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

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

TECHNICAL MANUAL

'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

'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

'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.

'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.

'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

'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

'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

'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

'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)

'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.

'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

'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.

+ 30 hidden pages

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

Specifications and Main Features

Frequently Asked Questions

User Manual