Mitsubishi SRK18CL, SRK18CL-3, SRK18CL-6 Technical Manual

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Page 1

RESIDENTIAL AIR-CONDITIONING

TECHNICAL MANUAL & PARTS LIST

WALL MOUNTED TYPE RESIDENTIAL AIR-CONDITIONER (Split system, air cooled cooling only type)

SRK18CL SRK18CL-3 SRK18CL-6

Manual No.'12•SRK-T-125

Page 2

TECHNICAL MANUAL

Page 3

'12 • SRK-T-125

CONTENTS

1. SPECIFICATIONS ........................................................................................ 3

(2) Outdoor units ....................................................................................... 6

(3) Wireless remote controller

................................................................... 6

............................................................................ 5

(1) Indoor units .......................................................................................... 5

2. EXTERIOR DIMENSIONS

3. ELECTRICAL WIRING ................................................................................. 7

(1) Indoor units .......................................................................................... 7

(2) Outdoor units ....................................................................................... 8

.......................................................... 10

5. RANGE OF USAGE & LIMITATIONS

4. PIPING SYSTEM ......................................................................................... 9

.................................................................................. 12

6. APPLICATION DATA

7. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ............... 21

(6) Timer operation

.................................................................................. 23

....................................................... 22

(1) Operation control function by remote controller

(5) Flap control ............................................................................................. 23

(4) Custom cord switching procedure

......................................................................... 22(3) Auto restart function

(2) Unit ON/OFF button

........................................................................... 22

.................................. 21

(8) Outline of automatic operation ........................................................... 24

(7) Outline of cooling operation ............................................................... 24

(9) Protective control function

................................................................... 25

..................... 27

.................................................................................. 26

(4) Troubleshooting procedure (If the air conditioner runs)

(3) Troubleshooting procedure

(If the air conditioner does not run at all)

........ 26

(1) Cautions

............................................................................................. 26

(2) Items to check before troubleshooting ................................................. 26

(5) Self-diagnosis table ............................................................................. 27

(6) Inspection procedures corresponding to detail of trouble .................... 28

8. MAINTENANCE DATA

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'12 • SRK-T-125

'10 • SRK-T-099

(9) How to make sure of wireless remote controller .................................. 31

(7)

Phenomenon observed after shortcircuit, wire breakage on sensor

......... 29

(8) Checking the indoor electrical equipment

........................................... 30

■How to read the model name

Example: SRK 18 C

Series code

For Indonesia

Cooling only type

Product capacity

Model name SRK : Wall mounted type

SRC : Outdoor unit

L -3

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'12 • SRK-T-125

1. SPECIFICATIONS

Model

Item

SRK18CL (-3)

Indoor unit SRK18CL (-3) Outdoor unit SRC18CL (-3) Cooling capacity (1) W 5000 Power supply 1 Phase, 220/230/240V, 50Hz

Operation data (1)

Power consumption

Cooling kW 1.70

Running current

Cooling

8.0/7.7/7.3 (220/230/240V)

Inrush current 37 COP Cooling 2.94 Noise level

Cooling

Sound level dB(A) Hi : 48 Me : 44 Lo : 42 50

Power level dB 64 65 Exterior dimensions (Height x Width x Depth) mm 309 x 890 x 251 640 x 850 (+65) x 290 Exterior appearance

(Munsell color)

Fine snow

(8.0Y 9.3/0.1) near equivalent

Stucco white

(4.2Y 7.5/1.1) near equivalent

Net weight kg 12 37

Refrigerant equipment

Compressor type & Q'ty — QJ292PBB(Rotary type) x 1 Motor (Starting method) kW — 1.29 (PSC starting) Refrigerant oil 0.45 (SONISO 4GSI or ATMOS NM56) Refrigerant (3) kg R22 0.9 (Pre-Charged up to the piping length of 7m) Heat exchanger Louver ﬁns & inner grooved tubing M ﬁns & inner grooved tubing Refrigerant control Capillary tubes Deice control Microcomputer control

Air handling equipment

Fan type & Q'ty Tangential fan x 1 Propeller fan x 1 Motor W 27 40 Air ﬂow Cooling CMM 12.8 38 Fresh air intake Not possible — Air ﬁlter, Quality / Quantity Polypropylene net (washable) x 2 —

Shock & vibration absorber — Cushion rubber (for compressor)

Operation control

Operation switch Wireless-Remote control — Room temperature control Microcomputer thermostat —

Operation Display

RUN : Green, TIMER : Yellow, HI POWER : Green,

ECONO : Orange

Safety devices

Compressor overheat protection, Overcurrent protection,

Frost protection, Fan motor error protection

Installation data

Refrigerant piping size (O.D) mm Liquid line: φ6.35 (1/4") Gas line: φ15.88 (5/8") connecting method Flare connecting

Attached length of piping m

Liquid line : 0.55 Gas line : 0.49

—

Insulation for piping Necessary (Both sides), independent Refrigerant line (one way) length

Max. 15

Vertical height difference between outdoor unit and indoor unit

Max.10 (Outdoor unit is higher)

Max.10 (Outdoor unit is lower) Drain hose Connectable (VP 16) — Power cable — Recommended breaker size A 20

Connection wiring

Size x Core number 1.5mm2 x 4 cores (Including earth cable) Connecting method Terminal block (Screw ﬁxing type)

Accessories (included)

Mounting kit

Optional parts —

Note (1) The data are measured at the following conditions.

Item

Operation

Indoor air temperature Outdoor air temperature

Standards

DB WB DB WB

Cooling 27˚C 19˚C 35˚C 24˚C ISO-T1, JIS C 9612

(2) This air-conditioner is manufactured and tested in conformity with the ISO. (3) The operation data are applied to the 220/230/240V districts respectively. (4) The refrigerant quantity to be charged includes the refrigerant in 7.5m connecting piping. (Purging is not required even for the short piping.)

The pipe length is 7.5m.

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'12 • SRK-T-125

Model

Item

SRK18CL-6

Indoor unit SRK18CL-6 Outdoor unit SRC18CL-6 Cooling capacity (1) W 5000 Power supply 1 Phase, 220/230/240V, 50Hz

Operation data (1)

Power consumption

Cooling kW 1.72

Running current

Cooling

8.1/7.8/7.4 (220/230/240V)

Inrush current 37 COP Cooling 2.91 Noise level

Cooling

Sound level dB(A) Hi : 48 Me : 44 Lo : 42 50

Power level dB 64 65 Exterior dimensions (Height x Width x Depth) mm 309 x 890 x 251 640 x 850 (+65) x 290 Exterior appearance

(Munsell color)

Fine snow

(8.0Y 9.3/0.1) near equivalent

Stucco white

(4.2Y 7.5/1.1) near equivalent

Net weight kg 12 37

Refrigerant equipment

Air handling equipment

Fan type & Q'ty Tangential fan x 1 Propeller fan x 1 Motor W 27 40 Air ﬂow Cooling CMM 12.8 38 Fresh air intake Not possible — Air ﬁlter, Quality / Quantity Polypropylene net (washable) x 2 —

Shock & vibration absorber — Cushion rubber (for compressor)

Operation control

Operation switch Wireless-Remote control — Room temperature control Microcomputer thermostat —

Operation Display

RUN : Green, TIMER : Yellow, HI POWER : Green,

ECONO : Orange

Safety devices

Compressor overheat protection, Overcurrent protection,

Frost protection, Fan motor error protection

Installation data

Refrigerant piping size (O.D) mm Liquid line: φ6.35 (1/4") Gas line: φ15.88 (5/8") connecting method Flare connecting

Attached length of piping m

Liquid line : 0.55 Gas line : 0.49

—

Insulation for piping Necessary (Both sides), independent Refrigerant line (one way) length

Max. 15

Vertical height difference between outdoor unit and indoor unit

Max.10 (Outdoor unit is higher)

Max.10 (Outdoor unit is lower) Drain hose Connectable (VP 16) — Power cable — Recommended breaker size A 20

Connection wiring

Size x Core number 1.5mm2 x 4 cores (Including earth cable) Connecting method Terminal block (Screw ﬁxing type)

Accessories (included)

Mounting kit

Optional parts —

Note (1) The data are measured at the following conditions.

Item

Operation

Indoor air temperature Outdoor air temperature

Standards

DB WB DB WB

Cooling 27˚C 19˚C 35˚C 24˚C ISO-T1, JIS C 9612

The pipe length is 7.5m.

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'12 • SRK-T-125

Space for installation and service when viewing from the front

Outlet for down piping

（Refer to the above view）

D C

Terminal block

881.9

59.926 20.9

59.9

46.5

61.5

46.5

61.5

890

309

9 61.5

3251

50 120 650 120 100

220 450 220

35 35

48.9222.5

5.7

295.4 7.9

（Service space）

Unit

46.5

（Service space）

Installation plate

491.1

520.8

559.1

61.5

2. EXTERIOR DIMENSIONS

(1) Indoor units

Model SRK18CL(-3) (-6)

Hole on wall for right rear piping

Hole on wall for left rear piping

Gas piping

Outlet for piping（on both side）

Drain hose

Outlet for wiring

Liquid piping

CDB

Symbol

（ø65）

VP16

ø6.35（1/4"）（Flare）

Content

ø15.88（5/8"）（Flare）

（ø65）

Wireless remote controller

Unit:mm

150

17.3

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'12 • SRK-T-125

Drain holes

286.4

290

49.6

43.5

850

203.1

510 136.9

476

Elogated hole (2-12 x16)

314

328

Terminal block

Service valve (Liquid) ø6.35 (1/4'')

Service valve (Gas) ø15.88 (5/8'')

Ground terminal

124

34.6

20 °

42.7

100.3

640

(2) Outdoor unit

Model SRC18CL(-3) (-6)

Unit: mm

(3) Wireless remote controller

Unit: mm

17.3

150

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'12 • SRK-T-125

3. ELECTRICAL WIRING

(1) Indoor units

Model SRK18CL(-3) (-6)

250V

FUSE

3.15A

S/N

VARISTOR

FAN MOTOR

CNU

1 3 4 5 6

TO OUTSIDE

TERMINAL

2/N

UNIT

BLOCK

HEAT

EXCHANGER

BOARD

CIRCUIT

PRINTED

FLAP

CNX2

MOTOR

BLUE

WHITE

RED

WHITE

BLACK

BLUE

YELLOW

BLACK

CNG

CNE

DISPLAY

WIRELESS RECEIVER

BACK-UP SW

HEAT EXCHANGER SENSOR 1

ROOM TEMP. SENSOR

52C-4

52C-3

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'12 • SRK-T-125

(2) Outdoor units

Model SRC18CL(-3) (-6)

RD WH WH

FMo

Y／GN

MARK

RD RED

COLOR

ORANGE

BLACK

BLUE

WH WHITE

INDOOR UNIT

POWER SOURCE 220-240V 50Hz

Y／GN

YELLOW／

GREEN

CFO

2／N

1／L

RCR011G003BC

RUNNING CAPACITOR FOR COMPRESSOR RUNNING CAPACITOR FOR FAN MOTORCFO

FAN MOTOR

COMPRESSOR MOTOR

FMo

PARTS NAME

SYMBOL

MEANING OF MARK

CONNECTOR TERMINAL BLOCKT

RCR011G0 0 3 B C

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'12 • SRK-T-125

4. PIPING SYSTEM

Model SRK18CL(-3) (-6)

Outdoor unitIndoor unit

Room temp. sensor

Heat exchanger

Flare connecting

Heat exchanger sensor

Piping (Liquid) ø

6.35

Piping (Gas)

ø15.88

Check joint

Service valve (Liquid)

Flare connecting

Heat exchanger

Compressor

Capillary tube Capillary tube

Accumulator

Service valve (Gas)

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'12 • SRK-T-125

5. RANGE OF USAGE & LIMITATIONS

Net capacity = Capacity shown on speciﬁcation Correction factors as follows.

(1) Coefﬁcient of cooling capacity in relation to temperatures

All models

Models

Item

Indoor return air temperature (

Upper, lower limits

)

Outdoor air temperature (

Upper, lower limits

)

Refer to the selection chart

Refrigerant line (one way) length

Max. 15m

Max. 10m (Outdoor unit is higher

)

Max. 10m (Outdoor unit is lower

)

Min. 3 minutes

Max. 10 times/h

Min. 85% of rating

Vertical height difference between outdoor unit and indoor unit

Power source voltage

Voltage at starting

Frequency of ON−OFF cycle

ON and OFF interval

Rating 10%

16 18 20 22

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

ISO-T1 Standard ConditionIndoor air W.B. temperature ° C W.B.

Cooling

Applicable range

Coefficient of cooling

capacity in

relation to temperature

Cooling operation

Outdoor air D.B.

temperature

°C D.B.

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'12 • SRK-T-125

(2) Correction of cooling capacity in relation to one way length of refrigerant piping

How to obtain the cooling capacity

Piping length [m]

Cooling

1.0

0.99

0.975

SRK18CL

5000 4875

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'12 • SRK-T-125

6. APPLICATION DATA

Safety precautions

• When installing the unit, be sure to check and satisfy the requirements in the selection of installation location, power supply specifica-

tions, usage limitation (piping length, height differences between indoor and outdoor units, power supply voltage and etc.) and installation spaces.

• Read the “SAFETY PRECAUTIONS” carefully first of all and strictly follow it during the installation work in order to protect yourself.

• The precautionary items mentioned below are distinguished into two levels, WARNING and CAUTION .

WARNING : Wrong installation would cause serious consequences such as injuries or death. CAUTION : Wrong installation might cause serious consequences depending on circumstances.

Both mentions the important items to protect your health and safety so strictly follow them by any means.

• Be sure to confirm no anomaly on the equipment by commissioning after completed installation and explain the operating methods as well as the maintenance methods of this equipment to the user according to the owner’s manual.

• Keep the installation manual together with owner’s manual at a place where any user can read at any time. Moreover if necessary, ask to hand them to a new user.

• For installing qualified personnel, take precautions in respect to themselves by using suitable protective clothing, gloves, etc., and then perform the installation works.

• Please pay attention not to fall down the tools, etc. when installing the unit at the high position.

• If unusual noise can be heard during operation, consult the dealer.

• The meanings of “Marks” used here are shown as follows:

Ne ve r do it un de r an y circumstances.

Always do it according to the instruction.

WARNING

• Insta llation m ust be ca rried out by the qu alified i nstaller.

If you install th e sy stem by yourse lf, it m ay cause serious t rouble such as water leaks, ele ctric sh ocks, fir e and personal i njury, a s a resu lt of a system malfunct ion.

• Insta ll the sy stem in f ull accor dance with the inst ruction m anual.

Incorrec t installa tion may ca use bursts , personal injury, wat er leaks, e lectric shocks a nd fire.

• Be su re to use only for househol d and resi dence.

If this appliance is installed in inferi or en vironment suc h as mach ine shop and etc. , it can cause malfunction.

• Use the ori ginal accessories and the specified components for ins talla-

tion.

If parts o ther than t hose prescribed by u s are used, It may caus e water le aks, electric shocks, fire and p ersonal i njury.

• Insta ll the un it in a l ocation w ith good s upport.

Unsuitab le installa tion locati ons can cause the unit to fall and cause mate rial damage a nd personal injury.

• Venti late the working area well in t he event of refr igerant leakage d ur-

ing inst allation.

If the refrigerant comes into contact with na ked flames, poisonous gas is produced .

• When i nstalling in small ro oms, take p revention measures n ot to excee d

the density limit of refrigerant in the event of leakage, referred by th e formula (accordan ce with I SO5149).

If the densit y of refriger ant exc eeds th e limit , pleas e consu lt the dealer and install the ventilation system, otherw ise lack of oxyge n can occur, which can cause se rious acc ident.

• After c ompleted installatio n, check tha t n o refrigera nt leaks from t he

system.

If refrigerant leaks into the roo m a nd comes int o contact with an oven or other ho t surface , poisonous gas is produced.

• Tight en the fl are nut b y torque wrench wit h specifi ed method .

If the flare nut were tig htened with ex cess tor que, th is may cause burst and refriger ant leaka ge after a long per iod.

• Do not ope n the operatio n valves for liquid line an d gas line u ntil com -

pleted r efrigeran t piping work, air tightness test and evacuati on.

If the c ompresso r is oper ated in state of opening operation valves before complete d connec tion of refrige rant piping wor k, air can be sucked into refrigeran t circuit, whi ch can cause bus t or personal in jury due to anoma lously high pre ssure in the refrigerant.

• Do not put the dr ainage pi pe directl y into dra inage chan nels where poi-

sonous g ases such as sulph ide gas ca n occur.

Poisonou s gases will fl ow into the roo m through dra inage pipe an d seriously affect t he user’s health and safety.

• Ensur e that no air enters in the re frigerant circu it when the unit is in-

stalled and remove d.

If a ir en ters in th e ref rigerant circuit, the pressur e in the refr igerant circuit becomes too high, which can cause bu rst and p ersonal i njury.

• Do not proces s, splice the power cord, or share a socket with other power

plugs.

This ma y cause fire or electric shock d ue to d efecting contact, defecting insulation and over-current e tc.

• The electrical installation must be carr ied out by th e qu alified electri-

cian in accor dance with “t he norm for elect rical work” an d “ national wiring regulation”, and the s ystem must b e conn ected to the dedic ated circuit.

Power supply w ith ins ufficient capacit y and incorrec t functi on done by im proper w ork can c ause electric shock s and fir e.

• Be su re to shu t off the power be fore start ing elect rical wor k.

Failure t o shut off the power can cause electric shocks, u nit failur e or incor rect fun ction of equipment.

• Be sure to use the ca bles conf ormed to saf ety standa rd and cable

ampacity for powe r distrib ution wor k.

Unconfor mable cables can cause elect ric leak, anomalous heat prod uction or fire.

• This appliance mu st be connected to main power supply by means o f a

circuit br eaker or swit ch (fuse:20 A) with a conta ct separati on of at least 3mm.

• Wh en pl uggi ng th is ap pli anc e, a p lug con form ing t o th e nor m

IEC60884 -1 must b e used.

• Use the prescribed cables for e lectrical connectio n, tighten the cab les

securely in terminal block a nd relieve the cab les correctly to p revent overload ing the t erminal b locks.

Loose conn ections or c able mounti ngs can cause anomalous h eat product ion or fire.

• Arran ge the wirin g in the cont rol box so that it canno t be pushed up

further into the box. Inst all the se rvice pan el correc tly.

Incorrec t install ation may result in overheat ing and f ire.

• Be su re to fix up the s ervice pa nels.

Incorrec t fixin g can cause electric shocks or f ire due to i ntrusion of dust or water.

• Be sure to switch off the power supply in the event of instal lation, inspe c-

tion or servicing .

If the powe r s upply is not s hut off, there is a risk of elec tric shocks, unit failure or person al injury due to th e unexpec ted start of fan.

• Stop the compressor before disconnecting refrigerant p ipes in cas e of

pump dow n operati on.

If disconnecting refri gerant pipe s in state of openi ng operatio n valves befor e compress or sto pping, air can be suc ked, which can ca use b urst o r pers onal injury d ue to ano malously high press ure in th e refrige rant circ uit

• Only u se prescrib ed optional parts. The in stallatio n must be carr ied out

by the q ualified installer .

If you ins tall the sy stem by yourself, it ca n cause serious trouble such as water le aks, electric shock s, fire.

• Do not bundle, wind or process for the power cord. Or, do not deform

the powe r plug du e to trea d it.

This may cause fi re or heating.

• Do no t vent R 410A into the atm osphere : R410A is a fluor inated gr een-

house g as, cov ered by the Kyoto Pr otocol w ith Glo bal Warm ing Pote ntial (GW P)=1975.

• Do no t run the unit wit h removed panels or protecti ons.

Touching rotati ng equi pments, hot surfaces or high v oltage parts c an caus e personal injury d ue to entrapment, b urn or el ectric sh ocks.

•

Do not perfor m any change of pro tective devi ce itself or its setup conditi on.

The forced ope ration by short -circuiting protective device of pressur e switch and temp erature controller or the use of n on speci fied comp onent can cause fire or burst.

• Carry out the electrica l work fo r ground l ead with care.

Do not connect the ground l ead to the gas line , water line, light ning cond uctor or t elephone line’s gr ound lead. Incorrec t groundi ng can ca use unit f aults suc h as elect ric shock s due to short-cir cuiting.

Page 15

'12 • SRK-T-125

CAUTION

• Us e the circuit bre aker with sufficient brea king capacity.

If the breaker does not have sufficient breaking capacity, it can cause the unit malfunction and fire.

• Ea rth leakage breaker must be installed.

If the earth leakage breaker is n ot installed, it can caus e electric shocks.

• In stall isolator o r di sconnect swi tch on t he p ower supply wiring i n ac -

cordance with th e local codes and regulat ions.

• B e sure to install indo or unit prope rly according to the instr ucti on

manual in order to run off the dr ainage s moothly.

Improper installation of indoor unit ca n cause dropping water into the room and damaging per sonal property.

• In stall the draina ge p ipe to run off drainage securely accordi ng t o th e

installation manual.

Incorrect instal lation o f the drainage p ipe can cause dr opping w ater int o the room and damaging personal proper ty.

• Be sure to inst all the drainage pipe w ith descending slope of 1/100 or

more, an d not to make tra ps and air-bleedings.

Check if the drainage runs off securely durin g commissioning and ensure the space for inspection and maintena nce.

• Af ter maintenance, all wiring, wiring ties and the like, should be re-

turned to their original state and wiri ng route, and the necessary cle arance from all me tal parts should be secur ed.

• Se cure a space for inst allation, inspec tion an d maintenance s pecified in

the manual.

Insufficient space can result in accident such as personal injury due to falling from the installation place.

• Ta ke care when carrying the unit by hand.

If the unit weights more than 20kg, it must be carried by two o r mor e per-

sons. Do not carry by the plastic straps, always use the carry handle when carrying the unit by hand. Use gloves to minimize the risk of cuts by the aluminum fins.

• Di spose of any packing mate rials correctly.

Any remaining packing materials can cause personal injury as it contains

nails and wood. And to avoid danger of suffocation, be sure to keep the pla stic wrapper away from children an d to dispose after tear i t up.

• Fo r installation work, be careful not to get injured with the heat ex-

changer, piping flare portion or screws e tc.

• Be sure to insulate the refrigerant pipes so as not to condens e the ambi-

ent air moisture on them .

Insufficient insulat ion can cause condensation, which can lead to moisture

damage on the ceiling, floor, fur niture and any other valu ables.

• Wh en p erform the air conditioner operation ( cooling or drying ope ra-

tion) in whi ch ventilator is installed in the room. In this case, us ing the air conditioner in parallel with the ventilator, there is the possibility that drain water may backflow in accordance with the room l apse into the negative pressure status. Th erefore, set up the opening port such a s incorporate the air into the room that ma y appropriate to ventil ation (For example; Open the do or a little ). In addit ion, just a s above, so set up the opening port if the room laps e into negative pressure status due to register of the wind for the high rise apartme nt etc.

• Do not install the unit in the locations lis ted belo w.

• Locations where carbon fiber, metal powder or any powder is floating.

• Locations where any substances that can affect the unit such as sulphide

gas, chloride gas, acid and alkal ine can occur.

• Vehicles and ships.

• Locations where cosmetic or special sprays are often used.

• Locations with direct exposure of oil mist and steam such as ki tchen and

machine plant.

• Locations where any mach ines which generate high frequency har monics are used.

• Locations with salty atmospheres such as coastlines.

• Locations with heavy snow (If installed, be sure to provide base flam e and

snow hood mentioned in the manual ).

• Locations where the unit is exposed to chimney smoke.

• Locations at high altitude (more than 1000m high).

• Locations with ammonic atmospheres.

• Locations where heat radiation from other heat source can af fect the unit.

• Locations without good air circulation.

• Locations with an y obstacles which can prevent inlet and outlet air of the

unit.

• Locations where short circuit of air can occur ( in case of multiple units installation).

• Locations where strong air blows against the air outlet of o utdoor unit.

It can cau se remarkable decre ase in performance, corrosion and damage of components, malfunction and fire.

• Do not install the indoor unit in t he location s listed below (Be sure to

insta ll the indoor unit according to t he installa tion manual for each model because ea ch indoor unit ha s each l imitation).

• Locations with an y obstacles which can prevent inlet and outlet air of the unit.

• Locations where vibration can be amplified due to insufficient strength of structure.

• Locations where the infrared receiver is exposed to the direct sunlight or the strong light beam (in case of the infrared specificati on unit).

• Locations where an equipment affected by high harmonics is placed (TV set or radio receiver is placed w ithin 1m).

• Locations where drainage cannot run off safely.

It can affect performance or func tion and etc.

• Do not install the outdoor unit in the locat ions lis ted below.

• Locations where discharged hot air or operating sound of the outdoor unit

can bother neighborhood.

• Locations where outlet air of the outdoor unit blows directl y to plants.

• Locations where vibration can be amplified and transm itted due to insuffi-

cient st rength of structure.

• Locations where vibra tion and operation sound generated by the outdoor unit can affect seriously (on the wall or at the place nea r bed room).

• Locations where an equipment affected by high harmonics is placed (TV set or radio receiver is placed w ithin 1m).

• Locations where drainage cannot run off safely.

It can affect surrounding environ ment and cause a claim.

• Do no t install the unit ne ar the location wh ere leakage of com bustible

gases ca n occur.

If leaked gases accumulate around the unit, it can cause f ire.

• Do not install the unit where corrosive gas (such as sulfurous acid gas

etc.) or combustible gas (such as thin ner and petro leum gases) can accumulate or collect, or where volat ile combus tible substances are handled.

Corrosive gas can cause corrosion of heat exchanger, breakage of plastic

parts and etc. And combustible ga s can cause fire.

• Do not use the in door uni t at the place where wa ter spla shes may occur

such as in laundries.

Since the indoor unit is not waterproof, it can cause e lectric s hocks and fire.

• Do not install nor use the system close to the equipment that generate s

electromagnetic fields or high frequency harmonic s.

Equipment such as inverters, standby generators, medical high frequenc y

equipments and telecommunication equipments can affect th e system, and cause malfunc tions and breakdowns. The system can also affect medical equipment and telecommunication equipment, and obstruct its function or cause jamming.

• Do not place any va luable which will b e damaged by getting wet under

the indoor unit.

When the relative humidity is higher than 80% or drainage pipe is clogged,

condensation or drainage water can drop and it can cause the damage of valuables.

• Do not install the remote c ontrol at the dir ect sunl ight.

It can cause malfunction or defor mation of the remote cont rol.

• Do not us e the unit for special purposes such as storing foods, cooling

precision instru ments and preserv ation of animals, plants or art.

It can cause the damage of the it ems.

• Do not install the outdoor unit in a location where insects an d small ani-

mals can inhabit .

Insects and small animals can enter the electric pa rts and cause damage or

fire. Instruct the user to keep t he surroundings clean.

• Do not use the base f lame for outdoor uni t wh ich is corroded or dam-

aged due to long periods of opera tion.

Using an old and damage base flame can c ause the unit falling down and

cause pe rsonal injury.

• Do not use any materials other th an a fuse with the cor rect rati ng in the

location where f uses are to be us ed.

Connecting the circuit with copper wi re or othe r metal thread can cause unit

failure and fire .

• Do not touch any buttons wi th wet hands.

It can c ause electric shocks.

• Do not touch a ny refrigerant pipes with y our hands when the system is

in operation.

During operation the refrigerant pipes become extremely hot or extremely

cold depending the operatin g condition, and it can cause burn inju ry or fros t injury.

• Do not touch the suction or aluminum fin on the outd oor unit.

This may cause injury.

• Do not put anything on the outdoor unit and operatin g unit.

This may cause damage the objects or injury due to falling to the object.

Page 16

'12 • SRK-T-125

Necessary tools for the installation work

1 Plus headed driver (Phillips screwdriver)

2 Knife

3 Saw

4 Tape measure

5 Hammer

6 Spanner wrench

7 Torque wrench

8 Hole core drill (65mm in diameter)

9 Wrench key (Hexagon)

[4m/m]

10 Vacuum pump

Vacuum pump adapter (Anti-reverse flow type)

12 Gauge manifold

13 Change hose

14 Flaring tool set

15 Gas leak detector

Gauge for projection adjustment (Used when flare is made by using conventional flare tool)

17 Pipe bender

( )

Standard accessories

(Installation kit) Q'ty

Accessories for indoor unit

①

Installation plate

(Attached to the rear of the indoor unit)

② Wireless remote control 1

③ Remote contorol holder 1

④

Tapping screws

(for installation board 4dia. by 25mm)

⑤

Wood screw

(for remote contorol switch holder 3.5dia. by 16mm)

⑥

Baterry [R03 (AAA, Micro) 1.5V]

Option parts Q'ty

ⓐ 1etalpgnilaeS

ⓑ 1eveelS

ⓓ 1yttuP

ⓔ Drain hose (extention hose) 1

ⓕ

Piping cover

(for insulation of connection piping)

Selection of installation location

Where there is no obstructions to the air flow and where the cooled air can be evenly distributed. A solid place where the unit or the wall will not vibrate. A place where there will be enough space for servicing. (Where space mentioned right can be secured) Where wiring and the piping work will be easy to conduct. The place where receiving part is not exposed to the direct rays of the sun or the strong rays of the street lighting. A place where it can be easily drained. A place separated at least 1m away from the television or the radio. (To prevent interfence to images and sounds.) A place that home appliance and household goods, etc. aren’t below unit. Avoid installing this unit in place where there is much oil mist. Places where there is no electric equipment or household under the installing unit.

INDOOR UNIT

14.0 ~ 8 2.0N · m (1.4 ~ 8 .2kgf · m)

( )

Designed spec ifically

for R22

( )

Designed spec ifically

for R22

( )

Designed spec ifically

for R22

( )

Designed spec ifically

for R22

( )

Designed spec ifically

for R22

Before installation check that the power supply matches the air conditioner.

BEFORE INSTALLATION

(Install at location that meets the following conditions, after getting approval from the customer)

A place where the air conditioner can be received the signal surely during operating the wireless remote control. Places where there is no affected by the TV and radio etc. Do not place where exposed to direct sunlight or near heat devices such as a stove.

Wireless remote control

Installation plate

5 cm mi

nimum

from the

all

10 cm mi

nimum

from the w

all

10 cm minimum from the ceiling

Wireless remote control

Remote control holder

Wood screws

Sleeve

(sold separately)

CAUTION

putty

Indoor side

Outdoor side

Completely seal the hole on the wall with putty. Otherwise, furniture, or other, may be wetted by leaked water or dewing.

Page 17

'12 • SRK-T-125

Installation of indoor unit

Limitations for one way piping length and vertical height difference

Total one way piping length ( ) Max. 15 m

Vertical height difference (h) Max. 10 m

A place where good air circulation can be obtained and where rain, snow or sunshine will not directly strike the unit. A place where discharged hot air or unit’s operating sound will not be a nuisance to the neighborhood. A place where servicing space can be secured. A place where vibration will not be enlarged. *Avoid installing in the following places.

•A place near the bedroom and the like, so that the operation

noise will cause no trouble.

•

A place where there is possibility of flammable gas leakage.

•A place exposed to strong wind.

•In a salt-laden atmosphere or a place where the generation of oil mist, vapor or fume is expected.

Blowing out port and suction port on the back side of the unit can be installed at a distance of 10cm from walls.

In case the barrier is 1.2m or above in height, or is overhead, the sufficient space between the unit and wall shall be secured.

When the unit is installed, the space of the following dimension and above shall be secured.

OUTDOOR UNIT

60 cm MIN

Air intake

10 cm MIN

Air outlet

Air intake

No obstacles (Service space for electrical parts)

Note (1) If the wall is higher than 1.2 m or a ceiling

is present, distances larger than indicated in the above table must be provided.

( )

Look for the inside wall structures (Intersediats support or pillar and finally install the unit after level surface has been checked.)

450

Level position (2 locations)

Mating mark for level surface

Fixing on concrete wall

Use of nut anchor Use of bolt anchor

Nut (M6)

Mounting board

Max.10

Bolt (M6 12)

INSTALLATION SPACE (INDOOR UNIT)

(FRONT VIEW)

Space for service

120

220

650 450 220

100 120

520.8

491.1

559.1

49222.5

100 Space for service 15 Space for service

7.7295.75.6

Indoor unit

Installation board

Drain hose (ø16)

Piping for Gas

Piping for Liquid

Piping hole (ø65)

Relation between setting plate and indoor unit

Piping for Liquid : ø6.35 Piping for Gas : ø12.7

Installation of Installation plate

Standard hole

Nothing is connected to this hole on the back of indoor unit.

Adjustment of the installation plate in the horizontal direction is to be conducted with four screws in a temporary tightened state.

Adjust so the plate will be level by turning the board with the standard hole as the center.

Drill a hole with whole core drill. In case of rear piping draw out, cut off the lower

and the right side portions of the sleeve collar.

When drilling the wall that contains a metal lath, wire lath or metal plate, be sure to use pipe hole sleeve sold separately.

Drilling of holes and fixture of sleeve (Option parts)

Top

Indoor side

Outdoor side

Thicknese of the wall + 1.5cm

Indoor side Outdoor side Installed state

Turn to tighten

Page 18

'12 • SRK-T-125

1. Remove the drain hose. 2. Remove the drain cap. 3. Insert the drain cap. 4. Connect the drain hose.

gnipiPediSthgiRgnipiPediStfeL

Preparation of indoor unit

Pipe

Drain hose

① Mounting of connecting wires

ⓐ Open the air inlet panel. ⓑ Remove the lid. ⓒ Remove the wiring clamp. ⓓ Connect the connecting wire securely to the terminal block.

Use cable for interconnection wiring to avoid loosening of the wires. CENELEC code for cables Required field cables.

H05RNR4G1.5 (Example) or 245IEC57

H Harmonized cable type 05 300/500 volts

R Natural-and/or synth. rubber wire insulation

N Polychloroprene rubber conductors insulation

R Standed core

4or5 Number of conductors

G One conductor of the cables is the earth conductor (yel-

low/green)

1.5 Section of copper wire (mm

)

• Connect the connection wire securely to the terminal block. If

the wire is not affixed completely, contact will be poor, and it is dangerous as the terminal block may heat up and catch fire.

• Take care not to confuse the terminal numbers for indoor

and outdoor connections.

• Earth lead wire shall be longer than the other lead wires for

the electrical safety in case of the slipping out of the cord from the anchorage.

• The earth line of power cord must be properly earthed.

• Affix the connection wire using the wiring clamp.

ⓔ Fix the connecting wire by wiring clamp. ⓕ Attach the lid. ⓖ Close the air inlet panel.

② Shaping the pipe ③ Taping of the exterior

• Hold the bo ttom of th e pipe an d change i ts

directio n before stretch ing it and shaping it .

• Tape only the po rtion that run s through the wall.

Always tap e the cro ssover wires wit h the pipe .

④ Cautions when piping from the left and the rear center of the unit

[ Top View ]

• Remove the screw and

pu ll the drai n ho se, while tw isting.

• Remove it w ith hand

or plier s.

•

Insert the dr ain cap wh ich was rem oved at p rocedure “2” sec urely using a hexagonal w rench et c. Note: Be ca reful tha t If it is not inse rted securely, wat er leaka ge may o ccur.

• Ins ert the drai n ho se se-

curely, P ush t he dra in ho se whi le tw istin g. In stall t he screw. Note: Be ca reful t hat If i t is not Inse rted sec urely, wat er leakage may occur.

Right rear piping

Left rear piping

Left side piping

Right side piping

[Drain hose changing procedures]

Left downward

Right

Rear

Downward

Left rear

Left

Piping is possible in the rea r, left, left rear, left downward , righ t or downward di rection.

Service panel

Terminal block

Clamp

The screw of the service panel is tightened securely.

In case of faulty wiring connection, the indoor unit stops, and then the run lamp turns on and the timer lamp blinks.

CAUTION

Page 19

'12 • SRK-T-125

⑤ Securing the indoor unit to the installation plate

•

How to remove the indoor unit from the installation plate

ⓐ Push up at the marked portion of the indoor unit

base lower latch, and slightly pull it toward you. (both right and left hand sides) (The indoor unit base lower latch can be removed from the installation plate)

ⓑ Push up the indoor unit upward. So the indoor unit

will be removed from the installation plate.

The marked portion of the Indoor unit bese lower latch

Removal and installation of the front panel

Removing

① Remove the air inlet panel. ② Remove the 5 set screws. ③ Remove the 4 latches in the upper section. ④ Move the lower part of the panel forward and puch

upwards to remove.

Installing

① Do remove the air filter. ② Cove the body with the front panel. ③ Install the 4 latches in the upper section. ④ Tighten the 5 set screws. ⑤ Install the air filter. ⑥Install the air inlet panel.

Indoor unit

Latch (2 locations)

Installation plate

Wall

Indoor unit base lower latch

Installation Steps

Pass the pipe through the hole in the wall, and hook the upper part of the indoor unit to the installation plate.

Gently push the lower part to secure the unit.

⑥ Drainage

Arrange the drain hose in a downward angle Avoid the following drain piping.

Go through all installation steps and check if the drainage is all right. Otherwise water leak may occur.

CAUTION

Pour water to the drain pan located under the heat exchanger, and ensure that the water is discharged outdoor. When the extended drain hose is indoor, securely insulate it with a heat insulator available in the market.

Higher than specified The drain hose

tip is in water.

Wavy The drain hose

tip is in the gutter.

Odor from the gutter

The gap to the ground is 5 cm or less.

Since this air conditioner has been designed to collect dew drops on the rear surface to the drain pan, do not attach the power cord above the gutter.

Wall

Gutter

Pipe accommodating section

Set screws

latch

Page 20

'12 • SRK-T-125

Installation of outdoor unit

1 Make sure that the unit is stable in installation. Fix the

unit to stable base.

2 When installing the unit at a higher place or where it

could be toppled by strong winds, secure the unit firmly with foundation bolts, wire, etc.

3 Perfrom wiring, making wire terminal numbers conform

to terminal numbers of indoor unit terminal block.

4 Earth lead wire shall be longer than the other lead wires

for the electrical safety in case of the slipping out of the cord from the anchorage.

Connect using ground screw located near

mark.

(POWER SUPPLY CODE)

CENELEC code for cables requiring fields cables.

H05RNR3G2.5

Connection of refrigerant pipings

Preparation

Connection of refrigerant piping

Keep the openings of the pipes covered with tapes etc. to prevent dust, sand, etc. from entering them.

¡ R emove the flared nuts.

(on both liquid a nd gas sides)

¡ R emove the flared nuts.

(on both liquid a nd gas sides)

¡ In stall the removed flared nu ts to the pipes to

be conne cted, the n flare the pipes.

Dimensio n A Liquid s ide (ø6.35): 9.0 (m m) Gas side (ø9.52): 13.0 ( mm) (ø12.7): 16.2 ( mm) (ø15.88) : 1 9.4 (mm)

Press

Remove

(Do not turn)

Spanner

for fixi ng the pipi ng)

1 Indoor unit side

2 Outdoor unit side

1 Indoor unit side

2 Outdoor unit side

• Connect firmly gas and liquid side pipings by Torque wrench.

Do not apply refrigerating machine oil to the flared surface.

CAUTION

Open/close and detachment/attachment of air inlet panel

1 To open, pull the panel at both ends of lower part and release

latches, then pull up the panel until you feel resistance. (The air inlet panel stops at approx. 60˚ open position.)

2 To close, hold the panel at both ends of lower part to lower

downward and push it slightly until the latch works, then push the center portion slightly.

3 To remove, pull up the panel to the position shown in right

illustration and pull it toward you.

4 To install, insert the air inlet panel arm into the slot on the

front panel from the position shown in right illustration, hold the panel at both ends of lower part, lower it downward slowly, then push it slightly until the latch works and further push the center portion slightly.

Approx. 80

To remov e / To in stall

Torque wrench

• Specified torquing value: Liquid side (ø6.35) : 14~18N·m (1.4~1.8kgf·m) Gas side (ø9.52) : 34~42N·m (3.4~4.2kgf·m) Gas side (ø12.7) : 49~62N·m (4.9~6.2kgf·m) Gas side (ø15.88) : 68~82N·m (6.8~8.2kgf·m)

• Use one more spanner to fix the valve.

• Always use a Torque wrench and back up spanner

to tighten the flare nut.

Page 21

'12 • SRK-T-125

1 Cover the coupling with insulator and then wrap it with tape.

If neglected, moisture formed on the piping will drip out.

2 Finishing and fixing

a Tie up the piping with wrapping tape, and shape it so that it conforms

to which the pipe is attached.

b Fix them with clamps as right figure.

Vinyl ta pe

Position so that t he slit a rea face upward.

Cover the exte rior portion with covering tape and shape the p iping so it will match the con tours of t he route that the pip ing to take. Also fix the wiring and pipings to the w all with clamps.

Insulati on

Refriger ant pipin g Electric al wiring Covering tape Drain ho se

Tapping screw

(three-way valve)

Charge hose (Designed specifically for R22)

Compound pressure gauge

Pressure gauge

Gauge manifold (Designed specifically for R22

)

Handle Hi

Vacuum pump

Vacuum pump adapter (Anti-reverse flow type) (Designed specifically for R22

)

Charge hose (Designed specifically for R22

)

Check joint

-0.1MPa

(-76cmHg)

Handle Lo

Operation valve

(two-way valve)

Operation valve cap

Operation valve cap tightening torque (N•m)

Check joint blind nut tightening torque (N•m)

ø6.35 (1/4")

ø9.52 (3/8")

10~12

ø12.7 (1/2") 25~35 ø15.88 (5/8") 30~40

20~30

Operation valve size

(mm)

Securely tighten the operation valve cap and the check joint blind nut after adjustment.

¡Use an anti-reverse flow type vacuum pump adapter so as to prevent vacuum pump oil from running back into the system.

Oil running back into an air-conditioning system may cause the refrigerant cycle to break down.

Additional refrigerant

Less than 7m : Not required

More than 7m :25g/m

How to relocate or dispose the unit

• In order to protect the environment, be sure to pump down (recovery of refrigerant).

• Pump down is the method of recovering refrigerant from the indoor unit to the outdoor unit when the pipes are removed from the unit.

1 Connect charge hose to check joint. 2 Liquid side : Close the liquid valve with hexagon wrench key.

Gas side : Fully open the gas valve. Carry out cooling operation. (If indoor temperature is low, operate

forced cooling operation.)

3 After low pressure gauge become 0.01MPa, stop cooling operation and

close the gas valve.

¡Forced cooling operation

Turn off the unit for a while. And then turn it on again by pressing continuously the ON/OFF button for 5 seconds or more.

Insulation of the connection portion

z Additional refrigerant charge

Air purge

1 Tighten all flare nuts in the pipings both

indoor and outside wall so as not to cause leak.

2 Connect serv ic e valve, charge hose ,

manifold valve and vacuum pump as is illustrated below.

3 Open manifold valve handle Lo to its

fu ll width, and per for m va cuum or evacuation. Continue the vacuum or evacuation operation for 15 min ut es or mor e and check to see tha t the vacuum gaug e reads – 0.1 MPa (– 76 cmHg).

4 After comple ting vacu um operati on,

fully open service valve (Both gas and li qu id s id es) wi th hex ag on h ea ded wrench.

5 Fully open service valve (Both gas and

li gu id s id es) wi th hex ag on h ea ded wrench.

6 Detach the charge hoses. 7 Check for possible leakage of gas in the

connection parts of both indoor and outdoor.

Unit ON/OFF button

Page 22

'12 • SRK-T-125

Installation of remote control switch

Mounting method of battery

Earthing work

•

• Earth work shall be carried out without fail in order to prevent electric shock and noise generation.

• The connection of the earth cable to the following substances causes dangerous failures, therefore it shall never be done.

City water pipe, Town gas pipe, TV antenna, lightning conductor, telephone line, etc.

Trial run and operation

Conduct trial run after confirming that there is no gas leaks.

When conducting trial run set the remote control thermostat to continuous operation position. However when the power source is cut off or when the unit’s operation switch is turned off or was turned to fan operation position, the unit will not go into operation in order to protect the compressor.

Explain to the customer on the correct usage of the air-conditioner in simple layman’s terms.

Make sure that drain flows properly.

Fixing to pillar or wall

• Conventionally, operate the wireless remote control by holding in your hand.

• Avoid installing it on a clay wall etc.

CAUTION

Do not use new and old batteries together.

Installations test check points

Check the following points again after completion of the installation, and before turning on the power. Conduct a test run again and ensure that the unit operates properly.

At the same time, explain to the customer how to use the unit and how to take care of the unit by following the instruction manual..

After installation

The power supply voltage is correct as the rating.

No gas leaks from the joints of the operation valve.

Operation valve is fully open.

The pipe joints for indoor and outdoor pipes have been insulated.

Test run

Air conditioning operation is normal.

No abnormal noise.

Water drains smoothly.

Protective functions are not working.

The remote control is normal.

Operation of the unit has been explained to the customer.

(Three-minute restart preventive timer) When the air conditioner is restarted or when changing the operation, the unit will not start operating for approximately 3 min utes.

This is to protect the unit and it is not a malfunction.

Open the battery cover and insert batteries. [R03(AAA, Micro) ×2 pieces] (Make sure that the polarity matches correctly with the indication marks )

Cover

ļ Batter y

Ļ Wood s crew

3.5×16

ĸ Wirele ss remote control

Page 23

'12 • SRK-T-125

Remote controller

OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER

(1) Operation control function by remote controller

◆

Operation section

Unit display section

FAN SPEED button

Each time the button i s pushed, t he indicator is switche d over in turn .

•

The above il lustration shows all con trols, but i n practice only the r elevant parts are shown.

OPERATION MODE select button

Each time the button p ushed, the indicator is switche d over in tur n.

ON/OFF (luminous) button

Press for starting o peration, p ress again for stopp ing.

HI POWER/ECONO button

This butto n change s the HIGH POW ER/ ECONOMY m ode.

AIR FLOW (UP/DOWN) button

This button changes th e air flow (u p/down) mode.

SLEEP button

This button changes to SLEEP oper ation.

CLEAN switch

This swit ch changes the CLEAN m ode.

ON TIMER button

This button selects ON TIMER opera tion.

Thi s bu tton c ancel s t he O N tim er, O FF timer, and SL EEP operat ion.

CANCEL button

RESET switch

Switch fo r resetting microcompu ter and setting t ime.

OFF TIMER button

This button selects OF F TIMER oper ation.

TEMPERATURE button

This button sets the r oom tempera ture. (This butto n changes t he present time and

TIMER tim e.)

Unit display section

Page 15

Unit ON/OFF button

ECONO light (orange)

Remote control signal receiver

This butto n can be u sed for tur ning on/off the unit w hen remote con trol is no t available .

IIIuminate s during E CONOMY oper ation.

RUN light (green)

TIMER light (yellow)

IIIuminate s during o peration.

Blinks at CLEAN ope ration .

IIIuminate s during T IMER operat ion.

CLEAN oper ation

3 sec.

1 sec.

HI POWER light (green)

IIIuminate s during H IGH POWER o peration.

OFF

Page 24

'12 • SRK-T-125

'09•SRK-DB-087D

(2)ޓUnit ON/OFF button

(a) Operation

(b) Details of operation

(3)ޓAuto restart function

(a)

(b)

(J170)

(4)ޓCustom cord switching procedure

(a) Modifying the indoor printed circuit board

(b) Modifying the wireless remote controller

Cut

Function

operation mode

Indoor temperature

setting

Fan speed

Flap/Louver

Timer Switch

Cooling

Thermal dry

(J171)

Jumper wire (J170)

Jumper wire (J171)

No display

(CLEAN o n) (CLEAN off)

3 sec.

1 sec.

OFF

Unit ON/OFF button

Page 25

'12 • SRK-T-125

'09•SRK-DB-087D

(5)ޓFlap control



(a) Flap



(b) Swing

(d) When not operating

COOL , DRY, FAN

Remote controller display

Approx. 5° Approx. 15° Approx. 30°

(Swing)

(Flap stopped)

Approx. 45° Approx. 60°



Angle of Flap from Horizontal

In COOL, DRY, FAN operation

Approx.

5°

Approx. 60°

(b) Sleep timer operation

(6)ޓTimer operation

(a) Comfortable timer setting (ON timer)

Page 26

'12 • SRK-T-125

(7) Outline of cooling operation

(a) Operation of major functional components in Cooling mode

(b) Fan speed switching

ON OFF OFF

OFF OFF

ON ON ON

Thermostat ON Thermostat OFF Failure

Cooling

Compressor

Indoor fan motor

Outdoor fan motor

Auto fan control

Speed 8

Speed 6

Speed 4

Model

Fan speed

SRK18CL(-3) (-6)

Auto

MED

(8) Outline of automatic operation

(a) Determination of operation mode

The unit checks the indoor air temperature, determines the operation mode, and then begins in the automatic operation.

(b)

The unit checks the temperature every 30 minutes after the start of operation and, if the result of check is not same as the previ

ous operation mode, changes the operation mode.

(c)

When the unit is started again within one hour after the stop of automatic operation or when the automatic operation is selected

during cooling or dehumidifying operation, the unit is operated in the previous operation mode.

(d)

Setting temperature can be adjusted within the following range. There is the relationship as shown below between the signals of

the wireless remote controller and the setting temperature.

Signals of wireless remote controller (Display)

–6 –5 –4 –3 –2 –1

0 +1 +2 +3 +4 +5 +6

Setting

Cooling

17 18 19 20 21 22 23 24 25 26 27 28 29

temperature

Dehumidifying

18 19 20 21 22 23 24 25 26 27 28 29 30

Room temperature

＜

25.5

℃

25.5

℃≦

Room temperature

Operation mode Dehumidifying Cooling

Page 27

'12 • SRK-T-125

(9) Protective control function

(a) Frost prevention for indoor heat exchanger (During cooling or dehumidifying)

1) Operating conditions

a) Indoor heat exchanger temperature is lower than 2.5ºC.

b) 3 minutes elapsed after the start of operation.

2) Detail of frost prevention operation

Compressor OFF

Indoor fan Protects the fan tap just before frost prevention control.

Outdoor fan Depending on the stop mode

3) Reset condition: Indoor heat exchanger temperature is higher than 15ºC.

(b) Indoor fan motor protection

When the airconditioner is operating and the indoor fan motor is turned ON, if the indoor fan motor has operated at 300 rpm or

under for more than 30 seconds, the unit enters first in the stop mode and then stops the entire system.

TIMER light illuminates simultaneously and the RUN light flashing 6 times at each 8-second.

When the compressor begins operating the thermal operation is not effective for 3 minutes, so operation continues as is in the

operation mode. (After 3 minutes has passed the thermal operation is effective.)

However, stopping the compressor via a stop signal or protection control has priority.

(d) Abnormality of outdoor unit

When the indoor heat exchanger temperature does not fall to 25ºC or below for 40 minutes after 5 minutes have elapsed since the

compressor operation start, the abnormality stop occurs. (The TIMER light flashes 2 times.)

(e) Sensor disconnection (room temperature, indoor heat exchanger)

1) Room temperature sensor

If the temperature detected by the room temperature sensor is – 45ºC or lower continuously for 15 seconds or longer while

operation is stopped, an error indication is displayed. (RUN light: 2 time flash, TIMER light: ON)

2) Indoor heat exchanger temperature sensor

If the temperature detected by the indoor heat exchanger temperature sensor is –28ºC or lower continuously for 15 seconds

or longer while operation is stopped, an error indication is displayed.

(RUN light : 1 time flash, TIMER light : ON)

Page 28

'12 • SRK-T-125

8. MAINTENANCE DATA

(1) Cautions

(a) If you are disassembling and checking an air conditioner, be sure to turn off the power before beginning. When working on

indoor units, let the unit sit for about 1 minute after turning off the power before you begin work. When working on an outdoor

unit, there may be an electrical charge applied to the main circuit (electrolytic condenser), so begin work only after discharg-

ing this electrical charge (to DC 10 V or lower).

(b) When taking out printed circuit boards, be sure to do so without exerting force on the circuit boards or package components.

(2) Items to check before troubleshooting

(a) Have you thoroughly investigated the details of the trouble which the customer is complaining about?

(b) Is the air conditioner running? Is it displaying any self-diagnosis information?

(d) Are the control lines connecting the indoor and outdoor units wired correctly and connected securely?

(e) Is the outdoor unit’s service valve open?

(3) Troubleshooting procedure (If the air conditioner does not run at all)

If the air conditioner does not run at all, diagnose the trouble using the following troubleshooting procedure. If the air condi-

tioner is running but breaks down, proceed to troubleshooting step (4).

Important

When all the following conditions are met, we say that the air conditioner will not run at all.

(a) The RUN light does not light up.

(b) Theapsdonotopen.

(d) The self-diagnosis display does not function.

YES

Troubleshooting procedure (If the air conditioner does not run at all)

Is the cor rec t v olt age connected for the power supply?

With the power off, do

theapsopenmanually,

then close again when the power is turned on?

Is the r e a re c e pt i o n sound emitted from the unit when it is operated by the remote controller?

Replace the indoor PCB and perform an operation check.

Make sure the correct voltage is connected, then perform an operation check.

Is the current fuse on the indoor unit PCB blown?

Proceed to the indoor PCB check.

Proceed to the wireless remote controll er trou bl eshooting procedure.

If the package components are not damaged, replace the fuse and perform an operation check again.

* If the voltage is correct, it will be

within the following voltage range.

198 ~ 264 V

Page 29

'12 • SRK-T-125

(4) Troubleshooting procedure (If the air conditioner runs)

YES

below

ht43,%#%

Indoor unit display panel

TIMER

light

RUN

light

(5) Self-diagnosis table

1 time

flash

2 times

flash

When a heat exchanger sensor 1 wire disconnection is detected while operation is stopped. (If a temperature of –28ºC or lower is detected for 15 seconds, it is judged that the wire is disconnected.) (Not displayed during operation.)

When a room temperature sensor wire disconnection is detected while operation is stopped. (If a temperature of –45ºC or lower is detected for 15 seconds, it is judged that the wire is disconnected.) (Not displayed during operation.)

• Broken heat exchanger sensor

1 wire, poor connector connection

• Indoor PCB is faulty

• Broken room temperature

sensor wire, poor connector connection

• Indoor PCB is faulty

Heat exchanger sensor 1 error

Room temperature sensor error

Description

of trouble

Cause Display (flashing) condition

6 times

flash

When conditions for turning the indoor unit’s fan motor on exist during air conditioner

operation, an indoor unit fan motor speed of 300 rpm

• Defective fan motor, poor connector connection

Indoor fan motor error

or lower is measured for 30 seconds

When there is an emer gency stop caused by trouble in the outdoor unit, or the input

current value is found to be lower than the set value. (The air conditioner stops.)

• Broken compressor wire

• Compressor blockage

• 52C relay in indoor PCB is faulty

2 times

flash

Trouble of outdoor unit

or longer. (The air conditioner stops.)

Page 30

'12 • SRK-T-125

(6) Inspection procedures corresponding to detail of trouble

Sensor error

[Broken sensor wire, connector poor connection]

Is connector connection good?

YES

Replace PCB.

Correct connection.

Replace sensor.

Is sensor resistance value good?

Indoor fan motor error

[Defective fan motor, connector poor connection, defective indoor PCB]

Is connector connection good?

YES

Is the output of the indoor unit PCB normal?

Power supply reset

YES

Correct connector connection

Is DC fan motor resistance value good?

Replace indoor PCB

Replace indoor fan motor

Notes (1) See pages 30 for the DC fan motor and indoor PCB check

procedure.

(2) After making sure the DC fan motor and indoor PCB are

normal, connect the co nnectors and confirm that the fan motor is turning.

(If power is turned on while one or the other is broken down,

it could cause the other to break down also.)

* Disc onne ct the fan mo to r

connec tor, then investigate the DC fan motor and indoor PCB separately.

(Short circuit)

(Broken wire)

◆

Sensor temperature characteristics

(Room temp., indoor heat exchanger temp.,)

Temperature (˚C)

Resistance (k

Ω

)

40 50 60

Is normal state restored?

Malfunction by temporary noise

Replace fan motor (If anomaly persiste after replacing fan motor, replace indoor PCB)

YES

Page 31

'12 • SRK-T-125

'09•SRK-DB-087D

Trouble of outdoor unit

Insufﬁcient refregerant amount, Broken compressor wire Service valve close

．

(7) Phenomenon observed after shortcircuit, wire breakage on sensor

(a) Indoor unit

Sensor

Operation mode

Phenomenon

Shortcircuit Disconnected wire

Room temperature sensor

Cooling

Heat exchanger sensor

Cooling

Page 32

'12 • SRK-T-125

'09•SRK-SM-087D

(8) Checking the indoor electrical equipment

(a) Indoor PCB check procedure

Is there voltage between terminal blocks ① and ② ? (AC 220/230/240V)

Indoor electrical components are normal.

Is there voltage between

terminal blocks ②and ③?

Inspect power source for outdoor unit.

Replace fuse.

Replace indoor PCB.

Is the fuse burnt out? (3.15 A)

YES

(b) Indoor unit fan motor check procedure

1) Indoor PCB output check

① ④ ⑤

2) Fan motor resistance check

⑥ ⑤ ④ ③ ② ①

DC15V

Indoor PCB

DC 308~336V

DC several V (4~6 V)

CNU

(–)

GND

Blue

Yellow

White

Black

Red

Measuring point Resistance when normal

①

−

③

−

④

−

③

−

Measuring point

Resistance when normal

①

−

③

④

−

③

⑤

−

③

⑥

−

③

Force cooling operation

(AC 220/230/240V)

Page 33

'12 • SRK-T-125

'09•SRK-DB-087D

(9) How to make sure of wireless remote controller

The figare below shows the SRK series.

Page 34

'12 • SRK-T-125

Page 35

'12 • SRK-T-125

PARTS LIST

INDOOR UNI

SRK18CL SRK18CL-3 SRK18CL-6

SRC18CL SRC18CL-3 SRC18CL-6

OUTDOOR UNIT

Page 36

'12 • SRK-T-125

CRAE0255

PANEL & FAN ASSY

Page 37

'12 • SRK-T-125

SRK18CL / SRK18CL-3 / SRK18CL-6

END ITEM NO. : RMA002F019 / RMA002F019A / RMA002F019B

Recommendable Purchased Q'ty

10 30 50 100 500 1000

1-7 RMA102A101 PANEL ASSY, FRONT 1 1 1 1 2

1 RKY122A002 PANEL ASSY, FRONT 1 1 1 1 2

2 RKY435A003 GRILLE, AIR IN (TOP) 2 1 1 1 2

3 RMA435A010A PANEL ASSY, AIR IN 1 1 1 2 3

4 RKY437A001 FILTER, AIR 2 2 2 4 8

2PAC210A921YKR5 1 1 1 2

6 RKY133A008G PLATE ASSY, ORNAMENT 1 1 1 1 2

7 RKY011G001H LABEL, WIRING 1 1 1 2 4

8-21 RMA435A009 GRILLE ASSY, AIR OUT 1 1 1 2 3

8 RKY435A002 GRILLE, AIR OUT 1 1 1 2 3

9 RMA436A001 FLAP ASSY (U) 1 1 1 2 2 Upper

10 RMA436A003 FLAP ASSY (L) 1 1 1 2 2 Lower

11-12 RMA436A005 LOUVER ASSY 2 1 1 2 2

21REVUOL110A634YKR11 1 1 2 2

12 RMA129A002 PLATE, CONNECTING 2 1 1 1 2

4RALLOC002C539WKR31

14-18 RMA144A002 LINK ASSY ( R ) 1 1 1 1 2

14 RKY129A005 BRACKET, MOTOR ( R ) 1 1 1 1 2

1KNIL100A441YKR51 1 1 1 2

1)A(KNARC200A441YKR61 1 1 1 2

1)B(KNARC300A441YKR71 1 1 1 2

18 SSA512T096 MOTOR, STEPPING 1 1 1 1 2

19 RMA504A004 HARNESS ASSY 1 1 1 1 2

20 SSA423A102 HOSE, DRAIN 1

1GULP740A623ASS12

22 RKY111A001 BASE ASSY 1 1 1 1 2

23 SSA512T092 MOTOR, DC 1 1 1 1 2

1RELLEPMI050G134ASS42 1 1 2 4

25 SSA913A007 SCREW,TAP 4

26 SSA923C114 BEARING, PLANE 1 1 1 1 2

27 RKY129A037 BRACKET ASSY (U) 1 1 1 1 2

28 RKY129A038 BRACKET ASSY (L) 1 1 1 1 2

29 RKY032A001 PLATE, INSTALLATION 1 1 1 1 2

30 RKY129A034 COVER ASSY (PIPE) 1 1 1 1 2

1)R(DILA100A231YKR13 1 1 2 4

1)L(DIL200A231YKR23 1 1 2 4

NoteNo. Part No. Part Name RE.Q

Page 38

'12 • SRK-T-125

CRAE0256

2021 22

HEAT EXCH. & CONTROL

Page 39

'12 • SRK-T-125

SRK18CL / SRK18CL-3 / SRK18CL-6

END ITEM NO. : RMA002F019 / RMA002F019A / RMA002F019B

Recommendable Purchased Q'ty

10 30 50 100 500 1000

1-6

RMA301A005 HEAT EXCH ASSY (AIR)

1 1 1 2

RMA311A002 HEAT EXCH (AIR)

RMA315D005 HEADER ASSY

RKY129A035 BRACKET ASSY(L)

1 1 1 2

RMA315A005 DISTRIBUTOR ASSY

5-6

RMA321A045 PIPE ASSY

SSA323F012F UNION, SOLDER

sagroF

SSA323F088A UNION (SLD)

diuqilroF

RKY132A003 LID, CONTROL

1 1 1 2

RKY142A002 BOX, CONTROL(L)

9 RKY142A001 BOX, CONTROL(R)

10 RKY129A015 HOLDER, SENSOR

11 SSA551A223A SENSOR ASSY

1 1 2 4

SSA561B702B BLOCK, TERMINAL

1 1 2 2

RMA504A003 HARNESS ASSY

RKY505A001JH PWB ASSY

2 2 4 8

SSA555B058AD VARISTOR

1 1 1 2

SSA564A132 FUSE (CURRENT)

1 1 1 2

RKY503A001C DISPLAY ASSY

1 1 2 4

RKY505A003C PWB ASSY

2 2 4 8

RKJ941F001A SPRING, LEAF

20-22

RMA008A012 PARTS, STANDARD

6-LC81KRSrof

20-22

RMA008A012A PARTS, STANDARD

for SRK18CL, CL3

RKX502A001B CONTROL ASSY, REMOTE

2 3 5 10

RMA012A055 MANUAL, INSTRUCTION

SRK18CL, CL-3, CL-6

RMA012A056 MANUAL, INSTRUCTION

for SRK18CL, CL-3

RKN032A002C HOLDER (REMO-CON)

1 1 1 2

(23)

RMA011F016AC LABEL MODEL NAME

LC81KRSrof

(23)

3-LC81KRSrof

1EMANLEDOMLEBALDA610F110AMR

(23)

6-LC81KRSrof1EMANLEDOMLEBALFA610F110AMR

NoteNo. Part No. Part Name RE.Q

Page 40

'12 • SRK-T-125

CRBE0313

PANEL

& FAN ASSY

Page 41

'12 • SRK-T-125

SRC18CL / SRC18CL-3 / SRC18CL-6

END ITEM NO. : RMC003F028 / RMC003F028A / RMC003F028B

Recommendable Purchased Q'ty

10 30 50 100 500 1000

1 RWC122A004B PANEL ASSY,FRONT 1 1 1 1 2

2 RWC123A005J PANEL ASSY,SIDE(R) 1 1 1 1 2

3 RWC123A008 PANEL,SIDE(L) 1 1 1 1 2

4 RWC124A004F PANEL,ASSY,TOP 1 1 1 1 2

5 RWC132A007 PANEL ASSY,SERVICE 1 1 1 1 2

6 RWC435A002 GRILLE ASSY,AIR OUTLET 1 1 1 2 3

1ELDNAHB630B449ASS7

8 RWC116A041B BRACKET,MOTOR 1

1CA,ROTOMA818B115ASS9 1 1 1 2

10 RWC141A002B PLATE,BAFFLE 1

11 SSA431B233 PROPELLER 1 1 1 2 4

1HT,TUNDA700B419ASS21

13 RWC111A005R BASE ASSY 1 1 1 1 2

14 SSA913A034F SCREW,TAP 22

15 SSA913A034G SCREW,TAP 3

NoteNo. Part No. Part Name RE.Q

Page 42

'12 • SRK-T-125

CRBE0343

(LIQ.)

(GAS)

HEAT EXCH. & CONTROL

Page 43

'12 • SRK-T-125

SRC18CL / SRC18CL-3 / SRC18CL-6

END ITEM NO. : RMC003F028 / RMC003F028A / RMC003F028B

Recommendable Purchased Q'ty

10 30 50 100 500 1000

1-3 RMC301A018 HEAT EXCH ASSY(AIR) 1 1 1 1 2

1 RMC311A005 HEAT EXCH(AIR) 1 1 1 1 2

1EPIP521A123CMR2

1EPIP601A123CMR3

4 RCK116A002 BRACKET(VALVE) 1

5 RWC381A018A VALVE,SERVICE(1/4") 1 1 1 1 2 LIQ.

6 RWC381A017A VALVE,SERVICE(5/8") 1 1 1 1 2 GAS

7-9 RMC304A024 PIPING ASSY (EXPAN) 1 1 1 1 2

1YRALLIPAC910B513CMR8

1YRALLIPAC610B513CMR9

ediS1PMOC,NOITALUSNI010D451CMR01

11 RMC201A013 COMPRESSOR ASSY 1 1 2 3 8

12 RMC941C003 CUSHION,RUBBER 3

13 SSA914C013 NUT,FLANGE 3

14 RMC932C003 GASKET,COVER 1

15 RMC947K003 COVER,TERMINAL 1 1 1 2 4

16 SSA914C016 NUT,FLANGE 1

17 SSA561B723A BLOCK,TERMINAL 1

1NURAPACH871A255ASS81 1 1 2 4 440VAC 35uF

1NURAPACA638A255ASS91 1 1 2 4 500VAC 2.0uF

reppU1NOITALUSNI110D451CMR02

NoteNo. Part No. Part Name RE.Q

Page 44

RESIDENTIAL AIR-CONDITIONING

TECHNICAL MANUAL & PARTS LIST

Because of our policy of continuous improvement, we reserve the right to make changes in all specifications without notice.

Mitsubishi SRK18CL, SRK18CL-3, SRK18CL-6 Technical Manual

Specifications and Main Features

Frequently Asked Questions

User Manual