light.
2) The period of the Self-Cleaning operation
is determined by the duration of the
operation performed prior to the
reception of the stop code.
3) After the Self-Cleaning operation has
been performed for the specified period,
the unit stops operating.
• During Self-Cleaning operations: The louver opens
slightly. The indoor fan operates continuously at
a speed of 500 rpm.
Self-Cleaning operation times
Self-Cleaning operation time
No Self-Cleaning operation
performed (0 minutes)
30 mins.
Cooling: Auto (cooling) Dry
Heating: Auto (heating)
Auto (fan only)
Shutdown
Operation time
Up to 10 minutes
10 minutes
or longer
No Self-Cleaning operation performed
• To stop an ongoing Self-Cleaning operation at any time
Press the start/stop button on the remote controller twice during the Self-Cleaning
operation. (After pressing the button for the first time, press it for the
second time without delay (within 10 minutes).)
Page 49
Item
FILE NO. SVM-19040
- 49 -
Operation flow and applicable data, etc.
Description
14. Self-Cleaning
function
14-1-1. Self-Cleaning diagram
Operation displayONOFFOFF
FCU fan
FCU louverOPENOPEN (12.7º)CLOSE
Timer display
Compressor
CDU fanON or OFF
rpm is depend on presetting.(500RPM)
depend on presetting of timer function.depend on presetting of timer function.
depend on presetting per room temperature.
depend on presetting per room temperature.
Cool mode or dry mode
operation more than 10 mins.
ONON
ON or OFF
ON or OFF
Self-Cleaning mode
Turn off by remote controller or
timer-off function.
ON
OFFOFF
OFFOFF
operate 30 mins.
Automatically turn-off.
OFF
ON or OFF
14-1-2. Self-Cleaning function release
•
How to set/cancel Self-Cleaning function
To set/cancel the Self-Cleaning function, proceed as
follows:
•
Setting diagnosis code "06" on remote controlle
(See detail of setting diagnosis code in 11-4-1)
•
Turn on the power supply to air
conditioner, after
Set or Cancel Self-Cleaning function by push
the RESET button on air conditioner.
When setting is changed, the sound warning will
alarm "Beep". The setting is changed following
below.
ON
OFF
that press [RESET] button on air conditioner 1
time to turn on the air conditioner (The LED
display will show in operation LED)
•
Take the remote controller to direction of LED
1
display on air conditioner, press button "up" (see
• Turn on air conditioner again by remote controller
to confirm setting.
OFF
detail of setting diagnosis code in 11-4-1) 1 time
to send the code "07"
*(within 3 sec. after press [RESET] button),* then
air conditioner will shutdown automatically. Also,
LED display will show flash follow the able below.
Operation time
ON
Self-cleaning
function
ON
OFF
Note) Table above will show current status of
Self-Cleaning function
Operation LED
flash 1 Hz
flash 1 Hz
Timer LED
not flash
Flash 1 Hz
OPERATION /
RESET Button
1
Page 50
Item
FILE NO. SVM-19040
- 50 -
Operation flow and applicable data, etc.
Description
15. Remote-A or B
selection
Setting the remote controller
To separate using of remote control for each indoor
unit in case of 2 air conditioner are installed nearly.
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 unit.
3) Push and hold [CHECK] button on the Remote
Control by the tip of the pencil. "00" will be shown
shown on the display (Picture ).
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 ).
Note : 1. Repeat above step to reset Remote Control
to be A.
2. Remote Control A has not "A" display.
3. Default setting of Remote Control from
factory is A.
1
2
1. Purpose
This operation is to operate only one
indoor unit using one remote controller.
2. Description
When operating one indoor unit in a
situation where two indoor units have
been installed in the same room or
nearby rooms, this operation prevents
the remote controller signal from being
received simultaneously by both units,
thus preventing both units from
operating.
3. Operation
The indoor unit on which the remote
controller selection has been set to B
receives the signal of the remote controller also set to B.
(At the factory the remote controller
selection is set to A on all the indoor
units. There is no A setting display.)
6. Hi-POWER
1
Mode
([Hi-POWER] button on the remote controller
is pressed)
When [Hi-POWER] button is pressed while the indoor
unit is in Auto, Cooling or Heating operation, HiPOWER mark is indicated on the display of the remote
controller and the unit operates as follows.
1. Automatic operation
• The indoor unit operates in according to the
current operation.
2. Cooling operation
• The preset temperature drops 1ºC
(The value of the preset temperature on the
remote controller does not change.)
The indoor unit's fan speed level increase 1 tap
3. Heating operation
• The preset temperature increases 2ºC
(The value of the preset temperature on the
remote controller does not change.)
The indoor unit's fan speed level increase 1 tap
4. The Hi-POWER mode can not be set in Dry
operation
Page 51
Item
FILE NO. SVM-19040
- 51 -
Operation flow and applicable data, etc.
Description
17. Display lamp
brightness
adjustment
To decrease the display lamp brightness or turn it off.
1. Press and hold for 3 seconds until brightness level (, ,
or ) is shown on remote control LCD then release the button.
2.. Press
Remote control
LCD
• In the examples of
Rise
or
Decrease
Operation displayBrightness
Lamp illuminates full brightness.
Lamp illuminates 50% brightness.
Lamp illuminates 50% brightness and the
operation lamp is turned off.
All lamps are turned off.
to adjust brightness in 4 levels.
and , the lamp illuminates for 5 seconds before going off.
100%
50%
50%
All turned off
Operation
18.
mode
select table
Operating system setting
1.
Purpose
Choosing the operating system as
appropriate in real condition
2.
Operation
Factory default setting prefer
"Heat pump" system. Through it is
able to cooling only system heating
only system or return to factory
default.
•
Do cut J804 for cooling only system
•
Do cut J805 for heating only system
•
Do cut both of J804 and J805 for return
to factory default.
Page 52
Item
FILE NO. SVM-19040
- 52 -
Operation flow and applicable data, etc.
Description
19. QUIET mode
20. Silent
Operation
The "Quiet mode" selected from [ FAN ] button;
- The fan of the indoor unit will be restricted the
revolving speed at speed UL.
- The compressor speed is controlled as shown
in the figure.
Model
Cool/Heat min 20.420.4
Quiet Cool (Hz)20.421.6
Quiet Heat (Hz)23.430.6
Model
Cool/Heat min 20.420.4
Quiet Cool (Hz)
Quiet Heat (Hz)
05K07K
13K16K
34.240.8
32.445.0
10K
20.4
31.2
39.6
18K
16.2
26.4
37.2
The "Quiet mode" is canceled by [ FAN ] button is
pressed to select other speed.
Silent button on remote controller is pressed.
Silent :
Cooling/heating capacity is limited maximum
for 70% of rated. Only compressor speed is
limited.
Quiet mode is the system which, control the
revolving speed of indoor fan to work
constantly at lower than speed L. In addition,
noise level of indoor unit is less than usual.
Remarks :
1. Quiet mode is unable to work in dry mode.
2. Quiet mode is appropriate to work with less
cooling load and less heating load condition.
Because of the fan speed may not enough
the cooling capacity or heating capacity.
This function is used when the user need
to keep silent at outdoor side. It is limit
maximum compressor speed. Sound
level can be implemented by silent level.
Sound level:
Rated level > Silent
Note:
Due to Silent operation reason,
In adequate cooling/heating capacity
may occur.
Silent maximum Operation Hz
Model
CoolingHeating
RAS-05TKVG-EE
RAS-07TKVG-EE
RAS-10TKVG-EE
RAS-13TKVG-EE
RAS-16TKVG-EE
RAS-18TKVG-EE
ECO AND SILENT OPERATION
Press
: Start and stop the operation.
NORMALECOSILENT
25.836.0
37.848.0
46.257.0
55.257.0
44.465.4
36.058.2
Page 53
9-3. Auto Restart Function
FILE NO. SVM-19040
- 53 -
This indoor unit is equipped with an automatic restarting function which allows the unit to restart operating with
the set operating conditions in the event of a power supply being accidentally shut down.
The operation will resume without warning three minutes after power is restored.
This function is not set to work when shipped from the factory. Therefore it is necessary to set it to work.
9-3-1. How to Set the Auto Restart Function
To set the auto restart function, proceed as follows:
The power supply to the unit must be on ; the function will not set if the power is off.
Press the [RESET] button located in the center of the front panel continuously for three seconds.
The unit receives the signal and beeps three times.
The unit then restarts operating automatically in the event of power supply being accidentally shut down.
• When the unit is standby (Not operating)
Operation
Press [RESET] button for more than
three seconds. (Less than 10 seconds)
OPERATION /
RESET Button
• When the unit is in operation
Operation
Press [RESET] button for more than
three seconds. (Less than 10 seconds)
Motions
The unit is on standby.
↓
The unit starts to operate.The white indicator is on.
↓After approx. three seconds,
The unit beeps three times
and continues to operate.
The white indicator flashes
for 5 seconds.
If the unit is not required to operate at this time, press [RESET]
button once more or use the remote controller to turn it off.
Motions
The unit is in operation.The white indicator is on.
↓
The unit stops operating.The white indicator is turned off.
• While the filter check indicator is on, the RESET button has the function of filter reset betton.
OPERATION /
RESET Button
↓After approx. three seconds,
The unit beeps three times.The white indicator flashes
for 5 seconds.
If the unit is required to operate at this time, press [RESET] button
once more or use the remote controller to turn it on.
Page 54
9-3-2. How to Cancel the Auto Restart Function
FILE NO. SVM-19040
- 54 -
To cancel auto restart function, proceed as follows :
Repeat the setting procedure : the unit receives the signal and beeps three times.
The unit will be required to be turned on with the remote controller after the main power supply is turned off.
• When the system is on stand-by (not operating)
Operation
Press [RESET] button for more than
three seconds. (Less than 10 seconds)
OPERATION /
RESET Button
• When the system is operating
Operation
Press [RESET] button for more than
three seconds. (Less than 10 seconds)
Motions
The unit is on standby.
↓
The unit starts to operate.The white indicator is on.
↓After approx. three seconds,
The unit beeps three times and continues to operate.
If the unit is not required to operate at this time, press [RESET]
button once more or use the remote controller to turn it off.
Motions
The unit is in operation.The white indicator is on.
↓
The unit stops operating.The white indicator is turned off.
The unit beeps three times.
If the unit is required to operate at this time, press [RESET] button
once more or use the remote controller to turn it on.
OPERATION /
RESET Button
9-3-3. Power Failure During Timer Operation
When the unit is turned off because of power failure
during timer operation, the timer operation is cancelled. In that case, set the timer operation again.
NOTE :
The Daily Timer is reset while a command signal
can be received from the remote controller even if it
stopped due to a power failure.
↓After approx. three seconds,
Page 55
9-4. Remote Controller and Its Fuctions
FILE NO. SVM-19040
- 55 -
9-4-1. Parts Name of Remoe Controller
1
Infrared signal emitter
2
Start/Stop button ( )
3
Mode select button (MODE)
4
Temperature button (TEMP)
5
Fan speed button (FAN)
6
Swing louver button (SWING)
7
Set louver button (FIX)
8
Off timer button (OFF)
9
High power button (Hi-POWER)
10
18
ECO/SILENT button (ECO/SILENT)
11
19
Clear button (CLEAR)
12
Check button (CHECK)
9-4-2. Operation of remote control
1. AUTOMATIC OPERATION
To automatically select cooling, heating or fan only operation.
MODE
1. Press
: Select A.
3
2
7
9
8
#
MODE
1
Hi POWER
ECO
SILENT
OFF
4
6
5
!
"
2. Press
3. Press
: Set the desired temperature. Min. 17°C, Max. 30°C.
FAN
: Select AUTO, LOW , LOW+ , MED , MED+
, HIGH
, or QUIET .
2. COOLING / HEATING / FAN ONLY OPERATION
1. Press : Select Cool , Heat , or Fan only .
MODE
2. Press : Set the desired temperature.
Cooling / Heating : Min 17°C - Max 30°C
Fan Only: No temperature indication
FAN
: Select AUTO, LOW , LOW+ , MED , MED+
, HIGH 3. Press
, or QUIET .
3. DRY OPERATION (COOLING ONLY)
For dehumidification, a moderate cooling performance is controlled automatically.
1. Press
2. Press
MODE
: Select Dry .
: Set the desired temperature. Min. 17°C, Max. 30°C
Note: Dry Mode fan speed is set to Auto only.
4. Hi-POWER OPERATION
To automatically control room temperature and airflow for faster cooling or heating operation
(except in DRY and FAN ONLY mode).
Press : Start and stop the operation.
Note: Hi-POWER operation symbol will appear on remote control display.
Page 56
5. ECO / SILENT OPERATION
FILE NO. SVM-19040
- 56 -
ECO OPERATION
To automatically control room temperature to save energy (Except in DRY and FAN ONLY mode)
Note: Cooling operation; the set temperature will increase automatically 1 degree/hour for 2 hours
(maximum 2 degree increase). For Heating operation the set temperature will decrease.
SILENT OPERATION
To reduce outdoor sound level during operation (Except in DRY and FAN ONLY mode)
Note: Though operating silently, the Heating or Cooling capacity is still prioritized to ensure
having sufficient comfort inside the room.
ECO and SILENT operation setting
Press
NORMAL
Note: ECO and SILENT operation symbol will appear on remote control display.
6. TIMER OPERATION
To automatically control room to save energy (except in DRY and FAN ONLY mode)
Press for enter OFF timer setting.
1
2
Press for select desired OFF timer. (0.5 - 12 hrs)
Press for set OFF timer.
3
Press again for cancel OFF timer.
4
Note: TIMER OPERATION symbol will appear on remote control display.
: Start and stop the operation.
➝
ECO
➝
Setting the OFF timer
SILENT
7. TEMPORARY OPERATION
In case of the misplaced or discharged remote control
•
Pressing the RESET button, the unit can start or stop without using
the remote control.
•
Operation mode is set on AUTOMATIC operation,
preset temperature is 24°C and fan operation is automatic speed.
8.AUTO RESTART OPERATION
To automatically restart the conditioner after the power failure (Power of the unit must be on.)
Setting
1.
Press and hold the RESET button on the indoor unit for 3 seconds to set the
operation.(3 beep sound and OPERATION lamp blink 5 time/sec. for 5 seconds)
Do not operate ON timer and OFF timer.
2.
Press and hold the RESET button on the indoor unit for 3 seconds to cancel the
operation. (3 beep sound but OPERATION lamp does not blink)
•
In case of timer are set, AUTO RESTART OPERATION does not activate.
Page 57
9. MANUAL DEFORST OPERATION
FILE NO. SVM-19040
- 57 -
To defrosting the heat exchanger of the outdoor unit during Heating operation.
Press and hold
[ ] as picture 1 for 2 sec.
MODE
: for 5 sec. then remote control display will show
Hi POWER
ECO
SILENT
OFF
9-4-3. Name and Functions of Indications on Remote Controller
[Display]
All indications, except for the clock time indicator, are displayed by pressing the
1. Transmission mark
This transmission mark indicates when the
remote controller transmits signals to the indoor unit.
2. Mode indicator
Indicates the current operation mode.
(A : Auto, : Cool, : Dry,
: Heat, : Fan only)
4. FAN speed indicator
Indicates the selected fan speed.
AUTO or five fan speed levels
(
LOW , LOW+ , MED
HIGH , and QUIET ) can be shown.
Indicates AUTO when the operating mode is
: Dry.
3. Temperature indicator
Indicates the temperature setting.
(17°C to 30°C)
1
2
3
6
5. OFF TIMER indicator
Indicates when the OFF timer is setting press the
OFF timer button and select off time by TEMP
botton after that back to press OFF timer again to
timer setting and push CLEAR button to stop the
operation.
6. Hi-POWER indicator
Indicates when the Hi-POWER operation starts.
Press the Hi-POWER button to start and press it
again to stop the operation.
7. ECO indicator
Indicates when the ECO is in
Press the ECO/ button to start and stop
operation.
8. A, B change indicator remote controller
When the remote controller switching function is
set, “B” appears in the remote controller display.
(When the remote controller setting is “A”, there is
no indication at this position.)
MODE
Hi POWER
ECO
SILENT
OFF
button.
, MED+
activated.
,
8
4
9
7
5
Indicates when the SILENT operation start.
Press the ECO/ button to start and stop
operation.
NORMAL
➝
ECO
➝
SILENT
9. SILENT indicator
Page 58
10. INSTALLATION PROCEDURE
FILE NO. SVM-19040
- 58 -
10-1. Installation Diagram of Indoor and Outdoor Units
Hook
300 mm or more
Installation
1
plate
Shield pipe
3
Batteries
(Attach to the front panel.)
6
Flat head
wood screw
Remote control
holder
300 mm or more
Air filter
4
65 mm or more
Hook
Refrigerant piping
must be protected from
physical damage.
Install a plastic cover or
equivalent.
Vinyl tape
Apply after carrying
out a drainage test.
For the rear left, bottom left and left piping
Wall
Cut out a piece of SPACER from indoor
unit packaging box, roll it and insert
between the indoor unit and wall to tilt
the indoor unit for better operation.
The auxiliary piping can be connected to
the left, rear left, rear right, right, bottom
right or bottom left.
Right
Rear
right
Bottom
right
Rear
left
Left
Bottom left
Do not allow the drain hose to get slack.
Cut the piping
hole sloped
slightly.
Make sure to run the drain hose sloped
downward.
Wireless remote control
2
RAS-05, 07, 10, 13TAVG-EE
C600600
D400600
E45100
F100100
RAS-16, 18TAVG-EE
• Loading Batteries
1. Remove the battery cover.
2. Insert 2 new batteries (AAA type)
following the (+) and (-) positions.
E mm or more
C mm or more
F mm or more
D mm or more
Saddle
Extension drain hose
(Not available, provided
by installer)
C mm or more
Before installing the wireless remote controller
Insulate the refrigerant pipes separately
with insulation, not together.
6 mm thick heat resisting
polyethylene foam
AC
L
3 Batteries
2 Wireless remote controller
Page 59
10-2. Installation
FILE NO. SVM-19040
- 59 -
10-2-1. Optional installation parts
Part
code
Refrigerantpiping
Liquidside:Ø6.35mm
A
Gasside:Ø12.70mm
Pipeinsulatingmaterial
B
(polyethylenefoam,6mmthick)
C
Putty,PVCtapes
Parts nameQ’ty
(RAS-05,07,10,13TKVG-EE)
(RAS-16,18TKVG-EE)
<Fixing bolt arrangement of outdoor unit>
500 mm
Air inlet
97 mm
Ø25 mm
53 mm
300 mm
280 mm
Air outlet
Drain outlet
One
each
1
One
each
340 mm
320 mm
108 mm125 mm
28 mm
Ø25 mm
86 mm
Air outlet
600 mm
Air inlet
102 mm
90 mm
Drain outlet
RAS-05, 07, 10, 13TAVG-EE
RAS-16, 18TAVG-EE
Fig. 10-2-1
·
Secure the outdoor unit with fixing bolts and nuts if the unit is likely to be exposed to a strong wind.
Use ∅ 8 mm or ∅ 10 mm anchor bolts and nuts.
·
· If it is necessary to drain the defrost water, attach drain nipple 9 and cap waterproof
10
to
the bottom plate of the outdoor unit before installing it.
In the case of an air conditioner using R32, 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 R32(R410a)
New tools for
R32(R410a)
Gauge manifold
Charge hose
Electronic balance
for refrigerant charging
Torque wrench
(nominal diam. 1/2, 5/8)
Flare tool (clutch type)
Gauge for projection
adjustment
Vacuum pump adapter
Applicable to R22 model
×
×
¡
×
¡
——
¡
Changes
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.
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.
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.
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.
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.
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 R32(R410a). If the vacuum pump oil (mineral) mixes with
R32(R410a) a sludge may occur and damage the equipment.
Gas leakage detector
• Incidentally, the “refrigerant cylinder” comes with the refrigerant designation R32(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.
×
Exclusive for HFC refrigerant.
Page 62
10-3. Indoor Unit
FILE NO. SVM-19040
- 62 -
10-3-2. Cutting a hole and mounting installation
10-3-1. Installation place
• A place which provides the spaces around the
indoor unit as shown in the diagram
• A place where there are no obstacles near the air
inlet and outlet
•
A place which allows easy installation of the piping
to the outdoor unit
A place which allows the front panel to be opened
•
The indoor unit shall be installed at least 2.5 m height.
•
Also, it must avoided to put anything on the top of the
indoor unit.
CAUTION
• Direct sunlight to the indoor unit’s wireless
receiver should be avoided.
• The microprocessor in the indoor unit should not
be too close to RF noise sources.
(For details, see the owner’s manual.)
<Remote control>
• A place where there are no obstacles such as a
curtain that may block the signal from the indoor
unit.
• Do not install the remote control in a place exposed
to direct sunlight or close to a heating source, such
as a stove.
• Keep the remote control at least 1 m apart from the
nearest TV set or stereo equipment. (This is
necessary to prevent image disturbances or noise
interference.)
• The location of the remote control should be
determined as shown below.
(Top view)
Remote
control
Indoor unit
Reception
range
45°
45°
Remote
control
Indoor unit
(Side view)
75°
Reception
range
<Cutting a hole>
When installing the refrigerant pipes from the rear.
Pipe hole
Ø65 mm
The center of the pipe hole
is above the arrow.
120 mm
Fig. 10-3-2
1. After determining the pipe hole position on the
mounting plate (A), drill the pipe hole (∅65 mm) at
a slight downward slant to the outdoor side.
NOTE
• When drilling a wall that contains a metal lath, wire
lath or metal plate, be sure to use a pipe hole brim
ring sold separately.
<Mounting the installation plate>
65
103
300
50
1
Installation
plate
300
Pipe hole
144
50
Indoor unit
Hook
Thread
Hook
Weight
Fig. 10-3-3
Hook
Pipe hole
Mounting screw
5
Fig. 10-3-1
Page 63
<When the installation plate is directly mounted on
FILE NO. SVM-19040
- 63 -
the wall>
1. Securely fit the installation plate onto the wall by
screwing it in the upper and lower parts to hook up
the indoor unit.
2. To mount the installation plate on a concrete wall
with anchor bolts, utilize the anchor bolt holes as
illustrated in the above figure.
3. Install the installation plate horizontally in the wall.
CAUTION
When installing the installation plate with a
mounting screw, do not use the anchor bolt hole.
Otherwise the unit may fall down and result in
personal injury and property damage.
10-3-3. Piping and drain hose installation
<Piping and Drain Hose Forming>
* Since dewing results in a machine trouble, make
sure to insulate both the connecting pipes. (Use
polyethylene foam as insulating material.)
Rear right
Rear left
Bottom left
Changing
Left
Bottom right
Right
Die-cutting
back body slit
drain hose
Piping preparation
Installation plate
<Keep horizontal direction>
Anchor
bolt
Projection
15 mm or less
Fig. 10-3-4
5 mm dia. hole
Mounting
…
screw
s
∅4 x 25
s
sss
Clip anchor
(local parts)
Fig. 10-3-5
CAUTION
Failure to firmly install the unit may result in
personal injury and property damage if the unit falls.
Fig. 10-3-6
1. Die-cutting back body slit
Cut out the slit on the leftward or right side of the back
body for the left or right connection and the slit on the
bottom left or right side of the back body for the bottom
left or right connection with a pair of nippers.
2. Changing drain hose
For leftward connection, bottom-leftward connection
and rear leftward connection’s piping, it is necessary to
change the drain hose and drain cap.
<How to remove the drain hose>
The drain hose can be removed by removing the
•
screw securing the drain hose and then pulling out
the drain hose.
When removing the drain hose, be careful of any
•
sharp edges of steel plate. The edges can injuries.
• To install the drain hose, insert the drain hose firmly
until the connection part contacts with heat insulator,
and the secure it with original screw.
• In case of block, brick, concrete or similar type
walls, make 5 mm dia. holes in the wall.
• Insert clip anchors for appropriate mounting screws
….
NOTE:
• Secure four corners and lower parts of the
installation plate with 4 to 6 mounting screws to
install it.
Drain hose
Fig.10-3-7
<How to remove the Drain Cap>
Clip the drain cap by needle-nose pliers and pull out.
Fig. 10-3-8
Page 64
<How to fix the Drain Cap>
FILE NO. SVM-19040
- 64 -
1) Insert hexagon wrench (4 mm) in a center head.
Fig. 10-3-9
<Left-hand connection with piping>
Bend the connecting pipe so that it is laid within 43 mm
above the wall surface. If the connecting pipe is laid
exceeding 43 mm above the wall surface, the indoor
unit may unstably be set on the wall. When bending the
connecting pipe, make sure to use a spring bender so
as not to crush the pipe.
Bend the connection pipe within a radius of 30 mm.
To connect the pipe after installation of the unit (figure)
2) Firmly insert drain cap.
Do not apply lubricating oil
(refrigerant machine oil)
when inserting the drain
cap. Application causes
deterioration and drain
leakage of the plug.
No gap
Insert a hexagon wrench
(4 mm).
Fig. 10-3-10
CAUTION
Firmly insert the drain hose and drain cap;
otherwise, water may leak.
<In case of right or left piping>
• After scribing slits of the back body with a knife or a
making-off pin, cut them with a pair of nippers or an
equivalent tool.
(To the forefront of flare)
260 mm
210 mm
R 30 mm (Use polisin (polyethylene)
43 mm
core or the like for bending pipe.)
80
Gas side
Liquid side
Outward form of indoor unit
Use the handle of screwdriver, etc.
Fig. 10-3-13
NOTE
If the pipe is bent incorrectly, the indoor unit may
unstably be set on the wall.
After passing the connecting pipe through the pipe
hole, connect the connecting pipe to the auxiliary pipes
and wrap the facing tape around them.
CAUTION
Slit
Fig. 10-3-11
<In case of bottom right or bottom left piping>
After scribing slits of the back body with a knife or
•
a making-off pin, cut them with a pair of nippers or
an equivalent tool.
Slit
2
-1
3
-
10
Fig.
• Bind the auxiliary pipes (two) and connecting
cable with facing tape tightly. In case of leftward
piping and rear-leftward piping, bind the auxiliary
pipes (two) only with facing tape.
Indoor unit
Auxiliary pipes
Installation plate
Connecting cable
• Carefully arrange pipes so that any pipe does not
stick out of the rear plate of the indoor unit.
• Carefully connect the auxiliary pipes and
connecting pipes to each other and cut off the
insulating tape wound on the connecting pipe to
avoid double-taping at the joint, moreover, seal
the joint with the vinyl tape, etc.
• Since dewing results in a machine trouble, make
sure to insulate both the connecting pipes. (Use
polyethylene foam as insulating material.)
• When bending a pipe, carefully do it, not to crush it.
Page 65
10-3-4. Indoor unit fixing
FILE NO. SVM-19040
- 65 -
1. Pass the pipe through the hole in the wall, and hook
the indoor unit on the installation plate at the upper
hooks.
2. Swing the indoor unit to right and left to confirm that
it is firmly hooked up on the installation plate.
3. While pressing the indoor unit onto the wall, hook it
at the lower part on the installation plate. Pull the
indoor unit toward you to confirm that it is firmly
hooked up on the installation plate.
10-3-5. Drainage
1. Run the drain hose sloped downwards.
NOTE
• Hole should be made at a slight downward slant on
the outdoor side.
Do not form the
Do not rise the
drain hose.
drain hose into
a wavy shape.
Press
(unhook)
Fig. 10-3-14
• For detaching the indoor unit from the installation
plate, pull the indoor unit toward you while pushing
its bottom up at the specified parts.
Fig. 10-3-15
50 mm
or more
Do not put
the drain
hose end
into water.
Do not put
the drain
hose end in
the drainage
ditch.
Fig. 10-3-16
2. Put water in the drain pan and make sure that the
water is drained out of doors.
3. When connecting extension drain hose, insulate the
connecting part of extension drain hose with shield
pipe.
Shield pipe
Drain hose
Inside the room
Extension drain hose
Fig. 10-3-17
CAUTION
Arrange the drain pipe for proper drainage from the
unit.
Improper drainage can result in dew-dropping.
This air conditioner has the structure designed to drain
water collected from dew, which forms on the back of
the indoor unit, to the drain pan.
Therefore, do not store the power cord and other parts
at a height above the drain guide.
Wall
Drain
guide
Space for pipes
Fig. 10-3-18
Page 66
10-4. Outdoor Unit
FILE NO. SVM-19040
- 66 -
-1. Installation place
10-4
A place which provides the spaces around the
•
outdoor unit as shown in the diagram
• A place which can bear the weight of the outdoor
unit and does not allow an increase in noise level
and vibration
• A place where the operation noise and discharged
• The allowable height of outdoor unit installation site.
Model
Maximumheight12m12m
RAS-05, 07, 10, 13TAVG-EE
RAS-05, 07, 10, 13TAVG-EE
• A place where the drain water does not raise any
problems
Precautions for adding refrigerant
• Use a scale having a precision with at least 10 g per
index line when adding the refrigerant.
Do not use a bathroom scale or similar instrument.
RAS-16, 18TAVG-EE
RAS-16, 18TAVG-EE
Snow protection plate
Front
Anchor
bolts
Snow protection hood
At least
50 cm
Snow accumulation line
Holding frame
Install at least 50 cm
above the snow
accumulation line.
Fig. 10-4-1
CAUTION
1. Install the outdoor unit without anything blocking
the air discharging.
2. When the outdoor unit is installed in a place
exposed always exposed to strong wind like a
coast or on a high storey of a building, secure
the normal fan operation using a duct or a wind
shield.
3. In particularly windy areas, install the unit such
as to avoid admission of wind.
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 saline-place such as the coast.
• A place full of sulfide gas.
• A place where high-frequency waves are likely
to be generated as from audio equipment,
welders, and medical equipment.
CAUTION
When the outdoor unit is installed in
a place where the drain water might cause any
problems, Seal the water leakage point tightly
using a silicon adhesive or caulking compound.
10-4-2. Precautions about Installation in Regions
with Snowfall and Cold Temperatures
•
� Do not use the supplied drain nipple for draining water.
Drain the water from all the drain holes directly.
•
To protect the outdoor unit from snow accumulation,
�
install a holding frame, and attach a snow protection
hood and plate.
•
�Do not use a double-stacked design.
Strong
wind
Fig.
10-4-
2
Page 67
10-4-3. Draining the Water
FILE NO. SVM-19040
- 67 -
• Holes are provided on the base plate of the
outdoor unit to ensure that the defrost water
produced during heating operations is drained off
efficiently.
If a centralized drain is required when installing the
unit on a balcony or wall, follow the steps below to
drain off the water.
1. Proceed with water-proofing by installing the
water-proof rubber caps in the 2 elongated holes
on the base plate of the outdoor unit. [How to
install the waterproof rubber caps]
1) Place four fingers into each cap, and insert
the caps into the water drain holes by pushing
them into place from the underside of the base
plate.
2) Press down on the outer circumferences of
the caps to ensure that they have been
inserted tightly.
(Water leaks may result if the caps have not
been inserted properly, if their outer
circumferences lift up or the caps catch on or
wedge against something.)
2. Install the drain nipple and a commercially
ailable dr
av
diam
eter),
(For the position where the dr
installed, ref
hose
ain
and dr
ain
16 mm inside
(with
off
the water.
ain nipple is
to the installation diagram
er
indoor and outdoor units.)
• Chec
k that the outdoor unit is horiz
route the dr
angle
Base plate
ain hose at a downw
while ensur
ing that it is connected tautly.
Drain nipple
ontal, and
ard sloped
Commercially available
drain hose
Do not use ordinary garden hose, but one can
flatten and prevent water from draining.
Fig. 10-4-4
of the
Water-proof rubber caps
(supplied with the outdoor unit)
Base plate
Drain nipple
Fig. 10-4-3
Page 68
10-4-4. Refrigerant piping connection
FILE NO. SVM-19040
- 68 -
<Tightening connection>
<Flaring>
Cut the pipe with a pipe cutter.
1.
90°
Obliquity
Roughness
Fig. 10-4-5
2. Insert a flare nut into the pipe, and flare the pipe.
Projection margin in flaring : A (Unit : mm)
•
A
Die
Pipe
Fig. 10-4-6
Ridgid (Clutch type)
Outer dia.
of copper pipe
Ø6.350 to 0.51.0 to 1.5
Ø9.520 to 0.51.0 to 1.5
Ø12.700 to 0.51.0 to 1.5
Pipes thickness
Imper
ial (wing nut type)
Outer dia. of copper pipeR32
Pipes thickness0.8 mm or more
R32 tool used
0.8 mm or more
Ø6.351.5 to 2.0
Ø9.521.5 to 2.0
Ø12.702.0 to 2.5
Conventional tool
used
CAUTION
• Do not scratch the inner surface of the flared part
when removing burrs.
• Flare processing under the condition of scratches
on the inner surface of fl are processing part will
cause refrigerant gas leak.
Warp
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.
Flare nutHalf union
Externally
threaded side
Use a wrench to secure.
Use a torque wrench to tighten.
Internally
threaded side
Fig. 10-4-7
CAUTION
•
Do not apply excess torque.
•
Otherwise, the nut may crack depending on the
conditions.
(Unit : N•m)
Outer dia. of copper pipe
Ø6.35 mm
Ø9.52 mm
Ø12.70 mm
Tightening torque of flare pipe connections
The operating pressure of R32 is higher than that of
R22 (Approx. 1.6 times).
It is theref
ore necessar
y to fir
connecting sections (which connect the indoor and
outdoor units) up to the specified tightening torque.
Incorrect connections ma
leakage
, b
ut also damage to the refr
y cause not only a gas
Tightening torque
1
8 (1.6 to 1.8 kgf•m)
6 to 1
3
2 (3.0 to 4.2 kgf•m)
0 to 4
50 to 62 (5.0 to 6.2 kgf•m)
mly tighten the flare pipe
iger
ant cycle
Flare at
indoor unit side
Flare at
outdoor unit side
.
Fig. 10-4-8
Page 69
AIR PURGE
FILE NO. SVM-19040
- 69 -
acuate the air in the connecting pipes and in theEv
indoor unit using a v
refriger
ant in the outdoor unit. For details, see the
acuum pump. Do not use the
manual of the vacuum pump.
<Using a vacuum pump>
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 oil inside of the vacuum
pump enters into the air conditioner, which use R32,
refrigeration cycle trouble may result.)
1. Connect the charge hose from the manife toold valv
the service port of the gas side packed valve.
2. Connect the charge hose to the port of the vacuum
pump.
3. Open fully the low pressure side handle of the
gauge manifold valve.
4. Operate the vacuum pump to start evacuating.
Perform evacuating for about 15 minutes if the
piping length is 20 meters. (15 minutes for
20 meters) (assuming a pump capacity of 27 liters
per minute. Then confirm that the compound
pressure gauge reading is -101 kP
a (76 cmHg).
5.6.Close the low pressure side valve handle of gauge
manifold.
Open fully the valve stem of the packed valves
(both side of Gas and Liquid).
7. Remove the charging hose from the service port.
8. Securely tighten the caps on the packed valves.
Compound pressure gauge
–101 kPa (-76 cmHg)
Handle Lo
Charge hose (For R32 only)
Connecting pipe
Pressure gauge
Manifold valve
Handle Hi (Keep full closed)
Charge hose (For R32 only)
Vacuum pump adapter for
counter-flow prevention
(For R32 only)
CAUTION
• KEEP IMPORTANT 6 POINTS FOR PIPING WORK
1) Take away dust and moisture (inside of the
connecting pipes).
2) Tighten the connections (between pipes and
unit).
3) Evacuate the air in the connecting pipes using a
VACUUM PUMP.
4) Check gas leak (connected points).
5) Be sure to fully open the packed valves before
operation.
6) Reusable mechanical connectors and flared
joints are not allowed indoors. When
mechanical connectors are reused indoors,
sealing parts shall be renewed. When flared
joints are reused indoors, the fl are part shall be
refabricated.
<Packed valve handling precautions>
• Open the valve stem all the way out, but do not try
to open it beyond the stopper.
Pipe size of Packed Valve
12.70 mm and smallers
15.88 mm
• Securely tighten the valve cap with torque in the
following table
Cap Torque
Valve Rod
Cap
Service
Port Cap
Cap Size (H)
H17 - H19
H22 - H30
H14
H17
Size of Hexagon wrench
A = 4 mm
A = 5 mm
14~18 N.m
(1.4 to 1.8 kgf·m)
33~42 N.m
(3.3 to 4.2 kgf·m)
8~12 N.m
(0.8 to 1.2 kgf·m)
14~18 N.m
(1.4 to 1.8 kgf·m)
Packed valve at liquid side
Vacuum
pump
Packed valve at gas side
Service port (Valve core (Setting pin))
Fig. 10-4-9
Hexagon wrench
is required.
A
H
Service Port Cap
Valve Rod Cap
Fig. 10-4-10
Page 70
10-5. Electrical works
FILE NO. SVM-19040
- 70 -
Model
Powersource50Hz,220–240VSinglephase
Maximumrunningcurrent5.0A5.4A7.2A7.4A9.0A9.25A
Circuitbreakerrating6.5A7.0A9.0A9.5A11.5A12.0A
PowersupplycableH07RN-For60245IEC66(1.5mm
ConnectingcableH07RN-For60245IEC66(1.5mm
10-5-1. Wiring Connection
<
Indoor unit>
Wiring of the connecting cable can be carried out
without removing the front panel.
1. Remove the air inlet grille.
Open the air inlet grille upward and pull it toward you.
2. Remove the terminal cover and cord clamp.
3. Insert the connecting cable (according to the local cords)
into the pipe hole on the wall.
4. Take out the connecting cable through the cable slot on
the rear panel so that it protrudes about 20 cm from the
front.
5. Insert the connecting cable fully into the terminal block
and secure it tightly with screws.
1. The power supply must be same as the rated of air conditioner.
2. Prepare the power source for exclusive use with air conditioner.
3. Circuit breaker must be used for the power supply line of this air conditioner.
4. Be sure to comply power supply and connecting cable for size and wiring method.
5. Every wire must be connected f rmly.
6. Perform wiring works so as to allow a general wiring capacity.
7. Wrong wiring connection may cause some electrical part burn out.
8. Incorrect or incomplete wiring is carried out, it will cause an ignition or smoke.
9. This product can be connected to main power supply.
Connection to fixed wiring : A switch which disconnects all poles and has a contact separation at least 3mm must be
incorporated in the fixed wiring.
CAUTION
Page 73
10-6. Others
FILE NO. SVM-19040
- 73 -
10-6-1 . Gas leak test
Check places for
indoor unit (Flarenut
connection)
Check places
for outdoor unit
Fig. 10-6-1
• Check the flare nut connections for the gas leak with
a gas leak detector or soap water.
NOTE : 1. Repeat previous step to reset Remote
Control to be A.
2. Remote Control A has not "A" display.
3. Default setting of Remote Control from
factory is A.
12
Fig. 10-6-2
10-6-3. Test operation
To switch the TEST RUN (COOL) mode, press
[RESET] button for 10 sec.
(The beeper will make a short beep.)
10-6
-2. Remote Control A-B Selection
• 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.
<Remote control A-B selection>
To separate using of remote control for each indoor unit
in case of 2 air conditioners are installed nearly.
<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 unit.
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
OPERATION /
RESET Button
Fig. 10-6-3
10-6-4. Auto restart setting
This product is designed so that, after a power failure,
it can restart automatically in the same operating mode
as before the power failure.
Information
The product was shipped with Auto Restart function
in the off position. Turn it on as required.
<How to set the auto restart>
1. Press and hold the [RESET] button on the indoor unit
3 seconds to set the operation. (3 beep sound and
OPERATION lamp blink 5 time/sec for 5 seconds)
2. Press and hold the [RESET] button on the indoor
unit for 3 seconds to cancel the operation. (3 beep
sound but OPERATION lamp does not blink)
In case of ON timer or OFF timer are set, AUTO
•
RESTART OPERATION dose not activate.
Page 74
11.HOW TO DIAGNOSE THE TROUBLE
FILE NO. SVM-19040
- 74 -
The pulse motor 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.
1
2
3
4
5
Troubleshooting Procedure
First Confirmation
Primary Judgment
Judgment by Flashing LED of Indoor Unit
Self-Diagnosis by Remote Controller
Judgment of Trouble by Every Symptom
No.
6
7
8
9
10
Troubleshooting Procedure
How to Check Simply the Main Parts
Troubleshooting
How to Diagnose Trouble in Outdoor Unit
How to Check Simply the Main Parts
How to Simply Judge Whether Outdoor
Fan Motor is Good or Bad
K Precautions when handling the new inverter
CAUTION: 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.
The new inverter will be incorporated starting with this unit.
K The control circuitry has an uninsulated construction.
RAS-05,07,10,13TAVG-EE
Fig. 11-1
Page 75
RAS-16,18TAVG-EE
FILE NO. SVM-19040
- 75 -
Fig. 11-2
CAUTION
A high voltage (equivalent to the supply voltage) is also energized to ground through the
sensors, PMV and other low-voltage circuits. The sensor leads and other wires are covered
with insulated tubes for protection. Nevertheless, care must be taken to ensure that these
wires are not pinched.
Take sufficient care to avoid directly touching any of the circuit parts without first turning off
the power.
At times such as when the circuit board is to be replaced, place the circuit board assembly in
a vertical position.
Laying the board flat on an electrically conductive object (such as the top panel of the air conditioner's
outdoor unit) while a charge is still retained by the electrolytic capacitors of the inverter's main circuit may
cause short-circuiting between the electrolytic capacitors and secondary circuit components and result in
damage to the components.
Fig. 11-3
(RAS-05,07,10,13TAVG-EE)
Fig. 11-4
(RAS-16,18TAVG-EE)
Do NOT lay the circuit board assembly flat.
Page 76
K Precautions when inspecting the control section of the outdoor unit
FILE NO. SVM-19040
- 76 -
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 DC280 to 380V) remains and discharging takes a lot of time.
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 soldering iron, etc.
< Discharging method >
1. Remove the inverter cover (plating) by opening four mounting claws.
2. As shown below, connect the discharge resistance (approx. 100Ω40W) or plug of the soldering iron to
voltage betw
capacitor
Inverter module cover
een + – terminals of the C07 (“WARNING ELECTRIC SHOCK” is indicated.) electrolytic
(760µF/400V) on P.C. board, and then perform discharging.
Plug of
Discharging position
(Discharging period
10 seconds or more)
PCB
soldering iron
Spacer
Fig. 11-5 (RAS-05,07,10,13TAVG-EE)
Fig. 11-6 (RAS-16,18TAVG-EE)
Inverter cover
P. C. board
(Soldered surface)
Page 77
11-1. First Confirmation
FILE NO. SVM-19040
- 77 -
11-1-1. Confirmation of Power Supply
Confirm that the power breaker operates (ON) normally.
11-1-2. Confirmation of Power Voltage
Confirm that power voltage is AC 220–230–240 ± 10%.
If power voltage is not in this range, the unit may not operate normally.
11-1-3. Operation Which is not a Trouble (Program Operation)
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 main-
taining of air conditioner.
Table 11-1-1
No.
1
2
3
4
5
Operation of air conditioner
When power breaker is turned “ON”, the
operation indicator (White) of the indoor
unit flashes.
Compressor may not operate even if the
room temperature is within range of
compressor-ON.
In Dry and ECO mode, FAN (air flow)
display does not change even though FAN
(air flow select) button is operated.
Increasing of compressor motor speed
stops approx. 30 seconds after operation
started, and then compressor motor speed
increases again approx. 30 seconds after.
In AUTO mode, the operation mode is
changed.
Description
The OPERATION lamp of the indoor unit flashes when
power source is turned on. If [ ] button is operated
once, flashing stops.
(Flashes also in power failure)
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.
The air flow indication is fixed to [AUTO].
For smooth operation of the compressor, the compressor motor speed is restricted to Max. 41 rps for 2 minutes, and Max.91 rps for 2 minutes to 3 minutes, respectively after the operation has started.
After selecting Cool or Heat mode, select an operation
mode again if the compressor keeps stop status for 15
minutes.
6
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 hightemp. release control (Release protective operation by
temp.-up of the indoor heat exchanger) or current
release control.
Page 78
11-2. Primary Judgment
FILE NO. SVM-19040
- 78 -
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.
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
A
B
C
D
E
Check
code
Block displayDescription for self-diagnosis
OPERATION
Flashing display (1 Hz)
OPERATION
Flashing display (5 Hz)
OPERATION
TIMER (White)
Flashing display (5 Hz)
OPERATION
Flashing display (5 Hz)
OPERATION
TIMER
Flashing display (5 Hz)
Power failure (when power is ON)
Protective circuit operation for indoor P.C. board
Protective circuit operation for connecting cable
and serial signal system
Protective circuit operation for outdoor P.C. board
Protective circuit operation for others
(including compressor)
NOTES :
1. The contents of items B and C and a part of item E are displayed when air conditioner operates.
2. 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.
3. The check codes can be confirmed on the remote controller for servicing.
OPERATION
F
Normal
Flash 1 Hz
Flash 2 Hz
2 times
every 1 sec.
None
TIMER
Normal
None
None
Flash
Release status display
Nothing
Current release
TD release
1 Hz
TC release
Page 79
11-4. Self-Diagnosis by Remote Controller (Check Code)
FILE NO. SVM-19040
- 79 -
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
Press [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
Press [TEMP ] or [TEMP ] 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 :
Alphanumeric characters are
used for the check codes.
is 5. is 6.
is A. is B.
is C. is D.
• • •
• The TIMER indicator of the indoor unit flashes continuously.
(5 times per 1 sec.)
• Check the unit with all 52 check codes ( to )
as shown in Table-11-4-1.
• Press [TEMP ] or [TEMP ] button to change the check
code backward.
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
Press [CLEAR] button. After service finish for clear
service code in memory.
• "7F" is indicated on the display of the remote
control.
4
Press [ ] button to release the service mode.
• The display of the remote controller returns to as it
was before service mode was engaged.
Fig. 11-4-1
Page 80
11-4-2 Caution at Servicing
FILE NO. SVM-19040
- 80 -
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 11-4-1
Block distinctionOperation of diagnosis function
Check
code
Block
Indoor P.C.TA sensor ; The roomOperationFlashes when1. Check the sensor TA and connection.
board.temperature sensor iscontinues.error is detected. 2. In case of the sensor and its
Check
code
Cause of operation
short-Circuit or disconnection.connection is normal, check the
TC sensor ; The heatOperationFlashes when1. Check the sensor TC and connection.
exchanger temperaturecontinues.error is detected. 2. In case of the sensor and its
sensor of the indoor unitconnection is normal, check the
is out of place, disconnection,P.C. board.
short-circuit or migration.
Air
conditioner
status
Display flashing
error
Action and Judgment
P.C. board.
Fan motor of the indoor unitAll OFFFlashes when1. Check the fan motor and connection.
is failure, lock-rotor, short-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. boardP.C. board.
has problem.
Other trouble on the indoorDepend onDepend on
P.C. board.cause ofcause of
failure.failure.
1. Reset power supply.
2. Replace P.C. board.
Page 81
Block distinctionOperation of diagnosis function
FILE NO. SVM-19040
- 81 -
Check
code
Block
Serial signal1) Defective wiring of theIndoor unitFlashes when1) to 3) The outdoor unit never
and connectingconnecting cable oroperateserror is detected.operate.
cable.miss-wiring.continue.Flashing stopCheck connecting cable and correct
Check
code
Cause of operation
2) Operation signal has notOutdoor unit and outdoor unitif defective wiring.
send from the indoor unitstop.start to operateCheck 25A fuse of inverter P.C. board.
when operation start.when the returnCheck 3.15A fuse of inverter
3) Outdoor unit has notsignal from theP.C. board.
send return signal to theoutdoor unit isCheck operation signal of the indoor
indoor unit when operationnormal.unit by using diode. Measure voltage
started.at terminal block of the indoor unit
4) Return signal from thebetween No.2 and No.3 (or L2 and S)
outdoor unit is stop duringIf signal is varied 15-60V continuously,
operation.replace inverter P.C. board.
Some protectorIf signal is not varied, replace indoor
(hardware, if exist) of theP.C. board.
outdoor unit open4) The outdoor unit abnormal stop at
circuit of signal.some time.
Signal circuit of indoorIf the other check codes are found
P.C. board or outdoorconcurrently, check them together.
P.C. board is failureCheck protector (hardware) such
in some period.as Hi-Pressure switch,
Note : Operation signal of the indoor unit shall be measured in the sending period as
picture below.
Sending signal of the indoor unit when have not return
VDC
signal from the outdoor unit.
60
3 minutes Delay, start
counting from power
supply ON or remote
OFF.
*
3 minutes stop
Voltage variation stop
or have not voltage
output.
**
conditioner
***
Air
status
Display flashing
error
Thermal-Relay, etc.
Check refrigerant amount or any
possibility case which may caused
high temperature or high pressure.
Check operation signal of the indoor
unit by using diode. Measure voltage
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.
Action and Judgment
15
Measured signal voltage by apply diode
0
* 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.
3478
Time (Min)
Page 82
Block distinctionOperation of diagnosis function
FILE NO. SVM-19040
- 82 -
Check
code
Block
Outdoor P.C.Current on inverter circuitAll OFFFlashes after1. Remove connecting lead wire of the
boardis over limit in short time.error is detectedcompressor, and operate again.
Check
code
Cause of operation
Inverter P.C. board is8 times*.2. If outdoor fan does not operate or
failure, IGBT shortage, etc. operate but stop after some period,
Compressor current isreplace the inverter P.C. board.
higher than limitation,3. If outdoor fan operates normally,
lock rotor, etc.measure 3-Phase output of inverter
Compressor position-detectAll OFFFlashes after1. Remove connecting lead wire of the
circuit error or short-circuiterror is detectedcompressor, and operate again.
between winding of8 times*.2. If outdoor fan does not operate or
compressor.operation but stop after some period,
Current-detect circuit ofAll OFFFlashes afterEven if trying to operate again, all
inverter P.C. board error.error is detectedoperations stop, replace inverter
temperature sensor iserror is detected2. In case of the sensor and its
disconnection or shortage.4 times*.connection is normal, check the
Outdoor fan failure or itsAll OFFFlashes after1. Check the motor, measure winding
drive-circuit on the invertererror is detectedresistance, shortage or lock rotor.
P.C. board failure.8 times*.2. Check the inverter P.C. board.
TO sensor ; The outdoorOperation Record error1. Check sensors TO and connection.
temperature sensor is
disconnection or shortage.
All OFFFlashes after
error is detected
4 times*.
continues. after detected
4 times*.
But does not
flash display.
1. Check sensors, TE, TS connection. In
case of sensors and it’s connection is
normal, check the inverter P.C. board
2. Check 4way valve operation/position.
In case TE, TS detected temperature
relationship are different from normal
operation, “18” might be detected.
inverter P.C. board.
2. In case of the sensor and its
connection is normal, check the
inverter P.C. board.
Page 83
Block distinctionOperation of diagnosis function
FILE NO. SVM-19040
- 83 -
Check
code
Block
Outdoor P.C.
board
Check
code
Cause of operation
Compressor drive output error.All OFFFlashes after1. Check installation conditions such as
(Relation of voltage, currenterror is detectedpacked valve opening, refrigerant
and frequency is abnormal)8 times*. amount and power supply (rate +
Overloading operation ofboth of operation and non operation
compressor caused bycondition).
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 (Highoperation (sound of initial
current).operation, etc.)
Air
conditioner
status
Display flashing
error
Action and Judgment
10%,
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.
* 4or 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, 8, 11 or 18 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.
The othersReturn signal of the outdoorIndoor unitFlashes when1. Check power supply (Rate +
(includingunit has been sent whenoperateserror is detected. 2. If the air conditioner repeat operates
compressor)operation start. But aftercontinue.Flashing stopand stop with interval of approx. 10
that, signal is stop some time.Outdoor unit and outdoor unitto 40 minutes.
Instantaneous powerstop.start to operateCheck protector (hardware) such
failure.when the returnas Hi-Pressure switch,
Some protectorsignal from theThermal-Relay, etc.
(hardware) of theoutdoor unit isCheck refrigerant amount, packed
outdoor unit opennormal.valve opening and any possibility
circuit of signal.cause which may affect high
Signal circuit of indoortemperature or high pressure.
P.C. board or outdoor3. Check operation signal of the indoor
P.C. board is failureunit 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.
10%)
Page 84
Block distinctionOperation of diagnosis function
FILE NO. SVM-19040
- 84 -
Check
code
Block
The others
(including
compressor)
Check
code
Cause of operation
Compressor does not rotate.All OFFFlashes after1. Remove connecting lead wire of the
Because of missed wiring,error is detectedcompressor, and operate again.
missed phase or shortage.8 times*.2. If outdoor fan does not operate or
Discharge temperature All OFFFlashes after1. Check sensors TD.
o
exceeded 117
C.
Air
conditioner
status
Display
Action and Judgment
flashing error
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.
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 currentAll OFFFlashes after1. Check installation conditions such as
though operation Hz iserror is detectedpacked valve opening, refrigerant
decreased to minimum limit.8 times*. amount and power supply (rate +
Installation problem.both of operation and non operation
Instantaneous powercondition).
failure.2. Check P.M.V. by measure the
Refrigeration cycleresistance of the coil and confirm its
problem.operation (sound of initial
Compressor break down.operation, etc.)
Compressor failure (High
current).operation, etc.)
3. Observe any possibility cause which
may affect high current of compressor.
4. If 1, 2 and 3 are normal, replace
compressor.
10%,
Page 85
Block distinctionOperation of diagnosis function
FILE NO. SVM-19040
- 85 -
Check
code
Block
The others
(including
compressor)
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.
Instantaneous power
failure.
Some protector
(hardware) of the
outdoor unit open circuit
of signal.
Signal circuit of indoor
P.C. board or outdoor
P.C. board is failure in
some period.
TE, TC high tmperature
TE for cooling operation
TC for heating operation.
Indoor unit Flashes when 1.
Air
conditioner
status
operates
continue.
Outdoor unit
stop.
Display
flashing error
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
. Check power supply (Rate +10%)
. If the air conditioner repeat operat
2.
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
cause which may affect high
temperature or high pressure.
3.
. Check operation signal of the indo
unit by using diode. Measure voltage
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.
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, 11 or 18 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.
Page 86
11-5. Judgment of Trouble by Every Symptom
FILE NO. SVM-19040
- 86 -
11-5-1. Indoor Unit (Including Remote Controller)
(1) Power is not turned on (Does not operate entirely)
<Primary check>
1. Is the supply voltage normal?
2. Is the normal voltage provided to the outdoor unit?
3. Is the crossover cable connected properly?
4. Is the fuse (F01) blown?
(For 05, 07, 10, 13, 16K)
Turn off power
supply once, and 5
second later, turn it
on again.
NO
Is OPERATION
lamp blinking?
YES
Is fuse (F01)
of indoor control
board blown?
NO
Is it possible to
turn on power
supply by pressing
[ ]
button
on remote
control?
YES
YES
(DB01,C03,T01
and IC11)
are defective.
NO
Parts
transmission
remote control
flash normally,
and is its signal
transmitted
properly?
Does
mark on
YES
NO
Does
fan motor
connector
between 1
3
and
short-circuit?
Remote control is
defective.
Refer to (4)
"Troubleshooting for
Remote Control.
YES
"
Operation
Check item
Conceivable principle
cause
Measure
Item by symptoms
Unit operates
normally.
Is voltage
(DC 12V or 5V)
NO
Is the
voltage
across C03
mesured
DC 310V~340V?
YES
Are DC 5V,
DC 12V
supplied
to main
P.C. board?
YESYES
B
•
e s
NO
NO
ure to disconnect the motor connector CN10 after shut off the power supply, or it will be a cause of
damage of the motor
indicated on
rear of indoor
control board
normal?
Refer to
<Primary check>
or this problem
is one step short
of power P.C.
board block.
Turn off breaker
once and turn it
on again after
removing motor.
.
YES
Are DC 5V,
or DC 12V
supplied
to main
P.C. board?
NO
NO
Microcomputer
is defective.
Regulator IC
(IC14) or T01
are defective
Replace main
P.C. board.
Replace motor
.
Page 87
(2) Power is not turned on though Indoor P.C. board is replaced
FILE NO. SVM-19040
- 87 -
<Confirmation procedure>
Turn on power supply.
Does operation lamp flash?
YESYES
NONO
Is it wired as shown in Figure below?
Return the wiring of the
power relay is returned to
the normal procedure.
To the paragraph of
"No Power turns on".
WP-039
Page 88
11-5. Judgment of Trouble by Every Symptom
FILE NO. SVM-19040
- 88 -
11-5-1. Indoor Unit (Including Remote Controller)
(1) Power is not turned on (Does not operate entirely)
<Primary check>
1. Is the supply voltage normal?
2. Is the normal voltage provided to the outdoor unit?
3. Is the crossover cable connected properly?
4. Is the fuse (F01) blown?
(For 18K)
Operation
Check Item
Considerable principle cause
of indoor control
YES
of indoor control
Turn off power supply once, and
5 second later, turn it on again.
NO
Is OPERATION indicator flashing?
Is fuse (F01)
board blown?
NO
Is fuse (F02)
board blown?
NO
YES
Is it possible to turn on
A/C by pushing
[ ] button
on remote controller?
YESYES
Unit operates normally.
YES
Does transmission mark
NONO
on remote controller flash
normally,and is its signal
transmitted properly?
Point remote to digital
camera. Can see infrared
ray at sending LED
on camera monitor
when push [ ] button?
YES
NO
Measures
Item by symptoms
Remote controller is defective.
Refer to (5) “Troubleshooting
for remote controller”.
Replace remote control
(DC5V, 12V and 15V)
indicated on rear of
• Be sure to disconnect the motor connector CN36 after shut off the power supply, or it will be a cause of
damage of the motor.
Is voltage
indoor control
board nor mal?
NO
YES
Does connection
between PC Board
and reciver PCB
are connect properly?
NO
Reconnect housing
YES
Microcomputer
is defective.
Replace main
P.C. board
Replace fan
motor.
Page 89
(2) Power is not turned on though Indoor P.C. board is replaced
FILE NO. SVM-19040
- 89 -
<Confirmation procedure>
Turn on power supply.
Does operation lamp flash?
YESYES
NONO
Is it wired as shown in Figure below?
Return the wiring of the
power relay is returned to
the normal procedure.
To the paragraph of
"No Power turns on".
CN28
WP-038
Page 90
(3) Only the indoor motor fan does not operate
FILE NO. SVM-19040
- 90 -
<Primary check> (For 05, 07, 10, 13, 16K)
1. Is it possible to detect the power supply voltage (AC220–240V) between Q and R on the terminal block?
2. Does the indoor fan motor operate in cooling operation?
(In heating operation, the indoor fan motor does not operate for approximately 10 minutes after it is turned
on, to prevent a cold air from blowing in.)
Shut off the
power supply once.
Turn the power supply.
Does the fan stop in
no operating status?
YES
Start the operation
with low fan setting
in cool operation.
Does the fan rotate?
YES
Change the setting of
cooling to high fan.
Does the fan speed
become higher?
NO
NO
NO
Control P.C. board is defective.
Does AC 120 V
or higher voltage apply
to between red and black
lead of fan motor?
YES
Shut off the power supply.
Does the cross flow
fan rotate normally?
YES
Turn on the power supply.
Operation
stops
Replace the P.C. board.
Does connecting
terminal, connecting
NONO
NO
cable or power supply
cord completely?
Does not found the short
wire about connecting
cable and power cord?
YES
Repair the
bearing of
the fan.
Motor control circuit failure
(IC03, Q39 and D01) or 12 V
Switching power supply failure.
YES
Normal
Is the rotation signal (DC+5 V
output between 2 (gray lead wire)
and 3 (brown lead wire) of the motor
connector (CN11) when rotating the
cross flow fan by hand in no operating
status? (1 pulse/one turn)
YES
Replace the control
P.C. board.
−
0 V)
NO
Replace the P.C. board.
Replace the fan motor.
Replace connecting the
cable (or power cord),
thermal fuse and
terminal block.
Page 91
(3) Only the indoor motor fan does not operate
FILE NO. SVM-19040
- 91 -
<Primary check> (For 18K)
1. Is it possible to detect the power supply voltage (AC220–240V) between Q and R on the terminal block?
2. Does the indoor fan motor operate in cooling operation?
(In heating operation, the indoor fan motor does not operate for approximately 10 minutes after it is turned
on, to prevent a cold air from blowing in.)
Turn off power
supply once, and
turn it on again.
Does fan motor
continue to operate?
NO
Is fuse (F02)
of indoor control
board blown?
NO
Does check
operation LED flash?
YES
Start to operate
indoor unit in cooling
operation at airflow
level “LOW”.
Does indoor
fan operate?
YES
YES
Is it possible to detect
DC 1V or more between
+ and
5
connector (CN36)
– of
3
YES
YES
Does check connecting
NO
cable or power supply
cord complely?
YES
Does check
5V at display unit?
YES
Is it possible to detect
NO
DC 311–340V between
1
+ and 3 – of motor
connector (CN36)?
YES
(Motor connection condition)
Is it possible to detect DC 15V
between 4 + and 3 – of
motor connector (CN36)?
YES
motor
?
NO
NO
NO
Reconnecting the
in terconnection cable
and terminal block
Does check 5V
at main P.C board?
Replace
display unit
NO
Turn off indoor unit and remove
NO
connector from motor.
Then push [ ] button
on remote controller to stop
flashing lamp on indoor unit.
YES
NO
Replace indoor
fan motor.
Change airflow level
to “HIGH”.
Start to operate the
indoor unit in except
heating operation.
At this time, is it possible to
detect DC 1V or more between
5 + and 3 – of motor
connector (CN36)?
YES
BA
Is it possible to detect
DC 15V between
and 3 – of motor
connector(CN36)?
Turn off indoor unit and
NO
remove connector from motor.
Then start to operate indoor
unit with remote controller.
Start to operate the
indoor unit in except
heating operation.
At this time, is it possible
to detect DC 1V or more
between
of motor connector(CN36)?
(Check this condition within
15 seconds after
5
starting unit.)
4
+
YES
+ and 3 –
YES
NO
NO
Replace main
P.C. board.
Page 92
A
FILE NO. SVM-19040
- 92 -
Is it possible to
change airflow level
to “HIGH”?
YES
Fan motor
operates normally.
NO
B
Is it possible to
rotate cross-flow fan by
hand properly?
YES
Turn off indoor unit
and rotate cross-flow
fan by hand when the
unit is on standby.
At this time, is it possible to
detect DC 1V or more
between 5 + and 3 –
of motor connector
(CN36)?
YES
Does check display
on remote show high?
YES
Change the new PC
board. Does fan speed
change?
YES
NO
Does check cross-flow
NO
NO
NO
fan bearing normal
condition?
YES
NO
Replace
remote
Replace
motor
Replace bearing
of cross-flow fan.
Replace indoor
fan motor.
Replace main
P.C. board.
Page 93
(For AC fan motor) (For 05, 07, 10, 13, 16K)
FILE NO. SVM-19040
- 93 -
<Inspection procedure>
1. Remove the front panel. (Remove 2 screws.)
2. Remove the cover of the fan motor lead wires.
Check AC voltage with CN10 connector while the fan motor is rotating.
3.
NOTE :
• Using a tester, measure the resistance value of each winding coil.
• Do not disconnect the connector while the fan motor is rotating.
• For P.C. board side, proceed to the item "Only indoor fan does not operate"
of "Judgment of Trouble by Every Symptom".
WHI
5
CN10
BLK
3
RED
1
3
3
5
5
1
1
BRW
3
CN11
P.C. board
GRY
2
YEL
1
Position (P.C. board)
Between 3 (Black) - 1 (Red)
Between 3 (Black) - 5 (White)
Between 1 (Red) - 5 (White)
3
3
2
2
1
1
Resistance value (RAS-05, 07, 10, 13)
120.6
±
8.4
Ω
244.2
±
17.1
Ω
364.8
±
25.5
Ω
Resistance value (RAS-16)
115.6
±
8.1
Ω
146.2
261.8
± 10.2
±
18.3
Ω
Ω
Page 94
(4) Indoor fan motor automatically starts to rotate by turning on power supply
FILE NO. SVM-19040
- 94 -
[For DC fan motor] (For 18K)
<Cause>
The IC is built in the indoor fan motor. Therefore the P.C. board is also mounted to inside of the motor.
If the P.C. board is soldered imperfectly or the IC is defective, the fan motor may automatically rotate by turning
on power supply.
<Inspection procedure>
1. Remove the front panel. (Remove 2 screws.)
2. Remove the cover of the fan motor lead wires.
3. Check DC voltage with CN36 connector while the fan motor is rotating.
NOTE :
• Do not disconnect the connector while the fan motor is rotating.
• Use a thin test rod.
Indoor fan starts rotating when power supply is turned on.
P.C. board
(Check output DC voltage of fan motor on P.C. board.)
Check that A or B selected on the main unit is matched with A or B selected on the remote controller.
Is there direct
sunlight on the
receptor of the air
conditioner?
YES
NO
Is there any
thyristor
fluorescent light
nearly?
YES
YES
NONO
Push the [ ] button.
Does the transmission
indicator blink?
Is operation
possible when the
transmitter is moved
nearer to the infrared
signal receiver of the
air conditioner?
YES
Battery life
There is no beep from the indoor unit
The OPERATION lamp of the
air conditioner main unit does not light
NO
Reset the remote
control by take off
batteries
Push the [ ]
button
Avoid direct
sunlight.
NO
Keep the air
conditioner away
from thyristor
fluorescent light.
Is operation possible
when setting the
temporary switch of the
air conditioner main unit
to “TEST RUN” or
“TEMPORARY AUTO”?
YES
Can any signal tone
be heard in a transistor
radio when transmitting
within 5 cm distance
from the radio?
YES
P.C. board is failure.
Replace
P.C. board
NO
Replace the
batteries
NO
indicator light?
Normal
Dose the
transmission
YES
Is there any
beep and
operation?
YES
NO
Remote control
is failure.
Replace remote
control.
Page 96
11-5-2. Wiring Failure (Interconnecting and Serial Signal Wire)
FILE NO. SVM-19040
- 96 -
(1) Outdoor unit does not operate
1) Is the voltage between R and S of the indoor terminal block varied?
Confirm that transmission from indoor unit to outdoor unit is correctly performed based upon the follow-
ing 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
White
3
S5277G
2
S5277G or equivalent (G or J type)
(Diode with rated voltage of 400V
or more is acceptable.)
1
Terminal block
Tester
Normal time : Voltage swings between DC15 and 60V. ...................Inverter Assembly check (11-7-1.)
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.
Measure gas pressure.
Thermo. operation of compressor
Gas shortage
Gas leak
Pipe clogging
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
Refer to the chart in 11-6.
Page 97
11-6. How to Check Simple the Main Parts
FILE NO. SVM-19040
- 97 -
<Check procedure>
1C1E
Gas leakage,
disconnection of TS/TC
sensors (Check code 02, 1C)
Valve drive check
Discharge temp. error,
gas leakage
(Check code 03, 1E)
Is coil of the pulse motor valve
(P.M.V.) correctly set?
YES
Is connecter of coil connected to inverter?
YES
from valve when the air conditioner starts the operation after turning off power
Is positioning sound of valve (sound hitting to stopper) heard
of the air conditioner once?
YES
Are temp. sensors of indoor/outdoor units correctly set to the holder?
NOTE :
The temperature sensors which are used to control pulse motor valve
include indoor heat exchanger sensor (TC), outdoor heat exchanger temp.
sensor (TE), outdoor suction temp. sensor (TS) and outdoor sensor (TO).
YES
NO
NO
NO
NO
Set it correctly.
Set it correctly.
Replace coil valve.
Set it correctly.
Remove TC sensor connector from the P.C. board in indoor unit.
(Remove connector from the P.C. board.)
Operate the air conditioner in COOL mode by TEMP button
(“Beep” sound is heard if keeping pushed for 10 seconds.).
The operation enters temporary operation mode which fixes opening degree of compressor speed.
Check condensation at outlet of PMV, and then check operating pressure from the service port.
If there is condensation at outlet (1/4 inch=Ø6.35mm valve side),
Check the operating pressure from service port, and add gas if pressure is low.
Gas amount check and valve clogging check
Existence of condensation at outlet of P.M.V.
the valve is clogged.
YES
Replace valve.
Add gas.
Page 98
11-7. How to Diagnose Trouble in Outdoor Unit
FILE NO. SVM-19040
- 98 -
11-7-1. Summarized Inner Diagnosis of Inverter Assembly
(RAS-05, 07, 10, 13)
Table 11-7-1
Diagnosis/Process flowchartItem
Preparation
Remove connector
of compressor.
Check 15A fuse
(Part No.F01).
OK
Check
terminal voltage
of electrolytic
capacitor.
OK
NG
Replace fuse.
Check
electrolytic
capacitor, diode
block (DB01),
etc.
NG
Check
electrolytic
capacitor, diode
(DB01),
etc.
Check
Check
Contents
Tu r n “OFF” the power supply
breaker, and remove 3P
connector which connects
inverter and compressor.
• Check whether 15A fuse
on the control board
assembly is blown or
not.(F01)
Summary
If fuse was blown, be sure to
check the electrolytic
capacitor and diode block.
(DB01)
• Connect discharge
resistance (approx. 100Ω,
40W) or soldering iron
(plug) between +, –
terminals of the electrolytic capacitor (760µF) of
C07 (with printed
WARNING ELECTRIC
SHOCK)
on P.C. board.
Discharging position
(Discharging period
10 seconds or more)
Plug of
soldering iron
Does outdoor
fan rotate?
YES
NG
Replace
outdoor
fan motor.
NO
Remove connector
CN31 of outdoor fan
motor, and using a
tester, check resistance
value between every
phases at motor side.
OK
BA
Operation
Measure-
ment
Check
Stop
Check
Measure-
ment
Turn on the power breaker,
and operate the air conditioner in COOL mode by time
shortening.
Measure terminal voltage of
the electrolytic capacity.
760µF:450V
After operation, turn off the
power breaker after 2
minutes 20 seconds passed,
and discharge the electrolytic capacitor by soldering
iron.
Check voltage between
motor phases.
• Is not winding between
R‚ R-S
, or Q-S opened
Q
or short-circuited?
• Is not frame grounded with
, or S?
Q, R
OK
if 760µF → DC290 to 400V
Remove CN31 while pushing
the part indicated by an
by an arrow because CN31 is
a connector with lock.
-
→ Resistance between
phases should be
approx. 16 to 51Ω
→ Should be 100MΩ or
more.
Page 99
(RAS-16, 18)
FILE NO. SVM-19040
- 99 -
Diagnosis/Process flowchartItem
Preparation
Remove connector
of compressor.
Check 25A fuse
(Part No.F01).
OK
Check
terminal voltage
of electrolytic
capacitor.
OK
NG
Replace fuse.
Check
electrolytic
capacitor, diode
block (DB01),
etc.
NG
Check
electrolytic
capacitor, diode
(DB01),
etc.
Check
Check
Contents
Tu r n “OFF” the power supply
breaker, and remove 3P
connector which connects
inverter and compressor.
• Check whether 25A fuse
on the control board
assembly is blown or not.
(F01)
Summary
If fuse was blown, be sure to
check the electrolytic
capacitor and diode block.
(DB01)
• Connect discharge
resistance (approx. 100Ω,
40W) or soldering iron
(plug) between +, –
terminals of the electrolytic capacitor (760µF) of
C07 (with printed
WARNING ELECTRIC
SHOCK) on P.C. board.
Does outdoor
fan rotate?
YES
NG
Replace
outdoor
fan motor.
NO
Remove connector
CN31 of outdoor fan
motor, and using a
tester, check resistance
value between every
phases at motor side.
OK
BA
Operation
Measure-
ment
Check
Stop
Check
Measure-
ment
Turn on the power breaker,
and operate the air conditioner in COOL mode by time
shortening.
Measure terminal voltage of
the electrolytic capacity.
760µF:400V x 2
After operation, turn off the
power breaker after 2
minutes 20 seconds passed,
and discharge the electrolytic capacitor by soldering
iron.
Check voltage between
motor phases.
• Is not winding between
R‚ R-S
, or Q-S opened
Q
or short-circuited?
• Is not frame grounded with
, or S?
Q, R
OK
if 760µF → DC280 to 380V
Remove CN31 whilepushing
the part indicated by an
by an arrow because CN31
is a connector with lock.
-
→ Resistance between
phases should be
approx. 16 to 51Ω
→ Should be 100MΩ or
more.
Page 100
Diagnosis/Process flowchartItem
FILE NO. SVM-19040
- 100 -
Contents
Summary
Check
compressor
winding
resistance.
OK
Replace
control board.
BA
Replace control
board assembly.
NG
Replace
compressor.
Check
Operation
Check winding resistance
between phases of compressor, and resistance between
outdoor frames by using a
tester.
• Is not grounded.
• Is not short-circuited
between windings.
• Winding is not opened.
Remove connector CN31 of
the outdoor fan motor, turn
on the power supply breaker,
and perform the operation.
(Stops though activation is
prompted.)
Check operation within 2
minutes 20 seconds after
activation stopped.
→
OK if 20MΩ or more
→
OK if about
3.19Ω for RAS-05,07TAVG-EE
3.36Ω for RAS-10,13TAVG-EE
1.57Ω for RAS-16,18TAVG-EE
→
(Check by a digital tester.)
11-8. How to Check Simply the Main Parts
11-8-1. How to Check the P.C. Board (Indoor Unit)
(1) Operating precautions
1) When removing the front panel or the P.C. board, be sure to shut off the power supply breaker.
2) When removing the P.C. board, hold the edge of the P.C. board and do not apply force to the parts.
3) When connecting or disconnecting the connectors on the P.C. board, hold the whole housing. Do not pull
at the lead wire.
(2) Inspection procedures
1) When a P.C. board is judged to be defective, check for disconnection, burning, or discoloration of the
copper foil pattern or this P.C. board.
2) The P.C. board consists of the following 2 parts
a. Main P.C. board part :
DC power supply circuit, Indoor fan motor control circuit, CPU and peripheral circuits,
buzzer, and Driving circuit of louver.
b. Indication unit of infrared ray receiving infrared ray receiving circuit, LED :
To check defect of the P.C. board, follow the procedure described below.
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