LG Multi V CRUN Series, Multi V CRNN Series 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