LG CRUN, CRNN Service Manual

System

SERVICE MANUAL

System

Heat Pump Air Conditioner

SERVICE MANUAL

LG

MODELS: CRUN/CRNN Series

website http://www.lgservice.com
e-mail http://www.lgeservice.com/techsup.html

CAUTION

• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.

• ONLY FOR AUTHORIZED SERVICE PERSONNEL.

2

Air Conditioner Service Manual

TABLE OF CONTENTS

Model Name Namerclature...........................................................................3

Model Names.................................................................................................4

Safety Precautions .......................................................................................5

Indoor Units.............................................................................................9

Ceiling Mounted Cassette Type (1 way)................................................10

Ceiling Mounted Cassette Type (4 way)................................................20

Ceiling Mounted Duct Type (High static)..............................................36

Ceiling Mounted Duct Type (Low static)...............................................48

Convertible Type.....................................................................................58

Wall Mounted Type..................................................................................77

Art Cool Type (Mirror).............................................................................93

Art Cool Type.........................................................................................111

Art Cool Type (Wide).............................................................................127

Flor Standing Type................................................................................144

Outdoor Units.....................................................................................154

Control Devices and Functions...........................................................182

Trouble Shooting Guide .......................................................................209

Appendix................................................................................................243

Model Name Nomenclature

Service Manual 3

CRN N 607 ASR 0

Serial Number
Combinations of functions

A: Basic Function
Art Cool Type Panel Color
B: Blue, C: Cherry, D: Wood, M: Metal
N: Walnut, R: Mirror, W: White, G: Gold

Chassis Name
Electrical Ratings

1: 1ø, 100V~115V, 60Hz, 2: 1ø, 220V~240V, 60Hz
6: 1ø, 220V~240V, 50Hz, 7: 1ø, 100V~115V, 50Hz

Total Cooling Capacity in Btu/h unit

Ex) 5,000 Btu/h ➞ ‘05’ , 18,000 Btu/h ➞ ‘18’

Combination of Inverter Type and
Cooling Only or Heat Pump or Heat Recovery

N: AC Inverter and H/P, V: AC Inverter and C/O

Indicates that this is
using the R-407C.

System indoor unit

CRU N 8100 T 0

Air Discharge Type

S: Side discharge
T: Top discharge

Serial Number

Electrical Ratings

8: 3ø, 380V~415V, 50Hz, 9: 3ø, 380V~415V, 60Hz
A: 3ø 220V, 50Hz, B: 3ø, 220V, 60Hz
C: 3ø, 440V~460V, 50Hz, D: 3ø, 440V~460V, 60Hz

Total Cooling Capacity in Horse Power(Hp) unit

Ex) 4.5 Hp ➞ ‘45’ , 10 Hp ➞ ‘100’

Combination of Inverter Type and
Cooling Only or Heat Pump or Heat Recovery

N: AC Inverter and H/P, V: AC Inverter and C/O

Indicates that this is System outdoor unit
using the R-407C.

Note: Suffix - Look: Wall Mounted Type

- Panel: Ceiling Mounted Cassette Type

Indoor Unit

Outdoor Unit

4

Model Names

Series

Model name

Power

Supply

Inverter Series

(Heat Pump)

4.5

(44,000)

Capacity, Hp(Btu/h)

10

(95,500)

CRUN
458S0

CRUN

1008T0

3ø, 4W,380V~415V,
50Hz

Category Type

Chassis

Name

Model Name

Capacity, kW(Btu/h)

Wall
Mounted
Type

General

SR
ST

2.1

(7,000)

CRNN

076SRA0

-

2.6

(9,000)

CRNN

096SRA0

-

3.5

(12,000)

CRNN

126SRA0

-

5.3

(18,000)

-

CRNN

186STA0

7.0

(24,000)

-

-

8.2

(28,000)

-

-

10.6

(36,000)

-

-

12.3

(42,000)

-

-

14.1

(48,000)

-

-

Art Cool

Mirror

SU
SP

CRNN

076SU*0

-

CRNN

096SU*0

CRNN

126SU*0

-

-

-

-

-

-

-

-

-

-

-

-

Art

Cool

CRNN

096SP*0

CRNN

126SP*0

SV

-

CRNN

186SV*0

CRNN

126SV*0

-----

Wide

-

Ceiling
Cassette

1 Way

TC

CRNN

076TCA0

CRNN

096TCA0

CRNN

126TCA0

------

TE

-

CRNN

186TEA0

-----

4 Way

-

CRNN

126TEA0

TD

--

CRNN

246TDA0

--

CRNN

286TDA0

CRNN

366TDA0

CRNN

426TDA0

CRNN

486TDA0

Ceiling
& Floor

Convertible

VB

-

CRNN

186VBA0

CRNN

246VBA0

------

Ceiling
Concealed
Duct

High

Static

BH
BG
BE
BN

Low

Static

BJ

-

CRNN

186BHA0

CRNN

246BHA0

--

-

-- -

CRNN

286BGA0

CRNN

366BGA0

----

-

-

CRNN

426BGA0

CRNN

486BEA0

---- ----

CRNN

076BNG0

--- -----

-

CRNN

096BJG0

CRNN

126BJG0

------

CAA

CBA

CCA

CDA

With

Case

CRNN

076CAA0

--------

CRNN

096CBA0

CRNN

126CBA0

CRNN

186CCA0

CRNN

246CDA0

---- --

Floor
Standing

Indoor Unit

Outdoor Unit

Safety Precautions

Service Manual 5

Safety Precautions

To prevent indury to the user or other people and property damage the following instructions must be followed.

■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the
following indications.

■ Meanings of symbols used in this manual are as shown below.

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to properties only.

Carefully read the labels affixed to the main unit.

Be sure not to do.

Be sure to follow the instruction.

This symbol indicates a part which must be grounded.

This symbol indicates that caution should be taken with rotating parts.
(This symbol is displayed on the main unit label.) <Color: Tellow>

This symbol indicates that the main switch must be turned off before service.
(This symbol is displayed on the main unit label.) <Color: Blue>

This symbol alerts you to the risk of electric shock.
(This symbol is displayed on the main unit label.) <Color: Yellow>

This symbol alerts you to the risk of hot surface.
(This symbol is displayed on the main unit label.) <Color: Yellow>

This symbol alerts you to hazards that could cause harmto the air conditioner.

NOTICE

This symbol indicates special notes.

ELV

Pay attention to electric shock.
And at servicing, please shut down the power supply for both of Indoor and Outdoor
Unit.

6 Indoor Unit

Safety Precautions

Use the specified cables for wiring. Make the
connections securely so that the outside force
of the cable is not applied to the terminals.

- Inadequate connection and fastening may gen­erate heat and cause a fire.

Always use accessories specified by LG
Electronics.

- Ask an authorized technician to install the
accessories. Improper installation by the user
may result in water leakage, electric shock, or
fire.

Cautions before installation

Never repair the unit. If the air conditioner
must be repaired, consult the dealer.

- If the unit is repaired improperly, water leakage,
electric shock, or fire may result.

Do not touch the heat exchanger fins.

- Improper handling may result in injury.

If refrigerant gas leaks during service work,
ventilate the room.

- If the refrigerant gas comes into contact with a
flame, poisonous gases will be released.

Have all electric work done by a licensed
electrician according to "Electric Facility
Engineering Standard" and "Interior Wire
Regulations" and the instructions given in
this manual and always use a special circuit.

- If the power source capacity is inadequate or
electric work is performed improperly, electric
shock and fire may result.

Securely install the cover of control box and
the panel.

- If the cover and panel are not installed properly,
dust or water may enter the outdoor unit and fire
or electric shock may result.

When installing and moving the air condition­er to another site, do not charge it with a
refrigerant different from the refrigerant
(R407C) specified on the unit.

- If a different refrigerant or air is mixed with the
original refrigerant, the refrigerant cycle may
malfunction and the unit may be damaged.

If the air conditioner is installed in a small
room, measures must be taken to prevent the
refrigerant concentration from exceeding the
safety limit when the refrigerant leaks.

- Consult the dealer regarding the appropriate
measures to prevent the safety limit from being
exceeded. Should the refrigerant leak and cause
the safety limit to be exceeded, hazards due to
lack of oxygen in the room could result.

When moving and reinstalling the air condi­tioner, consult the dealer or an authorized
technician.

- If the air conditioner is installed improperly, water
leakage, electric shock, or fire may result.

Safety Precautions

Service Manual 7

After completing service work, make sure
that refrigerant gas is not leaking.

- If the refrigerant gas leaks and is exposed to a
fan heater, stove, oven, or other heat source, it
may generate noxious gases.

Do not reconstruct or change the settings of
the protection devices.

- If the pressure switch, thermal switch, or other
protection device is shorted and operated
forcibly, or parts other than those specified by
LG Electronics are used, fire or explosion may
result.

Do not install the unit where combustible gas
may leak.

- If the gas leaks and accumulates around the
unit, an explosion may result.

Do not use the air conditioner where food,
pets, plants, precision instruments, or art­work are kept.

- The quality of the food, etc. may deteriorate.

Do not use the air conditioner in special envi­ronments.

- Oil, steam, sulfuric smoke, etc. can significantly
reduce the performance of the air conditioner or
damage its parts.

Do not install the unit on a structure that may
cause leakage.

- When the room humidity exceeds 80% or when
the drain pipe is clogged, condensation may drip
from the indoor unit. Perform collective drainage
work together with the outdoor unit, as required.

Take measures to prevent children from
touching the unit.

- Injuries such as cuts could occur if a child
touches the surface of the fins on the heat
exchanger.

Cautions for electrical work and movement

Ground the unit.

- Do not connect the ground wire to gas or water

pipes, lightning rods, or telephone ground lines.
Improper grounding may result in electric shock.

Install the power cable so that tension is not
applied to the cable.

- Tension may cause the cable to break and gen­erate heat and cause a fire.

Use power cables of sufficient current carry­ing capacity and rating.

- Cables that are too small may leak, generate
heat, and cause a fire.

Use only a circuit breaker and fuse of the
specified capacity.

- A fuse or circuit breaker of a larger capacity or a
steel or copper wire may result in a general unit
failure or fire.

8 Indoor Unit

Safety Precautions

Do not wash the air conditioner units.

- Washing them may cause an electric shock.

Be careful that the installation base is not
damaged by long use.

- If the damage is left uncorrected, the unit may
fall and cause personal injury or property
damage.

Safely dispose of the packing materials.

- Packing materials, such as nails and other metal or wooden parts, may cause stabs or other injuries.

- Tear apart and throw away plastic packaging bags so that children will not play with them. If children
play with a plastic bag which was not torn apart, they face the risk of suffocation.

Cautions before the test run

Turn on the power at least 12 hours before starting operation.

- Starting operation immediately after turning on the main power switch can result in severe damage to
internal parts. Keep the power switch turned on during the operational season.

Do not touch the switches with wet fingers.

- Touching a switch with wet fingers can cause an electric shock.

Do not touch the refrigerant pipes during and immediately after operation.

- During and immediately after operation, the refrigerant pipes may be hot or cold, depending on the
condition of the refrigerant flowing through the refrigerant piping, compressor, and other refrigerant
cycle parts. Your hands may suffer burns or frost-bite if you touch the refrigerant pipes.

Do not operate the air conditioner with the panels and guards removed.

- Rotating, hot, or high-voltage parts can cause injuries.

Do not turn off the power immediately after stopping operation.

- Always wait at least five minutes before turning off the power. Otherwise, water leakage and trouble
may occur.

Service Manual 9

Indoor Unit

Indoor Units

10 Indoor Unit

CRNN-TC
Ceiling Mounted Cassette Type (1Way)

1. Specifications.............................................................................11

2. Functions ....................................................................................12

3. Operation Details........................................................................13

4. Dimensional Drawings...............................................................15

5. Piping Diagrams.........................................................................16

6. Wiring Diagrams.........................................................................17

7. Exploded View............................................................................18

8. Replacement Parts List..............................................................19

1. Specifications

Service Manual 11

Specifications

Model Unit

W

Cooling Capacity kcal/h

Btu/h

W

Heating Capacity kcal/h

Btu/h

Casing
Dimensions (W*H*D)

mm
inch

Coil

Rows x Columns x FPI
Face Area m

2

Moisture removal l/h.

Type

Fan

Motor Output x Number

W

Air Flow Rate(H/M/L)

cmm

cfm
Drive
Speed Control

Temperature Control
Sound Absorbing Thermal Insulation Material
Safety Device

Liquid Side mm(inch)

Pipe Connections

Gas Side mm(inch)
Drain Pipe(Internal Dia.)

mm
Net Weight kg(lbs)
Noise Level

(Sound Press,1.5m, H/M/L)

dB±3
Power Supply Ø,V,Hz
Power Cable

AWG#:P*mm

2

Refrigerant Control

Panel Color

Decoration Panel

Dimensions (W*H*D) mm

inch

Standard Accessories

CRNN076TCA0 CRNN096TCA0 CRNN126TCA0

2,100 2,600 3,500
1,806 2,235 3,009
7,165 8,871 11,942
2,363 2,925 3,938
2,031 2,515 3,385
8,061 9,980 13,435

Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate

860*390*180 860*390*180 860*390*180

33.8*15.3*7.0 33.8*15.3*7.0 33.8*15.3*7.0
2 x 12 x 18 2 x 12 x 21 2 x 12 x 21

0.184 0.184 0.184

1.0 1.0 1.5

Cross Flow Fan Cross Flow Fan Cross Flow Fan

14 x 1 14 x 1 14 x 1

6/5/4 7/6/5 10/9/8

225/197/168 246/216/195 353/317/283

Direct Direct Direct

Phase Control Phase Control Phase Control

Microprocessor, Thermostat for cooling and heating

Foamed polystyrene Foamed polystyrene Foamed polystyrene

Fuse, Thermal Fuse for Fan Motor Fuse, Thermal Fuse for Fan Motor Fuse, Thermal Fuse for Fan Motor

6.35 (1/4) 6.35 (1/4) 6.35 (1/4)

12.7 (1/2) 12.7 (1/2) 12.7 (1/2)
25 25 25

17(37.5) 17(37.5) 17(37.5)

35/32/29 37/34/31 39/36/35

1,220~240,50 1,220~240,50 1,220~240,50

12:3*2.5 12:3*2.5 12:3*2.5

L.E.V L.E.V L.E.V
White White White

1050*480*30 1050*480*30 1050*480*30

41.3*18.9*1.2 41.3*18.9*1.2 41.3*18.9*1.2

Owner Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp
Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws, Washers, Positioning Jig
for Installation, Insulation for Hanger Bracket, Air Outlet Blocking Pad.

Notes:-

1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB

- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB

- Interconnecting Piping Length 7.5m

- Level Difference of Zero.

Heating: - Indoor Temperature 20°C(68°F) DB / 15°C(59°F) WB

- Outdoor Temperature 7°C(44.6°F) DB / 6°C(42.8°F) WB

- Interconnecting Piping Length 7.5 m

- Level Difference of Zero.

2. Capacities are Net Capacities.

3. Due to our policy of innovation some specifications may be changed without notification.

4. L.E.V. : Linear Expansion Valve

Conversion Formula

kcal/h = kW x 860
Btu/h = kW x 3414
cfm = m

3

/min x 35.3

12 Indoor Unit

Functions

2. Functions

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

Room temperature control

Starting Current Control

Time Delay Safety Control

Indoor Fan Speed Control

Soft Dry Operation Mode

Airflow Direction Control

Deice (defrost) control (Heating)

Auto Restart

Hot-start Control (Heating)

• The indoor fan does not rotate until the evaporator pip­ing temperature will be reached at 25°C.

Compact and light design

• To install a unit is very convenient because of smaller
size than textile.

Low noise

• The most advanced low-noise design.

• The adoption of turbo fan and round type heat exchang-

er give the quietest operation.

Long life filter

• Long life wrinkle(type) and washable and anti-bacteria
filter is adopted.

High head Drain pump

• Built-in drain pump automatically drains water.

• A standard drain-head height of up to 700mm is possible.

High-Ceiling corresponding Function

• According to the height of ceiling, the RPM of indoor fan
motor is selected to increase air reaching distance.

Central Control(Optional)

•

It is operating individually or totally by central control function.

• Room temperature sensor. (Thermistor)

•

Maintains the room temperature in accordance with the Setting temperature

• Indoor fan is delayed for 5 seconds at the starting.

• Restarting is inhibited for approx. 3 minutes.

• Jet, High, Med, Low

• Intermittent operation of fan at low speed.

• The louver can be set at swing up and down automatically.

• Although the air-conditioner is turned off by a power failure, it is restarted auto-

matically previous operation mode after power supply.

• Both the indoor and outdoor fan stops during defrosting.

• Hot start after defrost ends.

3. Operation Details

Service Manual 13

Operation Details

■ Time Delay Safety Control

• 5sec

Vertical louvers are delayed for 5 secs to be opened to prevent the frictional sound between louver and air
flow.

• 30sec The 4-way valve is ceased for 30sec. to prevent abnormal noise when the Heating operation is OFF or
switched to the other operation mode while compress is off.
While compressor is running, it takes 3~5 seconds to switch.

■ Auto Swing Control

• This function is to swing the louver up and down automatically.

■ Air-Filter Checking Control

• 'Filter' sign will appear on the remote controller display and main body display when an air-filter is polluted. Then

clean the air-filter referring to Owners Manual.

■ Soft-Dry Operation

• The indoor fan speed is automatically set to the low, and fan speed control is not available because of already being

set to the best speed for Dry Operation by microcontroller control.

■ Cooling Mode Operation

• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote con-

troller and the operation diagram is as follows.

Intake Air Temperature
SET TEMPERATURE +0.5°C

(COMP. ON)
SET TEMPERATURE

SET TEMPERATURE -0.5°C
(COMP. OFF)

Selected Selected Selected

fan speed fan speed fan speed

COMPRESSOR ON OFF ON OFF ON

INDOOR FAN Low Low

More than
3 minutes

More than
3 minutes

(1) The function of main control

14 Indoor Unit

Operation Details

Intake Air Temperature.
Setting Temperature .+3°C

(Compressor OFF)

Setting Temperature
(Compressor ON)

INDOOR FAN

COMPRESSOR ON OFF ON OFF

A point; While the indoor Heat-Exchanger temperature is higher than 40°C fan operates at low speed,

when it becomes lower than 40˚C fan stops.

B point; When the indoor Heat-Exchanger temperature is higher than 42°C, fan operates at selected fan

speed, when it becomes lower than 39°C, the fan operates at low speed.

■ Heating Mode Operation

The unit will operate according to the setting by the remote controller and the operation diagram is shown as follows.

(Hot Start)

Low

OFF

Selected

Fan Speed

minimum 3min

Selecting fan

speed

LowLowLow OFF OFF

minimum

10sec.

1min

A

A

minimum

1min.

minimum

10sec.

B

■ Hot-Start Control

• The indoor fan sdoes not rotate until the evaporator piping temperature reaches to 25°C.

• If the evaporator piping temperature drops below 22°C, indoor fan stops again.

• The operation diagram is as follows.

PIPING
TEMPERATURE

1min

COMPRESSOR

INDOOR FAN

ON

OFF LOW

Selected

fan speed

22°C

25°C

4. Dimensional Drawings

Service Manual 15

Dimensional Drawings

846

860

328.430.8

390

893.4

931.6

16.7

50

42.7

7

155

97.7

37

116.3

141.8
180

164

194.4

91.6

180

430

130

Ø80

Ø55

180

91.6

(Unit: mm)

Unit:cm

Ceiling

Ceiling Board

Ceiling Board

20 or more

Above 250

330 or less

100

or more

50 or
more

50 or
more

30 or less

Floor

694.5

1050

480

16 Indoor Unit

Piping Diarams

5. Piping Diagrams

: Thermistor

Heat Exchanger

C.F.F.

lndoor unit

LEV

Filter

Filter

:Heating

:Cooling

Refrigerant pipe connection port diameter

Model
CRNN076TCA0
CRNN096TCA0
CRNN126TCA0

Gas

12.7(1/2)

Liquid

6.35(1/4)

[unit: mm(inch)]

6. Wiring Diagrams

Service Manual 17

Wiring Diagrams

CN-POWER

CONNECTOR
NUMBER

CN-MOTOR2
CN-D/PUMP
CN-COMM
CN-DISP1
CN-LEV
CN-STEP/M1
CN-FLOAT
CN-PIPE
CN-PIPE/O
CN-ROOM
CN-REMO

CN-POWER
CN-MOTOR2

CN-COMM
CN-DISP1
CN-LEV
CN-STEP/M1

CN-PIPE
CN-PIPE/O
CN-ROOM
CN-REMO

AC POWER SUPPLY
AC FAN MOTOR OUTPUT
DRAIN PUMP OUTPUT
COMMUNICATION
DISPLAY
LEV OUTPUT
STEP MOTOR
FLOAT SWITCH INPUT
PIPE SENSOR
DISCHARGE PIPE SENSOR
ROOM SENSOR
REMOTE CONTROLLER

WHITE
YELLOW
WHITE
WHITE
WHITE
WHITE
WHITE
BLUE
WHITE
RED
BLUE
WHITE

AC POWER LINE INPUT FOR INDOOR CONTROLLER
MOTOR OUTPUT OF PHASE CONTROL
AC OUTPUT FOR DRAIN PUMP
COMMUNICATION BETWEEN INDOOR AND OUTDOOR
DISPLAY OF INDOOR STATUS
LEV CONTROL OUTPUT
STEP MOTOR OUTPUT
FLOAT SWITCH SENSING
PIPE THERMISTOR
DISCHARGE PIPE THERMISTOR
ROOM THERMISTOR
REMOTE CONTROL LINE

SPEC COLOR DESCRIPTION

CN-AIRC

AIR CLEAN WHITE AIR CLEAN SIGNAL

(Transmission)

2(N)1(L) 3 4

18 Indoor Unit

Exploded View

7. Exploded View

330870

158580

266012

359011

267110

352150-1

352150-2

137211

346810

130911

135802

268712

146811

435310

152312

354210

W0CZZ

268714

249951

352115

352116

Basic

263230-2

263230-1

263230-3

8. Replacement Parts List

Service Manual 19

Replacement Parts List

PART No.

CRNN076TCA0 CRNN096TCA0 CRNN126TCA0

130911 CABINET ASSEMBLY,INDOOR 3091A10024A R
146811 MOTOR ASSEMBLY,STEP 4681AR2727G R
152312 FILTER ASSEMBLY,AIR CLEANER 5231A10003A R
158580 PUMP ASSEMBLY,WATER 5859A10001A R
137211

PANEL ASSEMBLY,FRONT(INDOOR)

3721A10023Y R

249951

CONTROL BOX ASSEMBLY,INDOOR

4995A10024Q 4995A10024R 4995A10024X R
263230-1 THERMISTOR ASSEMBLY(ROOM) 6323AQ3214P R
263230-2 THERMISTOR ASSEMBLY(PIPE-IN) 6323AQ3226E R
263230-3

THERMISTOR ASSEMBLY(PIPE-OUT)

6323AQ3226V R
266012 SWITCH ASSEMBLY,FLOAT 6601A20001E R
267110

REMOTE CONTROLLER ASSEMBLY

6711A10002A R
268712 PWB(PCB) ASSEMBLY,DISPLAY 6871A20096B R
268714 PWB(PCB) ASSEMBLY,MAIN 6871A10089A 6871A10089B 6871A10089C R
330870 DRAIN PAN ASSEMBLY 3087A10005A R
346810 MOTOR ASSEMBLY,AC 4681A20003V R
352115 TUBE ASSEMBLY,EVAPORATOR IN 5211A10303A R
352116

TUBE ASSEMBLY,EVAPORATOR OUT

5211A20230D R
354210 EVAPORATOR ASSEMBLY,FIRST 5421A10011B 5421A10011A 5421A10011A R
359011 FAN ASSY,CROSS FLOW 5901AR2441A R
435310 GRILLE ASSEMBLY,INLET 3531A10062D R
W0CZZ CAPACITOR,DRAWING 3H00671E R

352150-1 DRAIN TUBE ASSEMBLY 5251AP2984A R
352150-2 DRAIN ASSEMBLY,TUBE 5251A20001A R

LOCATION No.

DESCRIPTION

REMARK

20 Indoor Unit

1. Specifications.............................................................................21

2. Functions ....................................................................................23

3. Operation Details........................................................................24

4. Dimensional Drawings...............................................................26

5. Piping Diagrams.........................................................................28

6. Wiring Diagrams.........................................................................29

7. Exploded View............................................................................30

8. Replacement Parts List..............................................................34

CRNN-TE / CRNN-TD
Ceiling Mounted Cassette Type (4Way)

Service Manual 21

Specifications

1. Specifications

Indoor Unit

Cassette-4way

Model Unit

W

Cooling Capacity kcal/h

Btu/h

Kw

Heating Capacity kcal/h

Btu/h

Casing
Dimensions (W*H*D)

mm
inch

Coil

Rows x Columns x FPI
Face Area m

2

Moisture removal l/h.

Type

Fan

Motor Output x Number

W

Air Flow Rate(H/M/L) cmm

cfm
Drive
Speed Control

Temperature Control
Sound Absorbing Thermal Insulation Material
Safety Device

Liquid Side mm(inch)

Pipe Connections

Gas Side mm(inch)
Drain Pipe(Internal Dia.)

mm

Net Weight kg(lbs)
Noise Level

(Sound Press,1.5m, H/M/L)

dB±3
Power Supply Ø,V,Hz
Power Cable

AWG#:P*mm

2

Refrigerant Control

Panel Color

Decoration Panel

Dimensions (W*H*D) mm

inch

Standard Accessories

CRNN126TEA0 CRNN186TEA0 CRNN246TDA0

3,500 5,300 7,000
3,009 4,557 6,019

11,942 18,084 23,885

3,938 5,963 7,875
3,385 5,127 6,771

13,435 20,345 26,870

Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate

570*570*269 570*570*269 840*840*288

22.4*22.4*10.5 22.4*22.4*10.5 33.0*33.0*11.3
2*11*19 2*11*21 2*12*21

0.274 0.274 2*0.22

1.0 1.9 4.02

Turbo Fan Turbo Fan Turbo Fan

20 22.4 52.5

11 / 10 / 9 13 / 12 / 10 19 / 17 / 15

353/317/283 459/423/353 670/600/530

Direct Direct Direct

Phase control Phase control Phase control

Microprocessor, Thermostat for cooling and heating

Foamed polystyrene Foamed polystyrene Foamed polystyrene

Fuse, Thermal Fuse for Fan Motor Fuse, Thermal Fuse for Fan Motor Fuse, Thermal Fuse for Fan Motor

6.35 (1/4) 9.52 (3/8) 9.52 (3/8)

12.7 (1/2) 15.88 (5/8) 15.88 (5/8)
25 25 25

19(41.9) 19(41.9) 32(70.5)

38 / 35 / 32 41 / 39 / 37 36 / 34 / 32

1,220~240,50 1,220~240,50 1,220~240,50

12:3*2.5 12:3*2.5 12:3*2.5

L.E.V L.E.V L.E.V

White White White

670*670*30 670*670*30 950*950*30

26.4*26.4*1.2 26.4*26.4*1.2 37.4*37.4*1.2

Owner Manual, Installation Manual, Paper Pattern for Installation, Drain
Hose, Clamp Metal, Washer fixing Plate, Sealing Pads, Clamps, Screws,
Washer for Hanging Bracket, Insulation for Fitting

Notes:-

1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB

- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB

- Interconnecting Piping Length 7.5m

- Level Difference of Zero.

Heating: - Indoor Temperature 20°C(68°F) DB / 15°C(59°F) WB

- Outdoor Temperature 7°C(44.6°F) DB / 6°C(42.8°F) WB

- Interconnecting Piping Length 7.5 m

- Level Difference of Zero.

2. Capacities are Net Capacities.

3. Due to our policy of innovation some specifications may be changed without notification.

4. L.E.V. : Linear Expansion Valve

Conversion Formula

kcal/h = kW x 860
Btu/h = kW x 3414
cfm = m

3

/min x 35.3

22 Indoor Unit

Specifications

Model Unit

W

Cooling Capacity kcal/h

Btu/h

W

Heating Capacity kcal/h

Btu/h

Casing
Dimensions (W*H*D)

mm
inch

Coil

Rows x Columns x FPI
Face Area m

2

Moisture removal l/h.

Type

Fan

Motor Output x Number

W

Air Flow Rate(H/M/L) cmm

cfm
Drive
Speed control

Temperature Control
Sound Absorbing Thermal Insulation Material
Safety Device

Liquid Side mm(inch)

Pipe Connections

Gas Side mm(inch)
Drain Pipe(Internal Dia.)

mm
Net Weight kg(lbs)
Noise Level

(Sound Press,1.5m, H/M/L)

dBA±3
Power Supply Ø,V,Hz
Power Cable

AWG#:P*mm

2

Refrigerant Control

Panel Color

Decoration Panel

Dimensions (W*H*D) mm

inch

Standard Accessories

Owner Manual, Installation Manual, Paper Pattern for Installation, Drain Hose,
Clamp Metal, Washer fixing Plate, Sealing Pads, Clamps, Screws, Washer for
Hanging Bracket, Insulation for Fitting

CRNN286TDA0 CRNN366TDA0 CRNN426TDA0 CRNN486TDA0

8,200 10,600 12,300 14,100
7,052 9,116 10,578 12,126

27,995 36,168 41,992 48,137

9,225 11,925 13,838 15,863
7,934 10,253 11,040 13,156

31,494 40,689 43,829 54,156

Galvanized Steel Plate

840*840*288 840*840*288 840*840*288 840*840*288

33.0*33.0*11.3 33.0*33.0*11.3 33.0*33.0*11.3 33.0*33.0*11.3
2*11*21 2*11*21 2*11*21 2*11*21

2*0.26 2*0.26 2*0.26 2*0.26

4.2 5.0 5.2 5.5

Turbo Fan Turbo Fan Turbo Fan Turbo Fan

52.5 52.5 52.5 52.5

21 / 19 / 17 25 / 23 / 21 27 / 25 / 22 30 / 28 / 26

741/670/600 883/812/742 953/883/777 1,059/988/918

Direct

Phase control

Microprocessor, Thermostat for cooling and heating

Foamed polystyrene

Fuse, Thermal Fuse for Fan Motor

9.52 (3/8) 9.52 (3/8) 9.52 (3/8) 9.52 (3/8)

15.88 (5/8) 19.05(3/4) 19.05(3/4) 19.05(3/4)
25 25 25 25

32(70.5) 32(70.5) 32(70.5) 32(70.5)

42/40/38 43/41/39 44/42/40 45/43/41

1,220~240,50 1,220~240,50 1,220~240,50 1,220~240,50

12:3*2.5 12:3*2.5 12:3*2.5 12:3*2.5

L.E.V L.E.V L.E.V L.E.V

White White White White

950*950*30 950*950*30 950*950*30 950*950*30

37.4*37.4*1.2 37.4*37.4*1.2 37.4*37.4*1.2 37.4*37.4*1.2

Notes:-

1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB

- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB

- Interconnecting Piping Length 7.5m

- Level Difference of Zero.

Heating: - Indoor Temperature 20°C(68°F) DB / 15°C(59°F) WB

- Outdoor Temperature 7°C(44.6°F) DB / 6°C(42.8°F) WB

- Interconnecting Piping Length 7.5 m

- Level Difference of Zero.

2. Capacities are Net Capacities.

3. Due to our policy of innovation some specifications may be changed without notification.

4. L.E.V. : Linear Expansion Valve

Conversion Formula

kcal/h = kW x 860
Btu/h = kW x 3414
cfm = m3/min x 35.3

Service Manual 23

Functions

2. Functions

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

Room temperature control

Starting Current Control

Time Delay Safety Control

Indoor Fan Speed Control

Soft Dry Operation Mode

Airflow Direction Control

Deice (defrost) control (Heating)

Auto Restart

Hot-start Control (Heating)

• The indoor fan does not rotate until the evaporator pip­ing temperature will be reached at 25°C.

Compact and light design

• To install a unit is very convenient because of smaller
size than textile.

Low noise

• The most advanced low-noise design.

• The adoption of turbo fan and round type heat exchang-

er give the quietest operation.

Long life filter

• Long life wrinkle(type) and washable and anti-bacteria
filter is adopted.

High head Drain pump

• Built-in drain pump automatically drains water.

• A standard drain-head height of up to 700mm is possible.

High-Ceiling corresponding Function

• According to the height of ceiling, the RPM of indoor fan
motor is selected to increase air reaching distance.

Central Control(Optional)

•

It is operating individually or totally by central control function.

• Room temperature sensor. (Thermistor)

•

Maintains the room temperature in accordance with the Setting Temperature.

• Indoor fan is delayed for 5 seconds at the starting.

• Restarting is inhibited for approx. 3 minutes.

• Jet, High, Med, Low

• Intermittent operation of fan at low speed.

• The louver can be set at swing up and down automatically.

• Although the air-conditioner is turned off by a power failure, it is restarted auto-

matically previous operation mode after power supply.

• Both the indoor and outdoor fan stops during defrosting.

• Hot start after defrost ends.

24 Indoor Unit

Operation detail

3. Operation detail

■ Time Delay Safety Control

• 5 sec

...

Vertical air flow direction control louvers open in 5 seconds to prevent noise between louvers and wind.

• 5 sec

...

The 4-way valve is ceased for 5 sec. to prevent the refrigerant-gas abnormal noise when the Heating

operation is OFF or switched to the other operation mode when compress is off.

While compressor is running, it takes 3~5 seconds to switch.

■ Auto Swing Control

• This function is to swing the louver up and down automatically.

■ Soft-Dry Operation

• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by microcontroller control.

■ Cooling Mode Operation

• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote con-
troller and the operation diagram is as following

Intake Air Temperature

COMP. ON
(SET TEMPERATURE +0.5°C)

COMP. OFF
(SET TEMPERATURE -0.5°C)

More than More than

3 minutes 3 minutes

Selecting Selecting Selecting

fan speed fan speed fan speed

INDOOR FAN Low Low

(1) The function of main control

Service Manual 25

Operation detail

Intake Air temperature
Setting Temperature .+3°C

(Compressor OFF)

Setting Temperature
(Compressor ON)

INDOOR FAN Low OFF Low Low OFF

■ Heating Mode Operation

The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.

Hot Start

Low

Selecting

Fan Speed

minimum 3min

Selecting fan

speed

minimum

10sec.

1min

AA

minimum

1min.

minimum

10sec.

B

■ Hot-start Control

The indoor fan does no rotate until the evaporator piping temperature will be reached to 25°C.

The operation diagram is as following.

PIPING
TEMPERATURE

1min

COMPRESSOR

INDOOR FAN OFF LOW

Selected Fan

ON

22°C

25°C

• A point; While the indoor Heat-Exchanger temperature is higher than 40°C fan operates at low speed,
when it becomes lower than 40˚C fan stops.

• B point; When the indoor Heat-Exchanger temperature is higher than 31°C, fan operates at selected fan
speed, when it becomes lower than 31°C, the fan operates at low speed for 10sec, after 10sec, it
operates at selected fan speed.

26 Indoor Unit

Dimensional Drawings

4. Dimensional Drawings

CRNN126TEA0, CRNN186TEA0,

269

670

55

570

269

190.5

160

52

90

90

120.4

30

521

670

570
450

40

110 110

670

670

CLOSE OPEN OPEN CLOSE

Unit:cm

Ceiling

Ceiling Board

Ceiling Board

30 or more

Above 250

330 or less

100

or more

50 or
more

50 or
more

30 or less

Floor

(unit:mm)

Service Manual 27

Dimensional Drawings

CRNN246TDA0, CRNN286TDA0, CRNN366TDA0
CRNN426TDA0, CRNN486TDA0

290

950

950

950

950

290

210.5

180

52

140

40

110

30

90

90

110

55

840

785

840
678

Unit:cm

Ceiling

Ceiling Board

Ceiling Board

30 or more

Above 250

330 or less

100

or more

50 or
more

50 or
more

30 or less

Floor

(unit:mm)

28 Indoor Unit

Piping Diagrams

5. Piping Diagrams

Heat Exchanger

Turbo Fan

lndoor unit

LEV

:Heating

:Cooling

Filter

Filter

: Thermistor

Refrigerant pipe connection port diameter

Model
CRNN126TEA0
CRNN186TEA0
CRNN246TDA0
CRNN286TDA0
CRNN366TDA0
CRNN426TDA0
CRNN486TDA0

Gas

12.7(1/2)

15.88(5/8)

15.88(5/8)

15.88(5/8)

19.05(3/4)

19.05(3/4)

19.05(3/4)

Liquid

6.35(1/4)

9.52(3/8)

9.52(3/8)

9.52(3/8)

9.52(3/8)

9.52(3/8)

9.52(3/8)

[unit: mm(inch)]

Service Manual 29

Wiring Diagrams

6. Wiring Diagrams

CN-POWER

CONNECTOR
NUMBER

CN-MOTOR2
CN-D/PUMP
CN-COMM
CN-DISP1
CN-LEV
CN-STEP/M1
CN-FLOAT
CN-PIPE
CN-PIPE/O
CN-ROOM
CN-REMO

CN-POWER
CN-MOTOR2

CN-COMM
CN-DISP1
CN-LEV
CN-STEP/M1

CN-PIPE
CN-PIPE/O
CN-ROOM
CN-REMO

AC POWER SUPPLY
AC FAN MOTOR OUTPUT
DRAIN PUMP OUTPUT
COMMUNICATION
DISPLAY
LEV OUTPUT
STEP MOTOR
FLOAT SWITCH INPUT
PIPE SENSOR
DISCHARGE PIPE SENSOR
ROOM SENSOR
REMOTE CONTROLLER

WHITE
YELLOW
WHITE
WHITE
WHITE
WHITE
WHITE
BLUE
WHITE
RED
BLUE
WHITE

AC POWER LINE INPUT FOR INDOOR CONTROLLER
MOTOR OUTPUT OF PHASE CONTROL
AC OUTPUT FOR DRAIN PUMP
COMMUNICATION BETWEEN INDOOR AND OUTDOOR
DISPLAY OF INDOOR STATUS
LEV CONTROL OUTPUT
STEP MOTOR OUTPUT
FLOAT SWITCH SENSING
PIPE THERMISTOR
DISCHARGE PIPE THERMISTOR
ROOM THERMISTOR
REMOTE CONTROL LINE

SPEC COLOR DESCRIPTION

CN-AIRC

AIR CLEAN WHITE AIR CLEAN SIGNAL

(Transmission)

1(L)

2(N)

34

30 Indoor Unit

Explodede View

7. Exploded View

CRNN126TEA0, CRNN186TEA0

354211

266012

352115

352118

330870

158591

249951

268714

263230-1

263230-2
263230-3

Service Manual 31

Explodede View

346810

130411

359011

152312

W0CZZ

267110

352150-1

140570

268712

146811

352150-2

130911-1

137211

130911-2

135802

32 Indoor Unit

Explodede View

130411

354211-2

330870

263230-2

352118

266012

55211G

249951

263230-1

352114

158591

268714

263230-3

249951

354211-1

CRNN246TDA0, CRNN286TDA0, CRNN366TDA0, CRNN426TDA0, CRNN486TDA0

Service Manual 33

Explodede View

130411

346810

152312

135314

135802

352150

359012

130911-2

130913-1

152510

140570

W0CZZ

146811

137211

267110

268712

130911-1

130913-2

34 Indoor Unit

Replacement Parts List

8. Replacement Parts List

CRNN126TEA0 CRNN186TEA0

130411 BASE ASSY,WELD[INDOOR] 3041A10013A R
130911-1 CABINET ASSEMBLY,INDOOR 3091A10023C R
130911-2 CABINET ASSEMBLY,INDOOR 3091A10023D R

135802 DOOR 3580A20005A R

137211 PANEL ASSY,FRONT(INDOOR) 3721A10021A R

140570 LOCKER 4056A20001A R

146811 MOTOR ASSY,STEP 4681AP2968D R

152312 FILTER ASSY,AIR CLEANER 5231A10005A R

158591 PUMP ASSEMBLY,WATER 5859A20001H R

249951 CONTROL BOX ASSEMBLY,INDOOR 4995A10083A 4995A10083B R
263230-1 THERMISTOR ASSEMBLY(ROOM) 6323AQ3214B R
263230-2 THERMISTOR ASSEMBLY(PIPE-IN) 6323A30002B R
263230-3 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226R R

266012 SWITCH ASSY,FLOAT 6601A20001F R

267110 REMOTE CONTROLLER ASSEMBLY 6711A10002A R

268712 PWB(PCB) ASSY,DISPLAY 6871A20096C R

268714 PWB(PCB) ASSEMBLY,MAIN 6871A10089D 6871A10089E R

330870 DRAIN PAN ASSEMBLY 3087A10002A R

346810 MOTOR ASSEMBLY,SINGLE 4681AC2026E 4681AC2026D R

352115 TUBE ASSEMBLY,EVAPORATOR IN 5211A10335B 5211A10335A R

352118 TUBE ASSEMBLY,MENIFOLD(INDOOR) 5211A20241N 5211A20241P R

354211 EVAPORATOR ASSY,BENDING 5421A10006A 5421A10006B R

359011 FAN,TURBO 5900A10004A R

W0CZZ CAPACITOR,DRAWING 3H00660N R
352150-1 DRAIN TUBE ASSEMBLY 5251AP2984A R
352150-2 DRAIN ASSEMBLY,TUBE 5251A20002A R

PART NO.

DESCRIPTION

REMARK

LOCATION

NO.

Service Manual 35

Replacement Parts List

CRNN246TDA0 CRNN286TDA0 CRNN366TDA0 CRNN426TDA0 CRNN486TDA0

354211-1 EVAPORATOR ASSY 5421A10016A R
354211-2 EVAPORATOR ASSY 5421A10016B R

352118

TUBE ASSEMBLY, MENIFOLD (INDOOR)

5211A20251B R

TUBE ASSEMBLY, MENIFOLD (INDOOR)

5211A20251H 5211A20251G R

352114 TUBE ASSEMBLY, DISTRIBUTOR 5211A10299A R

55211G TUBE ASSEMBLY, EXPANSION 5211A10298A R

158591 PUMP ASSEMBLY, WATER 5859A20001D R
266012 SWITCH ASSY, FLOAT 6601A20001F R
330870 DRAIN PAN ASSY 3087A100006A R
249951 CONTROL BOX ASSY

4995A20268X 4995A20268Y 4995A20268A 4995A20268Z 4995A10106L

R

268714 PWB(PCB) ASSY, MAIN

6871A10089F

F6871A10089G

6871A10089H 6871A10089S 6871A10089T

R
130411 BASE ASSY, WELD INDOOR 3041A10016A R
346810 MOTOR ASSY, INDOOR 4681A20006J 4681A20006H R
359012 FAN,TURBO 5900A10003B R
140570 LOCKER 4056A20001B R

130911-1 CABINET ASSY, INDOOR 3091A10031A R
130911-2 CABINET ASSY, INDOOR 3091A10031B R
130913-1 CABINET ASSEMBLY, WELD 3091A10030A R
130913-2 CABINET ASSEMBLY, WELD 3091A10030B R

152510 DRAIN ASSY, TUBE 5251A20002B R
352150 DRAIN TUBE ASSY 5251AP2984A R
137211 PANEL ASSY, FRONT(INDOOR) 3721A10025A R
135314 GRILLE INLET 3530A10062A R
146811 MOTOR ASSY, STEP 4681A20055A R
268712 PWB(PCB) ASSY, DISPLAY 6871A20096C R
152312 FILTER ASSY 5231A10004A R
135802 DOOR LOCK 3580A20005A R
267110 WIRED REMOTE CONTROLLER 6711A10002A R

263230-1 THERMISTOR ASSY(PIPE-IN) 6323A30002A R
263230-2 THERMISTOR ASSY(PIPE-OUT) 6323AQ3226T R
263230-3 THERMISTOR ASSY(ROOM) 6323A30004C R

W0CZZ CAPACITOR 3H00660M 2A00986D R

PART NO.

DESCRIPTION

REMARK

LOCATION

NO.

36 Indoor Unit

1. Specifications.............................................................................37

2. Functions ....................................................................................39

3. Operation Details........................................................................40

4. Dimensional Drawings...............................................................42

5. Piping Diagrams.........................................................................43

6. Wiring Diagrams.........................................................................44

7. Exploded View............................................................................45

8. Replacement Parts List..............................................................47

CRNN-BH / CRNN-BG / CRNN-BE
Ceiling Concealed Duct Type (High static)

Service Manual 37

Specifications

1. Specifi cations

Notes:-

1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB

- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB

- Interconnecting Piping Length 7.5m

- Level Difference of Zero.

Heating: - Indoor Temperature 20°C(68°F) DB / 15°C(59°F) WB

- Outdoor Temperature 7°C(44.6°F) DB / 6°C(42.8°F) WB

- Interconnecting Piping Length 7.5 m

- Level Difference of Zero.

2. Capacities are Net Capacities.

3. Due to our policy of innovation some specifications may be changed without notification.

4. L.E.V. : Linear Expansion Valve

Conversion Formula

kcal/h = kW x 860
Btu/h = kW x 3414
cfm = m

3

/min x 35.3

Model Unit

W

Cooling Capacity kcal/h

Btu/h

W

Heating Capacity kcal/h

Btu/h

Casing
Dimensions (W*H*D)

mm

inch

Coil

Rows x Columns x FPI
Face Area m

2

Moisture removal l/h.

Type

Fan

Motor Output x Number

W

Air Flow Rate(H/M/L) cmm

cfm

External Static Pressure

Pa
Drive
Speed control

Temperature Control
Sound Absorbing Thermal Insulation Material
Safety Device

Liquid Side mm(inch)

Pipe Connections

Gas Side mm(inch)
Drain Pipe(Internal Dia.)

mm
Net Weight kg(lbs)
Noise Level

(Sound Press,1.5m, H/M/L)

dBA±3
Power Supply Ø,V,Hz
Power Cable

AWG#:P*mm

2

Refrigerant Control

Standard Accessories

CRNN186BHA0 CRNN246BHA0 CRNN286BGA0

5,300 7,000 8,200
4,557 6,019 7,052

18,084 23,885 27,995

5,963 7,875 9.255
5,127 6,771 7,933

20,345 26,870 31,494

Galvanized Steel Plate

880*260*450 880*260*450 1,180*298*450

34.6*10.2*17.7 34.6*10.2*17.7 46.4*11.7*17.7
2*10*21 3*10*21 3*12*21

0.15 0.15 0.20

2.0 2.5 3.0

Sirocco Fan Sirocco Fan Sirocco Fan

118 118 272

16.5 / 14.5 / 13 18 / 16.5 / 14 30 / 27 / 25
583 / 512 / 459 636 / 583 / 494 1,059 / 953 / 882

78.5 58.8 78.5
Direct

Phase control

Microprocessor, Thermostat for cooling and heating

Foamed polystyrene

Fuse, Thermal Fuse for Fan Motor

9.52 (3/8) 9.52 (3/8) 9.52 (3/8)

15.88 (5/8) 15.88 (5/8) 15.88 (5/8)
25 25 25

34(74.9) 35(77.2) 38(83.8)

36 / 34 / 32 38 / 35 / 32 40 / 38 / 36

1,220~240,50 1,220~240,50 1,220~240,50

12:3*2.5 12:3*2.5 12:3*2.5

L.E.V L.E.V L.E.V

Owner Manual, Installation Manual, Drain Hose, Clamp Metal, Insulation
for Fitting, Sealing Pads, Clamps, Screws

38 Indoor Unit

Specifications

Model Unit

W

Cooling Capacity kcal/h

Btu/h

W

Heating Capacity kcal/h

Btu/h

Casing
Dimensions (W*H*D)

mm

inch

Coil

Rows x Columns x FPI
Face Area m

2

Moisture removal l/h.

Type

Fan

Motor Output x Number

W

Air Flow Rate(H/M/L) cmm

cfm

External Static Pressure

Pa
Drive
Speed control

Temperature Control
Sound Absorbing Thermal Insulation Material
Safety Device

Liquid Side mm(inch)

Pipe Connections

Gas Side mm(inch)
Drain Pipe(Internal Dia.)

mm
Net Weight kg(lbs)
Noise Level

(Sound Press,1.5m, H/M/L)

dBA±3
Power Supply Ø,V,Hz
Power Cable

AWG#:P*mm

2

Refrigerant Control

Standard Accessories

CRNN366BGA0 CRNN426BGA0 CRNN486BEA0

10,600 12,300 14,100

9,116 10,578 12,126
36,188 41,992 48,137
11,925 13,837 15,885
10,255 11,900 13,661
40,712 47,410 54,231

Galvanized Steel Plate

1,180*298*450 1,230*370*680 1,230*370*680

46.4*11.7*17.7 48.4*14.6*26.8 48.4*14.6*26.8
3*12*21 3*14*17 3*14*17

0.20 0.55 0.25

3.5 5.0 6.0

Sirocco Fan Sirocco Fan Sirocco Fan

272 391 391

32/29/26.5 38/34/28 40/36/30

1,130/1,024/936 1,341/1,200/988 1,413/1,271/1,059

78.5 78.5 98.1
Direct

Phase control Steps control

Microprocessor, Thermostat for cooling and heating

Foamed polystyrene

Fuse, Thermal Fuse for Fan Motor

9.52(3/8) 9.52(3/8) 9.52(3/8)

19.05(3/4) 19.05(3/4) 19.05(3/4)
25 25 25

38(83.8) 70(154.3) 70(154.3)

44/42/40 46/44/42 48/46/44

1,220~240,50 1,220~240,50 1,220~240,50

12:3*2.5 12:3*2.5 12:3*2.5

L.E.V L.E.V L.E.V

Owner Manual, Installation Manual, Drain Hose, Clamp Metal, Insulation for
Fitting, Sealing Pads, Clamps, Screws

Notes:-

1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB

- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB

- Interconnecting Piping Length 7.5m

- Level Difference of Zero.

Heating: - Indoor Temperature 20°C(68°F) DB / 15°C(59°F) WB

- Outdoor Temperature 7°C(44.6°F) DB / 6°C(42.8°F) WB

- Interconnecting Piping Length 7.5 m

- Level Difference of Zero.

2. Capacities are Net Capacities.

3. Due to our policy of innovation some specifications may be changed without notification.

4. L.E.V. : Linear Expansion Valve

Conversion Formula

kcal/h = kW x 860
Btu/h = kW x 3414
cfm = m3/min x 35.3

Service Manual 39

2. Functions

Functions

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

Room temperature control

Starting Current Control

Time Delay Safety Control

Indoor Fan Speed Control

Soft Dry Operation Mode

Deice (defrost) control (Heating)

Auto Restart

Hot-start Control (Heating)

• The indoor fan does not rotate until the evaporator piping
temperature reaches 25°C.

High head height Drain pump

• A standard drain-head height of up to 700mm is possible.

Central Control(Optional)

•

It is operating individually or totally by central control function.

•

Both the indoor and outdoor fan stops during defrosting.

•

The indoor fan stops until the evaporator pipe temperature will be reached
at 28°C.

• Room temperature sensor. (Thermistor)

•

Maintains the room temperature in accordance with the Setting Temperature.

• Indoor fan is delayed for 5 seconds at the starting.

• Restarting is inhibited for approx. 3 minutes.

• High, Med, Low

• Intermittent operation of fan at low speed.

• Although the air-conditioner is turned off by a power failure, it is restarted auto-

matically previous operation mode after power supply.

• Both the indoor and outdoor fan stops during defrosting.

• Hot start after defrost ends.

Defrost(Deice) control (Heating)

Hot-start Control (Heating)

40 Indoor Unit

Operation Details

3. Operation Details

■ Time Delay safety Control

• 30sec

...

The 4-way valve is ceased for 30sec. to prevent the refrigerant-gas abnormal noise when the Heating
operation is OFF or switched to the other operation mode while compress is off.
While compressor is running, it takes 3~5 seconds to switch to another mode.

■ Soft-Dry Operation

• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by microcontroller control.

■ Cooling Mode Operation

• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote con­troller and the operation diagram is as following.

Intake Air Temperature

SET TEMPERATURE +0.5°C
(COMP. ON)

SET TEMPERATURE -0.5°C
(COMP. OFF)

More than More than

3 minutes 3 minutes

Selecting Selecting Selecting

fan speed fan speed fan speed

COMPRESSOR ON OFF ON OFF ON

INDOOR FAN Low Low

(1) The function of main control

Service Manual 41

Operation Details

Intake Air Temperature
Setting Temperature +3°C

(Compressor OFF)

Setting Temperature
(Compressor ON)

INDOOR FAN Low OFF Low Low OFF

COMPRESSOR ON OFF ON OFF

• A point; While the indoor Heat-Exchanger temperature is higher than 40°C fan operates at low speed,
when it becomes lower than 40˚C fan stops.

• B point; When the indoor Heat-Exchanger temperature is higher than 42°C, fan operates at seleted fan
speed, when it becomes lower than 39°C, the fan operates at low speed.

■ Heating Mode Operation

The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.

Hot Start

Low

Selecting

Fan Speed

minimum 3min

Selecting fan

speed

minimum

10sec.

1min

AA

minimum

10sec.

B

■ Hot-Start Control

• The indoor fan does not rotate until the evaporator piping temperature reaches 25°C.

• The operation diagram is as following.

PIPING
TEMPERATURE

1min

COMPRESSOR

INDOOR FAN

ON

22°C

: Selected Fan : Low Fan : Fan Stop

25°C

42 Indoor Unit

Dimensional Drawings

4. Dimensional Drawings

Top view

(unit: mm)

H

Front view

600600

Front

Inspection hole

(600X600)

Control box

1000

l

i

h

j

k

A

H

CD

EF

B

(G)

ab c d

K

J

fe

C D E F (G) H J K a b c d e f h i j k l

355 45.5 450 30 87 750 163 260 61.5 243 212.3 243 110 130 52 66 81 30 158.5
355 45.5 450 30 87 830 186 298 229.5 243 232 243 116 160 53 59 81 19 158.5

570.5 54 680 30 120 1006 294 370 253.5 253 217 253 152 186 42 143 82 50 172

Model A B

186/246BH 932 882

286/366/426BG 1232 1182

486BE 1292 1230

(Unit: mm)

Service Manual 43

5. Piping Diagrams

Piping Diagrams

Heat Exchanger

Sirocco Fan

lndoor unit

LEV

:Heating

:Cooling

Filter

Filter

: Thermistor

Refrigerant pipe connection port diameter

Model
CRNN186BHA0
CRNN246BHA0
CRNN286BGA0
CRNN366BGA0
CRNN426BGA0
CRNN486BEA0

Gas

15.88(5/8)

19.05(3/4)

19.05(3/4)

9.52(3/8)

9.52(3/8)

Liquid

9.52(3/8)

[unit: mm(inch)]

44 Indoor Unit

Wiring Diagrams

6. Wiring Diagrams

CN-POWER

CONNECTOR
NUMBER

CN-MOTOR2
CN-D/PUMP
CN-COMM
CN-LEV
CN-FLOAT
CN-PIPE
CN-PIPE/O
CN-ROOM
CN-REMO

CN-POWER
CN-MOTOR2
CN-D/PUMP
CN-COMM
CN-LEV
CN-FLOAT
CN-PIPE
CN-PIPE/O
CN-ROOM
CN-REMO

AC POWER SUPPLY
AC FAN MOTOR OUTPUT
DRAIN PUMP OUTPUT
COMMUNICATION

LEV OUTPUT
FLOAT SWITCH INPUT
PIPE SENSOR
DISCHARGE PIPE SENSOR
ROOM SENSOR
REMOTE CONTROLLER

WHITE
YELLOW
WHITE
WHITE
WHITE
BLUE
WHITE
RED
BLUE
WHITE

AC POWER LINE INPUT FOR INDOOR CONTROLLER
MOTOR OUTPUT OF PHASE CONTROL
AC OUTPUT FOR DRAIN PUMP
COMMUNICATION BETWEEN INDOOR AND OUTDOOR
LEV CONTROL OUTPUT
FLOAT SWITCH SENSING
PIPE THERMISTOR
DISCHARGE PIPE THERMISTOR
ROOM THERMISTOR
REMOTE CONTROL LINE

SPEC COLOR DESCRIPTION

CN-AIRC AIR CLEAN WHITE AIR CLEAN SIGNAL

(Transmission)

32(N)1(L) 4

Service Manual 45

7. Exploded View

Exploded View

346810

359012

354210

55211G

152302

352118

330870

W0CZZ

268714

249951

336610-2

267110

263230-2

263230-1

336610-1

158591

263230-3

• CRNN186BHA0

• CRNN246BHA0

• CRNN286BGA0

• CRNN366BGA0

• CRNN426BGA0

46 Indoor Unit

Exploded View

330870

152302

268714

35211C-2

35211C-1

267110

249951

346810

336610-1

336610-2

359012-2

359012-1

354210

352118

W0CZZ

263230-2

263230-3

158591

55211G

263230-1

• CRNN486BEA0

Service Manual 47

Replacement Parts List

8. Replacement Parts List

152302 FILTER(MECH),A/C 5230A30001M 5230A30001M R
152302 FILTER(MECH), A/C 5230A30001M R
158591 PUMP ASSEMBLY, WATER 5859A20002A R

249951 CONTROL BOX ASSEMBLY, INDOOR 4995A20164M 4995A20164L R
263230-1 THERMISTOR ASSEMBLY(ROOM) 6323AQ3214E R
263230-2 THERMISTOR ASSEMBLY(PIPE-IN) 6323AQ3226G R
263230-3 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226W R

266012 SWITCH ASSEMBLY, FLOAT 6601A20001E R

267110 REMOTE CONTROLLER ASSEMBLY 6711A20043D R

268714 PWB(PCB) ASSEMBLY, MAIN 6871A10089J 6871A10089K R

330870 DRAIN PAN ASSEMBLY 3087A10008D R
336610-1 HOUSING(MECH), WRAPPER 3660A20017A R
336610-2 HOUSING(MECH), WRAPPER 3660A20018A R

346810 MOTOR ASEMBLY, INDOOR 4681A10013C R

352118 TUBE ASSEMBLY, MENIFOLD(INDOOR) 5211A20465D R

354210 EVAPORATOR ASSEMBLY, FIRST 5421A20100A 5421A20100B R

359012 FAN ASSEMBLY, BLOWER 5901A10026A R

352115 TUBE ASSEMBLY, EVAPORATOR IN 5211A10305B 5211A10305A R

W0CZZ CAPACITOR, DRAWING 2A00986D R

CRNN186BHA0 CRNN246BHA0

DESCRIPTION

LOCATION

No.

Part No.

REMARKS

152302 FILTER(MECH), A/C 5230A30001L R

158591 PUMP ASSEMBLY, WATER 5859A20002A R

249951 CONTROL BOX ASSEMBLY, INDOOR 4995A10127F 4995A10127G 4995A10127H R
263230-1 THERMISTOR ASSEMBLY(ROOM) 6323A30004D R
263230-2 THERMISTOR ASSEMBLY(PIPE-IN) 6323AQ3226G R
263230-3 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226W R

266012 SWITCH ASSEMBLY, FLOAT 6601A20001E R

267110 REMOTE CONTROLLER ASSEMBLY 6711A20043D R

268714 PWB(PCB) ASSEMBLY, MAIN 6871A10089U 6871A10089L 6871A10089V R

330870 DRAIN PAN ASSEMBLY 3087A10008C R
336610-1 HOUSING(MECH), WRAPPER 3660A20019A R
336610-2 HOUSING(MECH), WRAPPER 3660A20020A R

346810 MOTOR ASEMBLY, INDOOR 4681A10013A R

352118 TUBE ASSEMBLY, MENIFOLD(INDOOR) 5211A20416G 5211A20416H R

354210 EVAPORATOR ASSEMBLY, FIRST 5421A10027C R

359012 FAN ASSEMBLY, BLOWER 5901A10026A R

55211G TUBE ASSEMBLY, EXPANSION 5211A10426A R
W0CZZ CAPACITOR, DRAWING 2A00986D R

CRNN286BGA0 CRNN366BGA0 CRNN426BGA0

DESCRIPTION

Part No.

REMARKS

152302 FILTER(MECH), A/C 5230A30001A R

158591 PUMP ASSEMBLY, WATER 5859A10002A R

249951 CONTROL BOX ASSEMBLY, INDOOR 4995A10127J R
263230-1 THERMISTOR ASSEMBLY(ROOM) 6323A30004D R
263230-2 THERMISTOR ASSEMBLY(PIPE-IN) 6323AQ3226G R
263230-3 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226W R

266012 SWITCH ASSEMBLY, FLOAT 6601A20001E R

267110 REMOTE CONTROLLER ASSEMBLY 6711A10002D R

268714 PWB(PCB) ASSEMBLY, MAIN 6871A10089W R

330870 DRAIN PAN ASSEMBLY 3087A20023A R
336610-1 HOUSING(MECH), WRAPPER 3661A20009E R
336610-2 HOUSING(MECH), WRAPPER 3661A20009F R

346810 MOTOR ASEMBLY, INDOOR 4681A20005K R

352118 TUBE ASSEMBLY, MENIFOLD(INDOOR) 5211A30076B R

354210 EVAPORATOR ASSEMBLY, FIRST 5421A20008A R
359012-1 FAN ASSEMBLY, BLOWER 5901A10015E R
359012-2 FAN ASSEMBLY, BLOWER 5901A10015F R

55211G TUBE ASSEMBLY, EXPANSION 5211A10416A R

W0CZZ CAPACITOR, DRAWING 0CZZA20001C R
35211C-1 TUBE ASSEMBLY,DISCHARGE(IN) 5211A30077A R
35211C-2 TUBE ASSEMBLY,DISCHARGE(OUT) 5211A30094B R

CRNN486BEA0

DESCRIPTION

Part No.

REMARKS

LOCATION

No.

LOCATION

No.

48 Indoor Unit

1. Specifications.............................................................................49

2. Functions ....................................................................................50

3. Operation Details........................................................................51

4. Dimensional Drawings...............................................................53

5. Piping Diagrams.........................................................................54

6. Wiring Diagrams.........................................................................55

7. Exploded View............................................................................56

8. Replacement Parts List..............................................................57

CRNN-BN / CRNN-BJ
Ceiling Concealed Duct Type (Low static)

Service Manual 49

Specifications

1. Specifications

Notes:-

1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB

- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB

- Interconnecting Piping Length 7.5m

- Level Difference of Zero.

Heating: - Indoor Temperature 20°C(68°F) DB / 15°C(59°F) WB

- Outdoor Temperature 7°C(44.6°F) DB / 6°C(42.8°F) WB

- Interconnecting Piping Length 7.5 m

- Level Difference of Zero.

2. Capacities are Net Capacities.

3. Due to our policy of innovation some specifications may be changed without notification.

4. L.E.V. : Linear Expansion Valve

Conversion Formula

kcal/h = kW x 860
Btu/h = kW x 3414
cfm = m

3

/min x 35.3

Model Unit

W

Cooling Capacity kcal/h

Btu/h

W

Heating Capacity kcal/h

Btu/h
Casing
Dimensions (W*H*D) mm

inch

Coil

Rows*Steps*Fin Pitch

inch
Moisture removal l/h
Fan Model

Type
Motor Output

W

Air Flow Rate(H/M/L) CMM

CFM

External Static Pressure

Pa
Drive
Speed control

Temperature Control
Sound Absorbing Thermal Insulation Material
Safety Device
Pipe Connections

Liquid Side mm(inch)
Gas Side mm(inch)
Drain Pipe(Internal Dia.)

mm
Net Weight kg(lbs)
Noise Level(SoundPress,1.5m,H/M/L) dBA±3
Power Supply Ø,V,Hz
Power Cable

AWG#:P*mm

2

Refrigerant Control
Standard Accessories

CRNN076BNG0 CRNN096BJG0 CRNN126BJG0

2,100 2,600 3,500
1,806 2,235 3,009
7,165 8,871 11,942
2,363 2,925 3,923
2,031 2,515 3,385
8,061 9,980 13,435

Galvanized Steel Plate

783*220*520 873*220*520 873*220*520

30.8*8.7*20.5 34.3*8.7*20.5 34.3*8.7*20.5
2*9*14 2*9*14 2*9*14

1.0 1.0 1.5

D-7K D-9K D-12K

Sirocco Fan Sirocco Fan Sirocco Fan

13 17 20

6.4/5.9/5.4 7.0/6.5/6.0 10.2/9.2/8.2

226/208/191 247/230/212 360/325/290

00 0

Direct

Steps Control

Microprocessor,Thermistat for cooling and heating

Foamed polystyrene

Fuse,Thermal Fuse for Fan Motor

6.35(1/4) 6.35(1/4) 6.35(1/4)

12.7(1/2) 12.7(1/2) 12.7(1/2)
25 25 25

23(50.7) 24(52.9) 24(52.9)

36/34/32 37/35/33 38/36/34

1,220~240,50 1,220~240,50 1,220~240,50

12:3 * 2.5 12:3 * 2.5 12:3 * 2.5

LEV LEV LEV

Owner's Manual, Installation Manual, Drain Hose, Clamp Metal, Insulation for
Fitting, Sealing Pads, Clamps, Screws

50 Indoor Unit

Functions

2. Functions

Indoor Unit

Duct-Low

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

Room temperature control

Starting Current Control

Time Delay Safety Control

Indoor Fan Speed Control

Soft Dry Operation Mode

Deice (defrost) control (Heating)

Auto Restart

Hot-start Control (Heating)

• The indoor fan does not rotate until the evaporator piping
temperature reaches 25°C.

High head height Drain pump

• A standard drain-head height of up to 700mm is possible.

Central Control(Optional)

•

It is operating individually or totally by central control function.

• Room temperature sensor. (Thermistor)

•

Maintains the room temperature in accordance with the Setting Temperature.

• Indoor fan is delayed for 5 seconds at the starting.

• Restarting is inhibited for approx. 3 minutes.

• High, Med, Low

• Intermittent operation of fan at low speed.

• Although the air-conditioner is turned off by a power failure, it is restarted auto-

matically previous operation mode after power supply.

• Both the indoor and outdoor fan stops during defrosting.

• Hot start after defrost ends.

Service Manual 51

3. Operation Details

■ Time Delay safety Control

• 30sec

...

The 4-way valve is ceased for 30sec. to prevent the refrigerant-gas abnormal noise when the Heating
operation is OFF or switched to the other operation mode while compress is off.
While compressor is running, it takes 3~5 seconds to switch to another mode.

■ Soft-Dry Operation

• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by microcontroller control.

■ Cooling Mode Operation

• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote con­troller and the operation diagram is as following.

Intake Air Temperature

SET TEMPERATURE +0.5°C
(COMP. ON)

SET TEMPERATURE -0.5°C
(COMP. OFF)

More than More than

3 minutes 3 minutes

Selecting Selecting Selecting

fan speed fan speed fan speed

COMPRESSOR ON OFF ON OFF ON

INDOOR FAN Low Low

(1) The function of main control

Functions

52 Indoor Unit

Operation Details

Intake Air Temperature
Setting Temperature +3°C

(Compressor OFF)

Setting Temperature
(Compressor ON)

INDOOR FAN Low OFF Low Low OFF

COMPRESSOR ON OFF ON OFF

• A point; While the indoor Heat-Exchanger temperature is higher than 40°C fan operates at low speed,

when it becomes lower than 40˚C fan stops.

• B point; When the indoor Heat-Exchanger temperature is higher than 42°C, fan operates at seleted fan

speed, when it becomes lower than 39°C, the fan operates at low speed.

■ Heating Mode Operation

The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.

Hot Start

Low

Selecting

Fan Speed

minimum 3min

Selecting fan

speed

minimum

10sec.

1min

AA

minimum

10sec.

B

■ Hot-Start Control

• The indoor fan does not rotate until the evaporator piping temperature reaches 25°C.

• The operation diagram is as following.

PIPING
TEMPERATURE

1min

COMPRESSOR

INDOOR FAN

ON

22°C

: Selected Fan : Low Fan : Fan Stop

25°C

Service Manual 53

Dimensional Drawings

4. Dimensional Drawings

H

Front view

Top view

(unit: mm)

600600

Front

Inspection hole

(600X600)

1000

Control box

B

A

C

D

EF

G

H

J

Model A B C D E F G H J

CRNN076BNG0 783 667 300 100 500 20 639 120 220

CRNN096BJG0 873 767 300 100 500 20 729 120 220
CRNN126BJG0

873 767 300 100 500 20 729 120 220

54 Indoor Unit

Piping Diagrams

5. Piping Diagrams

Heat Exchanger

Sirocco Fan

lndoor unit

LEV

:Heating

:Cooling

Filter

Filter

: Thermistor

Refrigerant pipe connection port diameter

Model

CRNN076BNG0

CRNN096BJG0
CRNN126BJG0

Gas

Ø12.7(1/2)

Liquid

Ø6.35(1/4)

[unit: mm(inch)]

Service Manual 55

Wiring Diagrams

6. Wiring Diagrams

CN-PIPE/O

(Transmission)

CN-POWER

CONNECTOR
NUMBER

CN-MOTOR2
CN-D/PUMP
CN-COMM
CN-LEV
CN-FLOAT
CN-PIPE
CN-PIPE/O
CN-ROOM
CN-REMO

CN-POWER
CN-MOTOR2
CN-D/PUMP
CN-COMM
CN-LEV
CN-FLOAT
CN-PIPE
CN-PIPE/O
CN-ROOM
CN-REMO

AC POWER SUPPLY
AC FAN MOTOR OUTPUT
DRAIN PUMP OUTPUT
COMMUNICATION

LEV OUTPUT
FLOAT SWITCH INPUT
PIPE SENSOR
DISCHARGE PIPE SENSOR
ROOM SENSOR
REMOTE CONTROLLER

WHITE
YELLOW
WHITE
WHITE
WHITE
BLUE
WHITE
RED
BLUE
WHITE

AC POWER LINE INPUT FOR INDOOR CONTROLLER
MOTOR OUTPUT OF PHASE CONTROL
AC OUTPUT FOR DRAIN PUMP
COMMUNICATION BETWEEN INDOOR AND OUTDOOR
LEV CONTROL OUTPUT
FLOAT SWITCH SENSING
PIPE THERMISTOR
DISCHARGE PIPE THERMISTOR
ROOM THERMISTOR
REMOTE CONTROL LINE

SPEC COLOR DESCRIPTION

CN-AIRC AIR CLEAN WHITE AIR CLEAN SIGNAL

56 Indoor Unit

7. Exploded View

152302

268714

158591

135500-2

359012

267110

147901

249951

336610

137214

354210

437214

346810

137213-1

137213-2

263230-1
263230-2
263230-3

135500-1

330870

Exploded View

Service Manual 57

Replacement Parts List

8. Replacement Parts List

135500-1 COVER 3550A20214A 3550A20214B 3550A20214B R
135500-2 COVER 3550A20215A 3550A20215A 3550A20215A R
137213-1 PANEL ASSEMBLY,SIDE 3721A20136A 3721A20136A 3721A20136A R
137213-2 PANEL ASSEMBLY,SIDE 3721A20136B 3721A20136B 3721A20136B R

137214 PANEL ASSEMBLY,UPPER 3721A20135A 3721A20135B 3721A20135B R
147901 BARRIER,INDOOR 4790A20043A 4790A20043B 4790A20043B R
152302 FILTER(MECH),A/C 5230A30009A 5230A30009B 5230A30009B R
158591 PUMP ASSEMBLY,WATER 5859A20002B 5859A20002B 5859A20002B R

249951 CONTROL BOX ASSEMBLY,INDOOR 4995A20297A 4995A20297B 4995A20297C R
263230-1 THERMISTOR ASSEMBLY(ROOM) 6323A30004E 6323A30004E 6323A30004E R
263230-2 THERMISTOR ASSEMBLY(PIPE-IN) 6323A30002A 6323A30002A 6323A30002A R
263230-3 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226T 6323AQ3226T 6323AQ3226T R

267110 REMOTE CONTROLLER ASSEMBLY 6711A10002D 6711A10002D 6711A10002D R

268714 PWB(PCB) ASSEMBLY,MAIN 6871A10108A 6871A10108B 6871A10108C R

330870 DRAIN PAN ASSEMBLY 3087A20019A 3087A20019B 3087A20019B R

336610 HOUSING ASSEMBLY (MECH) 3661A20022A 3661A20023A 3661A20023A R

346810 MOTOR ASSEMBLY,INDOOR 4681A20100A 4681A20100B 4681A20100C R

354210 EVAPORATOR ASSEMBLY,FIRST 5421A20147A 5421A20147B 5421A20147B R

359012 FAN ASSEMBLY,BLOWER 5901A20027A 5901A20027B 5901A20027B R

437214 PANEL ASSEMBLY,BASE 3721A20137A 3721A20137B 3721A20137B R

CRNN076BNG0 CRNN096BJG0 CRNN126BJG0

LOCATION No.

DESCRIPTION

PART NO.

REMARKS

58 Indoor Unit

Indoor Unit

Convertible

1. Specification...............................................................................59

2. Installstion...................................................................................60

3. Operation Details........................................................................61

4. Display Function .............................................................................67

5. Dimensional Drawings...............................................................68

6. Piping Diagrams.........................................................................69

7. Wiring Diagrams.........................................................................70

8. Disassembly of the parts ................................................................71

9. Exploded View..................................................................................75

10. Replacement Parts List............................................................76

CRNN-VB
Convertible Type

Service Manual 59

Specifications

1. Specifications

Notes:-

1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB

- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB

- Interconnecting Piping Length 7.5m

- Level Difference of Zero.

Heating: - Indoor Temperature 20°C(68°F) DB / 15°C(59°F) WB

- Outdoor Temperature 7°C(44.6°F) DB / 6°C(42.8°F) WB

- Interconnecting Piping Length 7.5 m

- Level Difference of Zero.

2. Capacities are Net Capacities.

3. Due to our policy of innovation some specifications may be changed without notification.

4. L.E.V. : Linear Expansion Valve

Conversion Formula

kcal/h = kW x 860
Btu/h = kW x 3414
cfm = m3/min x 35.3

Model Unit

W

Cooling Capacity kcal/h

Btu/h

W

Heating Capacity kcal/h

Btu/h

Color
Dimensions (W*H*D)

mm

inch
Casing
Coil

Rows x Columns x FPI
Face Area

m

2

Moisture removal l/h.

Type
Motor Output x Number

W

Fan Air Flow Rate(High) cmm

cfm
Drive
Speed control

Temperature Control
Sound Absorbing Thermal Insulation Material
Safety Device

Liquid Side mm(inch)

Pipe Connections

Gas Side mm(inch)
Drain Pipe(Internal Dia.)

mm
Net Weight kg(lbs)
Noise Level

(Sound Press,1.5m, H/M/L)

dBA±3
Power Supply Ø,V,Hz
Power Cable

AWG#:P*mm

2

Refrigerant Control
Standard Accessories

CRNN186VBA0 CRNN246VBA0

5,300 7,032
4,557 6,048

18,084 24,600

5,963 7,735
5,127 6,653

20,345 26,400

White

1200*615*205

47.24*24.21*8.07

Galvanized Steel plate + Painting

2*12*18 2*12*18

0.26 0.26

2.5 3.0
Cross Flow Fan

30 30

13.5 16
477 565

Direct

Phase control

Microprocessor, Thermostat for cooling and heating

Foamed polystyrene

Fuse, Thermal Fuse for Fan Motor

9.52 (3/8)

15.88 (5/8)
17

30(66.1)

43 / 40 / 37 45/42/39

1,220~240,50

12:3*2.5

L.E.V

Owner Manual, Installation Manual, Paper Pattern for Installation, Drain
Hose, Clamp Metal, Insulation for Fitting, Clamps, Washers, Flare Nut.

60 Indoor Unit

Indoor Unit

Convertible

Room temperature sensor. (Thermistor)

Maintains the room temperature in accordance with the Setting Temperature.

Indoor fan is delayed for 5 seconds at the starting.

Restarting is inhibited for approx. 3 minutes.

High, Med, Low, Chaos

--- Lights up in operation

--- Lights up in Sleep Mode

--- Lights up in Timer Mode

--- Lights up in Deice Mode or Hot Start Mode

Intermittent operation of fan at low speed.

The fan is switched to low(Cooling), med(Heating) speed.
The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

The fan is switched to intermittent or irregular operation
The fan speed is automatically switched from high to low speed.

The louver can be set at the desired position or swing
up and down, right and left automatically.

The setting temperature, indoor fan speed and desired
operation made are automatically set by fuzzy rule.

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

Room temperature control

Starting Current Control

Time Delay Safety Control

Indoor Fan Speed Control

Operation indication Lamps (LED)

Soft Dry Operation Mode

Both the indoor and outdoor fan
stops during deicing.
Hot start after deice ends.

The indoor fan does not rotate until
the evaporator piping temperature
will be reached at 22°C.

Deice (defrost) control (Heating)

Hot-start Control (Heating)

Sleep Mode Auto Control

Natural Air Control by CHAOS Logic

Airflow Direction Control

Auto Operation

Installstion

2. Installstion

Service Manual 61

Operation Details

3. Operation Details

■ Time Delay Safety Control

• 3min…The compressor is ceased for 3minutes to balance the pressure in the refrigeration cycle.
(Protection of compressor)

• 5sec…Vertical air flow direction control louvers open in 5 seconds to prevent noise between louvers and wind.

• 30sec… The 4-way valve is ceased for 30sec. to prevent the refrigerant-gas abnormal noise when the Heating oper-

ation is OFF or switched to the other operation mode while compress is off.
While compressor is running, it takes 3~5 seconds to switch.

■ Airflow Direction Control

• This function is to swing the louver up and down automatically and to set it at the desired position.

• The procedure is as the following.

1st ; Press the ON/OFF Button to operate the product.
2nd ; Press the Airflow Direction Control Button to swing the louver up and down automatically.
3nd ; Repress the Airflow Direction Control Button to set the louver as the desired position.

MODE0

1

2

3

4

5

6

7

135°

Cooling

MODE

MODE

MODE

MODE

MODE

MODE

MODE

9

MODE

(CLOSE)

OPEN

135°

12°

Cooling

HeatingHeatingHeating

MODE 1

MODE 2

MODE 3

MODE 4

MODE 5

MODE 6

MODE 7

MODE 8

MODE 9

CLOSE

OPEN

135°

12°

Cooling

Heating

Heating

Heating

MODE 1

MODE 2

MODE 3

MODE 4

MODE 5

MODE 6

MODE 7

MODE 8

MODE 9

CLOSE

For Heating Model

• Airflow direction control figure when installed on the
floor.

• Airflow direction control figure when installed under
the ceiling.

(1) The function of main control

62 Indoor Unit

Indoor Unit

Convertible

Operation Details

■ Cooling Mode Operation

When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote
controller and the operation diagram is as following

■ Cooling or Heating Mode with Sleep Mode Auto Operation

• When selecting the Cooling( ) or the Heating( ) combined with the Sleep Mode Auto Operation( ), the
operation diagram is as following.

Cooling Mode with the Sleep Mode

• The setting temperature will be raised by 1°C 30minutes later and by 2°C 1 hour later.

• The operation will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

Heating Mode with the Sleep Mode.

The operation will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

Intake Air Temperature

COMP. ON
(SET TEMPERATURE +0.5°C)

COMP. OFF
(SET TEMPERATURE -0.5°C)

More than More than

3 minutes 3 minutes

INDOOR FAN Low Low Low Low Low
COMPRESSOR ON OFF ON OFF ON

30 minutes 30 minutes

1°C

1°C

Setting Temperature +3°C
(Compressor OFF)

Setting Temperature
(Compressor ON)

Indoor Fan Med. Med. Med. Med. Med. Med.
Compressor ON OFF ON OFF ON OFF

Intake Air Temperature

COMP. ON
(SET TEMPERATURE +0.5°C)

COMP. OFF
(SET TEMPERATURE -0.5°C)

More than More than

3 minutes 3 minutes

Selecting Selecting Selecting

fan speed fan speed fan speed

COMPRESSOR ON OFF ON OFF ON

INDOOR FAN Low Low

Service Manual 63

Operation Details

■ Natural wind by CHAOS logic

For more fresh feeling than other fan speed mode, press
the indoor fan Speed Selector and set to CHAOS mode.
In this mode, the wind blows like natural breeze by auto­matically changing fan speed according to the CHAOS
logic.

Intake Air temperature

OUTDOOR FAN/COMP.

INDOOR FAN

: Setting fan speed : LOW

Cooling on temperature.
(Setting temperature +0.5)

Setting CHAOS Natural wind

Setting temp.
Cooling off temperature

(Setting temperature -0.5)

: CHAOS Natural wind : COMP ON : COMP OFF

GRAPH of Natural wind by the CHAOS logic (During Cooling operation)

Intake Air temperature

30sec

OUTDOOR FAN/COMP.

INDOOR FAN

: Setting fan speed : LOW

Heating off temperature
(Setting temperature +3.0)

Setting CHAOS Natural wind

Heating on temperature
(Setting temperature)

: CHAOS Natural wind : COMP ON : COMP OFF

GRAPH of Natural wind by the CHAOS logic (During Heating operation)

LOW OR STOP

64 Indoor Unit

Indoor Unit

Convertible

Operation Details

■ Heating Mode Operation

The unit will operate according to the setting by the remote controller and the operation diagram is shown
as following.

• For Heating Model

INDOOR FAN

4-WAY VALVE

ON

ON
ON

OFF
OFF

OFF
OFF

ON
ON

ON
ON

26°C

28°C

Indoor piping temperature

Intake Air temperature

Setting temperature +3.0˚C
(Compressor OFF)

Setting temperature
(Compressor ON)

minimum

1min.

minimum

3min.

Fan

Stops

Low
Fan

Low Fan Low Fan Fan StopSelected Fan

Selected

Fan

Low

Fan

Selected

Fan

minimum

3min.

minimum

30sec.

minimum

1min.

OUTDOOR FAN

COMPRESSOR

■ Hot-Start Control

The indoor fan does not rotate until the evaporator piping temperature will be reached to 22 .
During heating operation, if piping temperature falls below 28°C fan stops.

The operation diagram is as following.

PIPING
TEMPERATURE

1min

COMPRESSOR

INDOOR FAN

ON

26°C

: Selected Fan : Low Fan : Fan Stop

28°C

Service Manual 65

Operation Details

INDOOR FAN

Low Fan Low Fan

Intake Air temperature

Setting temperature +1.0˚C
(Compressor ON)

Setting temperature -0.5˚C
(Compressor OFF)

Setting temperature

2min.58sec. 2min.58sec.

10min. 10min.7min.

Within 7min.

CoolingCooling

OUTDOOR FAN

COMPRESSOR

Selected

Fan

Selected

Fan

ON

ON

ON

ON

OFF

OFF

OFF

OFF

ON

ON

OFF

OFF

ON

ON

OFF

OFFONON

OFF

OFF

■ Soft Dry Operation

• During Soft Dry Operation, the compressor ON temperature is the setting temperature plus 1°C, the compressor
OFF temperature is the setting temperature minus 0.5°C.

• When the room temperature rises over the compressor ON temperature, the operation mode is switched to

the cooling mode.

• When the room temperature falls between the compressor ON temperature and OFF temperature, the opera-

tion mode is switched to the Soft Dry Operation.
In this temperature range, 10min. Dry Operation, 7min operation OFF. During 10min Dry operation, if the room
temperature falls below compressor OFF temperature, Compressor OFF.

• In dehumidify mode, control of fan speed is as following.

■ Forced operation

• If you lose wireless remote controller, you can operate the unit with forced operation switch.

• The standard conditions are as following.

• Unit operates in low fan mode for first 15 seconds, then switched to proper operation mode according to

intake Air temperature.

Room Temperature 24

°C

21°C Room Temperature 24

°C

Room Temperature 21

°C

Operation Mode Cooling Soft Dry Heating

FAN Speed High Soft Dry Rule High

Setting Temperature

22°C Air Intake Temperature 24°C

R

Forced
Operation Button

Press the Forced Operation Button.

• Press the Forced Operation Button once
again to stop operation.

66 Indoor Unit

Indoor Unit

Convertible

Operation Details

■ Protection of the evaporator pipe from frosting

If the temperature of the indoor coil is below -2°C after 7 minutes from starting the compressor,

the compressor and the outdoor fan is stopped, and then after 3 minute delay of the compressor
and the temperature of the indoor coil is over 7°C, the compressor and the outdoor fan is reoper­ated.
Indoor fan operates at low speed (comp. OFF) or at selected speed (comp. ON)

■ Inlet grille open

Once the inlet grille is opened during operation of the unit, the unit automatically stops operation and the lamps
will be turned-off. But memorized functions are still available.
When the inlet grille is closed again, the unit become waiting state for operation. From then, the unit can be
operated by forced operation button or Start/Stop button of remote controller.

■ Test Operation

• When pressing forced operation switch about 3 seconds, the unit operates in cooling mode at high speed
fan regardless of room temperature and resets in 18 min.

• During test operation, if remote controller signal is received, the unit operates as remote controller sets.

■ Auto Restarting Operation

• When the power is restored after a sudden power failure while in appliance is in operation, the mode
before the power failure is kept on the memory and the appliance should operate automatically in the
mode kept in the memory.

• Operation Mode that is kept on the memory

- State of Operation ON/OFF

- Operation Mode/Setting Temperature /Selected airflow Speed

- Sleep Timer Mode/Remaining Time of Sleep Timer(unit of hour)

• If no input by the remote controller or no switching of the slide switch within 7 hours after the appliance
operates by the Auto Restarting operation, the appliance is forced to stop at the moment of 7 hours
elapse.

Service Manual 67

Display Function

4. Display Function

Note)

For normal operation after checking by test mode, you should press SW1 nine times for resetting or recon­nect the power cord.

• Coolling, Soft Dry, Fan, Heating

• Timer Mode

• Sleep Mode

• Hot-start, Deice

Operation Indicator

Timer Indicator

Sleep Timer Indicator

Deice Indicator

68 Indoor Unit

Indoor Unit

Convertible

Dimensional Drawings

5. Dimensional Drawings

1200

205

615

R

More than

20cm

More than eye-level

More than

20cm

R

R

More than

20cm

More than

20cm

(Ceiling installation)

(Floor/Wall installation)

250

36

36

1076

(Rear Side)

392

265

468

63

38

175

(Installation Plate)

(Unit: mm)

Service Manual 69

Piping Diagrams

6. Piping Diagrams

Heat Exchanger

C.F.F.

lndoor unit

LEV

:Heating

:Cooling

Filter

Filter

: Thermistor

Refrigerant pipe connection port diameter

Model

CRNN186VBA0
CRNN246VBA0

Gas

15.88(5/8)

Liquid

9.52(3/8)

[unit: mm(inch)]

70 Indoor Unit

Indoor Unit

Convertible

Wiring Diagrams

7. Wiring Diagrams

CN-POWER

CONNECTOR
NUMBER

CN-MOTOR2
CN-COMM
CN-DISP1
CN-LEV
CN-STEP/M1

CN-PIPE
CN-PIPE/O
CN-ROOM
CN-REMO

CN-POWER
CN-MOTOR2
CN-COMM
CN-DISP1
CN-LEV
CN-STEP/M1

CN-PIPE
CN-PIPE/O
CN-ROOM
CN-REMO

AC POWER SUPPLY
AC FAN MOTOR OUTPUT
COMMUNICATION

DISPLAY
LEV OUTPUT
STEP MOTOR

PIPE SENSOR
DISCHARGE PIPE SENSOR
ROOM SENSOR
REMOTE CONTROLLER

WHITE
YELLOW
WHITE
WHITE
WHITE
WHITE

WHITE
RED
BLUE
WHITE

AC POWER LINE INPUT FOR INDOOR CONTROLLER
MOTOR OUTPUT OF PHASE CONTROL
COMMUNICATION BETWEEN INDOOR AND OUTDOOR
DISPLAY OF INDOOR STATUS
LEV CONTROL OUTPUT
STEP MOTOR OUTPUT

PIPE THERMISTOR
DISCHARGE PIPE THERMISTOR
ROOM THERMISTOR
REMOTE CONTROL LINE

SPEC COLOR DESCRIPTION

CN-STEP/M2 STEP MOTOR WHITE STEP MOTOR OUTPUT
CN-DOOR DOOR SENSE WHITE SENSING DOOR STATUS(OPEN/CLOSE)

(Transmission)

31(L) 2(N) 4

Service Manual 71

Disassembly of the parts

8. Disassembly of the parts

Warning :

Disconnect the unit from power supply before making
any checks.
Be sure the power switch is set to “OFF”.

1. Remove the air filter.

• Pull the inlet grille slightly toward you.

• Pull out the air filter. (2 pieces)

2. Remove the girlle from chassis

• Remove the screws securing the side plate and
push to the bottom-side.

• Unhook the hanger from the hanger screw at the
left and the right side.

• Pick out the inlet grille.

3. Remove the lower air guide

• Remove a screw of both side fixing "barrier air­guide".

• Remove the screws of both sides of the lower
air-guide.

• Remove the lower air-guide toward “arrow
mark” by turning upwards as shown in figure.

R

RRR

1

3

4

2

Hanger

Screw

Hanger

Inlet Grille

Barrier Air guide

Lower Air guide

72 Indoor Unit

Indoor Unit

Convertible

Disassembly of the parts

4. Remove air guide upper, crossflow fan and
motor.

• Remove the screws of both sides and center
securing the upper air-guide.

• Remove 2 screws fastening the bracket of door
switch.

• Remove a bearing assembly by removing a
screw and the bearing cover.

• Remove 4 screws securing the motor cover.

• Loosen the screw securing the crossflow fan to

the fan motor shaft. (do not remove)

• Remove the crossflow fan by sliding it out from
the shaft of fan motor.

5. Remove the control box Assembly.

• Disconnect the step motor connector, fan
motor connector, display PCB connector,
thermistor connector and door switch con­nector from the main PCB.

• If necessary, disconnect power supply cord
and connecting cable from the terminal block
and remove the cord clamp screw.

• Remove 2 screws securing the control box
and pick out the control box carefully.

R

R

R

Motor
Cover

Bearing

Cover

Bearing

Door

Switch

Service Manual 73

Disassembly of the parts

6. Remove the front panel.

• Remove the screws of both sides fixing the
front panel.

• Push the upper side of front panel strongly to
pull out the front panel from the inner hook of
diffuser frame.

• Pull down the front panel carefully not so as
to harm the display PCB wires and thermistor
wires.

7. Remove the diffuser assembly.

• Remove the screws of both side of diffuser
assembly. (4 pieces)

• Push the upper side of cabinet strongly to
pull out the inner hook of diffuser frame from
the cabinet hole.

• Take up the diffuser frame carefully not so as
to harm the display PCB wires and the step
motor wires.

8. Remove display PCB assembly.

• Remove the screws at the both side of dis­play cover.

• If necessary, disconnect the display PCB
connector from PCB assembly.

• Remove 2 screws of PCB assembly.

R

R

Diffuser frame

Front

Panel

Diffuser

frame

Front

Panel

Hook

Diffuser

frame

Cabinet

Hook

Display Cover

74 Indoor Unit

Indoor Unit

Convertible

Disassembly of the parts

9. Remove the vane-upper, vane-lower and step
motor.

• Remove 2 screws securing the step motor
assembly and pull it out from the vanes care­fully.

• Unhook the vanes from the vane supporter
and remove the upper vane and lower vane
by pulling the center of vanes with care.

10. Remove the drain pan assembly.

• Remove the both side of screws. (4 pieces)

• Pull out the drain pan assembly.

• Be careful not to harm to the EPS packing of

drain pan and the tubings of evaporator.

11. Remove the evaporator.

• Remove the screws of both sides securing
the EVA barrier-R/L on the side cabinet.

• Remove the screws which fasten the barrier
on the evaporator and take out the barrier
assembly.

• Remove the evaporator assembly by sliding
toward arrow mark. (As shown in figure)

EVA. Barrier-L

EVA. Barrier-R

Side Cabinet

Lower Vane

Upper Vane

Vane Supporter

Step Motor

Service Manual 75

Exploded View

9. Exploded View

130911

263230-1

263230-2

263230-3

352115

35211A

342800

359010

152302

354210

W0CZZ

268714

733010-2

249951

166000

346810

330870

132100

268712237900

235450

146811

159911

159901

137211

135316

733010-1

135414

SERVICE MANUAL

OWNER'S MANUAL

INS

TA

LLATIO

N M

AN

U

AL

166000

76 Indoor Unit

Indoor Unit

Convertible

Replacement Parts List

10. Replacement Parts List

130911 CABINET ASSEMBLY,INDOOR 3091AP2533A R
132100 FRAME 3022AP1283B R
135303 GRILLE,INLET 5236AP1236A R
135314 GRILLE ASSEMBLY,INLET SUB 5237AP2817B R
135316 GRILLE ASSEMBLY,DIFFUSER(INDOOR) 3531A10272B R
137211 PANEL ASSEMBLY,FRONT(INDOOR) 3720AP2767P R
146811 MOTOR ASSEMBLY,STEP 4681AR2727G R
152302 FILTER(MECH),A/C 5230AP7093A R
159901 VANE ASSY 5991AP7334C R
159911 VANE ASSY,HORIZONTAL 5991AP2867B R
166000 SWITCH,PUSH 6600AP2059B R
166000 SWITCH,PUSH 6600AP2059B R
235450 DISPLAY ASSEMBLY (MECH) 3545AP7224B R
237900 WINDOW,DISPLAY 3790AP7080A R

249951 CONTROL BOX ASSEMBLY,INDOOR 4995A10107A 4995A10107D R
263230-1 THERMISTOR ASSEMBLY(ROOM) 6323AQ3214E R
263230-2 THERMISTOR ASSEMBLY(PIPE-IN) 6323A30002C R
263230-3 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226Y R

267110 REMOTE CONTROLLER ASSEMBLY 6711A10002A R

268712 PWB(PCB) ASSY,DISPLAY 6871AQ3263A R

268714 PWB(PCB) ASSEMBLY,MAIN 6871A10089M 6871A10089R R

330870 DRAIN PAN ASSEMBLY 3087AP7233A R

342800 BEARING 3H02821B R

346810 MOTOR ASSEMBLY,INDOOR 4681AP2306M 4681AP2306N R

352115 TUBE ASSEMBLY,EVAPORATOR IN 5211A10332A R

35211A TUBE ASSEMBLY,SUCTION INDOOR 5211AP2813E 5211AP2813J R

352150 HOSE ASSY,DRAIN 5251AP2460B R

354210 EVAPORATOR ASSEMBLY,FIRST 5421AP2812B 5421AP2812A R

359010 FAN ASSY,CROSS FLOW 5901AR2351E R

733010 PLATE ASSEMBLY,INSTALL(R) 3301AP7519A R

733010 PLATE ASSEMBLY,INSTALL(L) 3301AP7519B R

W0CZZ CAPACITOR, DRAWING 3H00671A R

CRNN186VBA0 CRNN246VBA0

LOCATION No.

DESCRIPTION

PART NO.

REMARKS

Service Manual 77

1. Specification...............................................................................78

2. Functions ....................................................................................79

3. Operation Details........................................................................80

4. Dimensional Drawings...............................................................85

5. Piping Diagrams.........................................................................86

6. Wiring Diagrams.........................................................................87

7. Disassembly of the parts.................................................................88

8. Exploded View............................................................................90

9. Replacement Parts List..............................................................92

CRNN-SR / CRNN-ST
Wall Mounted Type

78 Indoor Unit

Indoor Unit

Wall Mounted

Specifications

1. Specifications

Notes:-

1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB z

- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB

- Interconnecting Piping Length 7.5m

- Level Difference of Zero.

Heating: - Indoor Temperature 20°C(68°F) DB / 15°C(59°F) WB

- Outdoor Temperature 7°C(44.6°F) DB / 6°C(42.8°F) WB

- Interconnecting Piping Length 7.5 m

- Level Difference of Zero.

2. Capacities are Net Capacities.

3. Due to our policy of innovation some specifications may be changed without notification.

4. L.E.V. : Linear Expansion Valve

Conversion Formula

kcal/h = kW x 860
Btu/h = kW x 3414
cfm = m

3

/min x 35.3

Model Unit

W

Cooling Capacity kcal/h

Btu/h

W

Heating Capacity kcal/h

Btu/h

Dimensions (W*H*D)

mm

inch
Color
Coil

Rows x Columns x FPI
Face Area m

2

Moisture removal l/h.

Type

Fan

Motor Output x Number

W

Air Flow Rate(High) cmm

cfm
Drive
Speed control

Temperature Control
Sound Absorbing Thermal Insulation Material
Air Filter
Safety Device

Liquid Side mm(inch)

Pipe Connections

Gas Side mm(inch)
Drain Pipe(Internal Dia.)

mm
Net Weight kg(lbs)
Noise Level (Sound Press,1m, H/M/L) dBA±3
Power Supply Ø,V,Hz
Power Cable

AWG#:P*mm

2

Refrigerant Control
Standard Accessories

CRNN076SRA0 CRNN096SRA0 CRNN126SRA0 CRNN186STA0

2,100 2,600 3,500 5,300
1,806 2,235 3,009 4,557
7,165 8,871 11,942 18,084
2,363 2,925 3,938 5,963
2,031 2,515 3,385 5,127
8,061 9,980 13,435 20,345

900*285*156 900*285*156 900*285*156 1090*314*172

35.4*11.2*6.1 35.4*11.2*6.1 35.4*11.2*6.1 42.9*12.4*6.8
White White White White

2*12*20 2*12*20 2*12*20 2*13*20

0.13 0.13 0.13 0.14

1.0 1.0 1.2 2.2

Cross Flow Fan Cross Flow Fan Cross Flow Fan Cross Flow Fan

7.5 7.5 14.4 22

5.6 7.0 9.5 13.5

196 247 336 477

Direct

Phase control

Microprocessor, Thermostat for cooling and heating

Foamed polystyrene

Resin Net(Washable)

Fuse Fuse Fuse Fuse

6.35 (1/4) 6.35 (1/4) 6.35 (1/4) 9.52(3/8)

12.7 (1/2) 12.7 (1/2) 12.7 (1/2) 15.88 (5/8)
25 25 25 25

7(15.4) 7(15.4) 8(17.6) 12(26.5)

30/33/27 34/31/28 36/33/30 40/37/34

1,220~240,50 1,220~240,50 1,220~240,50 1,220~240,50

12:3*2.5 12:3*2.5 12:3*2.5 12:3*2.5

L.E.V L.E.V L.E.V L.E.V

Operation Manual, Installation Manual, Installation Panel, Paper Pattern for
Installation, Clamps, Screws

Service Manual 79

Functions

2. Functions

• Room temperature sensor. (THERMISTOR)

• Maintains the room temperature in accordance with the Setting temperature

• Indoor fan is delayed for 5 seconds at the starting.

• Restarting is inhibited for approx. 3 minutes.

• High, Med, Low, Chaos

--- Lights up in operation

--- Lights up in Sleep Mode

--- Lights up in Timer Mode

--- Lights up in Deice Mode

--- Indicate the setting temperature.

• Intermittent operation of fan at low speed.

• The fan is switched to low(Cooling), med(Heating) speed.

• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

• The fan is switched to intermittent or irregular operation

•

The fan speed is automatically switched from high to low speed.

• The louver can be set at the desired position or swing
up and down automatically.

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

Room temperature control

Starting Current Control

Time Delay Safety Control

Indoor Fan Speed Control

Operation indication Lamps (LED)

Health Dehumidification Operation

• Both the indoor and outdoor fan
stops during deicing.

• Hot start after deice ends.

• The indoor fan does not rotate

until the evaporator piping tem­perature will be reached at 28°C.

• Although the air conditioner is
turned off by a power failure, it
is restarted automatically to
previous operation mode after
power suply.

Sleep Mode Auto Control

Natural Air Control by CHAOS Logic

Airflow Direction Control

Auto Restart

Deice (defrost) control (Heating)

Hot-start Control (Heating)

80 Indoor Unit

Indoor Unit

Wall Mounted

Operation Details

3. Operation Details

• DISPLAY

Operation Indicator

• On while in appliance operation, off while in appliance pause

Sleep Timer Indicator

• On while in sleep timer mode, off when sleep timer cancel or appliance operation pause

Timer Indicator

• On while in timer mode (on/off), off when timer mode is completed or canceled

Defrost Indicator

• Off except when hot start during heating mode operation or while in defrost control

■ Cooling Mode Operation

• When the intake air temperature reaches 0.5°C below the setting temperature, the compressor and the out­door fan stop.

• When it reaches 0.5°C above the setting temperature, they start to operate again.

Compressor ON Temperature ➲ Setting Temperature +0.5°C
Compressor OFF Temperature ➲ Setting Temperature -0.5°C

• While in compressor running, operating with the airflow speed set by the remote control. While in compres­sor not running, operating with the low airflow speed regardless of the setting.

■ Soft Dry Operation Mode

• When the dehumidification operation input by the remote control is received, the intake air temperature is
detected and the setting temperature is automatically set according to the intake air temperature.

26°C ≤ Intake Air Temperature ➲ 25°C
24°C ≤ Intake Intake Air Temperature <26°C ➲ Intake Air Temperature -1°C
18°C ≤ Intake Intake Air Temperature <24°C ➲ Intake Air Temperature -0.5°C
Intake Air Temperature <18°C ➲ 18°C

• While in compressor off, the indoor fan repeats low airflow speed and pause.

• While the intake air temperature is between compressor on temperature and compressor off temperature,

10-min dehumidification operation and 4-min compressor off repeat.
Compressor ON temperature ➲ Setting Temperature +0.5°C
Compressor OFF temperature ➲ Setting Temperature -0.5°C

• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.

■ Heating Mode Operation

• When the intake air temperature reaches +3°C above the setting temperature, the compressor is turned
off. When below the setting temperature, the compressor is turned on.
Compressor ON temperature ➲ Setting temperature
Compressor OFF temperature ➲ Setting temperature+3°C

• While in compressor on, the indoor fan is off when the indoor pipe temperature is below 26°C, when above
28°C , it operates with the low or setting airflow speed.

(1) The function of main control

Service Manual 81

Operation Details

• While in compressor off, the indoor fan is off when the indoor pipe temperature is below 33°C, when above
35°C , it operates with the low airflow speed.

• If overloaded while in heating mode operation, in order to prevent the compressor from OLP operation, the
outdoor fan is turned on/off according to the indoor pipe temperature

• While in defrost control, both of the indoor and outdoor fans are turned off.

■ Fuzzy Operation

• When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed
since the operation off, the operation mode is selected.

• When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and
only the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake
air temperature at that moment as follows.

24°C ≤ Inatake Air Temperature ➲ Fuzzy Operation for Cooling
21°C ≤ Inatake Air Temperature <24°C ➲ Fuzzy Operation for Dehumidification
Inatake Air Temperature <21°C ➲ Fuzzy Operation for Heating

• If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for
10 sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.

1) Fuzzy Operation for Cooling

• According to the setting temperature selected by Fuzzy rule, when the intake air temperature is 0.5°C or
more below the setting temperature, the compressor is turned off. When 0.5°C or more above the setting
temperature, the compressor is turned on.

Compressor ON Temperature ➲ Setting Temperature +0.5°C
Compressor OFF Temperature ➲ Setting Temperature – 0.5°C

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to
the intake air temperature at that time.

26°C≤ Intake Air Temperature ➲ 25°C
24°C≤ Intake Air Temperature <26°C ➲ Intake Air Temperature – 1°C
22°C≤ Intake Air Temperature <24°C ➲ Intake Air Temperature – 0.5°C
18°C≤ Intake Air Temperature <22°C ➲ Intake Air Temperature
Intake Air Temperature <18°C ➲ 18°C

• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.

• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the tem­perature.

82 Indoor Unit

Indoor Unit

Wall Mounted

Operation Details

2) Fuzzy Operation for Dehumidification

• According to the setting temperature selected by Fuzzy rule, when the intake air temperature is 0.5°C or
more below the setting temperature, the compressor is turned off. When 0.5°C or more above the setting
temperature, the compressor is turned on.

Compressor ON Temperature ➲ Setting Temperature + 0.5°C
Compressor OFF Temperature ➲ Setting Temperature – 0.5°C

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temperature at that time.

26°C ≤ Intake Air Temperature ➲ 25°C
24°C ≤ Intake Air Temperature <26°C ➲ Intake Air Temperature – 1°C
22°C ≤ Intake Air Temperature <24°C ➲ Intake Air Temperature – 0.5°C
18°C ≤ Intake Air Temperature <22°C ➲ Intake Air Temperature
Intake Air Temperature <18°C ➲ 18°C

• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.

• While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as in
dehumidification operation.

3) Fuzzy Operation for Heating

• According to the setting temperature selected by Fuzzy rule, when the intake air temperature is 3°C or more
above the setting temperature, the compressor is turned off. When below the setting temperature, the com­pressor is turned on.

Compressor ON Temperature ➲ Setting Temperature
Compressor OFF Temperature ➲ Setting Temperature + 3°C

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temperature at that time.

20°C≤Intake Air Temperature ➲ Intake Air Temperature + 0.5°C
Intake Air Temperature <20°C ➲ 20°C

• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.

• While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or the medium according to
the intake air temperature and the setting temperature.

■ Airflow Speed Selection

• The airflow speed of the indoor fan is set to high, medium, low, or chaos (auto) by the input of the airflow
speed selection key on the remote control.

■ On-Timer Operation

• When the set time is reached after the time is input by the remote control, the appliance starts to operate.

• The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.

• If the appliance is operating at the time set by the timer, the operation continues.

While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.

■ Off-Timer Operation

• When the set time is reached after the time is input by the remote control, the appliance stops operating.

• The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.

• If the appliance is on pause at the time set by the timer, the pause continues.

Service Manual 83

Operation Details

■ Off-Timer <=> On-Timer Operation

• When the set time is reached after the on/off time is input by the remote control, the on/off-timer operation is
carried out according to the set time.

■ Sleep Timer Operation

• When the sleep time is reached after < 1,2,3,4,5,6,7,0(cancel) hour > is input by the remote control while in
appliance operation, the operation of the appliance stops.

• While the appliance is on pause, the sleep timer mode cannot be input.

• While in cooling mode operation, 30 min later since the start of the sleep timer, the setting temperature
increases by 1°C. After another 30 min elapse, it increases by 1°C again.

• When the sleep timer mode is input while in cooling cycle mode, the airflow speed of the indoor fan is set to

the low.

• When the sleep timer mode is input while in heating cycle mode, the airflow speed of the indoor fan is set to
the medium.

■ Chaos Swing Mode

• By the Chaos Swing key input, the upper/lower vane automatically operates with the Chaos Swing or they
are fixed to the desired direction.

• While in Chaos Swing mode, the angles of cooling and heating cycle operations are different.

■ Chaos Natural Wind Mode

• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the
airflow mode is operated for 2~15 sec. randomly by the Chaos Simulation.

■ Jet Cool Mode Operation

• While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in the
other mode operation (cooling, dehumidification, ventilation), the Jet Cool mode is operated.

• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.

• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C.

• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.

• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then

operated in order that the air outflow could reach further.

■ Auto restart

•

In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate
procedures automatically to the previous operating conditions.

84 Indoor Unit

Indoor Unit

Wall Mounted

Operation Details

■ Forced Operation

• Operation procedures when the remote control can't be used.

• The operation will be started if the power button is pressed.

• If you want to stop operation, re-press the button.

• While in forced operation, the key input by the remote control has no effect and the buzzer sounds 10 times

to indicate the forced operation.

■ Test operation

•

During the TEST OPERATION, the unit operates in cooling mode at high speed fan, regardless of room
temperature and resets in 18±1 minutes.

•

During test operation, if remote controller signal is received, the unit operates as remote controller sets.
If you want to use this operation, open the front panel upward and Press the power button let it be pressed
for about 3 seconds.

•

If you want to stop the operation, re-press the button.

■ Protection of the evaporator pipe from frosting

• If the indoor pipe temperature is below 0°C in 7 min. after the compressor operates without any pause while
in cooling cycle operation mode, the compressor and the outdoor fan are turned off in order to protect the
indoor evaporator pipe from frosting.

• When the indoor pipe temperature is 7°C and higher after 3 min. pause of the compressor, the compressor
and the outdoor fan is turned on according to the condition of the room temperature.

■ Buzzer Sounding Operation

• When the appliance-operation key is input by the remote control, the short "beep-beep-" sounds.

• When the appliance-pause key is input by the remote control, the long "beep—" sounds.

Room temperature ≥ 24°C21°C ≤ Room temperature < 24°C Room temperature < 21°C

Operating mode Cooling Healthy Dehumidification Heating

Indoor FAN Speed High High High

Setting Temperature 22°C23°C24°C

Service Manual 85

Dimiensional Drawings

4. Dimiensional Drawings

Installation plate

(Unit : mm)

D

H

W

Model No.

CRNN076SRA0
CRNN096SRA0
CRNN126SRA0

CRNN186STA0

900

1090

285

314

156

172

WHD

86 Indoor Unit

Indoor Unit

Wall Mounted

Piping Diagrams

5. Piping Diagrams

Heat Exchanger

C.F .F

lndoor unit

LEV

:Heating

:Cooling

Filter

Filter

: Thermistor

Refrigerant pipe connection port diameter

Model
CRNN076SRA0
CRNN096SRA0
CRNN126SRA0

CRNN186STA0

Gas

12.7(1/2)

15.88(5/8)

Liquid

6.35(1/4)

9.52(3/8)

[unit: mm(inch)]

Service Manual 87

Wiring Diagrams

6. Wiring Diagrams

CN-POWER

CONNECTOR
NUMBER

CN-MOTOR2
CN-ACDC
CN-COMM
CN-DISP1

CN-LEV

CN-POWER
CN-MOTOR2

CN-COMM
CN-DISP1

CN-LEV
CN-UD
CN-TH1
CN-PIPEOUT

AC POWER SUPPLY
AC FAN MOTOR OUTPUT
AC/DC CONNECTION
COMMUNICATION
DISPLAY

LEV OUTPUT
STEP MOTOR
ROOM/PIPE SENSOR
DISCHARGE PIPE SENSOR

WHITE
YELLOW
WHITE
WHITE
BLUE

WHITE
WHITE
WHITE
RED

AC POWER LINE INPUT FOR INDOOR CONTROLLER
MOTOR OUTPUT OF PHASE CONTROL
CONNECTION BETWEEN AC PCB AND DC PCB
COMMUNICATION BETWEEN INDOOR AND OUTDOOR
DISPLAY OF INDOOR STATUS

LEV CONTROL OUTPUT
STEP MOTOR OUTPUT
ROOM & PIPE THERMISTOR
DISCHARGE PIPE THERMISTOR

SPEC COLOR DESCRIPTION

CN-DISP2 DISPLAY WHITE DISPLAY OF INDOOR STATUS

(Transmission)

88 Indoor Unit

Indoor Unit

Wall Mounted

Disassembly of the parts

7. Disassembly of the parts

Warning :

Disconnect the unit from power supply before mak­ing any checks.
Be sure the power switch is set to “OFF”.

To remove the Grille from the Chassis.

• Set the up-and-down air discharge louver to open
position (horizontally) by finger pressure.

• Remove the securing screws

• To remove the Grille, pull the lower left and right

side of the grille toward you (slightly tilted) and lift
it straight upward.

1. To remove the sensor, housing connect, earth

connector & step motor connector with sen­sor holder, Motor, Evaporator & P.C.B.

Screw

Earth
Conductor

Motor
Connector

LEV
Connector

Display
Connector

Sensor
Conductor

Service Manual 89

Disassembly of the parts

2. To remove the Control Box.

• Remove securing screws.

• Pull the control box out from the chassis

carefully.

3. To remove the Discharge Grille.

• Pull the discharge grille out from the chas­sis carefully.

4. To remove the Evaporator.

• Remove screws securing the evaporator
and the holder eva.

• Unhook the tab on the right inside of the
chassis at the same time, slightly pull the
evaporator toward you until the tab is clear
of the slot.

5. To remove the Cross-Flow Fan

• Loosen the screw securing the cross-flow
fan to the fan motor (do not remove).

• Lift up the right side of the cross-flow fan
and the fan motor, separate the fan motor
from the cross-flow fan.

• Remove the left end of the cross-flow fan
from the self-aligning bearing.

90 Indoor Unit

Indoor Unit

Wall Mounted

Exploded View

8. Exploded View

• CRNN076SRA0, CRNN096SRA0, CRNN126SRA0

135311

268712

159901

352150

152302

346810

131410 733010

359011

342800

135314

267110

135312

146811

35211B

268715

352116

352115

354210

249951

135516 268716

263230-1

W0CZZ

263230-2

Service Manual 91

Exploded View

• CRNN186STA0

135311

268712

159901-2

159901-1

135302

346810

352150

131410 733010

359011

342800

135314

267110

135312

146811

35211B

352111

352116

352115

354210

249951

135516

W0CZZ

263230-1

268716

268715

263230-2

92 Indoor Unit

Indoor Unit

Wall Mounted

Replacement Parts List

9. Replacement Parts List

CRNN076SRA0 CRNN096SRA0 CRNN126SRA0

131410 CHASSIS ASSEMBLY 3141A20005E R
135311

GRILLE ASSEMBLY,DISCHARGE(INDOOR)

3531A10192E R
135312 GRILLE ASSEMBLY,FRONT(INDOOR) 3531A10118W R
135516 COVER ASSEMBLY,MOTOR 3551A20050A R
146811 MOTOR ASSEMBLY,STEP 4681A20055A R
152302 FILTER(MECH),A/C 5230A20014A R
159901 VANE,HORIZONTAL 5990A20007A R
249951 CONTROL BOX ASSEMBLY,INDOOR 4995A20274A 4995A20274B 4995A20274C R

263230-1

THERMISTOR ASSEMBLY(ROOM, PIPE-IN)

6323A20004M R

263230-2 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226Z R

268712 PWB(PCB) ASSEMBLY,DISPLAY 6871A20227J R
268715 PWB(PCB) ASSEMBLY,MAIN(AC) 6871A20274A R
268716 PWB(PCB) ASSEMBLY,MAIN(DC) 6871A20275A 6871A20275B 6871A20275C R
342800 BEARING 4280A20004A R
35211B TUBE ASSEMBLY,TUBING 5211A10324A R
352150 HOSE ASSEMBLY,DRAIN 5251AR2575F R
354210 EVAPORATOR ASSEMBLY,FIRST 5421A20086A R
733010 PLATE 1H00843A R
W0CZZ CAPACITOR,DRAWING 3H01487A R
346810 MOTOR ASSEMBLY,INDOOR 4681A20048L R
267110 REMOTE CONTROLLER ASSEMBLY 6711A20010B R
135314 GRILLE ASSEMBLY,INLET SUB 3531A10117U R
352115 TUBE ASSEMBLY,EVAPORATOR IN 5211A10310A R
352116 TUBE ASSEMBLY,EVAPORATOR OUT 5211A20911A R
359011 FAN ASSEMBLY,CROSS FLOW 5901A20007A R

Location

No.

Description

Part No.

Remarks

CRNN186STA0

131410 CHASSIS ASSEMBLY 3141A10002A R
135311

GRILLE ASSEMBLY,DISCHARGE(INDOOR)

3531A10231Y R
135314 GRILLE ASSEMBLY,INLET SUB 3531A20107L R
135312 GRILLE ASSEMBLY,FRONT(INDOOR) 3531A20207H R
135516 COVER ASSEMBLY,MOTOR 3551A20099C R
146811 MOTOR ASSEMBLY,STEP 4681A20055A R
152302 FILTER(MECH),A/C 5230A20001A R

159901-1 VANE,HORIZONTAL 5990A20008A R
159901-2 VANE,HORIZONTAL 5990A20009A R

249951 CONTROL BOX ASSEMBLY,INDOOR 4995A20274R R

263230-1

THERMISTOR ASSEMBLY(ROOM, PIPE-IN)

6323A20004M R

263230-2 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226Z R

267110 REMOTE CONTROLLER ASSEMBLY 6711A20010B R
268712 PWB(PCB) ASSEMBLY,DISPLAY 6871A20227M R
268715 PWB(PCB) ASSEMBLY,MAIN(AC) 6871A20274A R
268716 PWB(PCB) ASSEMBLY,MAIN(DC) 6871A20275D R
342800 BEARING 4280A20004A R
346810 MOTOR ASSEMBLY,INDOOR 4681A20003D R
352115 TUBE ASSEMBLY,EVAPORATOR IN 5211A14006A R
352116 TUBE ASSEMBLY,EVAPORATOR OUT 5211A30057D R
35211B TUBE ASSEMBLY,TUBING 5211A10324B R
352150 HOSE ASSEMBLY,DRAIN 5251AR2575F R
359011 FAN ASSEMBLY,CROSS FLOW 5901A20008A R
733010 PLATE ASSEMBLY,INSTALL 3301A10002A R
W0CZZ CAPACITOR,DRAWING 3H01487G R
354210 EVAPORATOR ASSEMBLY,FIRST 5421A20010D R

Location

No.

Description

Part No.

Remarks

Service Manual 93

1. Specification...............................................................................94

2. Functions ....................................................................................95

3. Operation Details........................................................................96

4. Display Function.......................................................................102

5. Dimensional Drawings.............................................................103

6. Piping Diagrams.......................................................................104

7. Wiring Diagrams.......................................................................105

8. Disassembly of the parts...............................................................106

9. Exploded View..........................................................................109

10. Replacement Parts List..........................................................110

CRNN-SU
Art Cool Type(Mirror)

94 Indoor Unit

Specifications

1. Specifications

Notes:-

1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB z

- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB

- Interconnecting Piping Length 7.5m

- Level Difference of Zero.

Heating: - Indoor Temperature 20°C(68°F) DB / 15°C(59°F) WB

- Outdoor Temperature 7°C(44.6°F) DB / 6°C(42.8°F) WB

- Interconnecting Piping Length 7.5 m

- Level Difference of Zero.

2. Capacities are Net Capacities.

3. Due to our policy of innovation some specifications may be changed without notification.

4. L.E.V. : Linear Expansion Valve

Conversion Formula

kcal/h = kW x 860
Btu/h = kW x 3414
cfm = m

3

/min x 35.3

Model Unit

W

Cooling Capacity kcal/h

Btu/h

W

Heating Capacity kcal/h

Btu/h

Dimensions (W*H*D)

mm

inch

Coil

Rows x Columns x FPI
Face Area m

2

Moisture removal l/h.

Type

Fan

Motor Output x Number

W

Air Flow Rate(High) cmm

cfm
Drive
Speed control

Temperature Control
Sound Absorbing Thermal Insulation Material
Air Filter
Safety Device

Liquid Side mm(inch)

Pipe Connections

Gas Side mm(inch)
Drain Pipe(Internal Dia.)

mm

Net Weight kg(lbs)
Noise Level (Sound Press,1m, H/M/L) dBA±3
Power Supply Ø,V,Hz
Power Cable

AWG#:P*mm

2

Refrigerant Control
Standard Accessories

Frant Panel Color
("*"Position)

CRNN076SU*0 CRNN096SU*0 CRNN126SU*0

2,100 2,600 3,500
1,806 2,235 3,009
7,165 8,871 11,942
2,363 2,925 3,938
2,031 2,515 3,385
8,061 9,980 13,435

1,030*290*153 1,030*290*153 1,030*290*153

40.6*11.4*6.1 40.6*11.4*6.1 40.6*11.4*6.1
2*12*20 2*12*20 2*12*20

0.13 0.13 0.13

1.0 1.0 1.2

Cross Flow Fan Cross Flow Fan Cross Flow Fan

7.5 7.5 14.4

5.6 7.0 9.5

196 247 336

Direct

Phase control

Microprocessor, Thermostat for cooling and heating

Foamed polystyrene

Resin Net(Washable)

Fuse Fuse Fuse

6.35 (1/4) 6.35 (1/4) 6.35 (1/4)

12.7 (1/2) 12.7 (1/2) 12.7 (1/2)
25 25 25

8(18.5) 8(18.5) 9.5(20.9)

30/33/27 34/31/28 36/33/30

1,220~240,50 1,220~240,50 1,220~240,50

12:3*2.5 12:3*2.5 12:3*2.5

L.E.V L.E.V L.E.V

Operation Manual, Installation Manual, Installation Panel, Paper Pattern
for Installation, Clamps, Screws

R: Mirror, G: Gold, B: Blue

Service Manual 95

Functions

2. Functions

• Room temperature sensor. (THERMISTOR)

• Maintains the room temperature in accordance with the Setting Temp.

• Indoor fan is delayed for 5 sec at the starting.

• Restarting is inhibited for approx. 3 minutes.

• High, Med, Low, CHAOS, JET COOL

• Intermittent operation of fan at low speed.

• The fan is switched to low(Cooling), med(Heating) speed.

• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

• The fan is switched to intermittent or irregular operation

•

The fan speed is automatically switched from high to low speed.

• The louver can be set at the desired position or swing
up and down automatically.

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

Room temperature control

Starting Current Control

Time Delay Safety Control

Indoor Fan Speed Control

Soft Dry Operation Mode

• Both the indoor and outdoor fan stops dur­ing defrosting.

• The indoor fan does not rotate until the
evaporator pipe temperature will be reached
at 28°C.

Sleep Mode Auto Control

Natural Air Control by CHAOS Logic

Airflow Direction Control

Defrost(Deice) control (Heating)

Hot-start Control (Heating)

96 Indoor Unit

Operation Details

3. Operation Details

1. MAIN UNIT FUNCTION

• DISPLAY

Operation Indicator

• ON while in appliance operation, OFF while in appliance pause.

• Flashing while in disconnection or short in Thermistor. (3 sec off / 0.5 sec on)

Sleep Timer Indicator

• ON while in sleep timer mode, OFF when sleep timer cancel or appliance operation pause.

Timer Indicator

• ON while in timer mode (on/off), OFF when timer mode is completed or canceled.

Defrost Indicator

• OFF except when hot start during heating mode operation or while in defrost control.

■ Cooling Mode Operation

• When the intake air temperature reaches 0.5°C below the setting temp, the compressor and the outdoor fan
stop.

• When it reaches 0.5°C above the setting temp, they start to operate again.

Compressor ON Temp ➲ Setting Temp+0.5°C
Compressor OFF Temp ➲ Setting Temp-0.5°C

• While in compressor running, operating with the airflow speed set by the remote control. While in compres­sor not running, operating with the low airflow speed regardless of the setting.

■ Healthy Dehumidification Mode

• When the dehumidification operation input by the remote control is received, the intake air temperature is
detected and the setting temp is automatically set according to the intake air temperature.

26°C ≤ Intake Air Temp ➲ 25°C
24°C ≤ Intake Intake Air Temp<26°C ➲ Intake Air Temp-1°C
18°C ≤ Intake Intake Air Temp<24°C ➲ Intake Air Temp-0.5°C
Intake Air Temp<18°C ➲ 18°C

• While in compressor off, the indoor fan repeats low airflow speed and pause.

• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidifica-

tion operation and 4-min compressor off repeat.
Compressor ON Temp. ➲ Setting Temp+0.5°C
Compressor OFF Temp. ➲ Setting Temp-0.5°C

• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.

Service Manual 97

Operation Details

■ Heating Mode Operation

• When the intake air temp reaches +3°…above the setting temp, the compressor is turned off. When below
the setting temp, the compressor is turned on.

Compressor ON Temp. ➲ Setting Temp.
Compressor OFF Temp. ➲ Setting Temp.+3°C

• While in compressor on, the indoor fan is off when the indoor pipe temp. is below 20°C, when above 28°C
, it operates with the low or setting airflow speed. When the indoor pipe temp is between 20°C and 28°C, it
operates with Super-Low(while in sleep mode, with the medium airflow speed).

• While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C, when above 35°C ,
it operates with the low airflow speed.

• If overloaded while in heating mode operation, in order to prevent the compressor from OLP operation, the
outdoor fan is turned on/off according to the indoor pipe temp.

• While in defrost control, both of the indoor and outdoor fans are turned off.

■ Defrost Control

• While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing,
reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit.

• After 40 min heating mode operation, at 4 min interval, whether to carry out defrost control or not and the
time of defrost control are determined according to the following conditions.

1) While in heating mode operation, the maximum of the indoor pipe temperature is measured and it is com-

pared with the present indoor pipe temperature to get the difference of the indoor pipe temperatures (=the
maximum temperature of indoor pipe ? the present temperature of indoor pipe), according to which,
whether to carry out defrost control or not is determined.

2) According to the need of defrost control shown above and the elapsed time of heating mode operation at

that moment, the defrost control time is determined.

3) When the determined time of defrost control is below 7 min, heating mode operation continues without car-

rying out defrost control. According to the procedure stated above, the determination is made again. When
the defrost control time is 7 min or longer, defrost control is then carried out.

• While in defrost control, the minimum temp of the indoor pipe is measured and it is compared with the pre­sent temp of the indoor pipe to get the difference of the indoor pipe temperatures (=the present temperature
of the indoor pipe ? the minimum temperature of the indoor pipe). When the difference is 5°C or higher,
defrost control is completed and heating mode operation is carried out.

• While in defrost control, if the defrost time determined before the start of defrost control is completed,
defrost control stops and heating mode operation is carried out regardless of the above condition.

• When the indoor pipe temp is 42°C or above, defrost control is not carried out even if the condition is one of
the defrost conditions above.

• While in defrost control, the compressor is on and the indoor fan, the outdoor fan, and the 4 way valve are
off.

98 Indoor Unit

Operation Details

■ Fuzzy Operation

• When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed
since the operation off, the operation mode is selected.

• When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and
only the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake
air temp at that moment as follows.

24°C ≤ Inatake Air Temp ➲ Fuzzy Operation for Cooling
21°C ≤ Inatake Air Temp<24°C ➲ Fuzzy Operation for Dehumidification
Inatake Air Temp<21°C ➲ Fuzzy Operation for Heating

• If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for
10 sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.

1) Fuzzy Operation for Cooling

• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more
below the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the
compressor is turned on.

Compressor ON Temp ➲ Setting Temp +0.5°C
Compressor OFF Temp ➲ Setting Temp + 0.5°C

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to
the intake air temp at that time.

26°C≤ Intake Air Temp ➲ 25°C
24°C≤ Intake Air Temp<26°C ➲ Intake Air Temp + 1°C
22°C≤ Intake Air Temp<24°C ➲ Intake Air Temp + 0.5°C
18°C≤ Intake Air Temp<22°C ➲ Intake Air Temp
Intake Air Temp<18°C ➲ 18°C

• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.

• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the tem­perature.

2) Fuzzy Operation for Dehumidification

• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more
below the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the
compressor is turned on.

Compressor ON Temp ➲ Setting Temp + 0.5°C
Compressor OFF Temp ➲ Setting Temp+0.5°C

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to
the intake air temp at that time.

26°C ≤ Intake Air Temp ➲ 25°C
24°C ≤ Intake Air Temp<26°C ➲ Intake Air Temp+1°C
22°C ≤ Intake Air Temp<24°C ➲ Intake Air Temp+0.5°C
18°C ≤ Intake Air Temp<22°C ➲ Intake Air Temp
Intake Air Temp<18°C ➲ 18°C

• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.

• While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as in
dehumidification operation.

Service Manual 99

Operation Details

3) Fuzzy Operation for Heating

• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C or more above
the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on.

Compressor ON Temp ➲ Setting Temp
Compressor OFF Temp ➲ Setting Temp + 3°C

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to
the intake air temp at that time.

20°C≤Intake Air Temp ➲ Intake Air Temp + 0.5°C
Intake Air Temp<20°C ➲ 20°C

• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.

• While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or the medium according to
the intake air temperature and the setting temperature.

■ Airflow Speed Selection

• The airflow speed of the indoor fan is set to high, medium, low, or chaos (auto) by the input of the airflow
speed selection key on the remote control.

■ On-Timer Operation

• When the set time is reached after the time is input by the remote control, the appliance starts to operate.

• The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.

• If the appliance is operating at the time set by the timer, the operation continues.

■ Off-Timer Operation

• When the set time is reached after the time is input by the remote control, the appliance stops operating.

• The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.

• If the appliance is on pause at the time set by the timer, the pause continues.

■ Off-Timer ↔ On-Timer Operation

• When the set time is reached after the on/off time is input by the remote control, the on/off-timer operation
is carried out according to the set time.

■ Sleep Timer Operation

• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote control while in
appliance operation, the operation of the appliance stops.

• While the appliance is on pause, the sleep timer mode cannot be input.

• While in cooling mode operation, 30 min later since the start of the sleep timer, the setting temperature
increases by 1°C. After another 30 min elapse, it increases by 1°C again.

• When the sleep timer mode is input while in cooling cycle mode, the airflow speed of the indoor fan is set to
the low.

• When the sleep timer mode is input while in heating cycle mode, the airflow speed of the indoor fan is set to
the medium.

100 Indoor Unit

Operation Details

■ Chaos Swing Mode

• By the Chaos Swing key input, the upper/lower vane automatically operates with the Chaos Swing or they
are fixed to the desired direction.

• While in Chaos Swing mode, the angles of cooling and heating cycle operations are different.

■ Chaos Natural Wind Mode

• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the
airflow mode is operated for 2~15 sec. randomly by the Chaos Simulation.

■ Jet Cool Mode Operation

• While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in the

other mode operation (cooling, dehumidification, ventilation), the Jet Cool mode is operated.

• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.

• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C.

• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.

• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then
operated in order that the air outflow could reach further.

■ Forced Operation

• Operation procedures when the remote control can't be used.

• The operation will be started if the power button is pressed.

• If you want to stop operation, re-press the button.

• While in forced operation, the key input by the remote control has no effect and the buzzer sounds 10 times
to indicate the forced operation.

Room temperature ≥ 24°C 21°C ≤ Room temperature < 24°C Room temperature < 21°C

Operating mode Cooling Healthy Dehumidification Heating

Indoor FAN Speed

High High High

Setting Temperature

22°C 23°C 24°C

CLOSED

OPEN

< Cooling Mode >

7°

CLOSED

OPEN

< Heating Mode >

7°