<SUPER DIGITAL INVERTER>
RAV-SP562AT-ERAV-SP802AT-ERAV-SP1102AT-E RAV-SP1402AT-E
R410A
PRINTED IN JAPAN, Mar.,2007 ToMo
Page 2
ADOPTION OF NEW REFRIGERANT
This Air Conditioner is a new type which adopts a new refrigerant HFC (R410A) instead of the conventional
refrigerant R22 in order to prevent destruction of the ozone layer.
WARNING
Cleaning of the air filter and other parts of the air filter involves dangerous work in high places, so be sure to
have a service person do it. Do not attempt it yourself. The cleaning diagram for the air filter is there for the
service person, and not for the customer.
NOTE
A direct current motor is adopted for indoor fan motor in the Concealed Duct Standard Type air conditioner.
Caused from its characteristics, a current limit works on the direct current motor. When replacing the highperformance filter or when opening the service board, be sure to stop the fan. If an above action is executed
during the fan operation, the protective control works to stop the unit operation, and the check code “P12”
may be issued. However it is not a trouble. When the desired operation has finished, be sure to reset the
system to clear “P12” error code using the leak breaker of the indoor unit. Then push the operation stop
button of the remote controller to return to the usual operation.
15-3. Replacement of Main Parts (Sold Separately).............................................. 181
16. CORD HEATER INSTALLATION WORK ................................................ 183
16-1. Required parts for installation work (Recommendation) ............................ 183
16-2. Base Plate ....................................................................................................... 192
– 3 –
Page 4
SAFETY CAUTION
The important contents concerned to the safety are described on the product itself and on this Service Manual.
Please read this Service Manual after understanding the described items thoroughly in the following contents
(Indications/Illustrated marks), and keep them.
[Explanation of indications]
Indication
DANGER
WARNING
CAUTION
∗ Property damage : Enlarged damage concerned to property, furniture, and domestic animal/pet
Indicates contents assumed that an imminent danger causing a death or serious injury of
the repair engineers and the third parties when an incorrect work has been executed.
Indicates possibilities assumed that a danger causing a death or serious injury of the
repair engineers, the third parties, and the users due to troubles of the product after work
when an incorrect work has been executed.
Indicates contents assumed that an injury or property damage ( ∗) may be caused on the
repair engineers, the third parties, and the users due to troubles of the product after work
when an incorrect work has been executed.
Explanation
[Explanation of illustrated marks]
MarkExplanation
Indicates prohibited items (Forbidden items to do)
The sentences near an illustrated mark describe the concrete prohibited contents.
Indicates mandatory items (Compulsory items to do)
The sentences near an illustrated mark describe the concrete mandatory contents.
Indicates cautions (Including danger/warning)
The sentences or illustration near or in an illustrated mark describe the concrete cautious contents.
[Confirmation of warning label on the main unit]
Confirm that labels are indicated on the specified positions
(Refer to the Parts disassembly diagram (Outdoor unit).)
If removing the label during parts replace, stick it as the original.
DANGER
Turn “OFF” the breaker before removing the front panel and cabinet, otherwise an electric
shock is caused by high voltage resulted in a death or injury.
During operation, a high voltage with 400V or higher of circuit (∗) at secondary circuit of the highvoltage transformer is applied.
Tur n off breaker.
Execute discharge
between terminals.
Prohibition
If touching a high voltage with the naked hands or body, an electric shock is caused even if using an
electric insulator.
∗ : For details, refer to the electric wiring diagram.
When removing the front panel or cabinet, execute short-circuit and discharge between highvoltage capacitor terminals.
If discharge is not executed, an electric shock is caused by high voltage resulted in a death or injury.
After turning off the breaker, high voltage also keeps to apply to the high-voltage capacitor.
Do not turn on the breaker under condition that the front panel and cabinet are removed.
An electric shock is caused by high voltage resulted in a death or injury.
– 4 –
Page 5
Check earth wires.
Prohibition of modification.
Use specified parts.
Do not bring a child
close to the equipment.
Insulating measures
No fire
WARNING
Before troubleshooting or repair work, check the earth wire is connected to the earth
terminals of the main unit, otherwise an electric shock is caused when a leak occurs.
If the earth wire is not correctly connected, contact an electric engineer for rework.
Do not modify the products.
Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury.
For spare parts, use those specified (
If unspecified parts are used, a fire or electric shock may be caused.
∗: For details, refer to the parts list.
Before troubleshooting or repair work, do not bring a third party (a child, etc.) except
the repair engineers close to the equipment.
It causes an injury with tools or disassembled parts.
Please inform the users so that the third party (a child, etc.) does not approach the equipment.
Connect the cut-off lead cables with crimp contact, etc, put the closed end side
upward and then apply a water-cut method, otherwise a leak or production of fire is
caused at the users’ side.
When repairing the refrigerating cycle, take the following measures.
1) Be attentive to fire around the cycle. When using a gas stove, etc, be sure to put out fire
before work; otherwise the oil mixed with refrigerant gas may catch fire.
2) Do not use a welder in the closed room. When using it without ventilation, carbon
monoxide poisoning may be caused.
3) Do not bring inflammables close to the refrigerant cycle, otherwise fire of the welder may
catch the inflammables.
∗∗
∗).
∗∗
Refrigerant
Check the used refrigerant name and use tools and materials of the parts which
match with it.
For the products which use R410A refrigerant, the refrigerant name is indicated at a
position on the outdoor unit where is easy to see. To prevent miss-charging, the route of the
service port is changed from one of the former R22.
For an air conditioner which uses R410A, never use other refrigerant than R410A.
For an air conditioner which uses other refrigerant (R22, etc.), never use R410A.
If different types of refrigerant are mixed, abnormal high pressure generates in the refrigerating cycle and an injury due to breakage may be caused.
Do not charge refrigerant additionally.
If charging refrigerant additionally when refrigerant gas leaks, the refrigerant composition in
the refrigerating cycle changes resulted in change of air conditioner characteristics or
refrigerant over the specified standard amount is charged and an abnormal high pressure is
applied to the inside of the refrigerating cycle resulted in cause of breakage or injury.
Therefore if the refrigerant gas leaks, recover the refrigerant in the air conditioner, execute
vacuuming, and then newly recharge the specified amount of liquid refrigerant. In this time,
never charge the refrigerant over the specified amount.
When recharging the refrigerant in the refrigerating cycle, do not mix the refrigerant
or air other than R410A into the specified refrigerant.
If air or others is mixed with the refrigerant, abnormal high pressure generates in the
refrigerating cycle resulted in cause of injury due to breakage.
After installation work, check the refrigerant gas does not leak.
If the refrigerant gas leaks in the room, poisonous gas generates when gas touches to fire
such as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous.
Never recover the refrigerant into the outdoor unit.
When the equipment is moved or repaired, be sure to recover the refrigerant with recovering device. The refrigerant cannot be recovered in the outdoor unit; otherwise a serious
accident such as breakage or injury is caused.
Assembly/Cabling
After repair work, surely assemble the disassembled parts, and connect and lead the
removed cables as before. Perform the work so that the cabinet or panel does not
catch the inner cables.
If incorrect assembly or incorrect cable connection was done, a disaster such as a leak or
fire is caused at user’s side.
– 5 –
Page 6
WARNING
Insulator check
Ventilation
Be attentive to
electric shock
Compulsion
After the work has finished, be sure to use an insulation tester set (500V mugger) to
check the resistance is 2M
metal section (Earth position).
If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s
side.
When the refrigerant gas leaks during work, execute ventilation.
If the refrigerant gas touches to a fire, poisonous gas generates. A case of leakage of the
refrigerant and the closed room full with gas is dangerous because a shortage of oxygen
occurs. Be sure to execute ventilation.
When checking the circuit inevitably under condition of the power-ON, use rubber
gloves and others not to touch to the charging section.
If touching to the charging section, an electric shock may be caused.
When the refrigerant gas leaks, find up the leaked position and repair it surely.
If the leaked position cannot be found up and the repair work is interrupted, pump-down
and tighten the service valve, otherwise the refrigerant gas may leak into the room.
The poisonous gas generates when gas touches to fire such as fan heater, stove or cocking
stove though the refrigerant gas itself is innocuous.
When installing equipment which includes a large amount of charged refrigerant such
as a multi air conditioner in a sub-room, it is necessary that the density does not the
limit even if the refrigerant leaks.
If the refrigerant leaks and exceeds the limit density, an accident of shortage of oxygen is
caused.
For the installation/moving/reinstallation work, follow to the Installation Manual.
If an incorrect installation is done, a trouble of the refrigerating cycle, water leak, electric
shock or fire is caused.
ΩΩ
Ω or more between the charge section and the non-charge
ΩΩ
Check after rerair
Check after reinstallation
Put on gloves
Cooling check
After repair work has finished, check there is no trouble.
If check is not executed, a fire, electric shock or injury may be caused. For a check, turn off
the power breaker.
After repair work (installation of front panel and cabinet) has finished, execute a test
run to check there is no generation of smoke or abnormal sound.
If check is not executed, a fire or an electric shock is caused. Before test run, install the
front panel and cabinet.
Check the following items after reinstallation.
1) The ear th wire is correctly connected.
2) The power cord is not caught in the product.
3) There is no inclination or unsteadiness and the installation is stable.
If check is not executed, a fire, an electric shock or an injury is caused.
CAUTION
Be sure to put on gloves (
If not putting on gloves, an injury may be caused with the parts, etc.
(∗) Heavy gloves such as work gloves
When the power was turned on, start to work after the equipment has been
sufficiently cooled.
As temperature of the compressor pipes and others became high due to cooling/heating
operation, a burn may be caused.
∗∗
∗) during repair work.
∗∗
– 6 –
Page 7
•New Refrigerant (R410A)
This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer.
1. Safety Caution Concerned to New Refrigerant
The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of
refrigerant, the refrigerating oil has been also changed. Therefore, be sure that water, dust, the former
refrigerant or the former refrigerating oil is not mixed into the refrigerating cycle of the air conditioner with
new refrigerant during installation work or service work. If an incorrect work or incorrect service is performed, there is a possibility to cause a serious accident. Use the tools and materials exclusive to R410A to
purpose a safe work.
2. Cautions on Installation/Service
1) Do not mix the other refrigerant or refrigerating oil.
For the tools exclusive to R410A, shapes of all the joints including the service port differ from those of the
former refrigerant in order to prev ent mixture of them.
2) As the use pressure of the new refrigerant is high, use material thickness of the pipe and tools which are
specified for R410A.
3) In the installation time, use clean pipe materials and work with great attention so that water and others do
not mix in because pipes are affected by impurities such as water, oxide scales, oil, etc. Use the clean
pipes.
Be sure to brazing with flowing nitrogen gas. (Never use gas other than nitrogen gas.)
4) For the earth protection, use a vacuum pump for air purge.
5) R410A refrigerant is azeotropic mixture type refrigerant. Therefore use liquid type to charge the refrigerant. (If using gas for charging, composition of the refrigerant changes and then characteristics of the air
conditioner change.)
3. Pipe Materials
For the refrigerant pipes, copper pipe and joints are mainly used. It is necessary to select the most appropriate pipes to conform to the standard. Use clean material in which impurities adhere inside of pipe or joint to a
minimum.
1) Copper pipe
<Piping>
The pipe thickness, flare finishing size , flare nut and others differ according to a refrigerant type.
When us#ing a long copper pipe for R410A, it is recommended to select “Copper or copper-base pipe
without seam” and one with bonded oil amount 40mg/10m or less. Also do not use crushed, deformed,
discolored (especially inside) pipes. (Impurities cause clogging of expansion valves and capillary tubes.)
<Flare nut>
Use the flare nuts which are attached to the air conditioner unit.
2) Joint
The flare joint and socket joint are used for joints of the copper pipe. The joints are rarely used for installation of the air conditioner. However clear impurities when using them.
– 7 –
Page 8
4. Tools
1. Required T ools for R410A
Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary,
etc. Accordingly, the tools to be used are classified into the following three types.
1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))
2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)
3) Tools commonly used for R410A and for conventional refrigerant (R22)
The table below shows the tools exclusive for R410A and their interchangeability.
Tools exclusive for R410A (The following tools for R410A are required.)
Tools whose specifications are changed for R410A and their interchangeability
No.
Flare tool
Copper pipe gauge for
adjusting projection margin
Torque wrench
Gauge manifold
Charge hose
V acuum pump adapter
Electronic balance for
refrigerant charging
Refrigerant cylinder
Leakage detector
Charging cylinder
Used tool
Usage
Pipe flaring
Flaring by conventional
flare tool
Connection of flare nut
Evacuating, refrigerant
charge, run check, etc.
V acuum evacuating
Refrigerant charge
Refrigerant charge
Gas leakage check
Refrigerant charge
air conditioner installation
R410A
Existence ofWhether convennew equipment tional equipment
for R410Acan be used
Yes*(Note 1)
Yes*(Note 1)
YesNo
YesNo
YesNo
YesYes
YesNo
YesNo
(Note 2)No
Conventional air
conditioner installation
Whether conventional
equipment can be used
Yes
*(Note 1)
No
No
Yes
Yes
No
Yes
No
(Note 1) When flaring is carried out for R410A using the conventional flare tools, adjustment of projec-
tion margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.
(Note 2) Charging cylinder for R410A is being currently developed.
General tools (Conventional tools can be used.)
In addition to the above exclusive tools, the following equipments which ser ve also for R22 are necessary
as the general tools.
1) Vacuum pump
Use vacuum pump by
attaching vacuum pump adapter.
2) Torque wrench
3) Pipe cutter
4) Reamer
7) Screwdriver (+, –)
8) Spanner or Monkey wrench
9) Hole core drill
10) Hexagon wrench (Opposite side 4mm)
11) Tape measure
12) Metal saw
5) Pipe bender
6) Level vial
Also prepare the following equipments for other installation method and run check.
1) Clamp meter
2) Thermometer
3) IInsulation resistance tester
4) Electroscope
– 8 –
Page 9
1. SPECIFICATIONS
1-1. Indoor Unit
1-1-1. 4-Way Air Discharge Cassette Type
<Digital Inverter>
Revised : Mar. 2007
Model
Cooling capacity(kW)
Heating capacity(kW)
Po w er supply
Cooling
Electrical
characteristics
Heating
Main unit
Appearance
Outer
dimension
Total weight
Heat exchanger
Fan unitStandard air flow H/M/L(m³/min)
Air filter
Controller (Sold separately)
Connecting pipeLiquid side(mm)
Sound pressure levelH/M/L(dB•A)
Sound power levelH/M/L(dB•A)
Ceiling panel
(Sold separately)
Main unitWidth(mm)
Ceiling panel
(Sold separately)
Main unit(kg)
Ceiling panel (Sold separately)(kg)
Fan
Motor(W)
Indoor unitRA VOutdoor unitRA V-
Running current(A)
Po w er consumption(kW)
Po w er factor(%)
EER(W/W)
Energy efficiency class *
Energy rating **
Running current(A)
Po w er consumption(kW)
Po w er factor(%)
COP(W/W)
Energy efficiency class *
Energy rating **
Cooling capacity(kW)
Heating capacity(kW)
Po w er supply
Cooling
Electrical
characteristics
Heating
Indoor unitRA VOutdoor unitRA V-
Running current(A)
Po w er consumption(kW)
Po w er factor(%)
EER(W/W)
Energy efficiency class *
Energy rating **
Running current(A)
Po w er consumption(kW)
Po w er factor(%)
COP(W/W)
Energy efficiency class *
Energy rating **
Cooling capacity(kW)
Heating capacity(kW)
Po w er supply
Cooling
Electrical
characteristics
Heating
Main unit
Appearance
Outer
dimension
Total weight
Heat exchanger
Fan unitStandard air flow H/M/L(m³/min)
Air filterTCB-
Controller (Sold separately)
Connecting pipeLiquid side(mm)
Sound pressure levelH/M/L(dB•A)
Sound power levelH/M/L(dB•A)
Ceiling panel
(Sold separately)
Main unitWidth(mm)
Ceiling panel
(Sold separately)
Main unit(kg)
Ceiling panel (Sold separately)(kg)
Fan
Motor(W)
Indoor unitRA VOutdoor unitRA V-
Running current(A)
Po w er consumption(kW)
Po w er factor(%)
EER(W/W)
Energy efficiency class *
Energy rating **
Running current(A)
Po w er consumption(kW)
Po w er factor(%)
COP(W/W)
Energy efficiency class *
Energy rating **
Cooling capacity(kW)
Heating capacity(kW)
Po w er supply
Cooling
Electrical
characteristics
Heating
Main unit
Appearance
Outer
dimension
Total weight
Heat exchanger
Fan unitStandard air flow H/M/L(m³/min)
Air filterTCB-
Controller (Sold separately)
Connecting pipeLiquid side(mm)
Sound pressure levelH/M/L(dB•A)
Sound power levelH/M/L(dB•A)
Ceiling panel
(Sold separately)
Main unitWidth(mm)
Ceiling panel
(Sold separately)
Main unit(kg)
Ceiling panel (Sold separately)(kg)
Fan
Motor(W)
Indoor unitRA VOutdoor unitRA V-
Running current(A)
Po w er consumption(kW)
Po w er factor(%)
EER(W/W)
Energy efficiency class *
Energy rating **
Running current(A)
Po w er consumption(kW)
Po w er factor(%)
COP(W/W)
Energy efficiency class *
Energy rating **
Cooling capacity(kW)
Heating capacity(kW)
Po w er supply
Cooling
Electrical
characteristics
Heating
Main unit
Appearance
Outer
dimension
Total weight
Heat exchanger
Fan unitStandard air flow H/M/L(m³/min)
Air filter
Controller (Sold separately)
Connecting pipeLiquid side(mm)
Sound pressure levelH/M/L(dB•A)
Sound power levelH/M/L(dB•A)
Ceiling panel
(Sold separately)
Main unitWidth(mm)
Ceiling panel
(Sold separately)
Main unit(kg)
Ceiling panel (Sold separately)(kg)
Fan
Motor(W)
Indoor unitRA VOutdoor unitRA V-
Running current(A)
Po w er consumption(kW)
Po w er factor(%)
EER(W/W)
Energy efficiency class *
Energy rating **
Running current(A)
Po w er consumption(kW)
Po w er factor(%)
COP(W/W)
Energy efficiency class *
Energy rating **
Cooling capacity(kW)
Heating capacity(kW)
Po w er supply
Cooling
Electrical
characteristics
Heating
Indoor unitRA VOutdoor unitRA V-
Running current(A)
Po w er consumption(kW)
Po w er factor(%)
EER(W/W)
Energy efficiency class *
Energy rating **
Running current(A)
Po w er consumption(kW)
Po w er factor(%)
COP(W/W)
Energy efficiency class *
Energy rating **
Drain pipe connecting port
for vinyl chloride pipe
(Inner dia. 32, VP. 25)
75
Main unit dimension 800
Hanging bolt pitch 700
50
131
50
Ø26 Power supply,
remote controller
cable take-out port
638
498
393
41
196
243
Panel C.L
410
Ceiling open size
470
Panel external
dimension 500
5941
174
Suction port
flange
(Separate sold)
Suction port
panel
(Separate sold)
320
ABCDEFGHJKMNO
RAV-SM562BT
RAV-SM802BT
RAV-SM1102BT
RAV-SM1402BT
700 766 690 750 78012.76.425228028012410
10001066 9901050108015.99.525258029023410
1350141613401400143015.99.525293031034410
NOTE 1 :
For maintenance of the equipment, be sure to install
a check port A at the position as shown below.
NOTE 2 :
Using the drain up kit sold separately, drain-up by 300 (mm)
from drain pipe draw-out port of the main unit is necessary.
The drain-up over 300mm or more is impossible.
* The refrigerating cycle of the indoor units differs according to
the models to be combined. For the refrigerating cycles of the
other indoor units, refer to the corresponding Service Manuals
described in the list on the cover.
Refrigerant pipe
at gas side
Outer dia. ØA
Packed valve
Outer dia. ØA
Strainer
TO sensor
Section shape
of heat insulator
Outdoor unit
Refrigerant pipe
at liquid side
Outer dia. ØB
Packed valve
Outer dia. ØB
Modulating
(PMV)
(CAM-B30YGTF-2)
Min.
5m
Max.
50m
Rotary compressor
(DA220A2F-20L1)
Accumulator
(1500cc)
Standard
CoolingOverload
Low load
Standard
HeatingOverload
Low load
TD sensor
Muffler
Pressure
(MPa)
PdPs
2.711.03
3.481.16
1.920.74
2.220.72
3.471.16
1.790.25
4-way valve
(STF-0213Z)
Ø25 × L210
Ø25 × L160
Discharge
(TD)
75
81
34
32
81
71
Heat exchangerØ8
1 row 30 stages
FP1.3 flat fin
Pipe surface temperature (°C)
Suction
(TS)
15
20
5
6
20
–16
Indoor heat
exchanger
(TC)
10
16
2
38
55
30
TE
sensor
Outdoor heat
exchanger
(TE)
38
51
11
2
15
–18
Capillary
Ø3ר2×
L530
Compressor
revolutions per
second (rps)
*
43
44
24
41
41
70
Strainer
R410A 1.5 kg
Indoor
fan
HIGH
HIGH
LOW
HIGH
LOW
HIGH
temp. conditions
Indoor Outdoor
18/15.5–5/–
Cooling
Heating
Indoor/Outdoor
(DB/WB) (°C)
27/1935/–
32/2443/–
20/–7/6
30/–24/18
15/–
–15/(70%)
4 poles are provided to this compressor.
*
The compressor frequency (Hz) measured with a clamp meter is 2 times of revolutions (rps) of the compressor.
* The refrigerating cycle of the indoor units differs according to
the models to be combined. For the refrigerating cycles of the
other indoor units, refer to the corresponding Service Manuals
described in the list on the cover.
Refrigerant pipe
at gas side
Outer dia. ØA
Packed valve
Outer dia. ØA
Strainer
TO sensor
Section shape
of heat insulator
Outdoor unit
Refrigerant pipe
at liquid side
Outer dia. ØB
Packed valve
Outer dia. ØB
Modulating
(PMV)
(CAM-B30YGTF-2)
Min.
5m
Max.
50m
Rotary compressor
(DA220A2F-20L1)
Accumulator
(1500cc)
Standard
CoolingOverload
Low load
Standard
HeatingOverload
Low load
TD sensor
Muffler
Pressure
(MPa)
PdPs
2.720.93
3.571.10
1.890.74
2.580.68
3.491.22
2.300.25
4-way valve
(STF-0213Z)
Ø25 × L210
Ø25 × L160
Discharge
(TD)
74
80
34
72
79
91
Heat exchangerØ8
1 row 30 stages
FP1.3 flat fin
Pipe surface temperature (°C)
Suction
(TS)
12
21
7
4
19
–17
Indoor heat
exchanger
(TC)
11
17
2
41
55
37
TE
sensor
Outdoor heat
exchanger
(TE)
40
52
12
2
16
–19
Capillary
Ø3ר2×
L530
Compressor
revolutions per
second (rps)
*
55
47
24
62
28
90
Strainer
R410A 2.1 kg
Indoor/Outdoor
Indoor
fan
HIGH
HIGH
LOW
HIGH
LOW
HIGH
temp. conditions
Indoor Outdoor
27/1935/–
32/2443/–
18/15.5–5/–
20/–7/6
30/–24/18
15/–
Cooling
Heating
(DB/WB) (°C)
–15/(70%)
4 poles are provided to this compressor.
*
The compressor frequency (Hz) measured with a clamp meter is 2 times of revolutions (rps) of the compressor.
* The refrigerating cycle of the indoor units differs according to
the models to be combined. For the refrigerating cycles of the
other indoor units, refer to the corresponding Service Manuals
described in the list on the cover.
Refrigerant pipe at gas side
Outer dia. ØA
Refrigerant pipe at liquid side
Outer dia. ØB
Section shape
of heat insulator
Ball valve
Outer dia. ØA
Outdoor unit
Strainer
Check joint
TO sensor
Distributor
(Strainer incorporated)
TC sensor
Packed valve
Outer dia. ØB
PMV
(UKV-25D22)
Min.
5m
Max.
70m
Accumulator
(2500cc)
compressor
(DA420A3F – 21M)
Standard
CoolingOverload
Low load
Standard
HeatingOverload
Low load
TD sensor
Rotary
PdPs
2.550.98
3.281.08
1.760.76
2.580.73
3.431.18
2.100.32
(STF-0401G)
Muffler
Pressure
(MPa)
4-way valve
Ø25 × L210
Ø25 × L180
Discharge
(TD)
69
82
47
68
75
88
TE sensor
Heat exchanger
2 row 52 stages
Outside :
Ø8 FP1.3 flat fin
Inside :
Ø9.52 FP1.5 flat fin
Pipe surface temperature (°C)
Suction
(TS)
12
17
8
3
20
–14
Indoor heat
exchanger
(TC)
10
16
5
40
56
34
Outdoor heat
exchanger
(TE)
40
48
27
3
16
–13
Distributor
Compressor
revolutions per
second (rps)
*
40
50
24
44
24
63
Strainer
R410A 2.95kg
Cooling
Heating
Indoor/Outdoor
Indoor
fan
HIGH
HIGH
LOW
HIGH
LOW
HIGH
temp. conditions
(DB/WB) (°C)
Indoor Outdoor
27/1935/–
32/2443/–
18/15.5–5/–
20/–7/6
30/–24/18
15/–
–15/(70%)
4 poles are provided to this compressor.
*
The compressor frequency (Hz) measured with a clamp meter is 2 times of revolutions (rps) of the compressor.
* The refrigerating cycle of the indoor units differs according to
the models to be combined. For the refrigerating cycles of the
other indoor units, refer to the corresponding Service Manuals
described in the list on the cover.
Refrigerant pipe
at gas side
Outer dia. ØA
Section shape
of heat insulator
Ball valve
Outer dia. ØA
Outdoor unit
Strainer
Check joint
TO sensor
Distributor
(Strainer incorporated)
TC sensor
Refrigerant pipe
at liquid side
Outer dia. ØB
Packed valve
Outer dia. ØB
PMV
(UKV-25D22)
Min.
5m
Max.
70m
Accumulator
(2500cc)
(DA420A3F – 21M)
Standard
CoolingOverload
Low load
Standard
HeatingOverload
Low load
TD sensor
Muffler
Rotary
compressor
Pressure
(MPa)
PdPs
2.760.91
3.461.03
1.770.78
2.650.69
3.331.08
2.500.22
4-way valve
(STF-0401G)
Ø25 × L210
Ø25 × L180
Discharge
(TD)
74
82
48
75
74
98
Heat exchanger
2 row 52 stages
Outside :
Ø8 FP1.3 flat fin
Inside :
Ø9.52 FP1.5 flat fin
Pipe surface temperature (°C)
Suction
(TS)
11
17
9
3
19
–22
Indoor heat
exchanger
(TC)
9
16
6
43
55
43
TE sensor
Outdoor heat
exchanger
(TE)
39
48
27
3
15
–18
Distributor
Compressor
revolutions per
second (rps)
*
53
51
24
55
24
73
Strainer
R410A 2.95kg
Indoor/Outdoor
Indoor
fan
HIGH
HIGH
LOW
HIGH
LOW
HIGH
temp. conditions
Indoor Outdoor
27/1935/–
32/2443/–
18/15.5–5/–
20/–7/6
30/–24/18
15/–
Cooling
Heating
(DB/WB) (°C)
–15/(70%)
4 poles are provided to this compressor.
*
The compressor frequency (Hz) measured with a clamp meter is 2 times of revolutions (rps) of the compressor.
: Fan motor
: Indoor temp. sensor
: Temp. sensor
: Temp. sensor
: Louver motor
: Drain pump motor
: Float switch
: Drain control relay
RY
303
CN304
(GRY)
CN67
(BLK)
Capacitor
~~
Fuse
F301
250V~
T6.3A
1
1 2
RED WHI BLK
233
5
445
321
1
Single phase 220V, 50Hz
32
Serial
NL
signal
RED
WHI
P301
BLK
Indoor unit
earth screw
Outdoor unit
earth screw
12
CN66
(WHI)
Closed-end
connector
3
CN309
2
(YEL)
1
3
3
22
1 1
CN41
(BLU)
1
233
1 2
Reactor
BLK
BLK
Wireless Remote
BLK
B
A
WHI
Wired Renote
Color
Identification
BLK
:
BLU
:
RED
:
GRY
:
PNK
:
GRN
:
WHI
:
BRN
:
ORN
:
YEL
:
Adapter for
Controller
B
A
Controller
BLACK
BLUE
RED
GRAY
PINK
GREEN
WHITE
BROWN
ORANGE
YELLOW
– 41 –
Page 42
– 42 –
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 4-way valve coil is turned on
while the cooling operation
NOTE
Compressor
:
CM
Pulse motor valve
:
PMV
Fan motor
:
FM
Heat exchanger Temp. Sensor
:
TE
Discharge T emp . Sensor
:
TD
Outdoor T emp . Sensor
:
TO
Suction T emp . Sensor
:
TS
Insulated Gate Bipolar Transistor
:
IGBT
Rectifier
:
DB
Curreut T r ansformer
:
CT
Color Identification
BLK
:
BLU
RED
GRY
PNK
BLACK
:
BLUE
:
RED
:
GRAY
:
PINK
WHI
BRN
ORN
YEL
PUR
Compressor
CM
:
WHITE
:
BROWN
:
ORANGE
:
YELLOW
:
PURPLE
Reactor
212
3 3
YEL
YEL
BRN
YEL
ORN
212
5-2. Outdoor Unit (Wiring Diagram)
RAV-SM563AT-E, RAV-SM803AT-E
RED
WHI
BLK
P25
P24
P23
P22
P21
P20
P35
P34
P19
P18
P11
P08
P04
P05
P06
DB01
Q404
1
3
1
RED
WHI
BLK
223
1
3
1
SW802
MCC-1530
Sub P.C. Board
BLK
Q200~205
IGBT
Power
relay
DB02
R221
R220
R219
L03C13
CT
Relay
PUR
P.C. Board
(MCC-5009)
F03
Fuse
T3.15A
AC250V
C12 C14
112
2
Reactor
CN701
Q300~305
MOS-FET
R321
R320
R319
Varistor
L01
Surge
absorber
Varistor
F01
Fuse
T25A
AC250V
P03
P10
ORN
WHI
BLK
ORN
RED
P7P32P33
3
1
1
3
BLKP30P31CN605
Coil for
4-WAY
VALVE
Fuse 250V~
T6.3A
Reactor
RED
1
1
CN300
CN700
P02
WHI CN806
For optional P.C. Board
WHI
BLK
GRN/YEL
WHI
3
3
2
2
1
1
6
6
5
5
4
4
3
3
2
2
1
1
CN603
CN602
CN601
CN600
4 52 31223
BLK
WHI
RED
Fan motor
Pulse motor valve
3
2
131
212
1
3
2
131
212
1
FM
PMV
TS
(Suction pipe
temp. sensor)
TO
(Outdoor
temp. sensor)
TD
(Discharge pipe
temp. sensor)
TE
(Condenser pipe
temp. sensor)
NL321
To indoorPower supply
220-240V~ 50Hz
Page 43
Color Identification
BLK
:
BLU
RED
GRY
PNK
BLACK
:
BLUE
:
RED
:
GRAY
:
PINK
WHI
BRN
ORN
YEL
PUR
:
WHITE
:
BROWN
:
ORANGE
:
YELLOW
:
PURPLE
Reactor Reactor
P09
1
GRY
P12
221
GRY
1
WHI
P08
221
WHI
P13
P29ORN
P21 BRN
P24RED
RAV-SM1103AT-E, RAV-SM1403A T-E
~
~
~
P28 GRY
YELBLU
P17
P19
P20
P18
BLK
RED
WHI
F01 Fuse
T25A, 250V~
Coil for
4-WAY
Valve
RED
WHI
To indoor unitPower supply
CN700 YEL
20SF
CN02 BLK
BLK
BLU
BLU
F02
Fuse
T25A, 250V~
5
31
CN13
RED
1
1
Serial
communication
circuit
223
3
5
BLK
5
CN01
RED
53
44556
CN702
WHI
6
1
3 3
1
3 3
5 5
1
1
RY300
1
RED
1
1
F01 Fuse
T3.15A 250V~
PMV
Pulse motor valveFan motor
Power factor
control
21
CN05
WHI
1
ORN
CN04
WHI
211
SUB P.C. board
(MCC-1531)
223
1
CN301
WHI
1
WHI
RED
FM
CN01
RED
CN02
WHI
CN03
– 43 –
Fuse
T6.3A,
250V~
RED
NL123
220-240V~ 50Hz
RY01
P.C. board
(MCC-1438)
445
223
1
3
1
PNK
RED
BLU
445
223
1
3
1
Fan motor drive circuit
445
223
1
3
1
3
BLK
YEL
PNK
5
WHI
5
5
GRY
CN06
RED
BLK
CN800
RED
CN300
WHI
1
3 3
CN04
WHI
CN03
WHI
1
3
1
CN600
BLK
3
1
YEL
BLU
3
1
3
1233
Fuse
F300
T5A,
250V
445
223
1
1
1
1
Optional
P.C. board
MCC-1522
223
5
3
445
5
3
CN804
BLU
1
221
TH
CM
PMV
FM
TE
TH
TD
TO
TS
IGBT
CN09 RED
CN10 WHI
CN11 BLK
IGBT MODULE
TSTETO
1
1
CN605
WHI
CN500
BLU
2 2
1 1
ORN
ORN
1
CN604
WHI
221
1
CN601
WHI
2 315 6487
Thermostat for
compressor
49C
221
CN801
TD
1
233
1
CN600
WHI
NOTE
Compressor
:
Pulse motor valve
:
Fan motor
:
Heat exchanger Temp. Sensor
:
Temp. Sensor
:
Discharge T emp . Sensor
:
Outdoor T emp . Sensor
:
Suction T emp . Sensor
:
Insulated Gate Bipolar Transistor
:
WV U
CM
Compressor
Page 44
RAV-SP562AT-E, RAV-SP802AT-E
BLU
1
CN700
1
YEL
RED
1
RED
3 3
CN02
BLK
1
3 3
5 5
GRN/YEL
Reactor Reactor
P09
1
RED
1
1
1
1
221
1
GRY
GRY
P12
31
Serial
communication
circuit
223
3
P13
F02
Fuse
T25A, 250V~
5
CN13
RED
5
BLK
5
CN01
RED
53
44556
CN702
WHI
6
Power factor
CN301
221
1
WHI
WHI
P08
1
RY300
F01 Fuse
T3.15A 250V~
1
PMV
Pulse motor valveFan motor
P29ORN
P21 BRN
P24RED
control
21
CN05
WHI
1
ORN
CN04
WHI
211
SUB P.C. board
(MCC-1531)
223
1
WHI
1
RED
FM
3
WHI
BLK
~
~
~
P28 GRY
RY01
P.C. board
(MCC-1438)
445
223
1
1
PNK
RED
223
1
1
Fan motor drive circuit
223
1
1
YEL
3
3
BLU
3
445
PNK
WHI
445
5
GRY
CN06
RED
5
BLK
CN800
RED
5
CN300
WHI
WHI
CN03
WHI
Fuse
F300
T5A,
250V
3
1
YEL
BLU
3
1
3
1233
CN607
YEL
3
1
CN04
YELBLU
P19
P20
1
1
CN605
CN606
RED
CN500
BLU
2 2
1 1
:
CM
:
PMV
:
FM
:
TE
:
TD
:
TO
:
TS
:
IGBT
P17
P18
CN20 RED
CN21 WHI
CN22 BLK
IGBT MODULE
WV U
CM
TSTETO
221
221
1
CN601
WHI
2 315 6487
CN801
Thermostat for
compressor
49C
WHI
ORN
ORN
12121
CN604
WHI
NOTE
Compressor
Pulse motor valve
Fan motor
Heat exchanger Temp. Sensor
Discharge T emp . Sensor
Outdoor T emp . Sensor
Suction T emp . Sensor
Insulated Gate Bipolar Transistor
TD
1
233
1
CN600
WHI
Compressor
Color Identification
BLK
:
BLACK
BLU
:
BLUE
RED
:
RED
GRY
:
GRAY
PNK
:
PINK
RED
WHI
– 44 –
Reactor
Fuse
T6.3A,
250V~
WHI
REDRED
RED
CN01
CN02
CN03
BLK
WHI
BRN
ORN
YEL
PUR
F01 Fuse
T25A, 250V~
WHI
BLK
:
WHITE
:
BROWN
:
ORANGE
:
YELLOW
:
PURPLE
Coil for
4-WAY
Valve
WHI
RED
RED
20SF
BLU
3
3
WHI
NL123
To indoor unitPower supply
220-240V~ 50Hz
Page 45
Color Identification
BLK
:
BLU
RED
GRY
PNK
BLACK
:
BLUE
:
RED
:
GRAY
:
PINK
WHI
BRN
ORN
YEL
PUR
:
WHITE
:
BROWN
:
ORANGE
:
YELLOW
:
PURPLE
Reactor Reactor
P09
1
GRY
P12
221
GRY
1
WHI
P08
221
WHI
P13
P21 BRN
P24RED
P29ORN
RAV-SP1102AT-E, RAV-SP1402A T-E
~
~
~
P28 GRY
YELBLU
P17
P19
P20
P18
BLK
WHI
F01 Fuse
T25A, 250V~
RED
BLK
220-240V~ 50Hz
WHI
RED
NL123
CN700 YEL
20SF
Coil for
4-WAY
Valve
GRN/YEL
WHI
BLU
BLU
1
3 3
CN02
BLK
1
3 3
5 5
F02
Fuse
T25A, 250V~
Power factor
5
31
CN13
1
RED
1
1
1
RY300
F01 Fuse
T3.15A 250V~
1
1
1
Serial
communication
circuit
223
3
RED
5
BLK
5
CN01
RED
53
44556
CN702
WHI
6
1
ORN
CN301
WHI
PMV
Pulse motor valveFan motor
control
21
CN05
WHI
CN04
WHI
211
SUB P.C. board
223
1
1
WHI
RED
FM
CN01
RED
CN02
WHI
CN03
– 45 –
Fuse
T6.3A,
250V~
WHI
REDRED
RED
To indoor unitPower supply
RY01
P.C. board
(MCC-1438)
445
223
1
3
1
PNK
RED
BLU
WHI
445
223
1
3
1
(MCC-1531)
Fan motor drive circuit
CN300
WHI
445
223
1
1
3
BLK
YEL
5
3
PNK
5
BLK
5
GRY
CN06
RED
CN800
RED
CN303
WHI
3
1
CN04
WHI
CN03
WHI
Fuse
F300
T5A,
250V
1
1
RED
223
WHI
CN600
BLK
3
1
BLU
3
3
1
1
YEL
TH
CN607
YEL
CN302
WHI
223
3
445
PNK
YEL
1
1233
3
BLK
FM
Fan motor
221
1
CN606
RED
5
GRY
TSTETO
1
1
CN605
WHI
CN500
BLU
ORN
2 2
1 1
ORN
Compressor
:
CM
Pulse motor valve
:
PMV
Fan motor
:
FM
Heat exchanger Temp. Sensor
:
TE
Temp. Sensor
:
TH
Discharge T emp . Sensor
:
TD
Outdoor T emp . Sensor
:
TO
Suction T emp . Sensor
:
TS
Insulated Gate Bipolar Transistor
:
IGBT
IGBT MODULE
221
12121
1
CN604
CN601
WHI
WHI
2 315 6487
Thermostat for
compressor
49C
NOTE
CN09 RED
CN10 WHI
CN11 BLK
1
221
1
CN600
WHI
CN801
TD
233
WV U
CM
Compressor
Page 46
6. SPECIFICATIONS OF ELECTRICAL PARTS
6-1. Indoor Unit
6-1-1. 4-Way Air Discharge Cassette Type
RAV-SM563UT-E, RAV-SM803UT-E
No.
1
Fan motor (for indoor)
2
Thermo. sensor (TA-sensor)
3
Heat exchanger sensor (TCJ-sensor)
4
Heat exchanger sensor (TC-sensor)
5
Float switch
6
Drain pump motor
Parts name
Type
SWF-230-60-1R
155 mm
Ø6 mm, 1200 mm
Ø6 mm, 1200 mm
FS-0218-102
ADP-1409
RAV-SM1103UT-E, RAV-SM1403UT-E, RAV-SP1102UT-E
No.
1
Fan motor
2
Thermo. sensor (TA-sensor)
3
Heat exchanger sensor (TCJ-sensor)
4
Heat exchanger sensor (TC-sensor)
5
Float switch
6
Drain pump motor
Parts name
Type
SWF-200-90-1R
155 mm
Ø6 mm, 1200 mm
Ø6 mm, 1200 mm
FS-0218-102
ADP-1409
Specifications
Output (Rated) 60 W, 220–240 V
10 kΩ at 25°C
10 kΩ at 25°C
10 kΩ at 25°C
Specifications
Output (Rated) 90 W
10 kΩ at 25°C
10 kΩ at 25°C
10 kΩ at 25°C
Output (Rated) 60 W, 220–240 V
Output (Rated) 120 W, 220–240 V
10 kΩ at 25°C
10 kΩ at 25°C
10 kΩ at 25°C
DC 15 V
10 mH, 1 A
– 47 –
Page 48
6-2. Outdoor Unit
RAV-SM563AT-E
Revised : Mar. 2007
No.
1
Fan motor
2
Compressor
3
Reactor
4
Outdoor temp. sensor (To-sensor)
5
Heat exchanger sensor (Te-sensor)
6
Suction temp. sensor (Ts-sensor)
7
Discharge temp. sensor (Td-sensor)
8
Fuse (Switching power (Protect))
9
Fuse (Inverter, input (Current protect)
10
4-way valve solenoid coil
11
Compressor thermo. (Protection)
12
Coil (Pulse Motor Valve)
RAV-SM803AT-E
No.
1
Fan motor
2
Compressor
3
Reactor
4
Outdoor temp. sensor (To-sensor)
5
Heat exchanger sensor (Te-sensor)
6
Suction temp. sensor (Ts-sensor)
7
Discharge temp. sensor (Td-sensor)
8
Fuse (Switching power (Protect))
9
Fuse (Inverter, input (Current protect))
10
4-way valve solenoid coil
11
Compressor thermo. (Protection)
12
Coil (Pulse Motor Valve)
Parts name
Parts name
Type
ICF-140-43-4R
DA150A1F-20F
CH-57
—
—
—
—
—
—
STF-01AJ502E1
US-622
CAM-MD12TF-6
Type
ICF-140-43-4R
DA150A1F-20F
CH-57
—
—
—
—
—
—
STF-01AJ502E1
US-622
CAM-MD12TF-6
Specifications
Output (Rated) 43 W
3 phase, 4P, 1100 W
10 mH, 16A
10 kΩ at 25°C
10 kΩ at 25°C
10 kΩ at 25°C
50 kΩ at 25°C
T3.15 A, AC 250 V
25 A, AC 250 V
—
OFF : 125 ± 4°C, ON : 90 ± 5°C
—
Specifications
Output (Rated) 43 W
3 phase, 4P, 1100 W
10 mH, 16 A
10 kΩ at 25°C
10 kΩ at 25°C
10 kΩ at 25°C
50 kΩ at 25°C
T3.15 A, AC 250 V
25 A, AC 250 V
AC 220 – 240 V
OFF : 125 ± 4°C, ON : 90 ± 5°C
—
RAV-SM1103AT-E
No.
1
Fan motor
2
Compressor
3
Reactor
4
Outdoor temp. sensor (To-sensor)
5
Heat exchanger sensor (Te-sensor)
6
Suction temp. sensor (Ts-sensor)
7
Discharge temp. sensor (Td-sensor)
8
Fuse (Switching power (Protect))
9
Fuse (Inverter, input (Current protect)
10
4-way valve solenoid coil
11
Compressor thermo. (Protection)
12
Coil (Pulse Motor Valve)
Parts name
Type
ICF-280-100-1R
DA420A3F-21M
CH-62
—
—
—
—
—
—
STF-01AJ502E1
US-622
UKV-U048E
– 48 –
Specifications
Output (Rated) 100 W
3 phase, 4P, 2000 W
6 mH, 18.5 A
10 kΩ at 25°C
10 kΩ at 25°C
10 kΩ at 25°C
50 kΩ at 25°C
T3.15 A, AC 250 V
25 A, AC 250 V
AC 220 – 240 V
OFF : 125 ± 4°C, ON : 90 ± 5°C
—
Page 49
RAV-SM1403AT-E
Revised : Mar. 2007
No.
1
Fan motor
2
Compressor
3
Reactor
4
Outdoor temp. sensor (To-sensor)
5
Heat exchanger sensor (Te-sensor)
6
Suction temp. sensor (Ts-sensor)
7
Discharge temp. sensor (Td-sensor)
8
Fuse (Switching power (Protect))
9
Fuse (Inverter, input (Current protect))
10
4-way valve solenoid coil
11
Compressor thermo. (Protection)
12
Coil (Pulse Motor Valve)
Parts name
RAV-SP562AT-E, RAV-SP802AT-E
No.
1
Fan motor
2
Compressor
3
Reactor
4
Outdoor temp. sensor (To-sensor)
5
Heat exchanger sensor (Te-sensor)
6
Suction temp. sensor (Ts-sensor)
7
Discharge temp. sensor (Td-sensor)
8
Fuse (Switching power (Protect))
9
Fuse (Inverter, input (Current protect))
10
4-way valve solenoid coil
11
Compressor thermo. (Protection)
12
Coil (Pulse Motor Valve)
13
Reactor
Parts name
Type
ICF-280-100-1R
DA420A3F-21M
CH-62
—
—
—
—
—
—
VHV-01AJ503C1
US-622
UKV-U048E
Type
ICF-140-63-2R
DA220A2F-20L1
CH-47
—
—
—
—
—
—
VHV-01AJ503C1
US-622
CAM-MD12TF-8
CH-43
Specifications
Output (Rated) 100 W
3 phase, 4P, 3500 W
6 mH, 18.5 A
10 kΩ at 25°C
10 kΩ at 25°C
10 kΩ at 25°C
50 kΩ at 25°C
T3.15 A, AC 250 V
25 A, AC 250 V
AC 220 – 240 V
OFF : 125 ± 4°C, ON : 90 ± 5°C
—
Specifications
Output (Rated) 63 W
3 phase, 4P, 2000 W
8 mH, 16 A
10 kΩ at 25°C
10 kΩ at 25°C
10 kΩ at 25°C
50 kΩ at 25°C
T3.15 A, AC 250 V
25 A, AC 250 V
OFF : 125 ± 4°C, ON : 90 ± 5°C
10 mH, 1 A
RAV-SP1102AT-E, RAV-SP1402A T-E
No.
1
Fan motor
2
Compressor
3
Reactor
4
Outdoor temp. sensor (To-sensor)
5
Heat exchanger sensor (Te-sensor)
6
Suction temp. sensor (Ts-sensor)
7
Discharge temp. sensor (Td-sensor)
8
Fuse (Switching power (Protect))
9
Fuse (Inverter, input (Current protect))
10
4-way valve solenoid coil
11
Compressor thermo. (Protection)
12
Coil (Pulse Motor Valve)
Parts name
Type
ICF-140-63-2R
DA420A3F-21M
CH-62
—
—
—
—
—
—
VHV-01AJ502E1
US-622
UKV-U011E
– 49 –
Specifications
Output (Rated) 63 W
3 phase, 4P, 3500 W
6 mH, 18.5 A
10 kΩ at 25°C
10 kΩ at 25°C
10 kΩ at 25°C
50 kΩ at 25°C
T3.15 A, AC 250 V
25 A, AC 250 V
AC 220 V
OFF : 125 ± 4°C, ON : 90 ± 5°C
—
Page 50
6-3. Accessory Separate Soldparts
TCB-DP22CE2 (Drain up kit)
RAV-SM562CT-E, RAV-SM802CT-E, RAV-SM1102CT-E, RAV -SM1402CT-E
This air conditioner adopts the new refrigerant HFC
(R410A) which does not damage the ozone layer.
The working pressure of the new refrigerant R410A
is 1.6 times higher than conventional refrigerant
(R22). The refrigerating oil is also changed in
accordance with change of refrigerant, so be careful
that water, dust, and existing refrigerant or refrigerating oil are not entered in the refrigerant cycle of
the air conditioner using the new refrigerant during
installation work or servicing time.
The next section describes the precautions for air
conditioner using the new refrigerant. Confor ming to
contents of the next section together with the
general cautions included in this manual, perform
the correct and safe work.
7-1. Safety During Installation/Servicing
As R410A’s pressure is about 1.6 times higher than
that of R22, improper installation/servicing may
cause a serious trouble. By using tools and materials exclusive for R410A, it is necessary to carry out
installation/servicing safely while taking the following
precautions into consideration.
1. Never use refrigerant other than R410A in an air
conditioner which is designed to operate with
R410A.
If other refrigerant than R410A is mixed, pressure
in the refrigeration cycle becomes abnormally
high, and it may cause personal injury, etc. by a
rupture.
2. Confirm the used refrigerant name, and use tools
and materials exclusive for the refrigerant R410A.
The refrigerant name R410A is indicated on the
visible place of the outdoor unit of the air conditioner using R410A as refrigerant. To prevent
mischarging, the diameter of the service port
differs from that of R22.
3. If a refrigeration gas leakage occurs during
installation/servicing, be sure to ventilate fully.
If the refrigerant gas comes into contact with fire,
a poisonous gas may occur.
4. When installing or removing an air conditioner,
do not allow air or moisture to remain in the
refrigeration cycle. Otherwise, pressure in the
refrigeration cycle may become abnormally high
so that a rupture or personal injury may be
caused.
5. After completion of installation work, check to
make sure that there is no refrigeration gas
leakage.
If the refrigerant gas leaks into the room, coming
into contact with fire in the 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 concentr ation
does not exceed the marginal le vel.
If the refrigerant gas leakage occurs and its
concentration exceeds the marginal level, an
oxygen starvation accident ma y 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.
7-2. Refrigerant Piping Installation
7-2-1. 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 m ust be chosen and
installed. Furthermore, it is necessary to use clean
copper pipes and joints whose interior surfaces are
less affected by contaminants .
1. Copper Pipes
It is necessary to use seamless copper pipes
which are made of either copper or copper alloy
and it is desirable that the amount of residual oil
is less than 40 mg/10 m. Do not use copper
pipes having a collapsed, deformed or discolored
portion (especially on the interior surface).
Otherwise, the expansion valve or capillary tube
may become blocked with contaminants.
As an air conditioner using R410A incurs pressure higher than when using R22, it is necessary
to choose adequate materials.
Thicknesses of copper pipes used with R410A
are as shown in Table 7-2-1. Never use copper
pipes thinner than 0.8 mm even when it is
available on the market.
NOTE:
Refer to the “7-6. Instructions for Re-use Piping
of R22 or R407C”.
– 51 –
Page 52
Table 7-2-1 Thicknesses of annealed copper pipes
Thickness (mm)
Nominal diameter
1/4
3/8
1/2
5/8
1. 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 7-2-3 to 7-2-6 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 7-2-2.
Outer diameter (mm)
6.4
9.5
12.7
15.9
Table 7-2-2 Minimum thicknesses of socket joints
R410AR22
0.800.80
0.800.80
0.800.80
1.001.00
Nominal diameter
1/4
3/8
1/2
5/8
Reference outer diameter of
copper pipe jointed (mm)
6.4
9.5
12.7
15.9
Minimum joint thickness
(mm)
0.50
0.60
0.70
0.80
7-2-2. 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 other than lubricating oils used in the installed air conditioner 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.
– 52 –
Page 53
c) Insertion of Flare Nut
d) Flare Processing
Make certain that a clamp bar and copper pipe have been cleaned.
By means of the clamp bar, perform the flare processing correctly.
Use either a flare tool for R410A or conventional flare tool.
Flare processing dimensions differ according
to the type of flare tool.
When using a conventional flare tool, be sure
to secure “dimension A” by using a gauge f or
size adjustment.
Fig. 7-2-1 Flare pr ocessing dimensions
Table 7-2-3 Dimensions related to flare processing for R410A
Nominal
diameter
Outer
diameter
(mm)
Thickness
(mm)
Flare tool for
R410A clutch type
ØD
A
A (mm)
Conventional flare tool
Clutch typeWing nut type
1/4
3/8
1/2
5/8
Nominal
diameter
1/4
3/8
1/2
5/8
6.4
9.5
12.7
15.9
0.8
0.8
0.8
1.0
0 to 0.5
0 to 0.5
0 to 0.5
0 to 0.5
Table 7-2-4 Dimensions related to flare processing for R22
Outer
diameter
(mm)
Thickness
(mm)
Flare tool for
R22 clutch type
6.4
9.5
12.7
15.9
0.8
0.8
0.8
1.0
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 typeWing 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 7-2-5 Flare and flare nut dimensions for R410A
Outer diameter
(mm)
6.4
9.5
12.7
15.9
Thickness
(mm)
0.8
0.8
0.8
1.0
Dimension (mm)
ABCD
9.1 9.2 6.513
13.213.5 9.720
16.616.012.923
19.719.016.025
– 53 –
Flare nut
width (mm)
17
22
26
29
Page 54
Table 7-2-6 Flare and flare nut dimensions for R22
Nominal
diameter
1/4
3/8
1/2
5/8
3/4
Outer diameter
(mm)
6.4
9.5
12.7
15.9
19.0
45
˚to 46
Thickness
(mm)
0.8
0.8
0.8
1.0
1.0
˚
BA
Dimension (mm)
ABCD
9.0 9.2 6.513
13.013.5 9.720
16.216.012.920
19.419.016.023
23.324.019.234
D
C
43˚to 45˚
Flare nut width
(mm)
17
22
24
27
36
Fig. 7-2-2 Relations between flare nut and flare seal surface
2. Flare Connecting Procedures and Precautions
a) Make sure that the flare and union portions do not have any scar or dust, etc.
b) Correctly align the processed flare surface with the union axis.
c) Tighten the flare with designated torque by means of a torque wrench. The tightening torque for R410A is
the same as that for conventional R22. Incidentally, when the torque is weak, the gas leakage may occur .
When it is strong, the flare nut may crac k and may be made non-removable. When choosing the tighten-
ing torque, comply with values designated by man ufacturers. Table 7-2-7 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 7-2-7 Tightening torque of flare for R410A [Reference values]
Nominal
diameter
1/4
Outer diameter
(mm)
6.4
Tightening torque
N•m (kgf•m)
14 to 18 (1.4 to 1.8)
Tightening torque of torque
wrenches available on the market
N•m (kgf•m)
16 (1.6), 18 (1.8)
3/8
1/2
5/8
9.5
12.7
15.9
33 to 42 (3.3 to 4.2)
50 to 62 (5.0 to 6.2)
63 to 77 (6.3 to 7.7)
– 54 –
42 (4.2)
55 (5.5)
65 (6.5)
Page 55
7-3. Tools
7-3-1. Required T ools
Refer to the “4. Tools” (Page 8)
7-4. Recharging of Refrigerant
When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the
following steps .
Recover the refrigerant, and check no refrigerant
remains in the equipment.
Connect the charge hose to packed valve service
port at the outdoor unit’s gas side.
When the compound gauge’s pointer has indicated
–0.1 Mpa (–76 cmHg), place the handle Low in the
fully closed position, and turn off the vacuum pump’s
power switch.
Connect the charge hose of the vacuum pump
adapter.
Open fully both packed valves at liquid and gas
sides.
Place the handle of the gauge manifold Low in the
fully opened position, and turn on the vacuum pump’s
power switch. Then, evacuating the refrigerant in the
cycle.
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.
(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)
Refrigerant cylinder
(With siphon pipe)
Check valve
Open/Close valve
for charging
Electronic balance for refrigerant charging
Fig. 7-4-1 Configuration of refrigerant charging
(Liquid side)
(Gas side)
– 55 –
(OUTDOOR unit)
Opened
Closed
Service port
Page 56
1) Be sure to make setting so that liquid can be charged.
2) When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.
It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant.
Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the
cylinder upside down if cylinder is not equipped with siphon.
[ Cylinder with siphon ][ Cylinder without siphon ]
Refrigerant
cylinder
Gauge manifold
OUTDOOR unit
cylinder
Refrigerant
Gauge manifold
OUTDOOR unit
Electronic
balance
R410A refrigerant is HFC mixed refrigerant.
Therefore, if it is charged with gas, the composition of the charged refrigerant changes and the
characteristics of the equipment varies.
7-5. Brazing of Pipes
7-5-1. Materials for Brazing
1. Silver brazing filler
Silver brazing filler is an allo y 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.
Fig. 7-4-2
Electronic
balance
Siphon
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.
7-5-2. 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.
– 56 –
Page 57
2. Characteristics required for flux
• Activated temperature of flux coincides with the
brazing temperature.
• Due to a wide effective temperature range, flux
is hard to carbonize.
• It is easy to remove slag after brazing.
• The corrosive action to the treated metal and
brazing filler is minimum.
• It excels in coating performance and is harmless to the human body.
As the flux works in a complicated manner as
described above, it is necessary to select an
adequate type of flux according to the type and
shape of treated metal, type of brazing filler and
brazing method, etc.
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 o xide film removing
capability due to the addition of compounds
such as potassium fluoride, potassium chloride
and sodium fluoride to the borax-boric acid
compound.
7-5-3. Brazing
As brazing work requires sophisticated techniques,
experiences based upon a theoretical knowledge, it
must be performed by a person qualified.
In order to prev ent the oxide film from occurring in
the pipe interior during brazing, it is effective to
proceed with brazing while letting dry Nitrogen gas
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.
4. Piping materials for brazing and used
brazing filler/flux
Piping
material
Copper - Copper
Copper - Iron
Iron - Iron
1) Do not enter flux into the refrigeration cycle.
2) When chlorine contained in the flux remains
within the pipe, the lubricating oil deteriorates.
Therefore, use a flux which does not contain
chlorine.
3) When adding water to the flux, use water
which does not contain chlorine (e.g. distilled
water or ion-exchange water).
4) Remove the flux after brazing.
Used brazing
filler
Phosphor copper
Silver
Silver
Used
flux
Do not use
Paste flux
V apor flux
M
Flow meter
Stop valve
Nitrogen gas
cylinder
From Nitrogen cylinder
Pipe
Nitrogen
gas
Rubber plug
Fig. 7-5-1 Pre vention of oxidation during brazing
– 57 –
Page 58
7-6. Instructions for Re-use Piping of R22 or R407C
Instruction of Works:
The existing R22 and R407C piping can be
reused for our digital inverter R410A products
installations.
NOTE)
Confirmation of existence of scratch or dent of the
former pipes to be applied and also confirmation of
reliability of the pipe strength are conventionally
referred to the local site.
If the definite conditions can be cleared,
it is possible to update the existing R22 and
R407C pipes to those for R410A models.
7-6-1. Basic conditions need to reuse the
existing pipe
Check and observe three conditions of the refrigerant
piping works.
1. Dry(There is no moisture inside of the pipes.)
2. Clean (There is no dust inside of the pipes.)
3. Tight (There is no refrigerant leak.)
7-6-2. Restricted items to use the existing pipes
In the following cases, the existing pipes cannot be
reused as they are. Clean the existing pipes or exchange them with new pipes.
1. When a scratch or dent is heavy, be sure to use the
new pipes for the works.
2. When the thickness of the existing pipe is thinner
than the specified “Pipe diameter and thickness” be
sure to use the new pipes for the works.
• The operating pressure of R410A is high
(1.6 times of R22 and R407C). If there is a scratch
or dent on the pipe or thinner pipe is used, the
pressure strength is poor and may cause breakage of the pipe at the worst.
* Pipe diameter and thickness (mm)
Pipe outer diameter
R410A
Thickness
• In case that the pipe diameter is Ø12.7 mm or less
and the thickness is less than 0.7 mm, be sure to use
the new pipes for works.
3. The pipes are left as coming out or gas leaks.
(Poor refrigerant)
• There is possibility that rain water or air including
moisture enters in the pipe.
4. Refrigerant recovery is impossible.
(Refrigerant recovery by the pump-down operation
on the existing air conditioner)
R22
(R407C)
Ø6.4 Ø9.5 Ø12.7 Ø15.9 Ø19.0
0.80.80.81.01.0
• There is possibility that a large quantity of poor
oil or moisture remains inside of the pipe.
5. A dryer on the market is attached to the existing
pipes.
• There is possibility that copper green rust gener-
ated.
6. Check the oil when the existing air conditioner was
removed after refrigerant had been recovered.
In this case, if the oil is judged as clearly different
compared with normal oil
• The refrigerator oil is copper rust green :
There is possibility that moisture is mixed with the
oil and rust generates inside of the pipe.
• There is discolored oil, a large quantity of the
remains, or bad smell.
• A large quantity of sparkle remained wear-out
powder is observed in the refrigerator oil.
7. The air conditioner which compressor was exchanged due to a faulty compressor.
When the discolored oil, a large quantity of the
remains, mixture of foreign matter, or a large
quantity of sparkle remained wear-out powder is
observed, the cause of trouble will occur.
8. Installation and removal of the air conditioner are
repeated with temporary installation by lease and
etc.
9. In case that type of the refrigerator oil of the
existing air conditioner is other than the following oil
(Mineral oil), Suniso, Freol-S, MS (Synthetic oil),
alkyl benzene (HAB, Barrel-freeze), ester series,
PVE only of ether series.
• Winding-insulation of the compressor may
become inferior.
NOTE)
The above descriptions are results of confirmation by
our company and they are views on our air conditioners, but they do not guarantee the use of the existing
pipes of the air conditioner that adopted R410A in
other companies.
7-6-3. Branching pipe for simultaneous
operation system
• In the concurrent twin system, when TOSHIBA-
specified branching pipe is used, it can be reused.
Branching pipe model name:
RBC-TWP30E-2, RBC-TWP50E-2
On the existing air conditioner for simultaneous
operation system (twin system), there is a case of
using branch pipe that has insufficient compressive
strength.
In this case please change it to the branch pipe for
R410A.
7-6-4. Curing of pipes
When removing and opening the indoor unit or outdoor
unit for a long time, cure the pipes as follows:
• Otherwise rust may generate when moisture or
foreign matter due to dewing enters in the pipes.
• The rust cannot be removed by cleaning, and a new
piping work is necessary.
Place position
Outdoors
Indoors
Term
1 month or more
Less than 1 month
Every time
Curing manner
Pinching
Pinching or taping
– 58 –
Page 59
7-6-5. Final Installation Checks
Is there no scratch or dent on the existing pipes?
Is it possible to operate the existing air conditioner?
YES
* After the existing air conditioner operated in cooling mode
for approx. 30 minutes or longer*, recover the refrigerant.
* For cooling the pipes and recovering of oil
• Refrigerant recovery: Pump down method
* Remove the existing air conditioner from the piping and
carry out flashing (nitrogen pressure 0.5 Mpa) to remove
the remains inside of the pipe.
Note] In case of twin, also be sure to flash the
branching pipe.
Was not largely discolored oil or
a large quantity of remains discharged?
(When the oil deteriorates, the color of the
oil changes to muddy and black color.)
YES
Existing pipe: NO * Use a new pipes.
NO
Nitrogen gas pressure 0.5 Mpa
(If there is discharge of remains,
it is judged that there is a large quantity of remains.)
NO
Clean the pipes or use the new pipes.
If you are in trouble of
pipe cleaning, please contact us.
n
Connect the indoor/outdoor units to the existing pipe.
• Use a flare nut attached to the main unit for the
indoor/outdoor units.
(Do not use the flare nut of the existing pipe.)
• Re-machine the flare machining size to size for R410A.
n
In case that the gas pipe Ø19 mm is used for the
outdoor unit of SM803 (3 HP) or higher:
(Gas pipe size of our R410A model 3 to 5 HP is Ø15.9 mm)
→ Turn the existing pipe switch on the cycle control
P.C board of the outdoor unit to ON side.
At shipment from factory OFF → ON for existing pipe
(Refer to the table below.) (Be sure to set the contents
in the table below in order to restrict the refrigerating
cycle pressure of the equipment in the pipe standard.)
Piping necessary to change the flare nut/
machining size due to pipe compression.
1) Flare nut width: H
H
Copper pipe
outer dia.
For R410A
For R22
Ø6.4
17
Same as above
Ø9.5
22
Ø12.7
26
2) Flare machining size: A
Copper pipe
outer dia.
A
For R410A
For R22
Becomes large a little for R410A
Do not apply the refrigerator oil to the flare surface.
Ø6.4
9.1
Ø9.5
13.2
Ø12.7
16.6
Ø15.9
29
2724
Ø15.9
19.7
(mm)
Ø19.0
36
Same
as above
(mm)
Ø19.0
24.0
23.319.416.213.09.0
Trial run
– 59 –
Page 60
7-6-6. Recovery method of refrigerant for RAV-SM563AT-E, SM803AT-E
• When recovering refrigerant in case of reinstallation of the indoor or outdoor unit, etc., use the
refrigerant recovery switch on the terminal block
of the outdoor unit.
Work procedure
1. Turn on the power supply.
2. Using the remote controller, set FAN operation to
the indoor unit.
Existing pipe switch SW801
3. Pushing the refr igerant recovery switch on the
terminal block of the outdoor unit starts the
forced cooling operation. (Max. 10 minutes), and
then the refrigerant is recovered by operation of
123LN
the valve.
4. After recovery of the refrigerant, push the
refrigerant recovery switch together with closing
the valve. The operation stops.
5. Turn off the power supply.
DANGER
Only when the existing gas pipe Ø19 mm is used on
RAV-SM803AT-E model, change the setting of
SW801 No. 3.
ON
Refrigerant
ON
recovery switch
2 31
Take care for an electric shock because the
control P.C. board is electrified.
123
7-6-7. Recovery method of refrigerant for RAV-SM1103AT-E, SM1403AT-E
• When recovering refrigerant in case of reinstallation of the indoor or outdoor unit, etc., use the
refrigerant recovery switch SW802 on the cycle
control P.C. board of the outdoor unit.
Refrigerant recovery switch SW802
Work procedure
1. Turn on the power supply.
2. Using the remote controller, set FAN operation to
the indoor unit.
3. Pushing the refr igerant recovery switch SW802
SW802
SW801
on the cycle control P.C. board of the outdoor
unit starts the forced cooling operation.
(Max. 10 minutes), and then the refrigerant is
recovered by operation of the valve.
MCC-1531
4. After recovery of the refrigerant, push the
refrigerant recovery switch SW802 together with
closing the valve. The operation stops.
5. Turn off the power supply.
Existing pipe switch SW801
3
2
1
L
N
– 60 –
Only when the existing gas pipe Ø19 mm is used on
RAV-SM1103AT-E model, change the setting of
SW801 No. 5.
ON
12345
6
ON
12345
6
Page 61
8. CONTROL BLOCK DIAGRAM
8-1. Indoor Control Circuit
*1 Connection Interface is attached to
master unit.
(In case of group control operation)
*2 Weekly timer is not connectable to
the sub remote controller.
Central control remote controller
(Option)
Indoor unit
#1
Connection Interfase
(Option)
U4
U3
P.C. board
(MCC-1440)
TCC-LINK
communication
circuit
Duct type nothing
Louver
motor
Drain
pump
Separately sold parts
for Ceiling type
DC20V
Main (Sub) master remote controller
Display
LCD
CPU
Display
LED
Remote controller
communication
circuit
OptionOption
AB
Function setup
Key switch
DC5V
Power
circuit
CN2
*
CN1
2
LCD
driver
Display
LCD
Weekly timer
Function setup
CPU
DC5V
Power
circuit
#2
AB
Key switch
Secondary
battery
#3
AB
Indoor control P.C. board
(MCC-1402)
Remote controller
communication
DC5V
DC12V
circuit
CPU
Driver
EEPROM
TA sensor
TC sensor
TCJ sensor
Float input
Same as
the left
1
*
Same as
the left
Separately sold parts
Outside output
Warning Ready
Thermo. ON
Cool/Heat Fan
Run
for Ceiling type
1
*
Indoor
fan
motor
DC280V
Power circuit
123
123
Outdoor unit
Optional only for
4-way Air Discharge Cassette
and Under Ceiling type models
CPU
Fan motor
control
circuit
AC
synchronous
signal input circuit
send/receive
Wireless remote controller kit
Receiver P.C. board
Remote controller
communication circuit
Power
circuit
DC5V
Buzzer
Receive circuitDisplay LED
CPU
Serial
circuit
Temporary
operation SW
Function
setup SW
123
Outdoor
unit
123
Outdoor
unit
– 61 –
Page 62
8-2. Control Specifications
No.
1
When power
supply is reset
2
Operation mode
selection
Item
Outline of specifications
1) Distinction of outdoor units
When the power supply is reset, the outdoors are
distinguished, and control is exchanged according to
the distinguished result.
2) Setting of speed of the indoor fan/setting whether to
adjust air direction or not.
(Only 4-way models)
Based on EEPROM data, speed of the indoor fan or
setting whether to adjust air direction or not is
selected.
1) Based on the operation mode selecting command
from the remote controller, the operation mode is
selected.
Remote controller
command
STOP
FAN
COOL
DRY
HEAT
AUTO
Ta
(˚C)
+1.5
Tsc
or Tsh
-1.5
COOL
Outline of control
Air conditioner stops.
Fan operation
Cooling operation
Dry operation
Heating operation
• COOL/HEAT operation mode is
automatically selected by Ta
and Ts for operation.
(COOL ON)
(COOL OFF)
HEAT
Remarks
Air speed/
Air direction adjustment
Ta : Room temperature
Ts : Setup temperature
Tsc : Setup temperature in
cooling operation
Tsh:Setup temperature
+ Room temperature
control temperature
compensation
1) Judge the selection of COOL/HEAT mode as shown
in the figure above.
When 10 minutes passed after thermostat had been
turned off, the heating operation (Thermo OFF) is
exchanged to cooling operation if Tsh exceeds +1.5
or more.
(COOL OFF) and (COOL ON) in the figure indicate
an example.
When 10 minutes passed after thermostat had been
turned off, the cooling operation (Thermo OFF) is
exchanged to heating operation if Tsc exceeds –1.5
or less.
2) For the automatic capacity control after judgment of
COOL/HEAT, refer to item 4.
3) For the temperature correction of room temperature
control in automatic heating operation, refer to item 3.
– 62 –
Page 63
No.
3
Item
Room
temperature
control
Outline of specifications
1) Adjustment range Remote controller setup temperature (°C)
COOL/
DRY
Wired type
Wireless type
: Only for 4-way air discharge cassette type and
*
Under ceiling type
*
18 to 29
18 to 30
Heating
operation
18 to 29
16 to 30
Auto
operation
18 to 29
17 to 27
Remarks
4
Automatic
capacity control
(GA control)
5
Air speed
selection
2) Using the item code 06, the setup temperature in
heating operation can be compensated.
Setup data
Setup temp.
compensation
0246
+0°C+2°C+4°C+6°C
Setting at shipment
Setup data2
1) Based on the difference between Ta and Ts, the
operation frequency is instructed to the outdoor
unit.
1) Operation with (HH), (H), (L), or [AUTO] mode is
performed by the command from the remote controller.
2) When the air speed mode [AUT O] is selected, the air
speed varies by the diff erence between Ta and Ts.
<COOL>
Ta (˚C)
+3.0
+2.5
+2.0
+1.5
+1.0
+0.5
Tsc
-0.5
HH
(HH)
H (HH)
H (HH)
L(H)
L(H)
L(H)
L(L)
A
B
C
D
E
F
G
Shift of suction temperature in heating operation
HH > H > L > LL
• Controlling operation in case when thermo of remote
controller works is same as a case when thermo of
the body works.
• If the air speed has been changed once, it is not
changed for 3 minutes. However when the air volume
is exchanged, the air speed changes.
• When cooling operation has started, the air speed
selects a downward slope, that is, the high position.
• If the temperature is just on the difference boundary,
the air speed does not change.
• Mode in the parentheses indicates one in automatic
cooling operation.
– 63 –
Page 64
No.
5
Item
Air speed
selection
(Continued)
Outline of specifications
<HEAT>
Ta (˚C)
L(L)
(-0.5)
(0)
(+0.5)
–1.0
Tsh
+1.0
L(H)
H(H)
H
E
D
(HH)
(+1.0)
(+1.5)
(+2.0)
+2.0
+3.0
+4.0
HH
(HH)
C
B
A
Value in the parentheses indicates one when thermostat of
the remote controller works.
Value without parentheses indicates one when thermostat
of the body works.
• If the air speed has been changed once, it is not changed
for 1 minute. However when the air speed is exchanged,
the air speed changes.
• When heating operation has started, the air speed selects
a upward slope, that is, the high position.
• If the temperature is just on the difference boundary, the
air speed does not change.
• Mode in the parentheses indicates one in automatic
heating operation.
• In Tc ≥ 60°C, the air speed increases by 1 step.
• In heating operation, the mode changes to [LL] if thermostat is turned off.
• If Ta ≥ 25°C when heating operation has started and when
defrost operation has been cleared, it operates with HIGH
(H) mode or (HH) for 1 minute from when Tc has entered
in E zone of cool air discharge preventive control (Item 6).
• In automatic cooling/heating operation, the revolution
frequency of [HH] is set larger than that in the standard
cooling/heating operation. However the revolution frequency is restricted in the automatic heating operation as
shown in the following figure.
Remarks
Tc: Indoor heat exchanger
sensor temperature
[PRE-HEAT] display
Tc
(˚C)
47
42
F5 F4
F5
6
Cool air
discharge
preventive
control
1) In heating operation, the indoor fan is controlled based
on the detected temperature of Tc sensor or Tcj sensor.
As shown below, the upper limit of the revolution frequency is determined.
Tc
(˚C)
Tcj
32
30
28
26
20
16
HH
H
UL
OFF
L
E zone
D zone
C zone
B zone
A zone
– 64 –
Page 65
No.
7
Item
Freeze
preventive
control
(Low
temperature
release)
Outline of specifications
1) The cooling operation (including Dry operation) is
performed as follows based on the detected temperature of Tc sensor or Tcj sensor.
When [J] zone is detected for 6 minutes (Following
figure), the commanded frequency is decreased from
the real operation frequency. After then the commanded frequency changes every 30 seconds while
operation is performed in [J] zone.
In [K] zone, time counting is interrupted and the
operation is held.
When [I] zone is detected, the timer is cleared and the
operation returns to the normal operation.
If the commanded frequency becomes S0 because the
operation continues in [J] zone, the return temperature
A is raised from 5°C to 12°C until [I] zone is detected
and the indoor fan
operates with [M] mode.
(˚C)
5
I
A
K
Remarks
Tcj :Indoor heat ex-
changer sensor
temperature
8
High-temp
release control
2
J
In heating operation, the freeze-preventive control
works if 4-way valve is not exchanged and the condition is satisfied. (However the temperature for J zone
dashing control is changed from 2°C to –5°C.)
1) The heating operation is performed as follows based on
the detected temperature of Tc sensor or Tcj sensor.
• When [M] zone is detected, the commanded fre-
quency is decreased from the real operation frequency. After then the commanded frequency
changes every 30 seconds while operation is performed in [M] zone.
• In [N] zone, the commanded frequency is held.
• When [L] zone is detected, the commanded fre-
quency is returned to the original value by approx.
6Hz every 60 seconds.
Setup at shipment
Control temp (°C)
AB
56 (54)52 (52)
Tcj
(˚C)Tc
A
B
L
M
N
NOTE :
When the operation has started or when Tc or Tcj became
lower than 30°C after start of the operation, temperature
is controlled between values in parentheses of A and B.
– 65 –
Same when thermostat is
turned off.
Page 66
No.
9
Drain pump control
10
After-heat
elimination
11
Louver control
(For 4-way air
discharge cassette
type only)
Item
Outline of specifications
1) In cooling operation (including Dry operation), the
drain pump is usually operated.
2) If the float switch operates while drain pump
operates, the compressor stops, the drain pump
continues the operation, and a check code is
output.
3) If the float switch operates while drain pump stops,
the compressor stops and the drain pump operates. If the float switch keeps operating for approx.
4 minutes, a check code is output.
When heating operation stops, the indoor fan operates with LOW mode for approx. 30 seconds.
1) Louver position setup
• When the louver position is changed, the
position moves necessarily to downward discharge position once to return to the set position.
• The louver position can be set up in the follow-
ing operation range.
In cooling/dry operation In heating/fan operation
Remarks
Check code [P10]
• In group twin/triple operation, the louver posi-
tions can be set up collectively or individually.
2) Swing setup
• The swinging position can be moved in the
following operation range.
All modes
• In group twin/triple operation, the swinging
positions can be set up collectively or individually.
3) When the unit stops or when a warning is output,
the louver automatically moves downward.
4) While the heating operation is ready, the louver
automatically moves upward.
W arning :
A check code is displayed
on the remote controller,
and the indoor unit stops.
(Excluding [F08] and
[L31])
– 66 –
Page 67
No.
12
Frequency fixed
operation
(Test run)
Item
Outline of specifications
<In case of wired remote controller>
1. When pushing [CHECK] button for 4 seconds or more,
[TEST] is displayed on the display screen and the
mode enters in Test run mode.
2. Push [ON/OFF] button.
3. Using [MODE] button, change the mode from [COOL]
to [HEAT].
• Do not use other mode than [COOL]/[HEAT] mode.
• During test run operation, the temperature cannot be
adjusted.
• An error is detected as usual.
• A frequency fixed operation is performed.
4. After the test r un, push [ON/OFF] button to stop the
operation. (Display in the display part is same as the
procedure in item 1).)
5. Push [CHECK] button to clear the test run mode.
([TEST] display in the display part disappears and the
status returns to the normal stop status.)
<In case of wireless remote controller>
(Option for 4-way air discharge cassette type only)
1. Turn off the power of the set.
Remove the adjuster with sensors from the ceiling
panel.
2. Turn Bit [1: TEST] of sensor P.C. board switch [S003]
from OFF to ON.
Attach the sensor P.C. board cover and mount the
adjuster with sensors to the ceiling panel.
Turn on the power of the set.
3. Push [ON/OFF] button of the wireless remote controller and set the operation mode to [COOL] or [HEAT]
using [MODE] button.
(During test run operation, all the display lamps of
wireless remote controller sensors flash.)
• Do not use other mode than [COOL]/[HEAT] mode.
• An error is detected as usual.
• A frequency fixed operation is performed.
4. After the test r un, push [ON/OFF] button to stop the
operation.
5. Turn off the power of the set.
Turn Bit [1: TEST] of sensor P.C. board switch [S003]
from ON to OFF.
Mount the adjuster with sensors to the ceiling panel.
Remarks
13
Filter sign display
(Except wireless
type)
1) The operation time of the indoor fan is calculated, the
filter reset signal is sent to the remote controller when
the specified time (2500H) has passed, and it is
displayed on LCD.
2) When the filter reset signal has been received from the
remote controller, time of the calculation timer is
cleared. In this case, the measurement time is reset if
the specified time has passed, and display on LCD
disappears.
– 67 –
[FILTER] goes on.
Page 68
No.
14
Central control
mode selection
15
Energy-save
control
(By connected
outdoor unit)
Item
Outline of specifications
1) Setting at the central controller side enables to select
the contents which can be operated on the remote
controller at indoor unit side.
2) RBC-AMT31E
[Last push priority] :
The operation contents can be selected from both
remote controller and central controller of the indoor
unit side, and the operation is performed with the
contents selected at the last.
[Center] :
Start/Stop operation only can be handled on the remote
controller at indoor unit side.
[Operation Prohibited] :
It cannot be operated on the remote controller at indoor
unit side. (Stop status is held.)
1) Selecting [AUTO] mode enables an energy-saving to be
operated.
2) The setup temperature is shifted (corrected) in the
range not to lose the comfort ability according to input
values of various sensors.
3) Data (Input value room temp. Ta, Outside temp. To, Air
volume, Indoor heat exchanger sensor temp. Tc) for 20
minutes are taken the average to calculate correction
value of the setup temperature.
4) The setup temperature is shifted every 20 minutes, and
the shifted range is as follows.
In cooling time : +1.5 to –1.0K
In heating time : –1.5 to +1.0K
Remarks
(No display)
[CENTER] goes on.
[CENTER] goes on.
In a case of wireless type, the
display lamp does not change.
However, contents which can
be operated are same.
The status set in [CENTER]/
[Operation Prohibited] mode is
notified with the receiving sound
“Pi, Pi, Pi, Pi, Pi” (5 times).
16
Louver control
1) Louver
position
2) Air direction
adjustment
(Swing
operation)
The louver angle is displayed setting 0° as “Full close”.
Full close
1) In the initial operation after power-ON, the position is
automatically controlled according to the operating
status (COOL/HEAT).
CoolingHeating
45˚103˚
0˚
2) After then a louver position is stored in the microcomputer every time when position
is operated on the remote controller, and the louver operates at the position stored
in memory in the next operation and after.
* If the operation mode has been changed from COOL to HEAT, from HEAT to
COOL, or the power has turned off, the stored louver position is cleared and the
status returns to one in item 1).
1) When pushing [LOUVER] button during operation, the louver starts swinging.
2) When the louver has arrived at the desired position, push [LOUVER] again.
The louver stops at that position.
– 68 –
Page 69
No.
17
Max. frequency
cut control
Item
Outline of specifications
1) This control is operated by selecting [AUTO] operation
mode.
2) COOL operation mode: the frequency is controlled
according to the following figure if To < 28°C.
Remarks
18
DC motor
Ta(˚C)
Normal control
+4
+3
Max. frequency is restricted
to approximately the rated
cooling frequency
Tsc
3) HEAT operation mode: the frequency is controlled
according to the following figure if To > 15°C.
It cannot be operated on the remote controller at indoor
unit side. (Stop status is held.)
Ta(˚C)
Tsh
–3
–4
Normal control
Max. frequency is restricted
to approximately the rated
heating frequency
1) When the fan operation has started, positioning of the
stator and the rotor are performed.
(Moves slightly with tap sound)
2) The motor operates according to the command from the
indoor controller.
NOTES :
• When the fan rotates while the air conditioner stops due to
entering of outside air, etc, the air conditioner may operated while the fan motor stops.
• When a fan locking is found, the air conditioner stops, and
an error is displayed.
Check code [P12]
– 69 –
Page 70
8-3. Indoor Print Circuit Board
8-3-1. 4-W ay Air Discharge Cassette Type / Concealed Duct Type / Under Ceiling Type
ON during defrost operation of outdoor unit
ON during Real thermo-ON (Comp ON)
ON when operation mode is in cooling system
(COOL, DRY, COOL in AUTO cooling/heating)
ON when operation mode is in heating system
(HEAT, HEAT in AUTO cooling/heating)
ON during indoor fan ON
(Air purifier is used/Interlock cable)
(When continued for 1 minute)
Check code “L30” is output and forced operation stops.
Option error input is controlled. (Protective operation
for device attached to outside is displayed.)
* Setting of option error input is performed from remote
controller. (DN=2A)
Used for operation check of indoor unit.
(Communication with outdoor unit or remote controller
is not performed, but the specified operation such as
indoor fan “H” or drain pump ON is output.)
Display mode enables indoor unit and remote controller
to communicate. (When power is turned on)
2
0V
9-2. Outdoor Controls
9-2-1. Print Circuit Board
P.C. Board Comparison Table for Digital Inverter
1) For PMV with 50 to 500 pulses during operation, respectively.
2) In cooling operation, PMV is controlled with the temperature difference between TS sensor and TC
sensor.
3) In heating operation, PMV is controlled with the temperature difference between TS sensor and TE
sensor.
4) For the temperature difference in items 2) and 3), 1 to 5K is aimed as the target in both cooling and
heating operations.
5) When the cycle excessively rose in both cooling and heating operations, PMV is controlled by TD
sensor.
The aimed value is usually 103°C for SM56, SM80 and 100°C for SM110, SM140 in both cooling and
heating operations.
REQUIREMENT
A sensor trouble may cause a liquid back-flow or abnormal overheat resulting in excessive shortening of the
compressor life. In a case of trouble on the compressor, be sure to check there is no error in the resistance
value an the refrigerating cycle of each sensor after repair and then start the operation.
2. Discharge temperature release control
1) This function controls the operation frequency, that
is, lowers the operation frequency when the
discharge temperature has not lower or the
discharge temperature has rapidly risen during
PMV control. It subdivides the frequency control
up to a unit of 0.6 Hz to stabilize the cycle.
2) When the discharge temperature is detected in an
abnormal stop zone, the unit stops the compressor and restarts after 2 minutes 30 seconds. The
error counter is cleared when it has continued the
operation for 10 minutes.
If the abnormal stop zone has been detected by 4
times without clearing of counter, an error “P03” is
displayed.
* The cause is considered as excessively little
amount of refrigerant, defective PMV, or clogging
of cycle.
[°C]
TD [˚C]
Error stop ("P03" display with 4 times of error counts)
a
Frequency down
b
c
Frequency holding
d
Frequency slow-up
(Up to command)
e
As command is
abcde
SM56, SM80
SM110, SM140
11710710310093
1111061009590
3. Current release control
The output frequency and the output voltage are
controlled by AC current value detected by T02 on the
outdoor P.C. board so that input current of the inverter
does not exceed the specified value.
1) Cooling fan control
The outdoor fan is controlled by TE, TD, and TO sensors and also revolution frequency of the opera-
Q
tion. The outdoor is controlled by every 1 tap of DC fan control (15 taps).
Only during 60 seconds after the operation has started, the fan is fixed with the maximum fan tap
R
which corresponds to the zone in the following table.
After then the fan is controlled by TE sensor temperature.
Considering a case that TE sensor has come out of the holder, the fan is controlled so that revolution
S
frequency of the fan increases regardless of TE if temperature of TD sensor has risen.
ab
SM56, SM80
SM110, SM110
3632
2926
Operation with WE
TE [˚C]
+1 tap/20 seconds
a
rpm hold
b
–1 tap/20 seconds
(The operation frequency differs according to the model type.)
Temp. range
<
29°C
<
TO < 29°C
15
<
TO < 15°C
5
TO
Below 30HzAbove 30 Hz below 45 HzAbove 45 Hz
Min.Max.Min.Max.Min.Max.
W5WAW7WCW9WF
W3W7W5W9W7WB
W2W5W4W7W6W9
TD [˚C]
85
80
75
65
Operation with
maximum tap in
each zone
Usual fan control
<
TO < 5°C
0
TO < 0°C
TO error
W1W3W3W5W4W7
W1W2W2W4W3W5
W1WFW1WFW1WF
– 77 –
Page 78
2) Heating fan control
–2 tap/20 seconds
–1 tap/20 seconds
rpm hold
+1 tap/20 seconds
–2 tap/20 seconds
STOP timer count
24
21
18
15
TE [˚C]
The outdoor fan is controlled by TE sensor, TO sensor and the operation frequency.
Q
(From Min. W1 to Max. are controlled according to the following table.)
During 3 minutes after start-up, the fan is fixed
R
with the maximum fan tap corresponding to
zone in the following table. After then the fan is
controlled by temperature of TE sensor.
If status, TE > 24°C continues for 5 minutes, the
S
operation stops. This status is same to the
usual Thermo-OFF which has no alarm display,
and the fan restarts after 2 minutes and 30
seconds. This intermittent operation is not
abnormal.
When the above status R occurs frequently, it
T
is considered that the filter of suction part of the
indoor unit is stain. Clean the filter and then
restart the operation.
(The operation frequency differs according to the model type. The case of SM110 is shown in the table below.)
Maximum
Temp. range
<
TO
10°C
<
TO < 10°C
5
TO < 5°C
TO error
Below 33 Hz
W7
WA
WF
WF
Above 33 Hz below 51 Hz
W8
WB
WF
WF
Above 51 Hz
W9
WF
WF
WF
5. Coil heating control
1) This control function heats the compressor by turning on the stopped compressor instead of a case
heater. It purposes to prevent slackness of the refrigerant inside of the compressor.
2) As usual, turn on power of the compressor for the specified time before a test run after installation,
otherwise a trouble of the compressor may be caused. As same as a test run, it is recommended to turn
on power of the compressor beforehand when starting operation after power of the compressor has been
interrupted for a long time.
3) A judgment for electricity is performed by TD and TO sensors. If TO sensor is defective, a backup control
is automatically performed by TE sensor. For a case of defective TO sensor, judge it with the outdoor LED
display.
4) Coil heating is controlled by TD and TE sensor.
5) For every model, the power is turned off when TD is 30°C or more.
(In trouble of TE sensor)
TO [˚C]TE [˚C]
20
18
12
10
No power-ON
Continuous ON (L)
Continuous ON (M)
Power-ON condition
TD < 30˚C
18
15
10
No power-ON
Continuous ON (L)
8
Continuous ON (M)
* TD sensor is read in once per 15 minutes* TO sensor is read in once per 15 minutes.
TE [˚C]
0
–1
–6
–7
(Object: SM56, SM80)
No power-ON
Continuous ON (L)
Continuous ON (H)
– 78 –
SM110, SM140
L
M
L
H
20W and equivalent
40W and equivalent
SM56, SM80
10W and equivalent
30W and equivalent
Page 79
6. Defrost control
A z
one
B z
one
C z
one
D z
one
In heating operation, defrost operation is performed when TE sensor temperature satisfies any condition
Q
in A zone to D zone.
The defrost operation is immediately finished if TE sensor temperature has become 12°C or more, or it
R
also is finished when condition of 7°C < TE < 12°C has continued for 1 minute. The defrost operation is
also finished when defrost operation has continued for 10 minutes even if TE sensor temperature has
become 7°C or lower.
After defrost operation has finished, the compressor and the outdoor fan start heating operation after
S
stopped for approx. 50 seconds.
Start of heating operation
01015cbad[min.]
TE [ºC]
–4 (–5)
A z
one
–6 (–10)
–10 (–13)
–25 (–18)
B zone
B z
one
C zone
C z
*
one
A zone
D zone
D z
one
Numerals enclosed with parentheses represent numeral values of SM110 and SM140.
* The minimum TE value between 10 and 15 minutes after heating operation has started is stored in memory as TE0.
>
A zone
B zone
C zone
D zone
a
b
c
d
T
Defrost operation is performed in this zone when TE0-TE
Defrost operation is performed in this zone when TE0-TE
Defrost operation is performed when this zone continued for T seconds.
Defrost operation is performed when this zone continued for T seconds.
SM56, SM80SM110, SM140
3550
2935
2930
9090
2020
3 continued for T seconds.
>
3 continued for T seconds.
– 79 –
Page 80
10. TROUBLESHOOTING
10-1. Summary of Troubleshooting
<W ired remote controller type>
1. Before troubleshooting
1) Required tools/instruments
• + and – screwdrivers, spanners, radio cutting pliers, nippers, push pins for reset switch
• Tester, thermometer, pressure gauge, etc.
2) Confirmation points before check
a) The following operations are normal.
1. Compressor does not operate.
• Is not 3-minutes delay (3 minutes after compressor OFF)?
• Does not thermostat turn off?
• Does not timer operate during fan operation?
• Is not outside high-temperature operation controlled in heating operation?
2. Indoor fan does not rotate.
• Does not cool air discharge preventive control work in heating operation?
3. Outdoor fan does not rotate or air volume changes.
• Does not high-temperature release operation control work in heating operation?
• Does not outside low-temperature operation control work in cooling operation?
• Is not defrost operation performed?
4. ON/OFF operation cannot be performed from remote controller.
• Is not the control operation performed from outside/remote side?
• Is not automatic address being set up?
(When the power is turned on at the first time or when indoor unit address setting is changed, the
operation cannot be performed for maximum approx. 5 minutes after power-ON.)
b) Did you return the cabling to the initial positions?
c) Are connecting cables of indoor unit and remote controller correct?
2. Troubleshooting procedure
When a trouble occurred, check the parts along with the following procedure.
TroubleConfirmation of check code displayCheck defective position and parts.
NOTE :
For cause of a trouble, power conditions or malfunction/erroneous diagnosis of microcomputer due to outer
noise is considered except the items to be checked. If there is any noise source, change the cables of the
remote controller to shield cables.
→→
– 80 –
Page 81
<W ireless remote controller type> (For 4-way air discharge cassette type only models)
1. Before troubleshooting
1) Required tools/instruments
+
and – screwdrivers, spanners, radio cutting pliers, nippers, etc.
•
• Tester, thermometer, pressure gauge, etc.
2) Confirmation points before check
a) The following operations are normal.
1. Compressor does not operate.
• Is not 3-minutes delay (3 minutes after compressor OFF)?
• Does not thermostat turn off?
• Does not timer operate during fan operation?
• Is not outside high-temperature operation controlled in heating operation?
2. Indoor fan does not rotate.
• Does not cool air discharge preventive control work in heating operation?
3) Outdoor fan does not rotate or air volume changes.
• Does not high-temperature release operation control work in heating operation?
• Does not outside low-temperature operation control work in cooling operation?
• Is not defrost operation performed?
4) ON/OFF operation cannot be performed from remote controller.
• Is not forced operation performed?
• Is not the control operation performed from outside/remote side?
• Is not automatic address being set up?
a) Did you return the cabling to the initial positions?
b) Are connecting cables between indoor unit and receiving unit correct?
2. Troubleshooting procedure
(When the power is turned on at the first time or when indoor unit address setting is changed, the operation
cannot be performed for maximum approx. 5 minutes after power-ON.)
When a trouble occurred, check the parts along with the following procedure .
Confirmation of lamp display
Trouble
1) Outline of judgment
The primary judgment to check where a trouble occurred in indoor unit or outdoor unit is performed with
the following method.
Method to judge the erroneous position by flashing indication on the display part of indoor unit
(sensors of the receiving unit)
The indoor unit monitors operating status of the air conditioner, and the blocked contents of self-diagnosis
are displayed restricted to the f ollowing cases if a protective circuit works.
→→
(When 4-way air discharge cassette type
wireless remote controller is connected)
Check defective
position and parts.
– 81 –
Page 82
10-2. Check Code List
– 82 –
Wireless sensor
lamp display
Operation
Timer Ready
¥
ll
ll
¥
¥
¥
¥¥
¥¥
ll
ll
ll
¥
l
l
¥¥¡
¥¥¡
¥¥¡
¥¥
¥¥
¥
l
l
¥
¥
¥
l
l
ll
¥
l
¥
l
¥
l
¥
l
¥
l
Wired remote
controller
Check code
E03
E04
E08
E10
E18
F01
F02
F04
F06
F08
F10
F29
H01
H02
H03
L03
L07
L08
Error mode detected by indoor and outdoor units
Diagnostic function
Cause of operation
No communication from remote controller (including wireless)
and communication adapters
The serial signal is not output from outdoor unit to indoor unit.
• Miscabling of inter-unit cables
• Defective serial sensing circuit on outdoor P.C. board
• Defective serial receiving circuit on indoor P.C. board
Duplicated indoor unit addresses
Communication error between indoor MCU
• Communication error between fan driving MCU and main
MCU
Regular communication error between master and sub indoor
units or between main and sub indoor units
Coming-off, disconnection or short of indoor heat exchanger
sensor (TCJ)
Coming-off, disconnection or short of indoor heat exchanger
sensor (TC)
Coming-off, disconnection or short of outdoor temperature
sensor (TD)
Coming-off, disconnection or short of outdoor temperature
sensor (TE/TS)
Coming-off, disconnection or short of outdoor temperature
sensor (TO)
Coming-off, disconnection or short of indoor heat exchanger
sensor (TA)
Indoor EEPROM error
• EEPROM access error
Breakdown of compressor
• Displayed when error is detected
Compressor does not rotate.
• Over-current protective circuit operates after specified time
passed when compressor had been activated.
Current detection circuit error
• Current value at AC side is high even during compressor-OFF.
• Phase of power supply is missed.
Duplicated indoor master units
There is group line in individual indoor units.
Unsetting of indoor group address
Status of air
conditioner
Stop
(Automatic reset)
S top
(Automatic reset)
Stop
Stop
(Automatic reset)
Stop
(Automatic reset)
Stop
(Automatic reset)
Stop
(Automatic reset)
Stop
Stop
Operation
continues.
Stop
(Automatic reset)
Stop
(Automatic reset)
Stop
Stop
Stop
Stop
Stop
Stop
Condition
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
: Flash, ¡: Go on, l: Go off
¥
Judgment and measures
1. Check cables of remote controller and communication adapters.
• Handy remote controller LCD display OFF (Disconnection)
• Central remote controller [97] check code
1. Outdoor unit does not completely operate.
• Inter-unit cable check, correction of miscabling, case thermo operation
2. In normal operation
P.C. board (Indoor receiving/Outdoor sending) check
1. Check whether there is modification of remote controller connection (Group/
Individual) or not after power has been turned on (finish of group configuration/
address check).
* If group configuration and address are not normal when the power has been turned
on, the mode automatically shifts to address setup mode. (Resetting of address)
1. Check cables of remote controller.
2. Check power cables of indoor unit.
3. Check indoor P.C. board.
1. Check cables of remote controller.
2. Check indoor power cable.
3. Check indoor P.C. board.
1. Check indoor heat exchanger temperature sensor (TCJ).
2. Check indoor P.C. board.
1. Check indoor heat exchanger temperature sensor (TC).
2. Check indoor P.C. board.
1. Check outdoor temperature sensor (TD).
2. Check outdoor CDB P.C. board.
1. Check outdoor temperature sensor (TE/TS).
2. Check outdoor CDB P.C. board.
1. Check outdoor temperature sensor (TO).
2. Check outdoor CDB P.C. board.
1. Check indoor heat exchanger temperature sensor (TA).
1. Trouble of compressor (Compressor lock, etc.) : Replace compressor.
2. Defective cabling of compressor (Phase missing)
3. Phase-missing operation of power supply (3-phase model)
1. Compressor immediately stops even if restarted. : Check IPDU.
2. Phase-missing operation of power supply
Check 3-phase power voltage and cables.
1. Check whether there is modification of remote controller connection (Group/
Individual) or not after power has been turned on (finish of group configuration/
address check).
* If group configuration and address are not normal when the power has been turned
on, the mode automatically shifts to address setup mode. (Resetting of address)
Page 83
: Flash, ¡: Go on, l: Go off
¥
Wireless sensor
lamp display
Operation
¥
l
Timer Ready
l
¥
¥¡¥
¥¡¥
No check code is displayed.
¥
¥
– 83 –
l
l
¥
¥
¥
¥
¥
For an error mode detected in outdoor unit, the fan operates because sub unit of a group operation does not communicate with the outdoor unit.
l
l
¥¥
¥¥
l
l
l
l
l
¥
l
¥
¥
¥
¥
¥
¥
¥
Wired remote
controller
Check code
L09
L29
L30
L31
P03
P04
P10
P12
P19
P22
P26
P29
P31
Cause of operation
Unset indoor capacity
Outdoor unit and other errors
• Communication error between CDB and IPDU
(Coming-off of connector)
• Heat sink temperature error
(Detection of temperature over specified value)
• When multiple errors are detected, the latest error is displayed.
• When LED display is ¡ (Go on), there is the main cause of trouble on the objective part of control at CDB
side and the unit stops.
• When LED display is ¥ (Flash), there is the main cause of trouble on the objective part of control at IPDU
side and the unit stops.
• When case thermostat operates, the communication is interrupted on the serial circuit. If continuing the case
thermostat operation, a serial communication error occurs because serial sending to the indoor unit is
interrupted.
CDB side
IPDU side
No.
1
TE sensor error
2
TD sensor error
3
TS sensor error
4
TO sensor error
5
Discharge temp. error
6
DC outdoor fan error
Communication error
between IPDU
7
(Abnormal stop)
High-pressure release
8
operation
9
EEPROM error
Communication error
between IPDU
10
(No abnormal stop)
IGBT short-circuit
11
protection
12
Detection circuit error
13
Current sensor error
14
Comp. lock error
15
Comp. breakdown
Item
Check code
Type AType B
F0618
F0419
F0618
F081B
P031E
P221A
L291C
P04
——
——
P2614
P2916
H0317
H021D
H011F
21
—
LED display
D800D801D802D803
(Red)(Yellow)(Yellow)(Yellow)
¡
¡¡
ll
l
l
¡¡¡
¡
l
¡¡
ll
¥
l
¥¥
ll
¥
lll
ll
¡
¡
ll
¡¡
l
l
l
ll
¡
l
l
¡¡
¡
¡
¡
lll
¥
ll
ll
l
¥
¥
l
l
: Go on l : Go off ¥ : Flash (5Hz)
¡
<<Check code>>
The check codes are classified into Type A and Type B according to the used remote controller.
Be sure to check the remote controller which you use.
Type A :
Neutral 2-cores type wired remote controller such as RBC-AMT31E, RBC-AS21E2, and wireless
remote controller kit such as TCB-AX21U (W)-E2.
Type B :
Polarized 3-cores type wired remote controller such as RBC-SR1-PE2, RBC-SR2-PE2, and central
control remote controller such as RBC-CR64-PE2.
– 85 –
Page 86
10-4. Troubleshooting Procedure for Each Check Code
10-4-1. Check Code
[E01 error]
Is inter-unit cable of A and B normal?
YES
Is there no disconnection
or contact error of connector on harness
from terminal block of indoor unit?
NO
NO
Is group control operation?
YES
Is power of all indoor units turned on?
YES
Is power supplied to remote controller?
AB terminal: Approx. DC18V
YES
Are two remote controllers
set without master unit?
NO
NO
YES
NO
NO
YES
Correct inter-unit cable of remote controller.
Correct connection of connector.
Check circuit cables.
Check power connection of indoor unit.
(Turn on power again.)
E08 : Duplicated indoor unit numbers
L03 : Two or more master units in a group control
L07 : One or more group addresses of [Individual] in a group control
L08 : Unset indoor g roup address (99)
Correct inter-unit cable of remote controller.
Correct connection of connector.
Check circuit cables.
NO
Check power connection of indoor unit.
(Turn on power again.)
If the above is detected when power has been turned on, the mode automatically enters in automatic address setup mode. (Check code is not displayed.)
Howe ver, if the above is detected during automatic address setup mode, the check code may be displayed.
[L09 error]
Is capacity of indoor unit unset?
YES
NO
Set capacity data of indoor unit.
(Setup item code (DN) = 11)
Check resistance of fan motor position detection circuit.
Is not coil winding between (Yellow lead) and (Pink lead)
1
opened or shorted? ® Resistance: Approx. 5 to 20k
NO
3
*
Check fan motor position detection signal.
• Using a tester, measure the voltage between CN334 and of
Replace indoor fan motor.
4
W
Replace indoor fan motor.
15
indoor P.C. board (MCC-1402) under condition that CN333 and
CN334 are mounted and the power is turned on.
®
Rotate the fan slowly with hands,
and check the pin voltage
swings between 0 to 5V voltage.
• Between and : 5V
45
CN333
– 90 –
CN334
Page 91
[P22 error]
Revised : Mar. 2007
Are connections of CN301 and
CN300 of P.C. board correct?
YES
Does the fan rotate without trouble
when handling the fan with hands under condition
of removing CN301 and CN300 from P.C. board?
YES
The status that the resistance values
between leads below are 50 to 80
for 40W motor (ICF-140-40) and 25 to 55
for 60W motor (ICF-140-60-1) is normal.
Between (Red lead) and (White lead)
Between (White lead) and (Black lead)
Between (Black lead) and (Red lead)
of motor winding of connector (CN301)
5k to 20kΩ resistance values between
12
23
31
YES
The status that there is
(Yellow lead) and (Pink lead)
14
of motor position detection of
connector (CN300) is normal.
YES
Normal fan motor
(Control or CDB P.C. board)
W
W
NO
NO
NO
Defective fan motor
CN301, * CN303
CN300
CN300 : Motor coil winding
CN301 : Motor position detection
*
CN301, CN303 : Motor coil winding
CN300, CN302 : Motor position detection
SM110, SM140, SP56, SP80, SP110, SP140
(Control P.C. board or CDB P.C. board)
NOTE :
However, GND circuit error inside of the motor is rarely detected even if the above check is carried out.
When the circuit does not become normal even if P.C. board has been replaced, replace outdoor fan motor.
Single phase
Objective P.C. board
Fan motor winding
Motor position detection
* For RAV-SM563AT-E, SM803AT-E, check control P.C. board.
Check CDB P.C. board.
Defect ® Replace
• In cooling operation, if high pressure is abnormally raised, [P19 error] / [08 error] may be displayed.
In this case, remove cause of pressure up and then check again referring to the item [P04 error] / [21 error].
[E03 error] is detected when the indoor unit cannot receive a signal sent from the main remote controller (and
central controller).
In this case, check the communication cables of the remote controllers A and B, the central control system X
and Y. As communication is disab led, [E03] is not displayed on the main remote controller and the central
controller. [E01] is displayed on the main remote controller and [97 error] on the central controller, respectively.
If [E03] occurs during an operation, the air conditioner stops.
[F29 error] / [12 error]
[F29 error] or [12 error] indicates detection of trouble which occurred on IC10 non-volatile memory (EEPROM)
on the indoor unit P.C. board during operation of the air conditioner. Replace the service P.C. board.
* If EEPROM has not been inserted when the power was turned on or if EEPROM data never be read/written,
the automatic address mode is repeated. In this time, the central controller displays [97 error].
(Power ON)
(Approx. 3 minutes)
[SET] is displayed on
main remote controller.
(Approx. 1 minute)
[SET] goes off.
(Repetition)
indoor unit P.C. board flashes
with 1Hz for approx. 10 seconds.
LED (D02) on
Reboot
(Reset)
[P31 error] (Sub indoor unit)
When the master unit of a group operation has detected [E03], [L03], [L07], or [L08] error, the sub unit of the
group operation detects [P31 error] and then it stops. There is no display of the check code or alarm history of
the main remote controller.
(In this model, the mode enters in automatic address set mode when the master unit has detected [E03], [L03],
[L07], or [L08] error.)
– 100 –
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