Fujitsu AUUA9TLAV, AUUA24TLAV, AUUA18TLAV, AUUA7TLAV, AUUB18TLAV Service Manual

SERVICE MANUAL

208/230V 60Hz

1. TEST RUN

CONTENTS

1-1 EXECUTION PROCEDURE AND EXECUTION PRECAUTIONS.............................

1-2 CHECK ITEMS BEFORE POWER ON.......................................................................

1-2-1 Power source inspection......................................................................................

1-2-2 Outdoor unit field setting inspection.....................................................................

1-2-3 Indoor unit field setting inspection.....................................................................

1-2-4 RB unit field setting inspection.............................................................................

1-2-5 Transmission wire installation inspection............................................................. 01-06

1-2-6 Piping installation

1-2-7 Refrigerant charge amount inspection................................................................. 01-11

1-2-8 3-way valve opening inspection........................................................................... 01-11

1-3 CHECK ITEMS AFTER POWER ON.........................................................................

1-3-1 Power source check...........................................

1-3-2 Error indication check..........................................................................................

1-3-3 Installed unit and their addresses check......................................................

1-3-4 Transmission line connection check.....................................................................

1-3-5 Operation check sheet.......................................................................................... 01-15

1-4 TEST RUN OPERATION........................................................................................... 01-16

1-4-1 Test Run from outdoor unit PC board................................................................

1-4-2 Test Run From remote controller.......................................................................

1-5 TEST RUN CONTROL...............................................................................................

1-6 FIELD SETTING / FUNCTION SETTING FOR OUTOOR UNIT................................

1-7 FIELD SETTING / FUNCTION SETTING FOR INOOR UNIT....................................

1-8 FIELD SETTING / FUNCTION SETTING FOR OUTDOOR AIR UNIT......................

inspection................................................................................ 01-09

.................................................

01-01 01-03 01-03 01-04

... 01-04

01-05

01-12

01-12 01-12

........ 01-13

01-14

01-16

01-17 01-20 01-21 01-25 01-26

2. OUTDOOR UNIT OPERATION CONTROL

2-1 REFRIGERANT CIRCUIT..........................................................................................

2-1-1 Refrigerant circuit for Outdoor air unit.................................................................

2-2 INPUT / OUTPUT LIST...............................................................................................

2-3 HEAT RECOVERY OPERATION CONTROL............................................................ 02-03

2-3-1 Operation mode selection and controlling...........................................................

2-4 COMPRESSOR OPERATION.................................................................................... 02-03

2-4-1 Operation / Stop Condition..................................................................................

2-4-2 Compressor speed control..................................................................................

3 Capacity control...................................................................................................

2-4-

2-4-4 Compressor Sequence Operation.......................................................................

2-5 HEAT EXCHANGER CONTROL................................................................................

2-5-1 Operation mode selection and controlling...........................................................

2-5-2 Capacity control...................................................................................................

2-6 FAN CONTROL..........................................................................................................

2-6-1 Cooling / Cooling main operation........................................................................

2-6-2 Heating / Heating main operation........................................................................

2-7 EXPANSION VALVE CONTROL...............................................................................

2-8 SPECIAL OPERATION...............................................................................................

2-8-1 Oil Recovery Operation.......................................................................................

2-8-2 Pre-Heat Operation.............................................................................................

2-8-3 Defrost Operation Control.................................

2-8-4 Low noise mode...................................................................................................

2-8-5 Snow Falling Protection Fan Mode -Default Setting -..........................................

...................................................

02-01 02-01

02-02

02-03

02-03 02-04 02-05

02-06 02-07

02-07 02-07

02-08 02-08

02-09 02-10 02-11 02-11

02-11 02-12 02-14 02-15

+1

CONTENTS

2-9 PROTECTIVE FUNCTION........................................................................................

2-9-1 Discharge temperature protection.......................................................................

2-9-2 High pressure protection......................................................................................

2-9-3 Low pressure protection......................................................................................

2-9-4 Heatsink temperature protection.........................................................................

2-9-5 Compressor temperature protection....................................................................

2-9-6 O.U Heat - Ex.1(2) Gas Temp. abnormal stop....................................................

2-9-7 Over current protection........................................................................................

2-9-8 Compressor Frequency Maximum setting protection..........................................

2-9-9 Compressor compress ratio protection................................................................

2-9-10 Fan Motor, Motor Driver abnormal stop protection............................................

2-9-11 EEV Coil abnormal Stop....................................................................................

3. INDOOR UNIT AND RB UNIT OPERATION

3-1 FAN CONTROL..........................................................................................................

3-1-1 Fan Speed Setting...............................................................................................

3-1-2 "AUTO" Position...................................................................................................

3-2 MASTER CONTROL..................................................................................................

02-16 02-16 02-18 02-20 02-21 02-21

02-21 02-22 02-22 02-22 02-23

02-23

03-01 03-01

03-01 03-02

3-2-1 Operation Mode Control.......................................................................................

3-2-2 Auto Changeover Heating / Cooling Operation....................................................

3-2-3 Auto Changeover Cooling / Dry Operation..........................................................

3-2-4 Custom auto Heating / Cooling Operation ..........................................................

3-2-5 "COOL" Position..................................................................................................

3-2-6 "HEAT" Position..................................................................................................

3-3 LOUVER CONTROL..................................................................................................

3-4 ELECTRONIC EXPANSION VALVE CONTROL......................................................

3-5 DRAIN PUMP OPERATION.......................................................................................

3-6 FUNCTION..................................................................................................................

3-6-1 Auto Restart.........................................................................................................

3-6-2 Freeze Prevention Control...................................................................................

3-6-3 Oil Recovery Operation / Defrost Operation .......................................................

3-6-4 Outdoor temperature protected operation for Outdoor air unit ............................

3-7 RB UNIT COMPONENT.............................................................................................

3-7-1 Position of Solenoid coil.......................................................................................

3-7-2 Position of Solenoid valve.................................................................................... 03-13

3-7-3 PCBs layout......................................................................................................... 03-14

3-7-4 PCB component.................................................................................................. 03-14

3-7-5 Solenoid Valve controlling................................................................................... 03-15

3-7-6 Refrigerant Flow.................................................................................................. 03-15

03-02 03-04 03-05

03-06 03-07

03-07

03-08

03-11 03-11 03-12 03-12 03-12 03-12 03-12

03-13 03-13

+1

4. TROUBLE SHOOTING

CONTENTS

4-1 NORMAL OPERATION..............................................................................................

4-1-1 Indoor Unit Display..............................................................................................

4-1-2 Outdoor Unit Display...........................................................................................

4-2 ABNORMAL OPERATION.........................................................................................

4-2-1 Error code Display..............................................................................................

4-2-2 Indoor Unit Display..............................................................................................

4-2-3 Outdoor Unit Display...........................................................................................

4-2-4 Remote Controller Display...................................................................................

4-2-5 Trouble shooting index - Error code List -...........................................................

4-2-6 Trouble shooting index - No Error code - ...........................................................

4-2-7 Trouble level of system........................................................................................

4-2-8 Error History mode...............................................................................................

4-2-9 Trouble shooting with Error code.........................................................................

4-2-10 Trouble shooting No Error code........................................................................

4-3 SERVICE INFORMATION -Network communication abnormal - - RB unit Abnormal -............ 04-89

4-4 SERVICE INFORMATION......................................................................................... 04-91

4-4-1 Back up operation ..............................................................................................

4-2-2 Work procedure after the backup operation..........................................................

4-5 SERVICE PARTS INFORMATION............................................................................. 04-98

04-01 04-01

04-02

04-03

04-04 04-04

04-05 04-06

04-07 04-08

04-09 04-10

04-81

04-91 04-93

5. APPENDING DATA

5-1 REFRIGERANT CIRCUIT..........................................................................................

5-2 WIRING DIAGRAM....................................................................................................

5-2-1 Indoor Unit............................................................................................................

5-2-2 Outdoor Unit.........................................................................................................

5-2-3 RB Unit.................................................................................................................

5-2-4 Outdoor Air Unit....................................................................................................

5-2-5 Vertical Air Handler...............................................................................................

6. DISASSEMBLY PROCESS

05-01

05-05

05-14

05-15

05-18 05-20

1. TEST RUN

1-1 EXECUTION PROCEDURE AND EXECUTION PRECAUTIONS

Before execution

Execution zone decision

Confirmation of refrigerant used

Preparation of execution drawings

Confirmation of installation site

Preparations before execution

Execution

Sleeve and insert work

Indoor unit installation

Refrigerant piping work

Drain piping work

Duct work

Heat insulation work

Electrical work

Foundation work for products

Execution procedure and precautions Reason

Check the characteristics of the refrigerant used and grasp the

1

special features of the refrigerant. If refrigerant must be charged, always charge the refrigerant specified for the product. Confirm the product design pressure.

2

R410A 609psi (4.20MPa)

Use new refrigerant piping of the thickness specified by the

1

D&T manual. Since R410A dedicated tools are necessary, prepare them

2

in advance. Absolutely avoid use of existing piping. If use of existing

3

piping is unavoidable, the piping must be cleaned.

Always use a level and keep the indoor unit level. If the equipment is tilted toward the drain port, install it so that the tilt is within 10mm. Excessive tilt will cause water leakage.

When performing piping work, observe the following items so that the inside of the piping is clean and air tight.

Use pipe that is not dirty inside.

1

When the pipe is left standing, protect it.

2

Finish flaring exactly.

3

Confirm the width across flats dimension and shape of flare nuts.

4

Always blow nitrogen while brazing.

5

Perform flushing before connecting the equipment.

6

Always make the downward slope of the drain pipe 1/100 or

1

greater and make the horizontal length within 66ft.(20m). Use hard polyvinylchloride pipe as the drain pipe.

2

Support the drain pipe between

3

Use pipe of 1 rank up (VP30 or greater) as central piping.

4

Select the size of the heat insulating material according to the ambient temperature and relative humidity of the refrigerant. Use a heat insulating material having a heat conductivity of 0.043W/

.

(m

k) or less.

59-1/16 in(1.5m) to 6-3/4 in ( 2.0m).

Use of a refrigerant other than the specified refrigerant will invite equipment trouble.

Secure the necessary pressure resistance.

Prevention of water leakage

Foreign matter, water, etc. in the piping will cause faulty cooling and compressor trouble. Refrigerant leakage will cause low performance and abnormal stopping.

Prevention of water leakage

Products installation work

*Refer to warning or caution in the attached installation manual of each products

Refrigerant piping connection work

Air tightness test

Vacuum drying

When making flare connections always use a torque wrench and tighten the flare nut positively to the specified torque.

Pressurize the product with nitrogen gas up to the design pressure and conduct a 24Hr air tightness test.

1

2

3

*

Refrigerant leakage will cause low performance and abnormal stopping.

Install a vacuum pump with reverse flow check mechanism or a reverse flow check adaptor to a conventional vacuum pump and use. Pump down sufficiently. Approximately 1 hour or longer after Allow to stand for approximately 1 hour after stopping the vacuum pump and confirm that the needle does not return. Air purging using refrigerant is strictly prohibited.

500 micron (-100.7kPa) reached.

Mixing in of vacuum pump oil by reverse flow will cause equipment trouble.

Prevents degradation of the oil by completely removing water and air.

recommend the vacuuming

*

mode

Vacuuming mode

This function is used for vacuuming the indoor unit and the connection piping.

Note: For starting Vacuuming mode, the refrigerant address setting has to be finished.

When the [vacuuming mode] is set, <Push switch setting, F3:21> EEV of connected all indoor units opens. So, the vacuuming indoor unit and piping becomes easier.

When the vacuuming ends, please turn off the power supply for all of the indoor units, RB units and outdoor unit, [vacuuming mode] is released.

01-01

Execution

Addition refrigerant charging

Gas leak test

Pre-commisioning

"Before Power ON"

Pre-commisioning

"After Power ON"

Confirm the additional refrigerant amount with the installation

1

manual, etc. Always take the R410A refrigerant from the cylinder liquid phase

2

and charge it using the gas phase. (Do not lay a cylinder with siphon pipe on its side.)

3

Use an R410A dedicated gauge manifold and charging hose.

Use an R410A dedicated leak tester to check for gas leaks.

Power source installation inspection

1

Field setting and setting inspection

2

Transmission wire installation inspection

3

Piping installation inspection

4

Connect Service Tool

1

Power source inspection

2

Error indication inspection

3

Transmission wire connection inspection

4

Other Field setting with power ON state, and adjustment

If taken from the air phase, since the composition of the refrigerant which is charged will change, low performance and abnormal stop will occur easily. Prevent erroneous sealing in of refrigerant.

A leak tester for other than R410A cannot detect leaks.

Before starting the installed system, the final inspection is necessary. When you find out any incorrect install ation or wrong setting, revise it before starting the system

When you see any abnormal things, turn OFF the power supply first, and revise it with power OFF state.

In case of "Auto Address setting"

Note :

Test run & adjustment

Handover & explanation of operation

Check operating condition by using service tool. For the judgment of operating condition, refer to the operation check sheet.

Perform the auto address setting of Signal amp. at first, and the next perform the auto address setting of indoor unit. When you perform the autoaddress setting for RB unit, the indoor unit address setting needs to be done at first.

When you see any abnormal things, stop the system, and revise it with power OFF state.

01-02

1-2 Check Items Before Power ON

1-2-1 Power source Inspection sheet

Check Item Check contents Judgement Present Status

Ref. circuit name: _________________

Power supply 3 / 3W / (208-230V 10%) / 60Hz

Master (AJUA ___G) :_____(A) For AJUA72G : 45A For AJUA90G / 120G : 55A

Leakage current : 100mA, 0.1 sec or less

Check the breaker capacity vs. wire size

Example :

Slave-1(AJUA ___G) :_____(A)

Slave-2(AJUA ___G) :_____(A)

Yes / No

Master : ______ (AWG)

Slave-1: ______ (AWG)

Slave- 2: ______ (AWG)

Complied

Not complied

Power

Source

Outdoor

Unit

Circuit Breaker Size (A)

2

Power Line Wire Size (mm

)

Power line Wiring

Note: One Outdoor Unit must have

one individual Circuit Breaker

* Note: Regulation of wire size and circuit breaker differs from each locality, please refers in accordance with local rule

Check Item Check contents Judgement Present Status

Ref. circuit name: _________________

Power

Source

Indoor Unit &

RB Unit

Power supply

Circuit Breaker Size (A)

(Check, Leakage current vs.

number of IUs & RB units)

1

/ (208-230V 10%) / 60Hz

20A breaker for one circuit

Leakage current as follows:

No. of units vs. leakage current:

30mA for number of unit 44 units 100mA f or 45 numberr of units 128 units

(Units means Indoor unit + RB unit)

Note: MCA for total connected units (IU + RB) less

Circuit num ber -1

Breaker capacity: _______ (A)

Nos. of Connected units: ______ (IU+RB)

Circuit num ber -2

Breaker capacity: ______ (A)

Nos. of connected units: _______ (IU+RB)

Circuit num ber -3

Breaker capacity: _______ (A)

Nos. of Connected units

than 15A for 20A breaker capacity

MCA means, minimum circuit ampere

Power line wire size

Power line wiring

1 2W

60Hz 230V

Circut breaker Circuit breaker Earth lekage Over current

Check the breaker capacity vs. wire size

Example for one circuit

For (IU + RB units) 19 units

Complied

Not complied

: _______ (IU+RB)

________ (AWG)

* Note: Regulation of wire size and circuit breaker differs from each locality, please refers in accordance with local rule

01-03

1-2-2 Outdoor unit field setting inspection sheet

Check Item Check contents Judgement

No. of outdoor unit for one ref. circuit: ______, Ref. circuit name: _________________

Appearance Shall be no deformation

Serial No. Master: Slave -1: Slave -2 :

Outlook

Power source & transmission wiring Connection points & loosescrews check

Connection piping Is it insulated properly without gap?

Outdoor air temperature Checked& entered the value

DIP-SW setting

OU Address (SET 3-1 & SET 3 - 2)

Note: setting forMaster & Slave units

(Default : OFF - OFF)

Outdoor

Unit

No. of Slave Unit (SET 3- 3 & SET 3 - 4)

Note: setting for Master unit only

SET-3

SET-5

(Default : OFF- OFF)

Setting

REF-AD

No. of OU (SET 5 - 1 & SET 5 -2)

Note: setting for Master & Slave units

(Default : OFF- OFF)

x10 x1

Rot ary-SW setting

Terminal Register(SET 5 -4)

Note : setting for Master units

Ref. Add. (among Master & Slave units) Ref ADx10 & Ref ADx1

Master (OFF - OFF)

Slave-1 (OFF - ON)

Slave-2 (ON - OFF)

NO Slave (OFF- OFF)

1 x Slave (OFF- ON)

2 x Slave (ON - OFF)

1 x OU (OFF - OFF)

2xOU(OFF- ON)

3 x OU (ON - OFF)

OFF or ON (Default : OFF)

Present

Status

OK / NG

( )

Y/ N

1-2-3 Indoor unit field setting inspection sheet

Check contents

Ref. circuit name: _________________, Ref. address: ____ (00

Model

Name &

Serial

No.

type units)

Y/

N

Y/

N

Y/

N

RC wiring connection points:

(loose / deform)

Y/

N

Y/

N

Y/

N

Access hole for maintenance

Outlook Function setting by DIP-SW (Off / On) Add. Setting (by Rotary-SW)

(For Duct type & Cassette

Refrigerant pipes insulation

Y/

N

Y/

N

Y/

N

Drain pipes installation

(default:

2 wire)

Y/

N

Y/

N

Y/

N

Wired RC setting (DIP SW

2 wire /

3 wire

1

)

Y/

N

Y/

N

Y/

N

External Input (edge/pulse)

SET

2

( default: OFF )

Y/

N

Y/

N

Y/

N

SET

( default: OFF )

3

1

Y/

N

Y/

N

Y/

N

99)

Wireless RC custom code

SW

SET

( default: OFF )

Wireless RC custom code

SW

1

Y/

N

Y/

N

Y/

N

2

3

2

Drain Pump SW (for Slim duct)

SET

( default: OFF )

4

1

Y/

N

Y/

N

Y/

N

(REF AD x

10

)

(REF AD x

Ref. Add.

1 )

Ref. Add.

(IU AD x

10

)

(IU AD x

IU Add.

1

)

IU Add.

Ref . Add.

RC Add

RC Add.

(RC AD)

Y/

N

Y/

N

Y/

N

Y/

N

Y/

N

Y/

N

01-04

Y/

N

Y/

N

Y/

N

1-2-4 RB unit field setting Inspection sheet

RB Unit Check contents

Ref. circuit name: _________________, Ref. address :__(00

Outlook

Transmission & Power

line wiring connection

terminal

(Loose / Tilting )

Access hole for

maintenance

( Have / Not have )

Model Name

RB unit (single type) Indoor units / Branch Total capacity

UTP- RU01AH Maximum 3 uni ts 8.0 kW or less

UTP- RU01BH

UTP- RU01CH 28.0 kW or less

Maximum 8 units

RB unit Add. set by Rotary-SW

Refrigerant piping

insulation

Ref. Add.

(REF AD x

10

)

Ref. Add.

18.0 kW or less

Ref. Add.

(REF AD x

1 )

99)

(IU AD x

RB Add.

(IU AD x

10

)

RB Add.

(multi type)

UTP-RU04BH

RB unit

1

)

RB Add.

Related Indoor Unit Address

Number of

RB units

1 unit

2 units series

No. of connected IU vs. total capacity

For single type

RB unit

Number of

Connected IUs

connected IUs

Indoor unit

/ Branch

Maximum

8 units

For multi type RB unit

(single / series connection)

Total capacity

(kW) of the

Each Branch Total

Up to 18.0kW Up to 56.0kW

Number of

Connected IUs

Capacity

the connected IUs

Total capacity

(kW) of

Single type RB unit

PC board (Upper side)

DIP switch

SET1

DIP switch

SET2

REF × 1

× 10

SV connector

Rotary switch

× 10

RB × 1

Power indicator lamp (Green)

Error indicator lamp (Red)

Power indicator lamp (Green)

Multi type RB unit

PC board (Upper side)

SV connector

DIP switch

SET1

DIP switch

SET2

RB × 1

× 10

REF × 1

× 10

01-05

1-2-5 Transmission wire installation inspection sheet 1/3

Check Item Check contents Judgement Present Status

Number of ref. circuit connected in the network system: ______, Ref. addresses: ______________(00 - 99)

VRF Network System

Transmission wire

Transmission line connection points

Outlook

Wire specification 0.33mm

For cooling only IU

Between RB unit & IU

For Heat Recovery IU

Between RB unit & IU

Is it LonWorks compatible?

Maker name?

2

, shield wire

Must be properly connected (Between RB unit & IU) RB unit

Tterminal (OUT/U) : X1, X2, Earth

IU Terminal (IN/U) : X1, X2, Earth

Must be properly connected (Between RB unit & IU)

RB unit Tterm ina l (I N/U) : X1, X2 , Earth

IU Termina l (IN/U) : X1, X2, Ea rth

Yes / No

(AWG)

Yes / No

Between RB unit & Master OU

Between Master OUs

Between Master OU &

Slave OU or

Must be properly connected RB unit Terminal (OUT/U) : X1, X2, Earth

Master OU

Terminal (RB/U) : X1, X2, Earth

Must be properly connected (Between Master OUs) Master OUs

Terminal: Z1 & Z2

Must be properly c onne cted (Between Master OU and Slave OU / Slave OU and Slave OU )

In between Salve OUs

Shield wire connection

Both ends of shield wire must be grounded

Wiring connection Wiring connection per terminal (

(Between RB unit & Master OU)

Terminal: H1 & H2

2)

Check Item Check contents Judgement Present Status

Number of ref. circuit connected in the network system: ______, Ref. addresses: ______________(00

Correct Layout

Transmission line layout

OU

RB

(Between RB unit & IU)

Reference: (Piping Layout)

Not Correct Layout Example

-1

OU

IU

RB Gr.

RB

IU

RB Gr.

RB

IU

99)

Correct

Not correct

If not correct, pls. rectify the connection

Yes / No

Transmission line

Reference:

From outdoor unit

RB

To indoor unit

OU

RB

Not Correct Layout

IU

Example - 2

IU

Not Correct Layout

Example

-3

OU

RB

IU

RB

IU

RB

IU

01-06

1-2-5 Transmission wire installation inspection sheet 2/3

Check Item Check contents Judgement Present Status

Number of ref. circuit connected in the network system: ______, Ref. addresses: ______________(00

Transmission line

Reference:

From outdoor unit

RB

To indoor unit

Transmission line layout

(Between RB unit & IU)

Reference: (Piping Layout)

OU

RB

IU

Correct Layout

Not Correct Layout

Example - 1

Not Correct Layout

Example - 2

Not Correct Layout

Example - 3

Not Correct Layout

Example - 4

OU

RB

IU

RB Gr.

RB

IU

RB

IU

RB

IU

RB

IU

RB

IU

RB Gr.

RB

IU

If not correct, pls.

IU

rectify the connection

99)

Correct

Not correct

Check Item Check contents Judgement Present Status

Number of ref. circuit connected in the network system: ______, Ref. addresses:_______________(00 99)

VRF Network System

Network wiring

Total transmission line length

Network wiring layout

No. of network segment

( * 1 )

Create one Network Segment based on the following conditions,

Wiring length

(Value taken from Network Design Drawing)

Do not make a loop configuration Looped / Notlooped

( * 1 )

No. of network segment 41

11811ft.(3600m)

Condition -1: if the transmission line length 1640ft.(500m)

Condition -2: if a total number of connected units

( * 2)

connected units mean a total of (Indoor Units + Master Outdoor Units + RB Units

Netwo rk Convertor f or LonWo rks Unit + Central RC Units + Netwo rk Co nv erto r Units +

BACnet Gateway Unit + Signal Amplifier Units + Service Tool Unit + Web Monitoring Tool Unit)

*

( 3)

f or s ing le ty pe RB Unit, c ount as ‘0’, f or multiple type RB Unit, when all port s are co nnected with Indo or Unit, count as ‘0’.

However, if one of the port of the multiple type RB Unit is not connected with Indoor Unit, at that time count as one RB Unit.

64 connected units

( * 2 )

( * 3)

+ TPC Uni ts + S ys tem Controller Units

(m)

01-07

1-2-5 Transmission wire installation inspection sheet 3/3

Check Item Check contents Judgement Present Status

Number of ref. circuit connected in the network system : ______, Ref. addresses :_______ _______________(00

VRF Network System

Network Configuration

No. of IUs & OUs

No. of System Controller

No. of Touch panel controller (TPC)

No. of Central RC (CRC)

No. of Network Convert for Group RC

No. of Signal Amplifier (SA) 40

Detail contents:

No. of SA (filter mode OFF) 8 No . of SA (f ilter m ode ON ) 32

No. of Network Convertor ( 100)

No. of BACnet Gateway

Terminal Register

No. of Network Convertor for LonWorks

For one VRF Network System

(IU

400 & OU 100)

One System Controller per VRF Network System

Connectable Nos. 16

Connectable Nos. 64

One per 1640ft.(500m) t ra nsmission line length OR, One per 1312ft.(400m) transmission line length

between units OR, One per every 64 number of connected units OR, One per every master OU if total number of

connected Indoor Units

One for each separate Room Air- conditioning system Total:_______

One BACnet Gateway per VRF Network System Total: _______

One per Network Segment (refer to table -9) Total: _______

One per VRF Network System (IU 128 & OU 100)

NOTE: Special VRF Network system configuration

Total 16 Nos.

Per VRF Network System

(including one Network

Converter for LonWorks)

320

IU number : _____

OU number: _____

TPC: _____

CRC: ______

Group RC: _____

Num be r of Signa l Amplifier :________

IU number : _____

OU number: _____

99)

Check Item Check contents Judgement Present Status

Number of ref. circuit connected in the network system : ______, Ref. addresses :_______________________(00

Terminal resistance of transmission line: From device with connected terminal resistance (OU or SA) to the most distance device

50 ohm ( Resistance value) 180 ohm

OK / Not OK In- between OU (add__ __) & SA (ad d___)

OK / Not OK In- between SA (add____) & RB (add___)

OK / Not OK

VRF Network System

Terminal Resistance of transmission line

In- between OU (add__ __) & SA (ad d___)

99)

01-08

1-2-6 Piping installation inspection sheet 1/2

Check Item Check contents Judgement Present Status

Ref. circuit name : _________________________________, Ref. address: ______________ (00

Insulation & Fastening Insulated without gap & properly fastened (Yes / No)

Outlook

Suction line filter Is there any external filter in the suction line

Oil Trap If Distance between OUs 2m ,

Place oil trap both at suction & at Discharge line

541ft./165m) (feet)

197ft./60m) (feet)

3280ft./1000m) (feet)

Refrigerant system piping

Actual Pipe Length

Between Master OU and farthest IU (

Between first separation tube and farthest IU (

Total Pipe Length (

Between OU and OU branch kit (

Between farthest OU and first OU branch kit (

Between RB units (for multi type RB series connection) ( 3ft./1m) (feet)

Piping

Between OU and IU (when OU is installed above) ( 164ft./50m) (feet)

Between OU and IU (when OU is installed below) ( 131ft./40m) (feet)

Between IUs (

49ft./15m) (feet)

Height Difference

Between OUs (

Between RB units (

1.6ft./0.5m) (feet)

49ft./15m) (feet)

Between RB unit and IU (

99)

Yes / No

Not applicable

9ft./3m) (feet)

39ft./12m) (feet)

16ft./5m) (feet)

Other check point of separation tube

Bending of connection pipe toward separation tube.

( 3° )

0 to 26 mm

( 3° )

0 to 26 mm

Like the figure, adjust the pipe angle so as to be within 3-degree angle.

Connection pipe

19-11/16in. (0.5m)

Separation tube

to Outdoor unit

to RB unit or Indoor unit (To main pipe

19-11/16in.(0.5m) or more

Leave the distance 19-11/16in.(0.5m) or more for straight part to outdoor unit branch kit.

to Outdoor unit

19-11/16in.(0.5m) or more

to Outdoor unit

Check Item Check contents Judgement Present Status

Ref. circuit name: ____________________________________, Ref. address: _____(00

Existence of additional RB in between RB branch port and indoor

unit is prohibited

For single type & multi type RB Units

Piping layout (Between RB & IU)

For single type RB unit

99)

For multi type RB unit

Correct

Not correct

For multi type RB Unit

Branch port piping layout (RB branch port vs. IU connection pattern)

1) Number of free branch port more than one is p rohibited Correct

Not correct

1 free blanch

2 free branch

3 free branch

01-09

1-2-6 Piping installation inspection sheet 2/2

Check Item Check contents Judgement Present Status

Ref. circuit name: _______________________________________, Ref. address:

2)

Connect the IU to the RB unit in order of farthest branch port Correct

Keep free branch port within 2 or less per refrigerant cycle Correct

For multi type RB Unit

Branch port piping layout (RB branch port vs. IU connection pattern)

One refrigerat ion cy cle

1stnot used port

2ndnot used port

3rdnot used port

(

(00 99)

Not correct

Check Item Check contents Judgement Present Status

Ref. circuit name: _______________________________________, Ref. address:

Maximum two RB units (for multi type) in series is allowable Correct

within 1m

(

(00 99)

Not correct

For multi type RB Unit

RB series connection

within 1m

01-10

1-2-7 Refrigerant charge amount inspection sheet

Check Item Check contents Judgement Present Status

Ref. circuit name: ____________________________, Ref. address :________(00

OU Model Name Additional Refrigerant Amount for OU

99)

Outdoor Unit

AJUA72G / AJUA90G / AJUA120G AJ*A72G / AJ*A90G / AJ*108G : 6.31lbs / 3.0kg

Liquid Pipe Length Additional Refrigerant Amount based on the li quid pipe leng th

Additional Charged Refrigerant

Connecting

Pipe

@ 6.35mm (ft)

@ 9.52mm (ft)

@ 12.7mm (ft)

@ 15.88mm (ft)

@ 19.05mm (ft)

For pipe diameter 6.35mm : 0.014 lbs./ft.(0.021 kg/m)

For pipe diameter 9.52m m : 0.039 lbs./ft.(0.058 kg/m)

For pipe dia meter 12.7mm : 0.077 lbs./ft.(0.114 kg/m)

For pipe dia meter 15.88mm:0.120 lbs./ft.(0.178 kg/m)

For pipe dia meter 19.05mm :0.180 lbs./ft.(0.268 kg/m)

Total Additional Amount of Charged Refrigerant =

Note: In the refrigerant system, overall refrigerant amount 77.16 lbs / 35 kg / (for 1 OU), 154.3 lb / 70kg (for 2 OUs) and

231.5 lbs / 105 kg (for 3 OUs)

Overall refrigerant amount (kg) in the refrigerant system = Factory charged refrigerant (lb/kg) for OU

charged refrigerant (lb/kg)

= Add itional charged refrigerant for OU +

+ Total additional amount of

Additional charged refrigerant for connecting pipe

Factory charged refrigerant for outdoor unit : AJUA72G or AJUA90G or AJUA120G : 26.01lbs.11.8(kg)

(kg)

(lbs)

1-2-8 3-way valve opening inspection sheet

Check Item Check contents Judgement Present Status

Ref. circuit name: ____________________________, Ref. address :________(00

Master OU ( all 3-way valve must be full open )

Slave-1 OU ( all 3-way valve must be full open )

Slave-2 OU ( all 3-way valve must be full open )

Outdoor Unit

3-way valves

opening

3-way valve of each OU at

- Discharge pipe side

- Suction pipe side

- Liquid pipe side

99)

Yes / No

01-11

1-3 Check Items After Power ON

Overview of system operation check procedure

Step-1: Connect Service Tool PC to the VRF VR-II system.

Do scaning of refrigerant system which should be commissioned.

Step-2: Compare the number of installed units (OU, RB Group and IU) with the System List data obtained from the Service Tool.

Step-3: Operate all Indoor Units under Test Mode Cooling (Select Test mode either cool or heat based on ambient temperature.).

Step-3-1: During operation, check the RB unit SV status and IU thermistor value Step-3-2: After 1-hour operation, check the Refrigerant System

Step-4: After 1-hour Test run operation (excluding special operation), Step-4-1: Switching the operation mode of IU, in order of RB group number, from cool to heat.

- Check the RB unit SV status and IU thermistor value Step-4-2: When all IUs run under heating, continue operation minimum 15min. And check the Refrigerant system

1-3-1 Power source check sheet

Check Item Check contents Judgement Present Status

Ref. circuit name _______________________, Ref. address ________(00

Actual Power Supply (V)

Outdoor Unit

Between L1-L2 / L1-L3 / L2-L3

< 3N, 3Wire + ground, 60Hz >

AC (208 - 230V)

Incoming voltage per breaker

10%

Power

Source

Indoor Unit

&

RB Unit

Actual Power Supply (V)

< 1, 2Wire + ground, 60Hz >

AC (208 - 230V) 10%

Incoming voltage per breaker

1-3-2 Error indication check sheet 1/2

Check Contents Judgement Present Status

Ref. circuit name ________________________, Ref. address ________(00

Outdo or unit Check PCB- Lighting status

LE D1 01 (green li ght)

Judgment : mu st be ON

Note : LED102 (Red) must not be flash & must not be ON

7-SEG LED

Judgment : ‘Sn’ displayed

Indoor Unit

For Wall mounted, Universal, Celling & Small Cassette

Check IU operation LED & timer LED condition

Judgment : must be flashing alternately

For Large Cassette and Duct type IU

Check Wired RC (3- wire) display screen

Judgmen t : C lock dis pla y “ AM 12: 00” will ap pe a r

Check Wired RC (2-wire) display screen

Judgmen t : La n gu a ge selec tion sc ree n will a ppe a r

For each refrigerant system

Master

Slav e -1

Slav e -2

Indoor unit Check LED & RC display status

IU address _______ (RB a ddress ________ )

IU address _______ (RB address ________ )

IU address _______ (RB a ddress ________ )

IU address _______ (RB address ________ )

99)

Master (V): R-S:_____ / S-T:____ / T-R:____

Slave -1 (V): R-S:_____ / S-T:____ / T-R:____

Slave -2 (V): R-S:_____ / S-T:____ / T-R:____

Breaker-1 (V): _______

Breaker-2 (V): _______

Breaker-3 (V): _______

_______

99)

LED101: Yes No

Yes / No

7-S EG :

LED101: Yes No 7-S EG :

Yes No

01-12

1-3-2 Error indication check sheet 2/2

Check Contents Judgement Present Status

Ref. circuit name ________________________, Ref. address ________(00

RB unit & respectiv e IU address (Desig n Value) Check RB unit PCB-LED status

RB address _______ (IU address _____________)

LED1 (Green )

Judgment :

Note: LED2 (Red) of R B u n it must not be ON

For each refrigerant system

RB address _______ (IU address _____________)

1-3-3 Installed unit and their addresses check sheet

99)

mu st be ON

Yes / No

Yes No

Check Contents Check items Checking method Judgement Present Status

Ref. circuit : Name _________________, Ref. address ________(select from 00 to 99) Design value Check status

Installed units and their addresses check

Number of IU

IU address

Number of RB unit

RB unit address

Checked by

Service Tool

Number of units and their

address appeared in the

System List must be same

as the Actual Design value

Judgment:

(OK / Not OK)

Connected number of IU ______

Connected number of RB Gr. ___

IU add _____ (RB a dd ____ )

IU add

_____ (RB a dd ____ )

IU add _____ (RB a dd ____ )

OK

Not OK

OK

Not OK

01-13

1-3-4 Transmission line connection check sheet

Note: The following check method by using test-run is necessary for checking of incorrect transmission wire connection.

Check Contents Check items Checking method Judgement Present Status

Ref. circuit : Name _________________, Ref. address ________(select from 00 to 99)

Judgment Point during

test - mode cooling :

Transmission line

connection co nfirmation check

Cooling status

Operate all Indoor

Units under Test-run

Cooling Mode by

using Commissioning

Function of Service

Tool

For In door Unit

- Thermist or v a lue

(TH21 - TH22)14.4 F 8

(Yes / No)

For RB Un it

-SV status

SVB1 & SVS mu st ON

(Yes / No)

Desi gn value

IU add _____ (RB add ____)

IU add_____ (RB a dd ____)

Check sta tus

IU RB

Yes / No Yes / No

Check Contents Check items Checking method Judgement Present Status

Ref. circuit : Name _________________, Ref. address ________(select from 00 to 99)

Judgment Point after switching IU mode from

cool to heat in order of

Transmission line

connection

co nfirmation

Heating status

Switching the operation of IU

from cool to hea t in order of RB

group number by using,

Control function of Service Tool

RB group number:

For Indoor Unit

- Thermist or v a lue

(TH24 > TH21)

(Yes / No)

IU add _____ (RB a dd ____)

IU add _____ (RB add ____)

Desi gn value

Check status

IU

Ye s / No

01-14

1-3-5 Operation check sheet

Check Contents Judgement Present Status

Refrigerant Circuit : Name _________________, Address ________(00

Degree of sub-cool at OU sub - cooler side should be,

9 F TSC 36 F(5 C Tsc 20 C) AND

Pulse value EEV3 should be,

EEV3 400P

Discharge refrigerant pressure should be,

Test-run operation

Cooling mode

363psi Pd 479psi(

2.5MPa Pd 3.3MPa)

Suction refrigerant pressure should be,

102psi Ps 174psi(

0.7MPa Ps 1.2MPa)

Discharge refrigerant temp. should be,

Td 212 F(100 C).And,

Discharge refrigerant superheat should be, ( Tshd >18 F(10 C)

Conducted by

Service Tool

IU refg. superheat should be, (2 C Tshe 5 C).And,

(3.6 F Tshe 9 F)

RB group SV (SBS & SVB1) should be ON AND Pulse value IU EEV should be, EEV 1000P

Ps between Master & Slave OUs should be,

( Ps 29psi(0.2Mpa))

Air temperature of each RB group IU should be,

Tair c ooling

14.4 F(8 C)

>

99)

Tsc

F( C)

EEV3 P

Pd Psi(MPa)

Ps Psi(MPa)

Td

Tshd

Tshe

SBS & SVB1 ON

F( C)

IU EEV P

Ps Psi(MPa)

Tair c ooling

F( C)

Yes / No

No water fall from IU No abnormal noise from IU

Reference mark of Service tool

Tsc = Saturated liquid temperature of HPS - TH5

Tshd = TH1- Saturated liquid temperature of HPS

Tshe = TH24 - TH22 Tair c ooling = TH21 - Outlet Air temperature

Check Contents Judgement Present Status

Refrigerant Circuit : Name _________________, Address ________(00

Discharge refrigerant pressure should be,

363psi Pd 479psi (2.5MPa Pd 3.3MPa)

Suction refrigerant pressure should be,

Test-run operation

Heating mode

44psi Ps 174psi (0.3MPa Ps 1.2MPa)

Discharge refrigerant temperature should be,

Td 212 F (100 C) AND

Discharge refrigerant superheat should be,

Tshd > 18 F(10 C)

7.2 F 12.6 F

Conducted by

Service Tool

Degree of sub

(4

cool (at IU side) should be,

Tsc 7 ) AND

RB group SV (SBD1 & SVB2) should be ON

Refrigerant superheat (at OU side) should be,

3.6 F Tshe1& Tshe2 9 F(2 C Tshe1& Tshe2 5 C)

Td = TH1

99)

Tsc

Ye s / No

Pd = HPS Ps = LPS

Pd Psi(MPa)

Ps Psi(MPa)

Td

Tshd

Tsc

SVD1 & SVB2 ON

Tshe

F( C)

Yes / No

Reference mark of Service tool

Tsc = Saturated liquid temperature of HPS - TH22 Tshd = TH1- Saturated liquid temperature of HPS Tair heating = TH21 - Outlet Air temperature

Pd between Master & Slave OUs should be,

Ps 29psi (0.2MPa))

T

at each OU connected in series should be,

OUHE

TOUHE>9 F(5 C)

Air temperature of each RB group IU should be,

Tair heating > 27 F (15 C)

Tshe1 = TH7 - Saturated vapor temperature of LPS

Tshe2 = TH8 - Saturated vapor temperature of LPS

01-15

Ps Psi(MPa)

TOUHE

Tair heating

F( C)

T = TH4 - TH9

OUHE 1

T = TH4 - TH10

OUHE 2

Yes / No

1-4 Test Run Operation

1-4-1 Test Run From Outdoor unit PC Board

All the indoor units connected to the outdoor unit can be test-operated by push button setting. (Only for master unit)

SWITCH POSITION

POWER

MODE

ERROR

LED101

(GREEN)

LED102

(RED)

7 Segment LED Lamp

LED105 LED104

MODE

/EXIT

SELECT ENTER

Push button switch

Outdoor unit printed circuit board

SW107 SW108 SW109

TEST RUN SETTING

For a detailed description of push button operation, refer to the [D&T manual Chapter 6. SYSTEM DESIGN]

< Monitoring condition >

LED105 LED104

(1) Press the MODE / EXIT button ( SW107 ) once.

< Mode select condition >

[ Monitoring mode ] [ Setting mode ] [ Error history mode ]

(2)Press SELECT button

LED105 LED104LED105 LED104 LED105 LED104LED105 LED104

[ Function mode ]

(3) Press the ENTER button ( SW109 )

< Fuction select condition >

[ Cooling test run ]

LED105 LED104

(4)Press SELECT button

(5) Hold down the ENTER button ( SW109 ) for at least 3 seconds.

< Pursuance completion >

LED105 LED104

(6) Press the ENTER button ( SW109 ) or Time out ( 5 seconds)

< Return to mode select condition >

LED105 LED104

(7) Press the MODE / EXIT button

[ Heating test run ]

LED105 LED104

< Return to monitoring condition >

LED105 LED104

[ Test run stop ]

LED105 LED104

example, Normal indicate : [ Cooling mode ]

[ Central control setting Forced reset ]

LED105 LED104

01-16

1-4-2 Test Run From Remote Controller

1. Standard wired remote controller

Stop the indoor unit. Push the button and button simultaneously for more than two seconds. The air conditioner will start to conduct a test run and " " will display on the remote controller display. However, the , setting button does not have function, but all other buttons, displays, and protection functions will operate.

Perform the test operation for 60 minutes.

To stop test run, push the START / STOP button of the standard wired remote controller. For the operation method, refer to the operating manual and perform operation check. Check that there are no abnormal sounds or vibration sounds during test run operation.

UTY - RNK

SET TEMP.

TIMER MODE DAY

SET BACK

DAY OFF

CLOCK ADJUST

TIMER DELETE TIMER SET

START / STOP

FAN MO DE

2. Standard wireless remote controller

Short two metal contacts under the battery compartment lid, while the air conditioner is running. To stop test run operation, push button of the wireless

remote controller. When the air conditioner is being test run, the OPERATION and TIMER lamps of indoor unit flash slowly at the same time.

3. Simple remote controller

Stop the indoor and outdoor units. Push the remote controller simultaneously for more than three seconds. The air conditioner will start to conduct a test run and " " will display on the temperature display. However the setting button does not have function but all other buttons, displays and protection functions will operate.

button and

button

START/STOP button

Test run button

UTY - LNH

ON OFF

ECONOMY

FILTER RESET

SET

TEMP.

SLEEP

TIMER

TIMER MODE

CLOCK

TEST

ADJUST

RUN

UTY - RSK

FANMODE

SET

SWING

RESET

To stop test running press the button of the simple remote controller. For the operation method refer to the operating manual and perform operation check. Check that there are no abnormal sounds or vibration sounds during test run operation.

01-17

SET

4. Touch panel controller

(1) Select the objective you want to test run. Select the objective icon or list at the monitor screen. (Multiple selections is possible) Select all the devices registered as objectives by pressing "Select All" on the monitor screen. (2) After objective selection at (1), switch to the <Setting screen> by pressing "Operation". (3) Switch to the <Detail setting screen > by pressing "Optional setting" on the setting screen, (4) Press "Start" button and OK on the details setting screen.

Test run continues for 60 minutes. To interrupt test run, select the device being the test run and excute an operation stop. At the monitor screen, test run can cancel by selecting objective device and press OFF.

UTY - DTG

Operation Setting

Control Unit :

operation

On

Off

Air Flow Direction Economy Anti Freeze Filter Sign Test Operation

Optional

Setting

Cancel

Meeting Room

Mode Set Temp. Fan

Auto

24.0 C

Cool

Dry

Fan

Heat

Operation Controlled

10/11.2008.Mar. 02:20 PM

R/C Prohibition

All

Auto

High

Med

Low

Quiet

On/Off

On

Mode

Temp.

Timer

Filter

Status: On

OK

5. Central remote controller

(1) Press " " button. (2) Press "Set up Menue" and input password. (3) Select "Indoor unit special setting" by presing or button. (4) Select "Test operation by presing" or button (5) Press the "Select ALL button" or "ldentify unit" button

[ Select All ]: All of R.C.Group (Indoor units) [ Identify Unit ] : Specific R.C.Group (Indoor unit)

(6) Press the " Start " button The test run continues for 60 minutes. To interrupt test run before it is complet, return to the "Monitor Mode Screen", and press ON/ OFF.

Indoor unit Special Setting

Test Operation

Indoor Unit Set Temp. Range

05/31 03:59

Filter Sign

R.C. Prohibition

Test Operation

RCG_05

Operation Setting

SettingOptional

Air Flow Direction

Up

1

2

Swing

Left Right

1

2

Swing

Cancel

05/31 03:59

3

Down

3

4

5

4

Group

Select All

Identify Unit

Clear Unit

10/11.2008.Mar. 02:20 PM

Economy

Test

Special State

Anti Freeze

On

Off

Stand by (Defrost) Stand by (Oil Recovery) Test Operation

On

Off

Operation

UTY-DCG

Status: On

Filter Sign

Reset

Start

OK

01-18

6. 2-wire type wired remote controller

(1) Press "Menu" on the monitor screen. the < Main Menu screen > is displayed. (2) Press "Next Page" and press "Maintenance" (3) Press "Next Page" and press "Test Run". the <Test run screen > is displayed. (4) Press "OK" The test run continues for 60 minutes. To interrupt test run before it is complet, return to the "Monitor Mode Screen", and press ON/ OFF.

< Monitor Mode Screen >

< Main Manu Screen >

UTY - RNR

< Test Run Screen >

< Maintenance Screen >

01-19

1-5 TEST RUN CONTROL

1. When the test run signal is transmitted from standard wired, wireless remote controller, simple remote controller, transmitted netwwork, and outdoor unit.

(1) The test run operation starts and the electric expansion valve is controlled to a maximum flow, regardless of the temperature condition. (2) Frost prevention operation has priority over item(1).

(3) Whether state of the indoor unit operates or stops, All units in the same refrigerant circuit will start to conduct a test run in accordance with the operation mode set by push switch of outdoor unit ( see 1 - 2 - 3 ). (4) After 60 minutes passes, the test run stops. (5) Test running initialization is shown below. * The temperature controlling on the test run operates regardless of setting temperature.

Operating Mode

Fan speed Hi Hi Hi Hi

Vertical Air Direction Panel

Swing

*EXAMPLE

1

2

3

4

EXCEPT FOR THE DUCT MODEL DUCT TYPE

Cooling Heating Cooling Heating

1

Position

4

1

2

3

Position

4

1

OFF OFF

2

3

4

COMPACT CASSETTE TYPE

CEILING TYPE

1

2

3

4

COMPACT WALL MOUNTED TYPE

01-20

1-6 Field Setting And Monitor Mode List for Outdoor unit

Push switch on outdoor unit PCB

Monitoring mode

[ F1 ]

Classification

Device and system

Operation of each part

Time guard 20 Accumulated current time

Refrigerant cycle data 1

Refrigerant cycle data 2

Refrigerant cycle data 3

ITEM CODE No.

Connected number of indoor unit

00

Software version of outdoor unit

01

02 Software version of INV PCB

03 Software version of communication PCB

10 Rotational speed of outdoor unit fan motor

11 Rotational speed of INV compressor

12 Current value of INV compressor Current value of INV compressor is displayed

14 Pulse of EEV1 Pulse of EEV1 is displayed

15 Pulse of EEV2 Pulse of EEV2 is displayed

16 Pulse of EEV3 Pulse of EEV3 is displayed

21 INV compressor accumulated time [ Cooling ]

INV compressor accumulated time [ Heating ]

22

30 Information on Thermistor 1

( Discharge temperature sensor 1)

31 Information on Thermistor 2

( Outdoor temperature sensor )

Information on Thermistor 3

32

( Suction temperature sensor )

Information on Thermistor 4

33

( Liquid temperature sensor 1)

34 Information on Thermistor 5

(Liquid temperature sensor 2)

35 Information on Thermistor 6

( Sub-cool H-Ex (outlet) sensor )

36 Information on Thermistor 7

(Heat exchanger 1 gas sensor1)

37 Information on Thermistor 8

(Heat exchanger 2 gas sensor2)

38 Information on Thermistor 9

(Heat exchanger 1 liquid sensor)

39 Information on Thermistor 10

(Heat exchanger 2 liquid sensor)

40 Information on Thermistor 11

(Compressor temperature sensor)

50 Information on pressure sensor 1

( High pressure sensor )

51 Information on pressure sensor 2

( Low pressure sensor )

Setting Mode

Information contents

The number of the communicating unit is displayed

Software version :

[ ] [ ] [ ] [ ] [ ] displays by five items

It skips when there is no suffix

The rotational speed of the outdoor unit fan motor is displayed [ 0 ~ 999 ] rpm

The rotational speed of the compressor is displayed [ 0 ~ 999 ] rps

[ 0.00 ~99.99 ] A

[ 0 ~ 9999 ] pls

Accumulated current time is displayed [ 0 ~ 9999 ]

Accumulated time is displayed in the cooling operation of the INV compressor

[ 0 ~ 9999 ] Accumulated time is displayed in the heating operation of the INV compressor

[ 0 ~ 9999 ] The value of the Thermistor 1 is displayed [ -99.9 ~ 999.9 ]

[ -99.9 ~ 999.9 ] °C or °F

The value of the Thermistor 2 is displayed [ -99.9 ~ 999.9 ] °C or °F

[ -99.9 ~ 999.9 ] °C or °F

The value of the Thermistor 3 is displayed

[ -99.9 ~ 999.9 ] °C or °F

The value of the Thermistor 4 is displayed [ -99.9 ~ 999.9 ] °C or °F

The value of the Thermistor 5 is displayed [ -99.9 ~ 999.9 ] °C or °F

The value of the Thermistor 6 is displayed

[ -99.9 ~ 999.9 ] °C or °F

The value of the Thermistor 7 is displayed [ -99.9 ~ 999.9 ] °C or °F

The value of the Thermistor 8 is displayed [ -99.9 ~ 999.9 ] °C or °F

The value of the Thermistor 9 is displayed

[ -99.9 ~ 999.9 ] °C or °F

The value of the Thermistor 10 is displayed [ -99.9 ~ 999.9 ] °C or °F

The value of the Thermistor 11 is displayed [ -99.9 ~ 999.9 ] °C or °F

The value of the pressure sensor 1 is displayed If unit is [MPa], it is displayed as [ 0.00 ~ 9.99 ]

[psi], it is displayed as [ 0.0 ~ 999.9 ] The value of the pressure sensor 2 is displayed If unit is [MPa], it is displayed as [0.00 ~ 9.99]

[psi], it is displayed as [ 0.0 ~ 999.9 ]

10hour

°C or °F

01-21

Push switch on outdoor unit PCB

Setting mode

[ F2 ]

Install

Correction

Change of

function 1

Change of function 2

ITEM CODE No.

Pipe length setting

00

10

Sequential start shift

11

Cooling capacity shift

Heating capacity shift

12

13,14,15 Forbidden

20 Switching between batch stop or

emergency stop

22

Snow falling protection fan mode

23

Interval setting for snow falling

protection fan mode

24

High static pressure mode

25,26,27 Forbidden

Change of unit Temperature

28

Change of unit Pressure

29

30 Energy saving level setting

32,33 Forbidden

Presence of heater selection

35

control using outdoor temperature *1

Outdoor temperature zone

36

boundary temperature A*1

37 Outdoor temperature zone

boundary temperature B*1

Setting Mode

ITEM CODE No.

131-213ft.(40-65m)

00 01 0-131ft.(0-40m) 02

213-295ft.(65-90m) 295-394ft.(90-120m)

03

394-492ft.(120-150m)

04 00

Normal

01

21sec. Delay 42sec. Delay

02

63sec. Delay

03

Normal mode

00

Save energy mode +4

01

High power mode 1 -4

02

High power mode 2 -7

03

Forbidden

04 00

Normal mode

01

Save energy mode -4

02

High power mode 1 +4 High power mode 2 +7

03 00 01 00

Batch stop Emergency stop

01

Valid

00 01

Invalid Standard (30min)

00 01

Short 1 (5min)

02

Short 2 (10min)

03

Short 3 (20min)

00

Standard

High static pressure 1 (equivalent to 0.12 in.WG /30Pa)

01

High static pressure 2 (equivalent to 0.32 in.WG /80Pa)

02

Forbidden

03 00 01 00

Celsius (°C) Fahrenheit (

01

MPa

00

psi

01 00

Level 1 (stop)

01

Level 2 (operated at 40% capacity)

02

Level 3 (operated at 60% capacity)

03

Level 4 (operated at 80% capacity)

04

Level 5 (operated at 100% capacity) 00 01

No

00

Yes

01 00

01 02 03 04 05 06 07 08 00 01 02 03 04 05 06 07 08 09 10 11 12

13 14 15

°

F(-20

-4.0

-0.4°F(-18

-3.2°F(-16

6.8°F(-14

10.4°F(-12

14.0°F(-10

17.6°F(-8

21.2°F(-6

24.8°F(-4

°

F(6

42.8

14.0°F(-10

17.6°F(-8

21.2°F(-6

24.8°F(-4

28.4°F(-2

32.0°F(0

35.6°F(2

39.2°F(4

42.8°F(6

46.4°F(8

50.0°F(10

53.6°F(12

57.2°F(14

60.8°F(16

64.4°F(18

°C)

°C) °C) °C)

°C)

°C) °C) °C)

°C) °C) °C) °C) °C) °C)

°C) °C) °C)

°C) °C)

°C)

°C) °C) °C) °C) °C)

Setting Function DefaultClassification

°

F(+2°C)

°

F(-2°C)

°

F(-4°C)

°

F(-2°C)

°

F(+2°C)

°

F(+4°C)

°F

)

01-22

Push switch on outdoor unit PCB

Setting mode

[ F2 ]

Low noise setting 1

Change of function 3

Change of function 4

ITEM CODE No.

40

Capacity priority setting (in low noise mode)

Setting Mode

41 Low noise mode setting 00

Low noise mode operation

42

level setting

Back up operation

60

61,62,63

Forbidden

70 Electricity meter No. setting 1

(Set the ones digit and tens digit of the No of the electricity meter connected to CN135.)

71 Electricity meter No. setting 2

(Set the hundreds digit of the No. of the electricity meter connected to CN135.)

72 Electricity meter pulse setting 1

(Set the ones digit and tens digit of the No. of the electricity meter pulse setting connected to CN135.)

73 Electricity meter pulse setting 2

(Set the hundreds digit and thousands digit of the electricity meter pulse setting connected to CN135.)

ITEM CODE No.

00 Off (quiet priority)

On (capacity priority)

01

Off (Normal) On (Low noise mode operation is always done)

01

Level 1 (55dB)

00

Level 2 (50dB)

01 00*2

On Off

01*3 00

On Off

01

Setting Function DefaultClassification

00~99*4Setting number x00~x99

( Refer to Design & Technical Manual for details.)

00~02*4Setting number 0xx~2xx

( Refer to Design & Technical Manual for details.)

00~99*5Setting number xx00~xx99

( Refer to Design & Technical Manual for details.)

00~99*5Setting number 00xx~99xx

( Refer to Design & Technical Manual for details.)

*1 : Do not set this for outdoor units with Slave setting.

*2 : If one of compressor fails, backup operation will be performed by the remaining compressors.( For starting the system SET4-2 switching is required) *3 : If one of compressor fails, all units will be abnormal stop.

*4 : When electricity meter No. is set to "000" and "201 to 299", the pulses input to CN135 become ineffective.

Available setting number is "001" to "200"

*5 : When the electricity meter pulse setting is set to "0000", the pulses input to CN135 become ineffective.

Available setting number is "0001" to "9999"

00

01-23

Push switch on outdoor unit PCB

Function mode

[ F3 ]

Classification

Forced operation

Install and maintenance 1

Install and maintenance 2

Clear Error history clear

ITEM CODE No.

00

01

02

03,04

10

11

22

21

30

31

32

Setting Mode Setting Function

Cooling test run

Heating test run Forced thermostat-ON in Heating

Test run stop Test run is stopped

Forbidden

Signal amplifier automatic address

Indoor unit automatic address

RB unit automatic address

Vacuuming mode

Forbidden

Current time clear Accumulated current time becomes [ 0 ]

Forced thermostat-ON in Cooling

Automatic address setting operates for signal amplifier

Automatic address setting operates for indoor unit of same refrigerant circuit

Automatic address setting operates for RB unit of same refrigerant circuit

Vacuuming mode operates

Refer to page 01-01 for the function All the abnormal code histories are cleared

Push switch on outdoor unit PCB

Error history mode

[ F9 ]

INV compressor accumulated time clear

33

Field setting all clear Return to default the all set items

35

Abnormal Abnormal reset

Specialty function

Error history

40

91

ITEM CODE No.

00

01 02

03 04 05 06 07 08 09

*

Forced Central control function forced release When the centralized control device failure, and the centralized

Meaning of Error History Number

1 time ago (Newest) When the error occurred, the error code is memorized up to

2 times ago 3 times ago

4 times ago 5 times ago 6 times ago 7 times ago 8 times ago 9 times ago

10 times ago (Oldest)

Accumulated time of the INV compressor becomes [ 0 ]

It was displayed when abnormality occurs, and abnormal

code is reset

This is a function that uses to clear abnormal display after the repair is completed Please operate the switch after power off or power on the outdoor unit

control setting cannot be released, this function is used

All the limitations set with the centralized control device are

released

Information contentsClassification

10 on Main PCB.

If the memorized error code becomes over 10, the oldest one will be erased.

Refer to Chapter TROUBLE SHOOTING

Error Code List of Outdoor unit

01-24

<< Error code which manual error release will be required >> A5.1 Low pressure abnormal

84.1 Current sensor 1 error

93.1 Inverter compressor start up error

94.1 Trip detection A1.1 Discharge temperature 1 abnormal A3.1 Compressor 1 temperature abnormal

97.1 Outdoor unit fan motor lock error

97.5 Fan motor temperature abnormal

97.9 Fan motor driver abnormal

68.2 Rush current limiting resister temp rise protection

95.5 Compressor motor loss of synchronization A6.3 Outdoor heat exchanger 1 gas temperature abnormal A6.4 Outdoor heat exchanger 2 gas temperature abnormal

1-7 Field Setting / Function Setting for Indoor unit

Indoor unitfield setting setting by remote controller

ITEM CODE No.

01Address Indoor unit address 00~63 00~63

02

Filter

Airflow 20

11

13

23

24

26

Refrigerant circuit address 00~99 00~99 Filter indicator Interval

Filter sign display 00 Enable

Ceiling airflow

(Cassette type only)

Vertical airflow direction 00 Default

(Cassette type only)

Horizontal swing airflow direction 00 Default

(For horizontal swing equipped

models)

*1

Static Pressure setting

Setting Mode

- Slim Duct type -

The Range of static pressure is different from one model to other.

Static Pressure setting *2*3

- Duct (middle pressure) type -

The Range of static pressure is different from one model to other.

Static Pressure setting *4*5

- Duct (high pressure) type -

The Range of static pressure is different from one model to other.

*1: Please refer to FAN PERFORMANCE CURVE within Design and Technical manual for the features of each setting.

*2: If the Setting Number in ARUM30TLAV is configured to “12 to 14”, the operation is the same as that in “11 (SP mode 11)”. *3: If the Setting Number in ARUM36TLAV is configured to “10 to 14”, the operation is the same as that in “09 (SP mode 09)”. *4: If the Setting Number in ARUH96TLAV is configured to “30”, the operation is the same as that in “29 (SP mode 29)”. *5: ARUH72TLAV : 04 (SP mode 04) - 27 (SP mode 27) and 31 (Normal SP) ARUH96TLAV , ARUH72TLAV1 : 05 (SP mode 05) - 30 (SP mode 30) and 31 (Normal SP)

ITEM CODE No.

0001Default

Longer

02 Shorter

01 Disable 02 Display only on central remote control 00 Default 01 High ceiling

01 Raise

01 Left half

Right half

02

SP mode 00 [ 0 in.WG ( 0 Pa) ]

00

SP mode 01 [ 0.04 in.WG (10 Pa) ]

01

SP mode 02 [ 0.08 in.WG (20 Pa) ]

02

SP mode 03 [ 0.12 in.WG (30 Pa) ]

03

SP mode 04 [ 0.16 in.WG (40 Pa) ]

04

SP mode 05 [ 0.20 in.WG (50 Pa) ]

05

SP mode 06 [ 0.24 in.WG (60 Pa) ]

06

SP mode 07 [ 0.28 in.WG (70 Pa) ]

07

SP mode 08 [ 0.32 in.WG (80 Pa) ]

08

SP mode 09 [ 0.36 in.WG (90 Pa) ]

09

Normal SP [ 0.10 in.WG (25 Pa) ]

31

SP mode 00 [ 0 in.WG ( 0 Pa) ]

00

SP mode 01 [ 0.04 in.WG (10 Pa) ]

01

SP mode 02 [ 0.08 in.WG ( 20 Pa) ]

02

SP mode 03 [ 0.12 in.WG ( 30 Pa) ]

03

SP mode 04 [ 0.16 in.WG ( 40 Pa) ]

04

SP mode 05 [ 0.20 in.WG ( 50 Pa) ]

05

SP mode 06 [ 0.24 in.WG ( 60 Pa) ]

06

SP mode 07 [ 0.28 in.WG ( 70 Pa) ]

07

SP mode 08 [ 0.32 in.WG ( 80 Pa) ]

08

SP mode 09 [ 0.36 in.WG ( 90 Pa) ]

09

SP mode 10 [ 0.40 in.WG ( 100 Pa) ]

10

SP mode 11 [ 0.44 in.WG ( 110 Pa) ]

11

SP mode 12 [ 0.48 in.WG ( 120 Pa) ]

12

SP mode 13 [ 0.52 in.WG ( 130 Pa) ]

13

SP mode 14 [ 0.56 in.WG ( 140 Pa) ]

14

Normal SP [ 0.16 in.WG ( 40 Pa) ]

31

SP mode 04 [ 0.16 in.WG ( 40 Pa) ]

04

SP mode 05 [ 0.20 in.WG ( 50 Pa) ]

05

SP mode 06 [ 0.24 in.WG ( 60 Pa) ]

06

SP mode 07 [ 0.28 in.WG ( 70 Pa) ]

07

SP mode 08 [ 0.32 in.WG ( 80 Pa) ]

08 09

SP mode 09 [ 0.36 in.WG ( 90 Pa) ]

10

SP mode 10 [ 0.40 in.WG ( 100 Pa) ] SP mode 11 [ 0.44 in.WG ( 110 Pa) ]

11

SP mode 12 [ 0.48 in.WG ( 120 Pa) ]

12

SP mode 13

13

SP mode 14

14

SP mode 15

15

SP mode 16

16

SP mode 17

17

SP mode 18

18

SP mode 19

19

SP mode 20

20

SP mode 21

21

SP mode 22

22

SP mode 23

23

SP mode 24

24

SP mode 25

25

SP mode 26

26

SP mode 27

27

SP mode 28

28

SP mode 29

29

SP mode 30

30

Normal SP [ 0.60 in.WG ( 150 Pa) ]

31

Setting Function DefaultClassification

[ 0.52 in.WG ( 130 Pa) ] [ 0.56 in.WG ( 140 Pa) ] [ 0.60 in.WG ( 150 Pa) ] [ 0.64 in.WG ( 160 Pa) ] [ 0.68 in.WG ( 170 Pa) ] [ 0.72 in.WG ( 180 Pa) ] [ 0.76 in.WG ( 190 Pa) ] [ 0.80 in.WG ( 200 Pa) ] [ 0.84 in.WG ( 210 Pa) ] [ 0.88 in.WG ( 220 Pa) ] [ 0.92 in.WG ( 230 Pa) ] [ 0.96 in.WG ( 240 Pa) ] [ 1.00 in.WG ( 250 Pa) ] [ 1.04 in.WG ( 260 Pa) ] [ 1.08 in.WG ( 270 Pa) ] [ 1.12 in.WG ( 280 Pa) ] [ 1.16 in.WG ( 290 Pa) ] [ 1.20 in.WG ( 300 Pa) ]

00 00

01-25

Indoor unit field setting setting by remote controller

Correction

Change of function 1

Change of function 2

ITEM CODE No.

30

31

40

43

46

47

49

60

61

62

Setting Mode

Heat air temperature trigger 00

Auto restart *1 00 Enable

Cool air prevention 00 Super low

External control 00

Error report target 00

FAN Setting when cooling thermostat OFF *2 Switching functions for external inputs and external outputs terminals

Control switching of external heaters (Except Compact wall mounted and Wall mounted )

Operating temperature switching of external heaters (Except Compact wall mounted and Wall mounted )

ITEM CODE No.

00Cool air temperature trigger 01 02

01 02 03

Default 0 Temperature overshoot setting +4°F(+2°C) Temperature undershoot setting -4°F(-2°C)

Default 0°F(0°C) Temperature undershoot setting -11°F(-6°C) Temperature slightly unbdershoot setting -7°F(-4°C) Temperature overshoot setting +7°F(+4°C)

Setting Function DefaultClassification

°F(0°C)

01 Disable

01

Follow the setting on the remote controller

Start / Stop 01 Emergency stop 02 Forced stop (Start/Stop by RC is restricted)

All 01 Display only for central remote control 00

Follow the setting on the remote controller

Forced stop

01

Mode 0

00

Mode 1

01

Mode 2

02

Mode 3

03 04

Mode 4 05

Mode 5 06

Mode 6

Mode 7

07 08

Mode 8

Auxiliary heater control 1

00

Auxiliary heater control 2

01

Heat pump prohibition control

02 03

Heater selection control using outdoor temperature 1

Heater selection control using outdoor temperature 2

04

Setting 0

00 01

Setting 1 02

Setting 2 03

Setting 3 04

Setting 4

Setting 5

05

*1: Auto restart is an emergency function such as for power failure etc.

Do not start and stop the indoor unit by this function in normal operation. Be sure to operate by the control unit, converter or external input device.

*2: Fan Setting when cooling thermostat OFF, Connection of the wired remote controller (2-wire type or 3-wire type) and switching its thermistor are necessary.

01-26

1-8 Field Setting / Function Setting for Outdoor air unit

Indoor unit field setting setting by remote controller

ITEM CODE No.

Address Indoor unit address 00~63 00~63

00

Setting Mode

ITEM CODE No.

02 Refrigerant circuit address 00~99 00~99

Filter 11 Filter indicator Interval

13 Filter sign display

Airflow

26

Static Pressure setting

- Outdoor air unit Only -

The Range of static pressure is different from one model to other.

Change of function 1

Change of function 2

Model name

AAUA48TLAV

AAUA72TLAV

AAUA96TLAV

40 Auto restart *1 00 Enable

43 Cool air prevention 00 Super low

46 External control 00 Start / Stop

47

60,61,62

63

65 Threshold temperature setting

Range of static

pressure

SP mode 05 to 19 (0.2 to 0.76 in.WG)

SP mode 05 to 20 (0.2 to 0.80 in.WG)

SP mode 05 to 22 (0.2 to 0.88 in.WG)

Error report target

Forbidden

Humidifier control *2

for cool / heat switch over*3

Normal static

pressure

0.74 in.WG (185 Pa)

0.80 in.WG (200 Pa)

00 Default

Longer

01

Shorter

02 00 Enable

Disable

01 02 Display only on central remote control

SP mode 05

05

SP mode 06 [ 0.24 in.WG ( 60 Pa) ]

06

SP mode 07 [ 0.28 in.WG ( 70 Pa) ]

07

SP mode 08 [ 0.32 in.WG ( 80 Pa) ]

08

SP mode 09 [ 0.36 in.WG ( 90 Pa) ]

09

SP mode 10 [ 0.40 in.WG ( 100 Pa) ]

10

SP mode 11 [ 0.44 in.WG ( 110 Pa) ]

11

SP mode 12 [ 0.48 in.WG ( 120 Pa) ]

12

SP mode 13 [ 0.52 in.WG ( 130 Pa) ]

13

SP mode 14 [ 0.56 in.WG ( 140 Pa) ]

14

SP mode 15 [ 0.60 in.WG ( 150 Pa) ]

15

SP mode 16 [ 0.64 in.WG ( 160 Pa) ]

16

SP mode 17 [ 0.68 in.WG ( 170 Pa) ]

17

SP mode 18 [ 0.72 in.WG ( 180 Pa) ]

18

SP mode 19 [ 0.76 in.WG ( 190 Pa) ]

19

SP mode 20 [ 0.80 in.WG ( 200 Pa) ]

20

SP mode 21 [ 0.84 in.WG ( 210 Pa) ]

21

SP mode 22 [ 0.88 in.WG ( 220 Pa) ]

22

Normal SP

31

01 Disable

01 Follow the setting on the remote controller

01 Emergency stop 02 Forced stop (Start/Stop by RC is restricted)

All

00 01 Display only for central remote control 00 01

mode 00

00 01

mode 01

mode 02

02

mode 0 +

00

mode 1 +

01 02

mode 2 +

mode 3 +

03

mode 4 +

04

mode 5 +

05

mode 5 +

06

Setting Function DefaultClassification

[ 0.20 in.WG ( 50 Pa) ]

10°F (+5

-

4°F (+2

-

6°F (+3

-

8°F (+4

-

10°F (+5

-

12°F (+6

-

14°F (+7

-

°C) °C)

°C)

°C) °C) °C)

-

00 00

*1: Auto restart is an emergency function such as for power failure etc.

Do not start and stop the indoor unit by this function in normal operation. Be sure to operate by the control unit, converter or external input device.

*2: Select control conditions of external output.

"Mode 00" is output when heating thermostat is ON, "Mode 01" is output in heating operation, "Mode 02" is output in heating operation and in fan operation.

*3:

Threshold temperature setting for cool / heat mode under auto operation ; Set temperature + *Cool / heat mode tends to be switched as the threshold temperature range gets smaller,

4°F (+2

°C) to +14°

-- - -

F (+7

°C)

and cool / heat mode becomes difficult to be switched as the threshold temperature range gets larger. Set the proper value according to use conditions.

01-27

2. OUTDOOR UNIT OPERATION CONTROL

2. OUTDOOR UNIT

2-1 REFRIGERANT CIRCUIT

Outdoor unit

HPSW1

TH1

CMP1

(INV)

TH11

CMP

ACM

Indoor unit1

TH24

SV4

4WV 1

4WV 2

TH7

HEX1

TH8

HEX2

FP

FAN1

HPS

TH3

OS

SV2

SV3

SV1

LPS

ACM

: Capillary

TH21

HEX21

FAN21

TH22

EEV21

RB unit1

SVD1

SVB2

TH2

TH9

TH10

EEV1

EEV2

: Strainer

EEV3

RCV

SCHEX

TH4

TH6

FP

: Fusible plug

Operation temp. 165 F (75 C )

TH5

GAS LINE

(High pressure)

LIQUID LINE

GAS LINE

(Low

pressure)

No. Part name Function

1 Compressor temp. Sensor 1 Detects the compressor temperature

2 Discharge temp. Sensor 1 Detects the discharge temperature

High pressure Switch Detects abnormal high pressure 609 psi (4.20 MPa)3

4 Check valve Comp. pressure equaization

Oil Separator Separates oil and refrigerant5

6 Compressor (Inverter) Operation range ( 20 rps - 115 rps )

7 Bypass / Oil return Valve HP-LP bypass in protection, Returns the oil to COMP

8 Oil return Valve Returns the oil to Compressor

9 High pressure Sensor Detects the High pressure

10 Bypass Valve

11 Suction gas temp. Sensor

12 Low pressure Sensor

13 Accumulator

HP-LP bypass in protection / Comp. pressure equalization

Detects the temp of refrigerant

Detects Low pressure

Collects refrigerant and the returned oil

14 4-Way-Valve 1 Changes operation mode of HEX 1

4-Way-Valve 215

Changes operation mode of HEX 2

16 Service port Measure High pressure for Service

17 Heat-Ex 1 gas temp. Sensor Detects the temperature of refrigerant

18 Heat Exchanger 1 Operates as Condenser / Evaporator

19

Heat-Ex 2 gas temp. Sensor Detects the temperature of refrigerant

Heat Exchanger 2 Operates as Condenser / Evaporator

20

21 Outdoor unit FAN (Motor) Control FAN speed for heat exchange of HEX

22 Outdoor temp. Sensor Detects the ambient temperature

23 Heat-Ex 1 liquid temp. Sensor Detects the temperature of refrigerant

Heat-Ex 2 liquid temp. Sensor Detects the temperature of refrigerant24

25 Pressure regulation valve Operates in regulated pressure 580 psi (4.00 MPa)

No.

SVB1

Part name

Function

SVS1

SVS2

26 Outdoor unit EEV1 Controls the flow of ref. based on target pressure

27 Outdoor unit EEV2 Controls the flow of ref. based on target pressure

Receiver tank Storage extra refrigerant28

29 Liquid pipe temp. Sensor 1 Detects the temperature of liquid refrigerant

Outdoor unit EEV3 Controls ref. subcooling /Operates in protection30

31 Sub-Cool Heat exchanger Subcool of liquid refrigerant

Sub-Cool HEX gas outlet temp

32

Sensor

Detects the temperature of refrigerant

33 Liquid pipe temp. Sensor 2 Detects the temperature of liquid refrigerant

34 High pressure gas cut valve Shut off High pressure gas line in all Cooling mode

35 3way-valve (High pressure Gas) Open / Close for High pressure Gas line

36 3way-valve (Liquid) Open / Close for Liquid line

37 3way-valve (Low pressure Gas) Open / Close for Low pressure Gas line

38 Service port Measure Low pressure for Service

39 I.U HEX outlet temp. Sensor Detects the temperature of refrigerant

Room temp. Sensor40

Detects the temperature of room

41 Indoor unit FAN (Motor) Controlled by setting / protection / Thermo OFF

42 I.U Heat Exchanger Operates as Condenser / Evaporator

43 I.U HEX inlet temp. Sensor Detects the temperature of refrigerant

44

Indoor unit EEV Controlled by setting / protection / Thermo OFF

SVD1 (Discharge) Opens in Heat / Vacuum mode

45

46 SVB2 (Pressurization) Opens in Heat / Vacuum mode

47 SVS1 (Suction 1) Opens in Cool / Dry / Defrost / Oil-Recovery / Vacuum

48 SVS2 (Suction 2) Opens in Cool / Dry / Defrost / Oil-Recovery / Vacuum

Check valve Shut off opposit refrigerant flow49

50 SVB1 (Decompression) Opens in Stop / FAN / same as the function of SVS

02-01

2-1-1 REFRIGERANT CIRCUIT for Outdoor air unit

Outdoor air unit (AAUA48/ 96TLAV)

TH25

TH24

51

Outdoor air unit (AAUA72TLAV)

55

TH24

51

59

52

59

FAN21

52

HEX21

53

TH21

TH25

HEX21

53

TH21

54

FAN21

54

FAN22

TH22

56

EEV21

57

58

56

EEV21

57

58

: Capillary

: Strainer

No. Part name Function

51

Heat exchanger outlet thermistor Detects the temperature of refrigerant

52

Suction airflow temp. thermistor

53

Heat exchanger Operates as Condenser / Evaporator

54

Fan motor Controlled by setting / protection / Thermo OFF

55

Fan motor Controlled by setting / protection / Thermo OFF

56

Heat exchanger inlet thermistor Detects the temperature of refrigerant

Electric expansion valve Controlled by setting / protection / Thermo OFF

57

Solenoid valve (Bypass) Opens at Thermo OFF in Heating mode

58

59

Discharge airflow temp. thermistor

Detects the temperature of suction airflow

Detects the temperature of discharge airflow

02-01

+1

2-2 INPUT / OUTPUT LIST

High pressure sensor Low pressure sensor Discharge temperature sensor 1 Outdoor temperature sensor

Suction gas temperature sensor Liquid pipe temperature sensor 1

Liquid pipe temperature sensor 2

Sub-cool heat exchanger gas outlet temp.sensor

Heat exchanger 1 gas temp. sensor Heat exchanger 2 gas temp sensor Heat exchanger 1 liquid temp. sensor Heat exchanger 2 liquid temp. sensor Compressor temperature sensor 1 Operation current sensor High pressure switch 1

Rotary SW & DIP-SW & Push SW

Input / output or kind of detail Control range

Pressure sensor Pressure sensor Thermistor Thermistor

Thermistor Thermistor Thermistor

Thermistor Thermistor

Thermistor

Current transformer Pressure switch

Address and function setting

Measure range 0 to 5.0MPa (0 to 725psi) Measure range 0 to 1.7MPa (0 to 247psi) Measure range 10 to 130 (50 to 266 F)

Measure range -25 to 58 (-13 to 136 F) Measure range -35 to 70 (-31 to 158 F) Measure range -35 to 70 (-31 to 158 F) Measure range -35 to 70 (-31 to 158 F) Measure range -35 to 70 (-31 to 158 F) Measure range -35 to 70 (-31 to 158 F) Measure range -35 to 70 (-31 to 158 F) Measure range -35 to 70 (-31 to 158 F) Measure range -35 to 70 (-31 to 158 F)

Measure range 10 to 130 (50 to 266 F)

Open 4.2MPa(609psi) / Short 3.2MPa(464psi)

Compressor 1 (Inverter) Electric expansion valve 1 (HEX1)

Electric expansion valve 2 (HEX2) Electric expansion valve 3 (SC - HEX) Fan motor

4-way valve 1 (HEX1) 4-way valve 2 (HEX2)

Solenoid valve 1 Hot gas bypass AC208-230V, 60Hz, 8W Solenoid valve 2 AC208-230V, 60Hz, 6W Solenoid valve 3 Solenoid valve 4

Crank case heater 1 For Compressor (Lower) Crank case heater 2 For Compressor (Upper) Base heater Field supply

Communication Input / Output

LON WORKS Inverter communication

Outdoor unit communication

External input 1 (CN131) (Low noise mode operation)

External input 3 (CN133)

External

(Outdoor unit operation peak control)

Input / Output

External input 4 (CN134) (Emergency stop operation)

Magnetic relay EEV coil EEV coil

Operation coil AC208-230V, 60Hz Operating voltage DC12V Operating voltage DC12V

EEV coil Operating voltage DC12V

DC Brushless motor 4-way valve coil

AC208-230V, 60Hz 6/5 W

4-way valve coil AC208-230V, 60Hz 6/5 W

Comp. pressure equalization valve ACM oil return valve1 AC208-230V, 60Hz, 6W

High pressure gas cut off valve

AC208-230V, 60Hz 6/5 W

AC230V, 35W AC230V, 35W AC230V

The allowable current is 1A or less

Indoor unit Outdoor unit

Outdoor unit Outdoor unit

Non-voltage contact input

LED display

Electricity meter puls input (CN135)

External output 1 (CN136) (Error display) External output 2 (CN137) (Operation display)

Single LED 101 Single LED 102 7 Segment LED

ON (Error) / OFF (Normal) ON (Operation) / OFF (Stop)

Control output: DC 0/12-24V, Max.30mA Control output: DC 0/12-24V, Max.30mA

Display the information on operation, error and setting with single LED and 7 segment LED.

02-02

2-3 Heat Recovery Operation controlling

2-3-1 Operation mode selection and controlling

Under Heat Recovery operation, the heat balance for the system is controlled based on the Target High pressure and the Target low pressure. By changing compressor rotation speed or changing Heat exchange capacity, the system can maintain the good heat balance. The target High pressure value and the target low pressure value in the target range are decided by the outdoor unit's operation mode (Cond ensor or Evaporator).

The outdoor unit's operation mode is decided by depending on the operation order from the connecting indoor unit at the first start up.

- Indoor unit's cooling demand is bigger than heating demand: Outdoor unit operates as Condensor

- Indoor unit's heating demand is bigger than cooling demand: Outdoor unit operates as Evaporator

After the mode was decided at the start up, the operation mode of outdoor unit will be selected by based on the target pressure.

LP

P

Ex. When the refrigerant flow is required

HP

P

Ex. When the refrigerant evaporation is required

Target: HP

Target: LP

Target: HP

Target: LP

Compressor rps UP

H

Condensor capacity: DOWN) (Evaporator capacity: UP)

H

2-4 COMPRESSOR OPERATION

Condensor capacity: UP (Evaporator capacity: DOWN)

Targeted

(HP & LP)

Ex. When the refrigerant condensation is required

Compressor rps DOWN

Ex. When the refrigerant flow is not required

LP

P

Tar ge t: HP

Tar ge t: LP

H

HP

Tar ge t: HP

Target: LP

H

2-4-1 Operation / Stop Condition

When cooling requirement capacity or heating requirement capacity from either of the indoor units in the same refrigerant circuit is input, the compressor operates. When all the indoor units in no "cooling requirement capacity" or "heating requirement capacity", is stopped. But in the following case, the compressor operates in accordance with operation of each mode.

During 3 minute restart prevention operation Icing protection Failure (Refer to chapter 4, TROUBLE SHOOTING ) Oil recovery Under expansion valve initialization At protective operation

Emergency stop Defrost operation

Peak cut stop operation

02-03

the compressor

2-4-2 Compressor speed control

(1) Speed range and controlling

- On operation range: 20 - 115 rps *

- Changing interval: 60 sec.

- When the multi connection outdoor unit has the same type of compressor, all of compressors rotational speed are controlled with the same speed at the normal operating condition.

- All of the outdoor unit compressors must start at the start-up process.

- The Normal start process (Except the condition of Cold start) The first target speed is decided by indoor unit capacity demand. The upper limit speed at starting is made 60 rps and is raised in 30 rps to 90 rps after 60 seconds. (The upper speed limit depends on the operating high pressure value)

[rps]

115

90

60

Hold 60 seconds

60

120

Normal control starts

180

[sec]

3.80MPa

(551psi)

3. MPa (471psi)

Maximum speed: 80rps

Maximum speed: 90rps

*

The maximum speed: 115 rps

Cooling (Cooling main) 100rps Heating (Heating main) 115rps

- The lower limit speed at start-up changes depending on the outdoor temperature

[rps]

65cc (79cc) type compressor

74(60)

37(30)

24(20)

- 10

7

21

[ ]

Outdoor temperature

- Cold Start start process Condition: Outdoor temperature below 21 (69.8 F) and the system stopped for more than 1 hour] Control HP*: Change the rps so that high pressure does not reach to protection condition

[rps]

Process 1

Process 2

Process 3

1 min or Max.15 min.

Hold Control HP*

30 sec. 10 sec.

Normal control starts

[sec]

02-04

2-4-3 Capacity Control

(1) Capacity of compressor operation

The inverter compressor is able to control the amount of required refrigerant circulation in details.

[rps]

0.1 rps on controlling steps1

115

On operating range: 20 to 115 rps*

20

Operating Range

(20 to 115 rps*)

*The maximum speed: 115 rps

Cooling (Cooling main) 100rps Heating (Heating main) 115rps

Capacity

By combining the operation of inverter compressors, the amount of required refrigerant circulation acceding to cooling and heating load can be supplied from compressor efficiently.

Ex) Combnation of 65cc compressor / Heating (Heating main)

Total capacity

[rps]

115

20

Total capacity

INV

[BTU]

[rps]

2 times 115

48

20

Total capacity

INV

[BTU]

3 times 115

68

48

20

INV

[BTU]

Stand-alone

2 Outdoor units

3 Outdoor units

(2) Target low-pressure and high-pressure control

In order to make the evaporation pressure of the indoor unit at the proper pressure on a variety of operations, capacity of the compressor will be controlled by low-pressure sensor.

In order to make the condensation pressure of the indoor unit at the proper pressure on a variety of operations, capacity of the compressor will be controlled by high-pressure sensor.

In order to keep evaporation pressure / condensation pressure of the indoor unit at the proper pressure on a variety of operations, capacity of the compressor and the capacity Heat exchange(incl. fan controll) will be controlled by both of pressure sensor at the sametime

Target low-pressure and high pressure temperature depends on system capacity, capacity of compressor operation, pipe length, and capacity shift switch settings.

02-05

2-4-4 Compressor Sequence Operation

Make starting sequence and start and stop of the compressors in accordance with the below sequence.

Starting sequence condition Example)

Starting sequence : Compressor started first, compressor stopped last Starting sequence : Compressor started 2nd, compressor stopped 2nd from the end Starting sequence : Compressor started 3nd, compressor stopped 3nd from the end

Rotate the stating sequence under the following conditions: (1) Defrosting (2) Oil recovery (3) When cooling discharge temperature is high (4) After stopping from Heating operation / Heating main operation

Run command

Starting rotation

execution

Stop Compressor

Operation Compressor

INV

INV INV

Stop

Start

Stop

INV

INV INV

INV

INV INV

Oil recovery

Starting rotation

INV

Stop

INV

Start

INV

INV INV

INVINV

INV INV

Start

INV

Stop

INV

Stop

(example)

Stop

execution

INV

INV INV

Stop

INV

Start

INV

INV INV

Stop

INV

Start

02-06

2-5 HEAT EXCHANGER CAPACITY CONTROL

2-5-1 Operation mode selection and controlling

Under The heat exchanger capacity is controlled using the 4WV, fan, and EEV according to the target high and low pressures. The method for changing the capacity of the heat exchanger differs depending on the operation mode.

System demand Heat-Ex conditions Controling device Control target Cooling Condensor Fan Motor + 4WV (ON/OFF) +EEV Target High pressure Heating Evaporator Fan Motor (Max rpm) + 4WV (ON) +EEV Maximum control Cooling main Condensor Fan Motor + 4WV (ON/OFF) + EEV Target High / Low pressure Heating main Evaporator Fan Motor + 4WV (ON) + EEV Target High / Low pressure

2-5-2 Capacity control

The heat exchanger is operated at maximum efficiency by using each outdoor unit. (Max. 6 Heat exchanger can be used)

Masterr

HEX1

HEX2

Slave1r Slave2r

HEX1

HEX2

HEX1

HEX2

(1) Cooling (In case of 3 outdoor units connection) Heat Exchanger condition: Condensor

- 4WV ON / OFF (Dpending on HEX capacity shift)

Fan speed Controlling range

- 0 to 500 rpm Only one HEX in use

- 300 to 500 rpm During HEX capacity shift

- Over 500 rpm Full of Heat-Ex capacity

Heat Exchanger capacity shift controlling

- Increas: Upper HEX has a priority in usage condition. (No available Upper HEX, Lower HEX use)

- Decrease: Lower HEX has a priority in stop condition.

Fan Speed (rpm)

880

(920)

500

(500)

300

(300)

0

( ) :L-Chassis

Number of Condensor

1 2 3 4 5 6

Target High pressure < Operating High Pressure

Target High pressure > Operating High Pressure

(2) Heating Heat Exchanger condition: Evaporator

- 4WV ON state

Fan speed Controlling range

- Maximum speed

Heat Exchanger capacity shift controlling

- Use all of available HEXs (Maximum capacity)

Fan Speed (rpm)

Maximum number of HEX available in use

Number of Evaporator

880 (920)

0

( ) :L-Chassis

(3) Cooling Main / Heating Main (In case of 3 outdoor units connection) Heat Exchanger condition: Depending on the difference between operating pressure and the Target High pressure and the Target Low pressure.

Fan speed controlling: Depending on the condition of HEX (Condensor / Evaporator)

Heat Exchanger capacity shift controlling:

- Increas: Upper HEX has a priority in usage condition. (No available Upper HEX, Lower HEX use)

- Decrease: Lower HEX has a priority in stop condition.

Fan Speed (rpm)

(920)

880

(500)

500

(300)

300 0

( ) :L-Chassis

Heating Main

Number of Evaporator

6 5 4 3 2 1 1 2 3 4 5 6

Cooling Main

Number of Condensor

02 - 07

2-6 FAN CONTROL

2-6-1 Cooling / Cooling Main Operation

The outdoor fan speed at start up is 300 rpm

Fan step

16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

S-Chassis

880 860 810 720 620 500 420 360 320

300 intermittent 6 intermittent 5 intermittent 4 intermittent 3 intermittent 2 intermittent 1 0

L-Chassis

920 870 820 720 620 500 420 360 320

300 intermittent 6 intermittent 5 intermittent 4 intermittent 3 intermittent 2 intermittent 1 0

<< Ex. Cooling operaion >>

The fan speed is controlled to keep high pressure saturation temperature within the target range as follows The high-pressure is monitoring at a set time interval and the fan speed is changed by the following conditions.

Fan speed (rpm)

(Conditions which raise the fan speed) High-pressure saturation upper limit of target high-pressure saturation or heat sink temperature 176°F(80°C)

(Conditions which lower the fan speed) High-pressure saturation low limit of target high-pressure saturation range and heat sink temperature 167°F(75°C)

High-pressure saturation temp.

129 F

(54.0 )

116 F

(46.6 )

107 F

(40.4 )

Upper limit of target high-pressure saturation temp.

Target high-pressure saturation temp.

Low limit of target high-pressure saturation temp.

95 F

(35.0 )

126 F

(52.0 )

Outdoor temperature

02-08

Intermittent fan mode

When switched from normal fan step to intermittent fan step, always start from 300rpm/7sec. When there was a change during intermittent step 1-6, switching is performed at the time the current speed duration time reaches time-up.

Fan step Fan mode

6 5 4 3 2 1

Normal fan step

intermittent 6 intermittent 5 intermittent 4 intermittent 3 intermittent 2 intermittent 1

Intermitten fan step

Fan speed 0 rpm duration time T ( sec )

40 33 26 19 12 6

Fan speed

7 sec 7 sec 7 sec

300 rpm

[ T ] sec [ T ] sec

0 rpm

2-6-2 Heating / Heating main Operation

Fan speed 300 rpm duration time ( sec )

7

Time

(1) Heating Operation

The fan speed during all heating is constant with Fan step 16* regardless of the outdoor air temperature.

( rpm )

920

880

( )

-4 F 70 F

Heating Operating range

L-Chassis

S-Chassis

Fan step

16* 15 14 13 12 11

Fan speed (rpm)

S-Chassis L-Chassis

880 860 810 720 620 500

(-20 ) (21 )

(2) Heating main Operation

Operate at 500 rpm until all the heat exchangers are used up. Then adjust the rpm up or down in accordance with the load.

Fan Speed (rpm)

880 (920) 500 (500) 300 (300) 0

Number of Evaporator

1 2 3 4 5 6

920 870 820 720 620 500

( ): L-Chassis

02-09

2-7 EXPANSION VALVE CONTROL

The EEV controls the flow of refrigerant

Operation mode

Contrl and detection

Control range

operation range stop

Cooling

EEV 1

Cooling Main

EEV 2

Heating

Heating Main

Cooling Cooling Main

EEV 3

Heating Heating Main

Initialization conditions:

4WV 1

4WV 2

- Liquid Pressue control (TH4)

- HEX balance (TH9,TH10)

"TH9 TH10"

- SH control (TH7,TH8 - LPS ) "Target SH: 8 F (4 C)

"

- Protection (TH1) (LPS)

- SH control (TH6 - LPS ) "Target SH: 8 F (4 C)

"

- Protection (TH1)

- When power turned On. - When operation stopped.

TH7

HEX1

TH8

HEX2

TH9

TH10

EEV1

EEV2

RCV

TH4

52- 480 pulses

11 - 480 pulses

0- 500 pulses

SV4

EEV3

SCHEX

TH5

0 pulses

FP

FAN1

TH2

TH6

02-10

2-8 SPECIAL OPERATION

2-8-1 Oil Recovery operation

(1) Purpose of the operation

The amount of refrigerant lubricant oil which has been transported to the indoor units and the connection pipe with the refrigerant will become large as the operation time of compressor increases. It is necessary to recover the oil back into the outdoor unit for a certain time interval in order to prevent compressors from damaging due to lack of lubrication oil.

< Start condition >

Compressor accumulated operation time since last oil recovery operation exceeds 3 hours (first time: 1 hour.)

< End condition >

3 minutes have elapsed since the compressor restart and Suction superheat "Suction temperature - Lowpressure saturaion temperature" 10 F (5 C) at all Outdoor units Or 6 minutes have elapsed since the start

< Operation >

Finishing processActuator

All compressor operation Stop

Keeps the operation mode

Stops

0 pls

Open

Compressor

Heat Ex(4WV)

FAN

Heat Ex EEV

SV1,SV2

Preparation process On Oil recovery operatiom

All compressor operation Stop

Keeps the operation mode

Stops

0 pls

Open

All compressor start

Condensor (OFF)

Start (Target high pressure control)

480pls

Close

Others

During the oil recovery operation, the status can confirm:

- 2 wires WRC --- Press the Status button on the screen.

appears on the display - 3 wires WRC and Central remote controller ---

- Simple remote controller ---

- LED indication --- Operation LED (Green) flash slowly.

appears on the display

2-8-2 Pre-heat operation

This pre-heat operation protects the start up failure by preventing the refrigerant from soaking into the oil in compressor.

2 pcs of belt heater installed on the compressor The crankcase heaters are controlled by the outdoor temperature < Control condition >

Crankcase heater ON: 30 minutes elapsed since installed compressors stopped

OFF: Installed compressors operation

(However, ON when power turned on)

.

35W (1 pcs)

5

3

70W (2 pcs)

02-11

2-8-3 Defrost Operation Control

< Defrosting start condition >

Accumulated heating operation time is 40 minutes or longer

(Accumulated heating operation time is reset at the end of cooling operation or defrosting operation.)

And One of Heat-Ex satisfies condition or or below

Condition : Accumulated operating time is 150 minutes* or longer: "Heat exchange liquid temperature (TH9 and TH10) 28.4°F ( -2°C)" *75 minutes: when indoor unit connection capacity 90% at 1 outdoor unit connection.

Condition : Accumulated time 10 minutes: "Heat exchange liquid temperature (TH9 and TH10) Defrosting Start Judgment Temperature* And "During heat exchange liquid temperature keeps droping "

*Defrosting Start Judgment Temperature(°F) = 0.8 x Outdoor temperature (°F) - 52.9

However, -17.7°F to 21.2°F If the calculated result is lower than -17.7°F, the judgment temperature is defined as -17.7°F

If the calculated result is higher than 21.2°F, the judgment temperature is defined as 21.2°F

(Defrosting start judgment temperature are determined by the outdoor temperature.)

*Defrosting Start Judgment Temperature(°C) = 0.8 x Outdoor temperature (°C) - 11.6 However, -27.6°C to - 6°C If the calculated result is lower than -27.6°C, the judgment temperature is defined as -27.6°C

If the calculated result is higher than -6°C, the judgment temperature is defined as -6°C

(Defrosting start judgment temperature are determined by the outdoor temperature.)

: Less than 10 minutes operation at outdoor temperature below 35.6°F (2°C) occured 20 times

Condition

< Defrosting end condition >

At all outdoor units, heat exchange liquid temperature Defrosting End Judgment Temp.* and 180sec elapsed, and all of outdoor unit's Suction temperature - Low pressure saturation temperature 10°F (5°C) or When 15 minutes have elapsed from the start

*Defrosting End Judgment Temperature(°F)= 0.39 x outdoor temperature(°F) + 54.8

-However, 41.0°F to 53.6°F range

If the calculated result is lower than 41.0°F, the judgment temperature is defined as 41.0°F.

If the calculated result is higher than 53.6°F, the judgment temperature is defined as 53.6°F.

*Defrosting End Judgment Temperature(°C)= 0.39 x outdoor temperature(°C) + 12.7

-However, 5°C to 12°C range

If the calculated result is lower than 5°C, the judgment temperature is defined as 5°C.

If the calculated result is higher than 12°C, the judgment temperature is defined as 12°C

02-12

< Operating state of each part during defrosting operation >

Actuator

Compressor

Heat Ex(4WV)

FAN

EEV1 EEV2

EEV3

SV1,SV2

Preparation process On Defrost operatiom

All compressor operaiotn Stop

Change Condensor (OFF)

Stops

0 pls

Open (Balancing)

[ STEP 1 ]

All compressors sart the operation in defrosting

Master

HEX1

EEV1: 300 pls

HEX2 HEX2

EEV2: 480 pls

All compressor start

Cndensor (OFF)

Stops

EEV1: 300 -> 200 pls EEV2: 480 -> 330 pls

100 - 500 pls

Close

Slave 1 Slave 2

HEX1

EEV1: 300 pls EEV1: 300 pls

EEV2: 480 pls

HEX1

HEX2

Finishing process

All compressor operaiotn Stop

Keeps the operation mode

Stops

0 pls

Open

Compressor in operation

Stopped compressor

HEX in defrosting

Defrosting Defrosting Defrosting

HEX Defrost end

[ STEP 2 ]

When one of the heat exchanger reached to the End condition, the expansion valve open pls will be set as smaller pls to make it easier for refrigerant distribution to another heat exchanger.

Slave 1 Slave 2Master

HEX1 HEX1

EEV1: 200 pls

HEX2 HEX2

EEV2: 330 pls

Defrost end

EEV1: 300 pls

EEV2: 480 pls

Defrosting

EEV1: 200 pls

EEV2: 330 pls

Defrost end

HEX1

HEX2

[ STEP 3 ]

When the defrosting of all outdoor units ends, all outdoorunit stop. The start rotation excution is done, and restarts

Slave 1 Slave 2Master

HEX1 HEX1 HEX1

EEV1: 0 pls

HEX2 HEX2 HEX2

EEV2: 0 pls

Defrost end

EEV1: 0 pls

EEV2: 0 pls

Defrost end

EEV1: 0 pls

EEV2: 0 pls

Defrost end

02-13

2-8-4 Low noise mode

When the low noise mode setting ON from Push SW or External input or System controller Input, the outdoor unit operates in the low noise mode as follows.

Setting and corresponding operations

«

External Input (CN131) on Master O.U

Low noise mode setting

or

(Push SW)

»

Capacity priority setting (Push SW)

Low noise level setting (Push SW)

Operation mode

LEVEL 1

LOW NOISE MODE

OFF

LEVEL 2

LOW NOISE MODE

ON

LEVEL 1

* Automatic switching

ON

LEVEL 2

Low noise mode and operation contents

«»

LOW NOISE MODE

COOL

HEAT

COOL

HEAT

Fan upper limit speed

Upper limit compressor capacity

Fan upper limit speed

Upper limit compressor capacity

Fan upper limit speed

Upper limit compressor capacity

Fan upper limit speed

Upper limit compressor capacity

6 ton

620rpm 620rpm

50rps

620rpm 620rpm

50rps

500rpm 500rpm

50rps

500rpm 500rpm

50rps 52rps

8 ton

62rps

50rps

10 ton

620rpm

56rps

620rpm

56rps

500rpm

47rps

500rpm

53rps

54rps

* Automatic switching

The operating noise is reduced by limiting the rotational speed of compressor and fan motor

LOW NOISE MODE

The operating sound lowers from about 3 to 5 dB more than the rated value

The operating sound lowers from about 3 to 5 dB more than the

LOW NOISE MODE

* Automatic switching

Operation in low noise mode

*Capacity shortage

Normal operation

* Automatic switching

Operation in low noise mode

*Capacity shortage

Operation in low noise mode

*Capacity shortage

Normal operation

Not switched for 30 minutes after being once switched.

Capacity is enough even when switched to low noise mode

Not switched for 30 minutes after being once switched.

Capacity is enough even when switched to low noise mode

*

Capacity shortage condition

- When the compressor capacity is not enough (Compressor operates with upper limit capacity for long time.)

- When condensing capacity is not enough in cooling / cooling main operation (When the following condition keeps for 5 minutes, All of HEX in use and FAN spped can not increase and High pressure satu ration temperature 136.4 F (517.65psi) / 58 (3.57MPa))

- When evaporating capacity is not enough in heating / heating main operation (When the following condition keeps for 5 minutes,

All of HEX in use and FAN spped can not increase and low pressure saturation temperature 32 F ( 0 C))

02-14

2-8-5 Snow Falling Protection Fan mode - Default Setting -

The fan rotates compulsorily at the maximum speed when the outdoor temperature becomes 41 F(5 C) or less

The fan is rotated for 1 minute at the fan step upper limit at the interval set by PUSH SW. This mode ends when the outdoor temperature becomes 44.6 F (7 C) or more or operation starts.

When the Snow Falling protection is not neccesary, change the Function setting F2 -22 "Invalid"

(Operation contents)

Interval setting

setting (standard)

setting

Fan step

Max fan step

1 min 1 min 1 min 1 min

Int

PUSH SW setting

( F2 - 23 )

00

01

02

03

Int Int

Interval time Int (min)

30

5

10

20

Time

02-15

2-9 PROTECTIVE FUNCTION

2-9-1 Discharge temperature protection

Protective function

Discharge temperature protection 1

Discharge temperature protection 2

Discharge temperature protection 3

Discharge temperature protection 4

Detect device Operation

Discharge temp. sensor <TH1>

Cool Heat

Display

Starting conditions

Cooling/Cooling Main: Discharge temperature

above 203

Heating/Heating Main: Discharge temperature

above 216

Cooling/Cooling Main: Discharge temperature

Above 225

Discharge temperature Above 221

Discharge temperature Above 194

(Heating/ Heating main)

°F(95°C)

°F(102°C)

°F(107°C)

°F(105°C)

°F(90°C)

Release conditions

Below 194°F (90°C)

Below 207°F (97°C)

Below 221°F (105°F)

Below 212°F (100°F)

Below 185 (85°C)

°F

EEV3 + 30pls/30 sec.

Outdoor unit rotation execution

* After rotation has been executed once; it is executed every 15 minutes.

Compressor speed decrease

- 6rps every 30 sec. until it becomes the cancelation condition.

EEV’s of operating indoor unit in heating mode (incl. the Thermo OFF indoor units) gradually opens. (Thermo OFF indoor unit; max. 200 pls)

Discharge temperature protection 5

Discharge temperature protection stop

Discharge temp. sensor <TH1>

P1

EA11

Discharge temperature Above 203

Pattern 1: Discharge temperature

above 239

Pattern 2 Condition 1 generated 2 times within 40 minutes

°F(95°C)

°F(115°C)

Below 194°F (90°C)

3 minutes have elapsed and Discharge temperature below 176 (80°C)

Error reset (push button SW) executed after power reset

°F

EEV1 and EEV2 operating outdoor unit +10pls / 30sec

Corresponding outdoor unit stops

Corresponding outdoor unit stops (Permanent stop) & Error display

02-16

Discharge temperature protection -Summary-

Protection controlling range in Cooling mode

R

S

R

176 194 203 212 221 225 239 ( )

80 90 95 100 105 107 115 ( )

Note:

Target pressure controlling will be cancelled when the temperature is in the range color orange.

S

F C

DTP COMP STOP: Error Indication

DTP2: Outdoor unit rotation excution

DTP3: limited Compressor speed

controlling

DTP1: EEV3 Liquid injection controlling

Protection controlling range in Heating mode

R

176

80

R

185

85

R

S

194 203 212 216 221 239 ( )

90 95 97 100 102 105 115 ( )

207

S

DTP COMP STOP: Error Indication

DTP3: limited Compressor speed

controlling

DTP1: EEV3 Liquid injection controlling

DTP5: EEV1,EEV2 opening controlling

DTP4: Indoor unit EEV opening

controlling

F

C

Note:

Target pressure controlling will be cancelled when the temperature is in the range of orange.

02-17

2-9-2 High pressure protection

Protective function

High pressure protection 1

High pressure protection 2

Abnormal high pressure protection control

Detect device

High pressure sensor

Cool

Heat

Display

Start condition Release condition

Above 573psi (3.94MPa) 60 sec. elapsed and

Below 538psi (3.70MPa)

Pattern 1 Above 495 (539)* psi (3.40 (3.70)* MPa)

Pattern 2 Above 509 (553)*psi (3.50 (3.80)* MPa)

Pattern 1 Cooling/Cooling Main: Above 550psi (3.78MPa)

Heating /Heating Main: Above 471(515)*psi (3.24 (3.54)* MPa)

Pattern 2 Cooling/Cooling Main: Above 567psi (3.90MPa)

Heating /Heating Main: Above 480(524)*psi (3.30 (3.60)* Mpa)

60 sec. elapsed and Below 471 (515)*psi (3.24 (3.54)* MPa)

180 sec. elapsed and Below 486 (530)*psi (3.34 (3.64)* Mpa)

25 sec. elapsed and Below 538 psi (3.70Mpa)

25 sec. elapsed and Below 464(508)*psi (3.19 (3.49)* Mpa)

25 sec. elapsed and Below 550psi (3.78MPa)

25 sec. elapsed and below 3.24(3.54)* MPa

Operation

SV2 =>ON

SV1, SV2 =>ON

Compressor rotation speed rise up prohibit

Compressor rotation speed degrease - 18.5 rps (-15.0 rps) every30 sec. until cancel condition. ( ): L-Chassis

High Pressure Protection Stop 1

High pressure protection stop 2

High pressure sensor

High pressure switch

P2

EA41

P2

EA42

Pattern 1 Above 582psi (4.00MPa)

Pattern 2 Pattern 1 generated 3 times within 60 minutes

Pattern 1 Pressure SW operate (More than 611psi (4.20 MPa) detects)

Pattern 2 Pattern 1 generated 3 times within 60 minutes

*The value in ( ) , when the compressor is operating more than 30Hz.

5 minutes elapsed and Below 501psi (3.50MPa)

10minutes elapsed and below 501psi (3.50MPa)

5 minutes elapsed and pressure SW reset 466psi (3.2MPa)

10 minutes elapsed and pressure SW reset 466psi (3.2MPa)

Corresponding outdoor unit stops

Corresponding outdoor unit stops & Error display

Corresponding outdoor unit stops

Corresponding outdoor unit stops & Error display

02-18

High pressure protection -Summary-

Protection controlling range in cooling operaing mode

R

R S

SR

R

S

R

466 509 538 550 567 573 582 611 ( psi )

3.20 3.50 3.70 3.78 3.90 3.94 4.00 4.20 (MPa)

Target pressure controlling will be cancelled when the operating pressure is in the range of orange.

Note:

S

HPP Stop2 : Error Indication E A 42

HPP Stop1: Error Indication E A 41

HP Protection 1: SV2 ON

Abnromal HP protection ( Pattern 2) :

Abnromal HP protection ( Pattern 1) :

Compressor rotation speed lessen

18.5 rps (-15.0 rps) / 30sec. ( ): L-Chassis

Compressor rotation speed rise up prohibit

Protection controlling range in heating operaing mode

R

466psi /3.20Mpa

S

R

509psi / 3.50Mpa

R

S

R S

S

R

S

HPP Stop2 : Error Indication E A 42

HPP Stop1: Error Indication E A 41

HPP2 – Pattern2 : SV1 & SV2 ON

HPP2 -Pattern1 : SV2 ON

Abnromal HP protection ( Pattern 2) :

Compressor rotation speed lessen

-18.5 rps (-15.0 rps) / 30sec.

( ): L-Chassis

Abnromal HP protection ( Pattern 1) :

Compressor rotation speed rise up prohibit

508 515 524 530 538 553 582 611 ( psi)

3.49 3.54 3.60 3.64 3.70 3.80 4.00 4.20 ( MPa)

Target pressure controlling will be cancelled when the operating pressure is in the range of orange.

Note:

02 - 19

2-9-3 Low pressure protection

Protective function

Low pressure protection 1

Low pressure protection 2

Low pressure protection 3

Abnormal low pressure protection control

Detect device

Low pressure sensor

Cool Heat

Display

Start condition Release condition

Below 15psi (0.10MPa) 3minutes elapsed and

Above 25psi (0.17MPa)

After compressor started and 3 minutes elapsed and Below 94psi (0.18MPa)

Below 19psi (0.13MPa) and SH* above 50 F (10 C) and EEV1 (EEV2) is oper ating with less than 52pls.

*SH = Heat-Ex1(2) Gas temp - Low pressure saturation temp.

Below 23psi (0.16MPa) 3minutes elapsed and

3minutes elapsed and above 32psi (0.22MPa)

Except the start condition EEV1 (EEV2) set 52 plus

above 94psi (0.18MPa)

Operation

SV1 =>ON

Operating Indoor unit EEV forced controlling

-Thermo-OFF indoor unit: 450pls.

-Thermo-ON indoor unit: gradually opens.

Compressor rotation speed lessen in the limited time until above 25psi (0.17Mpa) (Compressor rotation speed rise up prohibit)

Low pressure protection stop

Low pressure sensor

EA51

Pattern 1

P3

Below 7psi (0.05MPa) or 15psi (0.10MPa) for 10min.

Pattern 2 Pattern 1 generated 5 times within 180 minutes

Low pressure protection - Summary -

Protection controlling range in cooling / heating operaing mode

R

S

*

* for a 10 Minutes

S

3minutes elapsed and Above 25psi (0.17Mpa)

Error reset (push button SW) executed after power turned on

Corresponding outdoor unit stops

Corresponding outdoor unit stops (Permanent stop) & Error display

LPP Stop : Error Indication E A 51

LP Protection1 : SV1 ON

LP protection 3: EEV1(2) set as 52 pls

*When EEV puls is less than 52 pls.

(Only heating/Heating Main)

Abnormal LP protection :

Compressor rotation speed forced cntrolling

S

R

LP Protection2 :

Indoor unit (Heating/ Thermo OFF) EEV foced controlling

7 15 19 23 25 94 32 (psi)

0.05 0.10 0.13 0.16 0.17 0.18 0.22 (MPa)

Note: Target pressure controlling will be cancelled when the operating pressure is in the range of orange.

02-20

2-9-4 Heatsink temperature protection

Protective function

Heat sink temperature protection 1

Heat sink temperature protection 2

Heat sink temperature protection 3

Heatsink temperature protection stop

Detect device

Heatsink temp sensor

Cool Heat

Display

EAC4

Start condition

Above 167

Above 181

Above 189

(Pattern 1

Above 196

Pattern 2 Pattern 1 generated 3 times within 60 minutes

°F (75°C)

°F (83°C)

°F (87°C)

°F (91°C))

Release condition

Below 167°F (75°C)

Below 181

Below 167°F (75°C)

3 minutes elapsed, and below 167

10 minutes elapsed, and below 167

°F (83°C)

°F(75°C)

Operation

Cancel Fan speed step down.

Fan speed up 1 step every 2 minutes.

Compressor rotation speed lessens- 10 rps/ 120sec.

Compressor stops

Compressor stop and Error indication.

2-9-5 Compressor temperature protection

Protective function

Compressor temperature protection stop

2-9-6 O.U Heat - Ex.1(2) Gas Temp. abnormal stop

Protective function

O.U Heat - Ex. 1(2) Gas Temp. abnormal stop

Detect device

Compressor temp. sensor <TH11>

Detect device Operation

Heat-Ex 1(2) Gas temp. Sensor <TH7,TH8>

Cool

Cool Heat

Display

Heat

P4

EA31

Display Start condition Release condition

EA63 (Heat Ex1)

EA64 (Heat Ex2)

Start condition Release condition

Pattern 1 Compressor temperature

above 239

Pattern 2 Pattern 1 generated 2 times within 40 minutes

°F(115°C)

Heat Ex.1(2) gas temp. sensor TH7 (TH8) for use as condenser (4Way valve: Off, EEV: Open) is detected abnormally-low to High pressure saturated temp. for 4 minutes or more.

3 minutes have elapsed and Discharge temp.

below 176

Error reset (push button SW) executed after power reset.

°F(80°C)

Error reset (push button SW) executed after power turned on

Operation

Corresponding outdoor unit stops

Corresponding outdoor unit stops (Permanent stop) & Error display

System Stop and Error indication

02-21

2-9-7 Over current protection

Protective function

Overcurrecnt protection stop

Detect device Operation

Inverter PCB Embeded

Cool Heat

Display

E941

(permanent stop)

E931

(permanent stop)

Start condition Release condition

Over current protection circuit detects (Abnormal current) in 5 times during compressor operatng.

Over current protection circuit detects (Abnormal current) at the compressor start-up.

Error reset (push button SW) executed after power turned on

Compressor stop and Error indication "Trip Detection"

Compressor stop and Error indication "Inverter Compressor Start up Error"

2-9-8 Compressor Frequency Maximum setting protection

Protective function Detect device Operation

Compressor Frequency Maximum setting protection

Filter PCB Current transformer

Cool

Heat

Display

Start condition Release condition

Pattern 1

Current value more than :

28.7A ( 6ton, 8ton )

35.5A (10ton )

Pattern 2

Current value more than:

29.7A ( 6ton, 8ton)

36.5A (10ton)

Current value less than the start condition

Current value less than

the start condition

Compressor speed rise up prohibited

Compressor speed lowered

2-9-9 Compressor compress ratio protection

( ) : L-Chassis

Protective function Detect device Operation

Compressor compression ratio protecion

High pressure sensor and Low pressure sensor

Cool

Heat

Display

*1 Compress ratio:

Start condition Release condition

Compression ratio* above 9 (8)

3 minutes elapsed, and below 8 (7.5)

SV1 => ON

02-22

2-9-10 Fan Motor, Motor Driver abnormal stop protection

Protective function

Fan Motor lock protection stop

Fan Motor temperature protection stop

Fan Motor driver protection stop

Detect device

Embeded device

Cool Heat

Display

E97. 1

E97. 5

E97. 9

Start condition Release condition

1. When the outdoor fan rotation speed is less than 100rpm in 20seconds after fan motor starts.

2. After the fan motor restarts, and when the condition 1 is repeated consecutively 4 times.

1. When the FAN motor failed the operation more than 470rpm.

2. After the fan motor restarts, and if the fan motor cannot operate at 470rpm or more, or the condition 1 is repeated consecutively 3 times within 60 minutes.

When the Driver PCB detects the following abnormalities, Driver PCB defective, Fan motor defective (short circuit), Main PCB defective (DC output abnormal), lose connection, or Disconnecting wire.

Error reset (push button SW) executed after power turned on

Operation

Fan Motor and Compressor Stop Error indication

2-9-11 EEV Coil abnormal Stop

Protective function

Indoor unit EEV coil abnormal Stop

Outdoot unit EEV coil 1,2,3 abnormal Stop

Detect device

Indoor unit Controller PCB EEV drive Circuit

Outdoor unit Controller PCB EEV drive Circuit

Cool Heat

Display

Error on IU. LED blinks Operation 5 times Timer 2 times

Error on OU. 7-Seg display

E9A“X“ Coil No, “X“

Start condition Release condition

When the EEV coil drive circuit is open circuit

Drive circuit detects normal condition and Power reset

Operation

System Stop Error indication “I.U Coil 1 Error”

System Stop Error indication “CoiX1 Error” Coil No, “X“

02-23

3. INDOOR UNIT OPERATION

INDOOR UNIT OPERATION

3-1 FAN CONTROL

3-1-1 Fan Speed Setting

Fan speed setting

Press the FAN CONTROL button to set the fan speed.

AUTO

HIGH MED LOW

3-1-2 "AUTO" Position

1. COOL OPERATION

The fan speed is determined automatically in accordance with the condition "(TR(corrected room temperature) - TS (corrected set temperature)" as shown on the right. However, the fan speed zone is determined in the manner as the room temperature increases for the following cases.

(1) When the TS is changed. (2) When the operation mode is changed from other mode to "COOL". (3) When the fan control is changed from other position to "AUTO".

2. HEAT OPERATION

Same as Cooling operation, fan speed is decided by the difference between the room temperature and the set temperature.

2°F(1°C)

- 4°F(-2°C)

T

TR-TS

R-TS

TR-TS

- 4°F(-2°C)

Fan speed zone

4°F(2°C)

2°F(1°C)

When the room temperature decreases

Fan speed zone

-5°F(-3°C)

Hi zone

Med zone

Low zone

Med zone

TR-TS

4°F(2°C)

TR-TS

When the room

temperature increases

TR-TS

- 2°F(-1°C)

5°F(3°C)

TR-TS

4°F(2°C)

- 2°F(-1°C)

- 4°F(-2°C)

TR-TS

5°F(3°C)

TR-TS

-5°F(-3°C)

When the room temperature decreases

Hi zone

TR-TS

When the room

temperature increases

- 4°F(-2°C)

3. DRY OPERATION

The indoor fan always rotates at "Lo" speed.

 Expansion

 valve

 Indoor fan

motor

(1) The indoor fan starts operation 5 seconds after the electric expansion valve opens. However, when the indoor unit just starts its operation or the operation mode is changed from other to "DRY" and the refrigerant circulation is not stopped, the fan will rotate immediately without a delay time of 5 seconds. (2) The indoor fan will stop in 30 seconds when the refrigerant circulation stops. (3) The indoor fan will stop immediately when the indoor unit is stopped by pushing the stop button or by a setting of ON timer. (4) When the refrigerant circulation is stopped due to a lower room temperature for more then 3 minutes, the fan will rotate 1 minutes at intervals of 3 minutes. (5) When the indoor unit just starts its operation or the operation mode is changed from other to "DRY" and the refrigerant circulation is stopped, the fan will rotate for 1 minute and then it will operate according to the statement (4).

OPEN CLOSE

ON OFF

ON

30s

ON

ON ON ON

5s

30s

2min30s

1min

3min

ON

TIME -->

5s

4. FAN OPERATION

The indoor fan always rotates at "Lo" speed.

* The above explanation may differ from the actual operating condition when the compressor is controlled under protection function.

03-01

3-2 MASTER CONTROL

3-2-1 Operation Mode Control

(1) Mode setting

Each possible operation mode in each connectable type is controlled as below.

RB : I.U = 1 : 1

RB : I.U = 1 : 2 8

(2) Cool, Dry and Heat Mode

Each operation mode is controlled as below.

Cool Dry

Indoor fan motor

Operates according to the

AIRFLOW MODE setting.

RB : I.U = 0 : 1

See the fan control page.

Connectable type

Free Cool / Heat

Fix Cool / Heat

Only Cool

: Mode available : Mode unavailable

X

: Mode available when the priority given to administrative indoor unit.

*1

: Mode available between Dry and Cool.

*2

Cool Dry Heat

X

Heat

Operates according to the

AIR FLOW-MODE setting, and

besides cold air prevention

operation

Operates according to the

AIR FLOW-MODE setting.

Auto

*1

*2

Custom Auto

Fan

*1

X

Drain pump

Electrical expansion valve

Pulse controlled by the temp-

erature difference calculation

and freeze prevention control

(3) Stop mode

Indoor fan motor : OFF Electric expansion valve Drain pump

Turns ON-OFF by the drain pump control function

Pulse controlled by the

temperature difference

calculation and freeze

prevention function

Pulse controlled by the tempe-

rature difference.

: Stop pulse : Turns ON-OFF by the drain pump control function

03-02

Stop pulse

(4) Priority mode ( for connectable type ) The purpose of the priority mode is to restrict operation commands (heating, cooling, dry) from the connected indoor units. There are 3 priority modes of Neutral, Cooling Priority, and Heating Priority. The operation modes restricted by each of these modes are as follows:

Priority mode

Neutral

Cooling priority

Heating priority

Restricted operation mode

No restrictions

Heating

Cooling, dry

Priority mode decision methods

Method 1. (Default value) The initial priority mode is made Neutral and is shifted to Cooling Priority when cooling and to Heating Priority when heating depending on which operation mode (cooling, heating) was input first. After shifting to Cooling Priority or Heating Priority, the priority mode shifts to Neutral only when there was a Stop input from all the indoor units in the same RB Group.

Neutral

Cooling priority

Heating priority

Method 2. (Management by RB unit) Operation mode management is made "Management by RB unit" by RB unit DIP-SW (field setting). The priority mode shifts to Cooling Priority or Heating Priority in accordance with input from the RB unit regardless of the current mode.

Cooling priority

Heating priority

Method 3. (Management by indoor unit) Operation mode management is made "Management by indoor unit" by RB unit DIP-SW (field setting). Then the master indoor unit is set by wired remote controller. Thereupon the priority mode shifts to Cooling Priority or Heating Priority in accordance with input from the master indoor unit regardless of the current priority mode. The priority mode is fixed at either cooling or heating even if the master indoor unit stops Cooling/Heating switching can be performed by the master indoor unit only.

Cooling priority

Heating priority

(5) Opposite operation mode ( for connectable type ) When the operation mode commanded from an indoor unit (remote controller) and the operation mode allowed by the system (cooling and dry operation for cooling only type and operation mode allowed by priority mode for heat pump type) do not match, it is indicated by blinking of an LED.

Timer lamp: 3 secs ON/1 sec OFF repeated

03-03

3-2-1 Operation Mode Control for Outdoor air unit

(1) Mode setting

Each possible operation mode in each connectable type is controlled as below.

RB : I.U = 1 : 1

RB : I.U = 1 : 2 8

(2) Cool and Heat Mode

Each operation mode is controlled as below.

Cool

Outdoor air unit fan motor

Drain pump

Electrical expansion valve

Operates according to the

HIGH MODE setting.

Pulse controlled by the

temperature difference

calculation and

freeze prevention control

Connectable type

Free Cool / Heat

Fix Cool / Heat

Only Cool

: Mode available : Mode unavailable

X

Cool Dry Heat

RB : I.U = 0 : 1

Heat

Operates according to the

HIGH MODE setting.

Operates according to the

HIGH MODE setting.

Fan

Turns ON-OFF by the drain pump control function

Pulse controlled by the

temperature difference.

Stop pulse

Fan

X

Solenoid valve

Closed at all times

(3) Stop mode

Outdoor air unit fan motor : OFF Electric expansion valve Drain pump

Solenoid valve : Closed

Opened at thermostat off

and compressor on.

Closed at other operation.

Closed at all times

: Stop pulse : Turns ON-OFF by the drain pump control function

03-03

+1

(4) Priority mode ( for connectable type ) The purpose of the priority mode is to restrict operation commands (heating, cooling) from the connected outdoor air units. There are 3 priority modes of Neutral, Cooling Priority, and Heating Priority. The operation modes restricted by each of these modes are as follows:

Priority mode

Neutral

Cooling priority

Heating priority

Restricted operation mode

No restrictions

Heating

Cooling

Priority mode decision methods

Method 1. (Default value) The initial priority mode is made Neutral and is shifted to Cooling Priority when cooling and to Heating Priority when heating depending on which operation mode (cooling, heating) was input first. After shifting to Cooling Priority or Heating Priority, the priority mode shifts to Neutral only when there was a Stop input from all the indoor units in the same RB Group.

Neutral

Cooling priority

Heating priority

Method 2. (Management by RB unit) Operation mode management is made "Management by RB unit" by RB unit DIP-SW (field setting). The priority mode shifts to Cooling Priority or Heating Priority in accordance with input from the RB unit regardless of the current mode.

Cooling priority

Heating priority

Method 3. (Management by indoor unit) Operation mode management is made "Management by indoor unit" by RB unit DIP-SW (field setting). Then the master indoor unit is set by wired remote controller. Thereupon the priority mode shifts to Cooling Priority or Heating Priority in accordance with input from the master indoor unit regardless of the current priority mode. The priority mode is fixed at either cooling or heating even if the master indoor unit stops Cooling/Heating switching can be performed by the master indoor unit only.

Cooling priority

Heating priority

(5) Opposite operation mode ( for connectable type ) When the operation mode commanded from an indoor unit (remote controller) and the operation mode allowed by the system (cooling and dry operation for cooling only type and operation mode allowed by priority mode for heat pump type) do not match, it is indicated by blinking of an LED.

Timer lamp: 3 secs ON/1 sec OFF repeated

03-03

+2

3-2-2 Auto Changeover Heating / Cooling Operation

[Function available Indoor unit(s)]

Connectable type : All Indoor units Connectable type : Administrative indoor unit (Management Indoor unit) Refer to the setting Method

Setting Method

1. Switch operation mode management to "Management by indoor unit" by RB unit DIP-SW.

2. Set the master indoor unit by wired remote controller.

3. Judge cooling/heating by the difference between the master indoor unit's setting temperature and the room temperature.

AUTO CHANGEOVER operation

Operation flow chart

START

Room temp.

Ts+ 4°F(2°C) ?

NO

YES

or operation command other than

Room temp.

Ts -4°F(-2°C)?

HEATING OPERATION

Thermostat remains

in OFF state for 6 minutes or

longer?

System stops

auto changeover operation?

NO

YES

NO

YES

TS : Setting temperature

in OFF state for 6 minutes or

or operation command other than

auto changeover operation?

COOLING OPERATION

Thermostat remains

longer?

NO

System stops

YES

NO

03-04

3-2-2 Auto Changeover Heating / Cooling Operation for Outdoor air unit

[Function available Outdoor air unit(s)]

Connectable type : All Outdoor air units Connectable type : Administrative outdoor air unit (Management Outdoor air unit).

Refer to the setting Method

Setting Method

1. Switch operation mode management to "Management by outdoor air unit" by RB unit DIP-SW.

2. Set the master outdoor air unit by wired remote controller.

3. Judge cooling/heating by the difference between the master outdoor air unit's setting temperature and the suction airflow temperature

AUTO CHANGEOVER operation

Operation flow chart

START

YES

Suction airflow temp.

Ts+9°F(+5°C) ?

NO

Suction airflow temp.

Ts- 9°F(-5°C) ?

YES

HEATING OPERATION

Thermostat remains

in OFF state for 6 minutes or

longer?

NO

System stops

or operation command other than

auto changeover operation?

YES

TS : Setting temperature

in OFF state for 6 minutes or

or operation command other than

COOLING OPERATION

Thermostat remains

longer?

NO

System stops

auto changeover operation?

YES

NO

03-04

NO

+1

3-2-3 Auto Changeover Cooling / Dry Operation

[Function available Indoor unit(s)]

Connectable type

Judge cooling/dry by the difference between the setting temperature and the room temperature. In case of group connection of cooling only indoor unit, the room temperature sensor in wired remote controller manages the operating mode.

AUTO CHANGEOVER operation (COOLING ONLY TYPE )

Operation flow chart

: Cooling Only indoor unit

START

TS : Setting temperature

Yes

Room temp.

Ts+4°F(2°C)?

Yes

COOLING OPERATION

Room temp.

Ts+2°F(1°C) ?

Room temp.

Ts+4°F(2°C)?

NO

Refrigerant

NO

circulation

stopped?

(due to temp.)

Yes

Refrigerant

started?

(due to temp.)

NO

DRY OPERATION

NO

Yes

03-05

3-2-4 Custom Auto Heating / Cooling Operation

[Function available in follwing conmditions]

- Remote controller type: UTY-RNRU

- Remote sensor in use

- Prohibit the central function from the Central controller *Reccomend

CUSTOM AUTO Operation

Operation flow chart

START

NO

T set.C - T set.H 6°F

YES

T set.C: Setting temp. in Cool T set.H: Setting temp. in Heat

Room temp.

1/2 of DB + 3.0°F

NO

1/2 of DB - 3.0°F

YES

NO

YES

DB: Dead Band*

Room temp.

T set.C + 1.0°F

NO

T set.H - 1.0°F

YES

NO

HEATING OPERATION

YES

*Dead Band(DB) means between T set.C and T set.H, however the setting paramater of Dead Band always has a priolity.

Ex) T set. C: 82°F, T set. H : 78°F DB setting: 6°F => T set. C: 82°F, T set. H: 76°F (DB will be kept from Tset.C basis)

*When the outdoor unit(s) selected the operation mode at once, the selected operation mode will be kept for 12minutes minimum.

Thermostat remains

in OFF state for 6 minutes or

or operation command other than

auto changeover operation?

longer?

NO

System stops

NO

03-06

COOLING OPERATION

Thermostat remains

in OFF state for 6 minutes or

longer?

NO

System stops

or operation command other than

auto changeover operation?

NO

YES

3-2-4 "COOL" Position

When using the cooling mode, set the temperature to a value lower than the current room temperature, otherwise the indoor unit will not start the cooling operation and only the fan will rotate.

An example for COOLING TEMPERATURE CONTROL time chart (Manual setting)

Ts +1°F(+0.5°C)

 Temperature

Ts -1°F(-0.5°C)

 Refrigerant

flow

 Opening of

EEV

 Indoor fan*1

Ts

3Min.

ON OFF

100% 0%

ON OFF

Ts : Corrected setting temperature

T

R : Corrected room temperature

*1 When Cooling Thermo-OFF(Fuction setting) activates, the Indoor fan stops under the temperature controlling. (The room temperature detection in the wired remote controller has to be activated.)

3-2-5 "HEAT" Position

Ts +1°F(+0.5°C)

Ts -1°F(-0.5°C)

TR

: The thres hold temperature of start of refrigrant flow

: The thres hold temperature of stop of refrigrant flow

(1) When using the heating mode, set the temperature to a value higher than the current room temperature, otherwise the indoor unit will not start the heating operation. (2) After the start of heating operation, the fan of indoor unit will not rotate until the heater exchange is warmed up to blow out warm air.

During defrosting, the OPERATION indicator lamp flashes 6 sec. ON and 2 sec. OFF, and repeat. The heating operation

(3)

will be temporarily interrupted.

An example for HEATING TEMPERATURE CONTROL time chart (Manual setting)

Ts +1°F(+0.5°C)

 Temperature

Ts -1°F(-0.5°C)

Refrigerant



flow

Opening of



EEV

Indoor fan*1



Ts

ON OFF

100% 0%

ON OFF

1Min.

4Min.

Ts : Corrected setting temperature

R : Corrected room temperature

T

: Duration of cold air prevention*2

1Min.

4Min.

Ts +1°F(+0.5°C)

Ts -1°F(-0.5°C)

: The thres hold temperature of start of refrigrant flow

: The thres hold temperature of stop of refrigrant flow

4Min.

1Min.

R

T

*1 When the room temperature detection in the wired remote controlle activates, the Indoor fan stops at the thermo OFF condition. *2 When the cold air prevention (Fuction setting) invaldiates, the Indoor fan keeps the operation by the setting.

03-06

3-2-5 "COOL" Position for Outdoor air unit

When using the cooling mode, set the temperature to a value lower than the discharge airflow temperature, otherwise the outdoor air unit will not start the cooling operation and only the fan will rotate.

An example for COOLING TEMPERATURE CONTROL time chart (Manual setting)

Outdoor temp.

 Discharge airflow

Temperature

 Refrigerant

flow

 Opening of

EEV

 Outdoor air unit

fan

Ts

Ts - 9°F (Ts - 5°C)

ON OFF

100%

0%

ON OFF

Excess capacity area

Thermistor ON (6 minutes)

Ts : Corrected setting temperature

Thermistor OFF (3 minutes)

Ts + 1°F (Ts + 0.5°C) : The thres hold temperature of start of refrigerant flow Ts - 9°F (Ts - 5°C) : The thres hold temperature of stop of refrigerant flow

Thermistor ON (6 minutes)

3-2-6 "HEAT" Position for Outdoor air unit

(1) When using the heating mode, set the temperature to a value higher than the discharge airflow temperature, otherwise the outdoor air unit will not start the heating operation.

During defrosting, the OPERATION indicator lamp flashes 6 sec. ON and 2 sec. OFF, and repeat. The heating operation

(2)

will be temporarily interrupted.

An example for HEATING TEMPERATURE CONTROL time chart (Manual setting)

Excess capacity area

Ts +9°F (Ts +5°C)

 Discharge airflow

Temperature

Outdoor temp.

 Refrigerant

flow

 Opening of

EEV

Ts

ON OFF

100%

0%

Thermistor ON (6 minutes)

Thermistor OFF (3 minutes)

5 minutes has passed at excess capacity area

Thermistor ON (6 minutes)

5 minutes has passed at excess capacity area

 Outdoor air unit

fan

ON OFF

Ts : Corrected setting temperature

Ts - 1°F (Ts - 0.5°C) : The thres hold temperature of start of refrigerant flow Ts + 9°F (Ts + 5°C) for 5 minutes or more : The thres hold temperature of stop of refrigerant flow

+1

03-07

3-3 LOUVER CONTROL

(1) ADJUSTING THE DIRECTION OF AIR CIRCULATION

Instructions relating to heating ( ) are applicable only to heat pump type outdoor unit.

Begin air conditioner operation before performing this procedure.

Vertical Air Direction Adjustment

This instructions are applicable to "LARGE CEILING TYPE", "UNIVERSAL FLOOR/CEILING TYPE", "CASSETTE TYPE", "WALL MOUNTED TYPE" and "COMPACT WALL MOUNTED TYPE".

Press the VERTICAL AIR FLOW DIRECTION SET button.

Example : When set to vertical air direction.

Press the VERTICAL AIRFLOW DIRECTION button. The temperature display will change to the vertical airflow direction setting display.

Press the VERTICAL AIRFLOW DIRECTION button to change the vertical louvre position. The position number will appear on the display.

Cooling & Dry : 1 , 2 , 3 , 4

Heating : 1 , 2 , 3 , 4

LARGE CEILING TYPE

1

2

3

4

UNIVERSAL FLOOR/CEILING TYPE

1

2

3

COMPACT WALL MOUNTED TYPE

1

2

3

4

WALL MOUNTED TYPE

4

CASSETTE TYPE

1

2

3

4

1

2

3

4

Adjustable Position (All Mode) Position setting is available by only wiress remote controller

1 , 2 , 3 , 4 ,

Use the air direction adjustments within the ranges shown above.

The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected.

During Cooling mode : Horizontal flow During Heating mode : Downward flow

During AUTO mode operation, for the first minute after beginning operation, airflow will be horizontal ,

1

(Large Wall mounted type: )

4

1

the air direction cannot be adjusted during this period.

03-07

Horizontal Air Direction Adjustment

This instructions are applicable to "LARGE CEILING TYPE", "UNIVERSAL FLOOR/CEILING TYPE" and "WALL MOUNTED TYPE".

Press the HORIZONTAL AIR FLOW DIRECTION SET button.

Press the HORIZONTAL AIRFLOW DIRECTION button. The temperature display will change to the horizontal airflow direction setting display.

Press the HORIZONTAL AIRFLOW DIRECTION button to change the horizontal louvre position. The position number will appear on the display.

Cooling & Dry : 1 , 2 , 3 , 4 , 5

Heating : 1 , 2 , 3 , 4 , 5

Example : When set to horizontal air direction.

LARGE CEILING TYPE

1

5

2

4

3

WALL MOUNTED TYPE

UNIVERSAL FLOOR/CEILING TYPE

3

2

1

4

5

(2) SWING OPERATION

Instructions are applicable to "LARGE CEILING TYPE", "UNIVERSAL FLOOR / CEILING TYPE", "CASSETTE TYPE", "WALL MOUNTED TYPE" and "COMPACT WALL MOUNTED TYPE".

Begin air conditioner operation before performing this procedure.

To select Vertical airflow SWING Operation

This instructions are applicable to "LARGE CEILING TYPE", "UNIVERSAL FLOOR/CEILING TYPE", "CASSETTE TYPE", "WALL MOUNTED TYPE" and "COMPACT WALL MOUNTED TYPE".

Press the VERTICAL SWING button for more than two seconds.

The remote controller's Vertical Swing Display will light up. In this mode, the UP/DOWN air direction flaps will swing automatically to direct the air flow both up and down.

Example : When set to vertical swing.

To Stop Vertical airflow SWING Operation

Press the VERTICAL SWING button for more than two seconds once and again.

The remote controller's Vertical Swing Display will go out. Airflow direction will return to the setting before swing was begun.

03-08

Instructions are applicable to "LARGE CEILING TYPE", "UNIVERSAL FLOOR / CEILING TYPE", "CASSETTE TYPE", "WALL MOUNTED TYPE", and "COMPACT WALL MOUNTED TYPE".

About Vertical Airflow SWING Operation

The SWING operation may stop temporarily when the air conditioner's fan is not operating, or when operating at very low speeds.

The swing operation is not available depending on the model. Please refer to the operating manual for the indoor unit.

To select Horizontal Airflow SWING Operation

This instructions are applicable to "LARGE CEILING TYPE", "UNIVERSAL FLOOR / CEILING TYPE", "WALL MOUNTED TYPE" and "CEILING WALL TYPE".

Press the HORIZONTAL SWING button for more than two seconds.

The remote controller's Horizontal Swing Display will light up. In this mode, the RIGHT/LEFT air direction louvers will swing automatically to direct the airflow both right and left.

Air swing range

Air flow direction set Range of swing

1

2

3

4

1 to 4 (All range)

*Large Wall Mounted type 1 to 5

Example : When set to horizontal swing.

To stop Horizontal airflow SWING Operation

Press the HORIZONTAL SWING button for more than two seconds once and again.

The remote controller's Horizontal Swing Display will go out. Airflow direction will return to the setting before swing was begun.

About Horizontal Airflow Swing Operation

Left and right swing range can be changed in 3 steps by field setting.

The SWING operation may stop temporarily when the air conditioner's fan is not operating, or when operating at very low speeds.

The swing operation is not available depending on the model. Please refer to the operating manual for the indoor unit.

Left and right swing range

Range of swing

1 to 5 (All range)

1 to 3

3 to 5

Function Number Setting Value

24

( Factory setting)

00

01

02

03-09

3-4 ELECTRONIC EXPANSION VALVE CONTROL

1. Initialization

When the power is turned ON. When it has passed the limited time since the last initialization.

2. Operation Control

When indoor unit stopping by Thermo-OFF condition.

Outdoor unit Condition

OFF

Cooling

Heating

When starting up

(Cooling) Move to the cooling control base pulse in steps. (Heating) Move to the heating control base pulse in steps.

Automatic operatic control

Automatic PI control is performed based on the indoor unit heat exchanger outlet temp and inlet temp.

Room temperature control

The room temperature is controlled so that it reaches to the set-up temperature based on the difference between the room temperature and the set-up temperature, and the change of indoor unit temperature. Cooling operation: if the room temperature becomes 0.5 C lower than the set-up temperature, EEV is fully closed. Heating operation: if the room temperature becomes 0.5 C Higher than the set-up temperature, EEV is slightly opened. *In case of protection controlling, EEV keeps open position.

EEV Condition

Fully closed

Slightly open

3. Special Control

Oil recovery operation : Controlled pulse(Maximum 1400 puls) Test run operation : Controlled pulse. Freeze prevention control : Fully closed. Vacuuming operation : Fully open. Defrost operation : Controlled pulse(Maximum 1400 puls)

3-5 DRAIN PUMP OPERATION

(1) When cooling and refrigerant circulation starts, the drain pump starts simultaneously. (2) The drain pump operates continuously for 3 minutes after the refrigerant circulation stopped. (3) When the refrigent circulation is stopped by a start of indoor heat exchanger frost prevention

operation, the drain pump will turn off in 1 hour after the end of indoor heat exchanger frost prevention operation.

(4) When the water level in the drain pan rises up and then the float switch functions:

Microcomputer stops the refrigerant circulation and indoor fan motor operation.

1 2

Drain pump operates continuously for 3 minutes after the float switch is turned off.

(Almost condensing water may be drained) (5) When the float switch turns ON continuously for 3 minutes, 'FAILURE INDICATION' operates. (6) When the float switch turns OFF within 3 minutes, the unit starts cooling operation.

03-10

3-4 ELECTRONIC EXPANSION VALVE CONTROL for Outdoor air unit

1. Initialization

When the power is turned ON. When it has passed the limited time since the last initialization.

2. Operation Control

When indoor unit stopping by Thermo-OFF condition.

Outdoor unit Condition

OFF

Cooling

Heating

When starting up

(Cooling) Move to the cooling control base pulse in steps. (Heating) Move to the heating control base pulse in steps.

Automatic operatic control

Automatic PI control is performed based on the indoor unit heat exchanger outlet temp and inlet temp.

Discharge airflow temperature control

The discharge airflow temperature is controlled so that it reaches to the set-up temperature based on the difference between the discharge airflow temperature and the set-up temperature. Cooling operation: 1) If the discharge airflow temperature becomes 9°F (5°C) lower than the set-up temperature, EEV is fully closed.

2) If the suction airflow temperature becomes 1°F (0.5°C) lower than the set-up temperature, EEV is fully closed. Heating operation: 1) If the discharge airflow temperature becomes 9°F (5°C) higher than the set-up temperature for 5 minutes or more, EEV is fully closed.

2) If the suction airflow temperature becomes 1°F (0.5°C) higher than the set-up temperature, EEV is fully closed.

EEV Condition

Fully closed

3. Special Control

Oil recovery operation : Controlled pulse(Maximum 1400 puls) Test run operation : Controlled pulse. Freeze prevention control : Fully closed. Vacuuming operation : Fully open. Defrost operation : Controlled pulse(Maximum 1400 puls)

3-5 DRAIN PUMP OPERATION for Outdoor air unit

(1) When cooling and refrigerant circulation starts, the drain pump starts simultaneously. (2) The drain pump operates continuously for 3 minutes after the refrigerant circulation stopped. (3) When the refrigent circulation is stopped by a start of indoor heat exchanger frost prevention

operation, the drain pump will turn off in 1 hour after the end of indoor heat exchanger frost prevention operation.

(4) When the water level in the drain pan rises up and then the float switch functions:

Microcomputer stops the refrigerant circulation and indoor fan motor operation.

1 2

Drain pump operates continuously for 3 minutes after the float switch is turned off.

(Almost condensing water may be drained) (5) When the float switch turns ON continuously for 3 minutes, 'FAILURE INDICATION' operates. (6) When the float switch turns OFF within 3 minutes, the unit starts cooling operation.

03-11

+1

3-6 FUNCTION

3-6-1 Auto Restart

The air conditioner restarts with the previous setting operation.

3-6-2 Freeze Prevention Control

The icing of the indoor heat exchanger is prevented during the cooling and dry mode operation.

(1) Starting Condition Compressor is operation more than 3 minutes. When "Heat exchanger inlet temperature T Compressor is operation more than 3 minutes. When "Heat exchanger outlet temperature T

(2) Operation EEV is closed. Fan is at the setting amount.

(3) Completing Condition Heat exchanger inlet and middle temperature T After more than 5 minutes

A" continues *4 minutes or more.

A" continues 4 minutes or more.

B

Drain pump turns off at 60 minutes past the completion of the icing protection operation.

*

TA

1°C

TB

7°C

3-6-3 Oil Recovery Operation / Defrost Operation

[Oil recovery operation / Defrost operation] : It periodically returns the residual refrigerant ion oil in the indoor unit and the connection piping back to the outdoor unit , and prevents the compressor oil level from decreasing.

Indoor unit LED : Operation LED

6 sec ON 2 sec OFF Blinking

Indoor fan : Same operation before oil recovery operation in cooling operation or dry operation.(Heating operation: Stop)

Indoor EEV : Control pulse

During the above operation, a refrigerant noise might hear from the indoor unit.

03-11

3-6-4 Outdoor temperature protected operation for Outdoor air unit

1. COOL OPERATION

The contents of operation is controlled as following based on the suction airflow temperature.

a) Operation mode management is made "Management by indoor unit", and outdoor air unit is master indoor unit.

b) Cases Other than (a)

Suction airflow temperature rises

68°F (20°C)

50°F

(10°C)

23°F (-5°C)

Forced thermostat off and Fan off

Suction airflow temperature drops

Cooling operation

Fan operation

Heating operation

64°F (18°C)

41°F (5°C)

19°F (-7°C)

Suction airflow temperature rises

Cooling operation 68°F (20°C)

50°F (10°C)

Forced thermostat off and Fan off

Suction airflow temperature drops

Fan operation

2. HEAT OPERATION

The contents of operation is controlled as following based on the suction airflow temperature.

Suction airflow temperature rises

70°F (21°C)

23°F (-5°C)

Forced thermostat off and Fan off

Fan operation

Heating operation

Suction airflow temperature drops

66°F (19°C)

19°F (-7°C)

64°F (18°C)

41°F (5°C)

3. FAN OPERATION

The contents of operation is controlled as following based on the suction airflow temperature.

a) Operation mode management is made "Management by indoor unit", and outdoor air unit is master indoor unit.

Suction airflow temperature rises

50°F (10°C)

23°F (-5°C)

Forced thermostat off and Fan off

Fan operation

Heating operation

Suction airflow temperature drops

41°F (5°C)

19°F (-7°C)

03-12

+1

b) Cases Other than (a)

Suction airflow temperature rises

Fan operation 50°F (10°C)

Forced thermostat off and Fan off

Suction airflow temperature drops

41°F (5°C)

RB UNIT OPERATION

3-7 RB UNIT COMPORNENT

3-7-1 Position of Solenoid coil

Single type

UTP-RX01AH UTP-RX01BH

SV4

SV3 SV2

SV1

Multi type

UTP-RX04BH

SV4

SV5

SV3 SV2

SV1

SV4

SV5

SV3 SV2

SV1

SV4

SV5

SV3 SV2

SV4

SV5

SV3 SV2

SV1

UTP-RX01CH

SV4

SV6

SV4

SV5

SV3 SV2

SV5

SV3 SV2

SV1

Color of Connector

SV1

SV1 SV2 SV3 SV4 SV5 SV6

Green Blue Black White Red Yellow

3-7-2 Position of Solenoid valve

( ) : Indication on the Service Tool

Liquid Line

CP3

ST

High Pressure Gas Line

Low Pressure Gas Line

CV

CP1

SV3

(SVB1)

SV2

(SVB2)

SV1

(SVD1)

CP2

SV4

(SVS)

SV5

(SVS)

SV6

(SVS)

EEV

ST

Indoor unit Gas Pipe

Service Tool Display

SVS

*

SVB1

SVD1

SVB2

03-12

LP

*SV5, SV6 are not indicated on the Service tool

HP

3-7-3 PCBs layout

Single type

DIP SW SET 1

-Upper side-

SV connector

Multi type

Main PCB

Error indication LED (Red)

Power supply indication LED (Green)

Transmission PCB1

Transmission PCB2

- Upper side -

SV connector

DIP SW SET 1

DIP SW SET 2

3-7-4 PCB component

OU.

RB Unit

IU.

Transmission PCB2

Main PCB: Pulse signal communication between Transmission PCB1 and Transmission PCB2 Transmission PCB1: Pulse signal communication between IU. and RB Main Transmission PCB2: Pulse signal communication between OU. and RB Main

*The transmission PCB1 and The transmission PCB2 are the same part.

- Caution When the Main PCB is newly installed to the RB unit, the address setting is required. The RBG Address number has to be set as the same address of connecting indoor unit. (When a connection port of RB unit has a multi indoor unit connection, the younget address number of indoor unit has to be given to the main PCB of RB.)

Main PCB

Transmission PCB1

03-13

3-7-4 Solenoid Valve controlling

Open / Close operation in Operation

SV No.

SV1 ( SVD1 ) SV4 - 6 ( SVS ) SV2 ( SVB2 ) SV3 ( SVB1 )

Function

Discharge Valve Suction Valve Equalization Valve (Pressurization) Equalization Valve (Decompression)

( Indication on Service Tool )

Open / Close operation in Special operation

SV No.

SV1 ( SVD1 ) SV4 - 6 ( SVS ) SV2 ( SVB2 ) SV3 ( SVB1 )

Function

Discharge Valve Suction Valve Equalization Valve (Pressurization) Equalization Valve (Decompression)

3-7-5 Refrigerant Flow

- Cooling operation -

Cooling / Dry mode Heating mode

Close Open Close Open

Defrost Oil Recovery

Close Open Close Open

- Heating operation -

Vacuuming Mode

Open Open Open Open

Open

Close

Open

Close

IU. Freeze Prevention

Fan mode / Stop

Close Close Close Open

Compressor Stop by protection

Close Close Close Open

Liquid Line

High Pressure gas line

Low Pressure gas Line

ST

CP3

CV

CP1

Open

EEV Open EEV Open

SV1

Close

SV2

CP2

SV3

Open

SV5

Open

SV6

SV4

- Preparation for mode changing -

EX) Cooling operation Heating operation

Open

SV2

EEV Close

SV1

Close

CP2

Close

SV4

Close

SV5

Close

SV6

Indoor unit Gas Pipe

ST

Liquid Line

High Pressure gas line

Low Pressure gas Line

CP3

ST

CV

CP1

SV3

Close

ST

Liquid Line

High Pressure gas line

Low Pressure gas Line

ST

CP3

CV

CP1

Close

SV3

Open

SV2

SV1

Open

CP2

Close

SV4

SV5

SV6

Indoor unit Gas Pipe

ST

Note:

The preparation for mode changing takes a little time ( about 6 minutes). By changing DIP-SW (SET4-3) to ON, the time for the mode selection controlling will be shorter ( 3 minutes). If the mode selection control time is short, the soud of refrigerant may be loud during cool to heat selection control process.

03-14

4. TROUBLE SHOOTING

4. TROUBLESHOOTING

4-1 NORMAL OPERATION

4-1-1 Indoor Unit Display

Flashing PatternIndication LampIndication type

Operation

Continuous lighting

Operation LED

Continuous lighting(lowered light)Anti Freeze

Continuous lighting(lowered light)Timer LEDTimer

Filter Filter LED Continuous lighting

1 sec 1 sec

Operation LED

ON

OFF

Power Failure

1 sec

6 sec 2 sec

Defrosting

Oil Recovery

Timer LED

Operation LEDTest Operation

Timer LED

Operation LED

ON

OFF

ON

OFF

ON

OFF

1 sec

Opposite Operation Mode

Maintenance Mode

Location Notification

Timer LED

Operation LED

Timer LED

Filter LED

Operation LED

Timer LED

Filter LED

3 sec 1 sec

ON

OFF

ON

OFF

ON

OFF

This function is only available on the 2 wires remote controller. Please refer to the installation manual of UTY-RNR*

1 sec 1 sec

4 sec

1 sec

04-01

4-1-2 OUTDOOR UNIT DISPLAY

Indication type 7 Segment LED Pattern

Idling(stop)

Cooling Mode (Mainly Cooling)

Heating Mode (Mainly Heating)

Oil Recovery Operation

Defrost Operation

Discharge Temp. Protection is stopped

High Pressure Protection is stopped

Low Pressure Protection is stopped

Compressor Temperature Protection is stopped

Blank

"C" OO "L"

"H" EA "T"

"O" IL "R" ECOVERY

"D" E "F" ROST

"P" ROTECT "1"

"P" ROTECT "2"

"P" ROTECT "3"

"P" ROTECT "4"

Description

Refer to Chapter 02. (Outdoor unit operation control)

<Starting condition> Discharge temp fixed value 239°F(115°C) <Release condition> 3 minutes have elapsed and discharge temperature 176°F(80°C)

<Starting condition> High pressure 611psi(4.00MPa) or Pressure SW in operation <Release condition> 5 minutes have elapsed and high pressure 509psi (3.50MPa) and Pressure SW release <Starting condition> Low pressure 7psi (0.05MPa) or low pressure 15psi (0.10MPa) continues for 10 mins <Release condition> 3 minutes have elapsed and low pressure 25psi (0.17MPa)

<Starting condition> Compressor temp fixed value 239°F(115°C) <Release condition> 3 minutes have elapsed and discharge temperature 176°F(80°C)

Peak Cut Mode

Low Noise Mode

Snow Falling Protection Fan mode

Inverter Compressor Operation Indication

POWER

ERROR

MODE

LED101

LED102

(RED)

(GREEN)

LED105

LED104

POWER LED101

ERROR LED102

"P" eak "C" ut

"L" OW "N" OISE

"SN" OW

Blinking

ON

OFF

ON

OFF

Refer to Chapter 02. (Outdoor unit operation control)

ON

1 sec 1 sec

OFF

04-02

4-2 ABNORMAL OPERATION

4-2-1 Error code Display

An Error code is represented by 3 digit characters. The first 2 digit means the subsection Error code, and the last 1 digit means the specifics Error code.

Ex.) Indoor unit Network communication Error

1 4 . 3

Subsection Error Code

14 : Network communication Error

Specifics Error Code

3 : Indoor unit Network Communication Error

Each Error code section is shown by the following target

Subsection Error Code target

- Indoor unit (Operation / Timer / Filter) LED

- 2 / 3 Wires Remote controller

Subsection and Specifics Error code target

- Outdoor unit 7 segment Display

- Service Tool

- Simple Remote controller

- Group Remote controller

- Central Remote controller

- Touch - Panel Controller

When an Error occurs, each devices indicate own abnormal detecting condtion. In order to confirm the actual error condition, the following procedure are required.

1) Confirm the Specific Error code on the Outdoor unit 7 segment display or the Service tool. Ex.1.) When the wired remote controller shows " 9 U (Outdoor unit Error)". Ex.2*.) When the wired remote controller shows " 4 2 (Indoor unit Heat-Ex Sensor Error)"

*The Specific Error code can be indicated by service tool.

2) Confirm each Error code on each devices in case of Network communication Error. Ex.) When the Network cable of indoor unit 00 disconnected during operating.

Error code “ 14.2 ”

Outdoor unit

Error code “14.1 or 14.3”

Error indication pattern

"14.1": No communication between Outdoorunit and Service tool. "14.3": Communication Error on the Indoor unit.

Operation LED: 1 time blinking Timer LED: 4 times blinking

"Network communication Error" *Indoor unit detects the condition of Error code 14.3, but it can only display the Subsection Error code.

" No communication between indoor unit 00 "

Service Tool

Error code “ 14 ”

RB unit

Indoor unit 00

RB unit

Indoor unit 01

Wired remote controller

04-03

- DipSW 4-2:ON Default Setting -

Touch-panel Controller

Error code "14" “16”

Error indication pattern "14": Error on the Outdoorunit (14.2) "16": The Communication Error between Touch panel controller and Error indoor unit.

Note: About Service tool

- To change the connecting location of service tool can be helpful for the trouble shooting.

- To check the system configuration, the Address checker function can be helpful for trouble shooting.

4-2-2 Indoor Unit Display

Error Indication Flashing Pattern

Example : Indoor Unit Main PCB Error (Operation LED : 3 times, Timer LED : 2 times)

1 cycle

ON

1.0s

Operation LED

Timer LED

Filter LED

OFF

ON

OFF

ON

OFF

0.5s 0.5s

0.1s / 0.1s

0.5s 0.5s 0.5s 0.5s

4.0s

1.0s

4-2-3 Outdoor Unit Display

3.0s

0.5s 0.5s

1.0s

4.0s

LED display

POWER

ERROR

MODE

LED101

(GREEN)

POWER MODE LED : on ERROR LED : blink

LED102

(RED)

Operation button

MODE

ERROR transition

Short press : less than 3 seconds Long press : more than 3 seconds

Type of errors

SELECT ENTER

EXIT

SW108 SW109

SW107

Annunciation

"Err." and quantity are alternately shown.

"ENTER" short press"ENTER" short press

ex : discharge thermistor 1 abnormal ex : indoor unit abnormal

"SELECT" short press display change

POWER LED101

ERROR LED102

ON

OFF

0.1sec 0.1sec

ON

OFF

If some error is newly occured or resolved during transition, it is reflected after going back to "Annunciation".

When there is more than one error, display is changed by "SELECT" short press.

"ENTER" long press *

Address

"ENTER" short press

* Only in the case of "indoor unit abnormal (E.5U.1)", indoor unit address is shown by ENTER long press.

"SELECT" short press display change

When more than one indoor unit is abnormal, display is changed by "SELECT" short press.

04-04

4-2-4 Remote Controller Display

<< SIMPLE REMOTE CONTROLLER >>

ERROR CODE DISPLAY

If an error occurs, the following display will be shown.

“ “ will appear in the set room temperature display.)

(

“ is displayed, immediately contact authorized

“

If service personnel.

<< WIRED REMOTE CONTROLLER 3 wire type>>

ERROR CODE DISPLAY

Error code

Faulty unit No. (Remote controller address)

Ex. Error code display

If an error occurs, the following display will be shown.

“ “ will appear in the set room temperature display.)

(

“ is displayed, immediately contact authorized

“

If service personnel.

<< WIRED REMOTE CONTROLLER 2 wire type>>

If an error occurred, an error icon appears on the Monitor mode screen.

Conference

Mode

Set Temp.

-Status

Fri 10:00AM

Fan

Menu

1. Touch the [Status] on the Monitor mode screen.

-Status

Air Flow Direction

VT1

1

Economy

Off

Monitor

2. Touch the [Error Information] on the Status screen.

Unit number (usually 0) Error code

Ex. Error code display

Hz

3

Anti Freeze

Off

Error Information

Address

02-01

Error Code 12, 14

Back

2-digit numbers are corresponding to the error code

Page 1/5



 

ERROR CODE DISPLAY

The air conditioning system must be inspected if “ : “ (error code) appears on the timer and Clock Display, or the

operation lamp is flashing.

*1 ;

Model code

: Outdoor unit : Indoor unit : Group remote controller : Convertor

04-05

Model code

*1

Error code

Ex. Error code display

4-2-5 Trouble shooting index - Error code List 1/2 -

Display Target A

Simple Wired remote controller 2 / 3 wires Wired remote controller Indoor unit LED brinking times,

Display Target B

Group Remote controller Central Remote controller Touch- Panel controller

" 1st figure: Operation LED, 2nd figure: Timer LED"

: No Display A: LED 10 times Blinks J: LED 13 times Blinks U: LED 15 times Blinks

*

Display Target A

1 2

9 U 1 3

1 4

*

1 4 9 U

*

9 U

*

1 6

*

2 6

*

2 9

3 1

3 2

3 9

3 A

4 1

4 2

4 A

5 1

5 2 5 3

5 9

9 U

*

9 U

1 4

9 U

Display Target B

Remote controller Communicaction Error

Communication Error between Outdoor unit

1 4

Network Communication Error

1 6

1 4 1 6

Peripheral device communication Error

Address settingError

Other setting Error

Connection unit number error in wired remote controller system

*

Indoor unit Power supply Abnormal

Indoor unit Main PCB Error

Indoor unit power supply circuit Error

Indoor unit communication circuit (WRC) Error

Indoor unit Room temp. Sensor Error

Indoor unit Heat-Ex. Sensor Error

Indoor unit air temp.thermistor Error

Indoor unit FAN Motor 1 Error Indoor unit Coil (EEV) Error Indoor unit water drain Abnormal

Indoor unit fan motor 2 Error

Indoor unit Error

6 1

Outdoor unit Power supply Abnormal

6 2

Outdoor unit PCB Error

Outdoor unit Inverter PCB Error

6 3

OU. short interruption detection protected operation

*

6 8

Outodoor unit Magnetic relay Error

6 9

Outdoor unit Transmission PCB Error

1 4

Outdoor unit Discharge temp. Sensor Error

7 1

Outdoor unit Compressor temp. Sensor Error

7 2

7 3

Outdoor unit Heat-Ex. temp. Sensor Error

Error Contents

< Subsection >

Display Target C

5 U.1

1 3 . 1

1 4. 1 1 4. 1 1 4. 3

1 4. 2 1 4. 2 1 4. 1 1 4. 3

1 4. 1 1 4. 3 1 4. 2 1 4. 1 1 4. 2

1 4. 5 1 4. 5 1 4. 3

1 4. 1

1 4. 2

5 U.1

2 8 . 1

2 8 . 4

5 U. 1

*

5 U. 1

6 1 . 5

6 2 . 3

6 2 . 6

6 2 . 8

6 3 . 1

6 7 . 2

6 8 . 2

6 9.1

1 4. 3

7 1 . 1

7 2 . 1

7 3 . 4

7 3 . 5

7 3 . 6

7 3 . 7

Display Target C Display Target D

7 seg. Display on Outdoor unit Controller PCB

Display Target D

1 2 . 1

1 2 . 2

1 2 . 3

1 4. 3

2 6 . 4

2 6 . 5

2 9 . 1

3 1 . 3

3 2 . 1

3 2 . 3

3 9 . 1

3 9 . 2

3 9 . 3 Indoor unit power supply Error of AC24V system

3 A . 1

4 1 . 1

4 2 . 1

4 2 . 3

4 A . 1 4 A . 2 5 1 . 2 5 2 . 1 5 3 . 1

5 9 . 2

Wired Remote Controller communication Error

Wired Remote Controller singnal error ( 3 wires RC)

Number Excess of device in Wired RC. System (2 Wires RC)

Communication Error Between Outdoor unit

Outdoor unit Network communication 1 Error

Outdoor unit Network communication 2 Error

Indoor unit Network communication Error

The number of indoor unit shortage Error

Transmission PCB connection Error

Communication Error between Controller and Indoor unit

Address duplication in Wired remote controller system

Address setting Error in Wired remote controller system

Auto address setting Error

*

Signal amplifier auto address Error

*

Connection unit number Error

Connection unit number Error (Remote controller)

*

Indoor unit power frequency Abnormal

Indoor unit PCB Model informaiton Error

Indoot unit EEPROM access Error

Indoor unit power supply Error for fan motor 1

Indoor unit power supply Error for fan motor 2

Indoor unit communication circuit (WRC) microcomputers communication Error

Indoor unit Inlet air temp. Sensor Error

ndoor unit Heat-Ex. Inlet temp. Sensor Error

I Indoor unit Heat-Ex. Outlet temp. Sensor Error

Indoor unit suciton air temp.thermistor Error Indoor unit discharge air temp.thermistor Error

Indoor unit FAN Motor 1 rotation speed Error Indoor unit Coil 1 (EEV) Error

Indoor unit Drain pump Error

Indoor unit fan motor 2 rotation speed Error

Indoor unit Error

**

Outdoor unit reverse phase, missing phase wire Error

Outdoor unit EEPROM access Error

Inverters communication Error

EEPROM data corrupted Error

Inverter Error

Inverter PCB short interruption Error

Rush Current limitting resistor temp. rise protection

Outdoor unit transmission PCB Parallel communication Error

1 4. 1

Discharge temp.Sensor 1 Error

Compressor temp. Sensor 1 Error

Heat-Ex 1 gas temp. Sensor Error

Heat-Ex 1 liquid temp. Sensor Error

Heat-Ex 2 gas temp. Sensor Error

Heat-Ex 2 liquid temp. Sensor Error

Error Contents < Supecifics >

(Indoor unit in WRC control system)

Service Tool

Trouble shooting No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

81

85 20

21

22

23

82 83

24 25 26 84

Refer to I.U Error

27

28

29

30

31

32

33

34

35

36

37

38

39

40

04-06

4-2-5 Trouble shooting index - Error code List 2/2 -

Display Target A

Simple Wired remote controller 2 / 3 wires Wired remote controller Indoor unit LED brinking times,

Display Target B

Group Remote controller Central Remote controller Touch- Panel controller

Display Target C Display Target D

7 seg. Display on Outdoor unit Controller PCB

" 1st figure: Operation LED, 2nd figure: Timer LED"

: No Display A: LED 10 times Blinks J: LED 13 times Blinks U: LED 15 times Blinks

*

Display Target A

Display Target B

7 4

Outdoor temp. Sensor Error

7 5

Suction gas temp. Sensor Error

Heat sink temp. Sensor Errorl

7 7

8 2

Sub cool HEX temp. Sensor Error

8 3

Liquid pipe temp. Sensor Error

Current Sensor Error

8 4

86

9U

J1

14

J1 16

*

*1: Master Outdoor unit : 9 U. 2 / Slave Outdoor unit and Service Tool indicate applicable Error code

Pressure Sensor Error

Compressor start up Error

93

94

Trip Detection

95

Compressor motor control Error

97

Outdoor unit FAN Motor 1 Error

9A

Outdoor unit coil (EEV) Error

Outdoor unit Abnormal

*1

Discharge temp. Abnormal

A1

Compressor temp. Abnormal

A3

Pressure abnormal 1

A4

Pressure abnormal 2

A5

Heat-Ex temp. Abnormal

A6

Ambient temp Abnormal

AC

RB Unit Error

Initial Setting Error

Error Contents

< Subsection >

Display Target C

5U.1 J1. 1

14. 1 14. 1

14. 2 14. 2

Display Target D

7 4 . 1

7 5 . 1

7 7 . 1

8 2 . 2

8 3 . 1

8 3 . 2

8 4 . 1

86.1

86.3

86.4

93.1

94.1

95.5

97.1

97.5

97.9

9A.1

9A.2

9A.3

*1

A1.1

A3.1

A4.1

A4.2

A5.1

A6.3

A6.4

AC.4

14. 3 J1. 4

----

*

Outdoor temp. Sensor Error

Suction gas temp. Sensor Error

Heat sink temp. Sensor Error

Sub cool HEX gas outlet temp. Sensor Error

Liquid pipe temp. Sensor 1 Error

Liquid pipe temp. Sensor 2 Error

Current sensor 1 Error

Discharge pressure sensor Error

Suction pressure sensor Error

High pressure SW 1 Error

Inverter compressor Start up Error

Trip detection

Compressor motor loss of synchronization

Outdoor unit FAN Motor Lock Error

Outdoor unit FAN Motor temp. Abnormal

Outdoor unit FAN Motor Driver Abnormal

Coil 1 (EEV) Error

Coil 2 (EEV) Error

Coil 3 (EEV) Error

Slave out door unit Eror

Dischar

ge temp. 1 Abnormal

Compressor 1 Temperature Abnormal

High pressure Abnormal

High pressure protection 1

Low pressure Abnormal

Outdoor unit Heat-Ex 1 Gas temp. Abnormal

Outdoor unit Heat-Ex 2 Gas temp. Abnormal

Outdoor unit Heat Sink temp. Abnormal

RB Unit EEPROM Access Abnormal

RB Unit transmission PCB2 parallel communication Error

Initial Setting Error

Error Contents < Supecifics >

Wired remote controller "Internal Error" * These error codes will be shown only on the remote controller.

CC.1

C2.1

15.4

Sensor Error

Transmission PCB Error

*

Data acquisition Error

Replace the remote controller, If the error appears on the remote controller.

*

Service Tool

Trouble shooting No.

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

4-2-6 Trouble shooting index - No Error code -

Error condition

Indoor Unit - No Power (Except W all Mounted )

Indoor Unit -No Power( Wall Mounted)

Outdoor unit - No Power

RB Unit - No Power

No operation ( Power is ON )

No Cooling / No Heating

Abnormal Noise

Water leaking

Indoor Unit - No Power (Outdoor air unit)

No E rror Code

System Abnormal

Indoor Unit - No Power (Except Wall M ounted )

Indoor unit - No Power ( Wall Mounted)

Outdoor unit - No Power

RB Unit - No Power

No operation (Power is ON )

No Cooling

Abnoemal Noise

Water leaking

Indoor Unit - No Power(Outdoor air unit)

04-07

Error Contents

Trouble

shooting

72

73

74

75

76

77

78

79

80

4-2-7 TROUBLE LEVEL OF SYSTEM

<< System Condition when Outdoor Unit Error is occurred >>

Trouble Level

12

System Condition

System is not stopped compulsorily

Operation continues

System is compulsorily stopped (*4)

System is compulsorily stopped

(*1) This will not be displayed on indoor unit which Error Report Target (function setting 47 of indoor unit) is set "for administrator". (*2) The System condition can change to (Trouble Level 1) by changing DIP SW (SET 4-1:OFF) (*3) Even if power is reset, this Error cannot release. In Error release, you need to solving the problem and operate the push switch and a and apply "Error reset" (F3-40) after power restart.

When one of outdoor unit on the multi connection detects these Error, the backup operation can activate by using of remaining outdoorunit(s)

(*4) Please check each trouble shooting, and read the caution before using the backup operation.

Outdoor unit Condition

Abnormal LED indication

Outdoor unit does not stop

Abnormal LED indication Outdoor unit stop

Not indicated on Indoor Unit and Peripheral unit. Indicated on Service Tool.

- 14.1 Outdoor unit network communication 1 error

- 67.2 Inverter PCB short interruptation detection

Indicated on Indoor Unit (*1) and Peripheral unit. Indicated on Service Tool.

- 62.3 Outdoorunit EEPROM acccess error

- 62.8 EEPROM data corrupted error

- 73.5 Heat Ex.1 liquid temp. sensor error

- 73.7 Heat Ex.2 liquid temp. sensor error

- 75.1 Suction gas temp sensor error

- 82.2 Sub-cool Heat Ex. gas outlet temp. sensor error

- 83.1 Liquid pipe temp. sensor 1 error

- 83.2 Liquid pipe temp. sensor 2 error

- 62.6 Inverter communication error

- 63.1 Inverter error

- 68.2 Rush current limiting resister temp. rise protection (*3)

- 71.1 Discharge Temp sensor 1 error

- 72.1 Compressor Temp sensor 1 error

- 73.4 Heat Ex. 1 gas temp sensor error

- 73.6 Heat Ex. 2 gas temp sensor error

- 74.1 Outdoor Temp sensor error

- 77.1 Heat sink Temp sensor error

- 84.1 Current sensor 1 error (*3)

- 86.1 Discharge pressure sensor error

- 86.3 Suction pressure sensor error

- 86.4 High pressure switch 1 error

- 93.1 Inverter compressor start up error (*3)

- 94.1 Trip detection (*3)

- 95.5 Comp. motor loss of synchronization (*3)

- 97.1 Outdoor unit fan motor lock error (*3)

- 97.5 Fan motor temperature abnormal (*3)

- 97.9 Fan motor driver abnormal (*3)

- A1.1 Discharge temperature 1 abnormal (*3)

- A3.1 Compressor1 temperature abnormal (*3)

- A4.1 High pressure abnormal

- A4.2 High pressure protection1

- A6.3 Outdoor Heat Ex. 1 gas temp. abnormal (*3)

- A6.4 Outdoor Heat Ex. 2 gas temp. abnormal (*3)

- AC.4 Heat sink temperature abnormal

- 13.1 Communication error between outdoor unit

- 14.2 Outdoor unit network communication 2 error

- 14.5 The number of indoor unit shortage (*2)

- 61.5 Outdoor unit reverse phase, missing phase wire error

- 69.1 Outdoor unit transmission PCB parallel communication error

- 9A.1 Coil1 (Expansion valve1) error

- 9A.2 Coil2 (Expansion valve2) error

- 9A.3 Coil3 (Expansion valve3) error

- A5.1 Low pressure abnormal (*3)

<< Error code which manual error release will be required >>

A5.1 Low pressure abnormal

84.1 Current sensor 1 error

93.1 Inverter compressor start up error

94.1 Trip detection A1.1 Discharge temperature 1 abnormal A3.1 Compressor 1 temperature abnormal

97.1 Outdoor unit fan motor lock error

97.5 Fan motor temperature abnormal

97.9 Fan motor driver abnormal

68.2 Rush current limiting resister temp rise protection

95.5 Compressor motor loss of synchronization A6.3 Outdoor heat exchanger 1 gas temperature abnormal A6.4 Outdoor heat exchanger 2 gas temperature abnormal

04-08

4-2-8 ERROR HISTORY MODE

When the abnormality occurred, the Outdoor unit memorizes the history of error codes up to 10 and it can be displayed on 7 segments LED. It is an effective means to examine abnormality that occurred in the past.

*The error history can be cleared by setting to F3-30.

Refer to the following for the procedure.

1

Mode Selection Display

Select the

Error History Number

4

Monitor Mode

1

Change to the Error History Mode from the Mode Selection Display

POWER

ERROR

LED105

MODE

LED101 (GREEN)

LED102

(RED)

LED104

"ENTER" button short press

Mode selection display The newest History Number and

2

Select the Error History Number

LED105

POWER

MODE

LED101 (GREEN)

ERROR

LED102

(RED)

LED104

It changes if the "SELECT" buttonis short pressed

[Forward]

POWER

ERROR

MODE

LED101

LED102

(RED)

(GREEN)

LED105

Error Code are displayed by the 2 digits

Error History Number : [00]Error Code : [71]

POWER

ERROR

MODE

LED101

LED102

(RED)

(GREEN)

LED105

LED104

2

"SELECT" button short press

[Forward]

ERROR HISTORY MODE

3

Display details

of the

Error History

: Light off

: Flashing

: Lighting

(Newest)

00 01 02 09

The History Number changes sequentially from "00" to "09" by the "SELECT" button

(Oldest)

3

Check the detail of the Error History

POWER

ERROR

MODE

LED101

LED102

(RED)

(GREEN)

LED105

Select the History Number

"ENTER" button short press

LED104

It changes if the "SELECT" button is short pressed

LED105

Detail of Error Code is displayed by the 3 digits

example) Error Code : E711

[Forward]

POWER

ERROR

MODE

LED101

LED102

(RED)

(GREEN)

LED105

Error History Number : [01] Error Code : [- -]

There is no Error History yet, in the object History Number

4

End of the Error History mode

POWER

ERROR

MODE

LED101

LED102

(RED)

(GREEN)

LED105

LED104

"MODE/ EXIT" button short press

LED104

"ENTER" button short press

LED105

If there is no Error History, detail of Error Code is displayed as above

LED105

POWER

MODE

LED101 (GREEN)

POWER

MODE

LED101 (GREEN)

POWER

MODE

LED101 (GREEN)

ERROR

LED102

(RED)

ERROR

LED102

(RED)

ERROR

LED102

(RED)

LED104

Select the History Number Return to the Monitor Mode

example) Normal display (Cooling operation)

04-09

4-2-9 TROUBLE SHOOTING WITH ERROR CODE

Trouble shooting 1 E12.1 INDOOR UNIT Error Method:

Wired Remote Controller Communication Error

Detective Actuators:

Indoor unit controller PCB circuit Wired Remote Control (3 wire / 2 Wire type)

Forecast of Cause : 1. Terminal connection abnormal 2. Wired Remote Control failure 3. Controller PCB failure

Indicate or Display: Outdoor Unit : E.5 U.1 Indoor Unit : Operation LED 1 times Flash, Timer LED 2 Times Flash, Filter LED Continuous Flash. < 1 2 > Error Code : 1 2

Detective details:

Upon receiving the signal more than 1 time from Wired Remote or other Indoor unit, but the same signal has not been received more than 1 minute (3 Wire type). 2.5 minute (2 Wire type)

Check Point 1 : Check the connection of terminal

After turning off the power, check & correct the followings.

Indoor Unit - Check the connection of terminal between remote control and Indoor unit, or between Indoor units, and

check if there is a disconnection or short of the cable.

OK

Check Point 2 : Check Remote and Controller PCB

Check terminal voltage of controller PCB Connector CNC01. (Power supply for Remote)

If DC12V, Remote Control failure (C If DC0V, Controller PCB failure (Remote is OK) >>> Replace Controller PCB

wiring, turn on the power again.

-In case of re-installation is done due to removed connector or incorrect

ontroller PCB is OK) >>> Replace Remote controller

DC

04-10

Trouble shooting 2 E12.2 INDOOR UNIT Error Method:

Wired Remote Controller signal Error

Indicate or Display: Outdoor Unit : E.5 U.1,

Indoor Unit : Operation LED 1 times Flash, Timer LED 2 Times Flash, Filter LED Continuous Flash.

Remote Controller : 1 2

Detective Actuators:

Indoor unit Controller PCB circuit Wired Remote Control (3 wire type)

Forecast of Cause : 1. Terminal connection abnormal 2. Mis-setting 3. Wired Remote Control failure 4. Controller PCB failure

Detective details:

More than 1 time of Token (Communication between wired remote controllers) is received, but it was not received more than 1 minute.

Check Point 1 : Check the connection of terminal

After turning off the power, check & correct the followings.

Indoor Unit - Check the connection of terminal between remote control and Indoor unit, or between Indoor units, and

check if there is a disconnection or short of the cable.

OK

Check Point 2 : Check Remote and Controller PCB

Check terminal voltage of Controller PCB Connector CNC01. (Power supply for Remote)

If DC12V, Remote Control failure (Controller PCB is OK) >>> Replace Remote lIf DC0V, Controller PCB failure (Remote is OK) >>> Replace Conroller PCB

In case of re-installation is done due to removed connector or incorrect

wiring, turn on the power again.

DC

04-11

Trouble shooting 3 E12.3 INDOOR UNIT Error Method:

Number excess of device in Wired remote contorller system (2 Wires RC)

Indicate or Display: Outdoor Unit : E.5 U.1 Indoor Unit : Operation LED 1 times Flash, Timer LED 2 Times Flash, Filter LED Continuous Flash.

Error Code : 1 2

Detective Actuators:

Wired remote controller ( 2-Wire ) Indoor unit Controller PCB circuit

Forecast of Cause : 1. Wrong wiring of RCgroup 2. Indoor unit controller PCB failure

Detective details:

When the number of connecting Indoor unit and Remote controller in one RCgroup exceeds more than 32 units.

Check Point 1 : Wire installation Wrong RCgroup setting

Wrong wire connection in RCgroup (Please refer to the installation manual)

The number of connecting indoor unit and Remote controller in one RCgroup were less than 32 units.

Check Point 2 : Check Indoor unit controller PCB

Check if controller PCB damage

Change controller PCB and check the Error after setting remote controller address

04-12

Trouble shooting 4 E1 3. 1 OUTDOOR UNIT Error Method:

Communication Error Between Outdoor unit

Indicate or Display:

Outdoor Unit : E. 1 3. 1

Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Filter LED Continuous Flash.

Error Code : 9 U / 1 3

Detective Actuators:

Outdoor unit Main PCB

Forecast of Cause :

1. Noise, momentary open, voltage drop 2. Power supply defective

3. The number setting mistake of outdoor unit

4. Connection of communication lines between outdoor units defective 5. Main PCB defective

Detective details:

Master unit: State in which "number of connected slave units" by Dip-SW and the number of slave units which can be recognized by communication did not match continued for 10 seconds or more after the start of control. Slave unit: State in which communication from the master unit was not received continued for 10 seconds or more after the start of control.

Check Point 1 : Noise, momentary open, voltage drop

Check if temporary voltage drop was not generated. Check if momentary open was not generated. Check if ground is connection correctly or there are no related cables near the power line.

OK

Check Point 2 : Check the power supply

Main power ON/OFF state check

Power cable connection, open check

OK

Check Point 3 : Check the number setting of outdoor units

Check the number setting of outdoor units.

Number of outdoor unit

1 unit

2 units

3 units

DIP-SW SET 5-1

OFF

ON

DIP-SW SET 5-2

OFF

ON

OFF

OK

Check Point 4 : Check the connection of communication lines between outdoor units

Turn off the power and check.

Connection and open check of communication lines between outdoor units.

OK

Check Point 5 : Replace Main PCB

Change Main PCB and set up the original address.

04-13

Trouble shooting 5 E14.1 OUTDOOR UNIT Error Method:

Outdoor Unit Network Communication 1 Error

* Indoor unit indicates No display or 1 4 Peripheral device indicates 1 4 or 16.

Indicate or Display:

Outdoor Unit : E. 1 4. 1 Indoor Unit : No display / Operation LED 1 times Flash, Timer LED 4 Times Flash, Filter LED Continuous Flash.

Error Code : 1 4 / 1 6 / 1 4. 1 / 1 4. 3 *

Detective Actuators:

Outdoor unit Main PCB

Forecast of Cause :

1. Noise, momentary open, voltage drop 2. Indoor unit or RB unit power off

3. Communication line connection defective 4. Terminal resistor setting mistake

5. Communication PCB mounting defective, Communication PCB defective 6. Controller PCB defective

Detective details:

DIP-SW SET4-1 is OFF. No communication for 180 seconds or more from an indoor unit which received communication once and no Outdoor unit network communication 2 error.

Check Point 1 : Noise, momentary open, voltage drop

Check if temporary voltage drop was not generated. Check if momentary open was not generated. Check if ground is connection correctly or there are no related cables near the power line.

OK

Check Point 2 : Check the indoor unit or RB unit power supply

Main power ON check

Power cable connection and open check

OK

Check Point 3 : Check the communication line connection

Communication line connection, open check

Refer to SERVICE INFORMATION Network communication Abnormal

OK

Check Point 4 : Check the Terminal resistor setting

Terminal resistor setting check

OK

Check Point 5 : Check the communication PCB (outdoor unit/ indoor unit/ RB unit)

Communication PCB connection check

Communication PCB check

OK

Check Point 6 : Replace Main PCB (outdoor unit/ indoor unit/ RB unit)

Change Main PCB and set up the original address.

04-14

Trouble shooting 6 E14. 2 OUTDOOR UNIT Error Method ::

Outdoor Unit Network Communication 2 Error

* Indoor unit indicates 9 U or 1 4 Peripheral device indicates 1 4 or 1 6

Indicate or Display:

Outdoor Unit : E. 1 4. 2 Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash,

Filter LED Continuous Flash. / Operation LED 1 times Flash, Timer LED 4 Times Flash, Filter LED Continuous Flash. *

Error Code : 9 U / 1 4 / 1 6 / 1 4. 1 / 1 4. 2 / 1 4. 3 *

Detective Actuators:

Outdoor unit Main PCB

Forecast of Cause :

1. Noise, momentary open, voltage drop 2. Indoor unit or RB unit power off

3. Communication line connection defective 4. Terminal resistor setting mistake

5. Communication PCB mounting defective, Communication PCB defective 6. Control PCB defective

Detective details:

[DIP-SW SET4-1 : ON] (Factory setting)

No communication for 180 seconds or more from an indoor unit which received communication once.

[DIP-SW SET4-1 : OFF]

No communication for 180 seconds or more from all indoor units that once received communication.

Check Point 1 : Noise, momentary open, voltage drop

Check if temporary voltage drop was not generated. Check if momentary open was not generated. Check if ground is connection correctly or there are no related cables near the power line.

OK

Check Point 2 : Check the indoor unit or RB unit power supply

Main power ON check

Power cable connection and open check

OK

Check Point 3 : Check the communication line connection

Communication line connection, open check

Refer to SERVICE INFORMATION Network communication Abnormal

OK

Check Point 4 : Check the Terminal resistor setting

Terminal resistor setting check

OK

Check Point 5 : Check the communication PCB (outdoor unit/ indoor unit/ RB unit)

Communication PCB connection check

Communication PCB check

OK

Check Point 6 : Replace Main PCB (outdoor unit/ indoor unit/ RB unit)

Change Main PCB and set up the original address.

04-15

Trouble shooting 7 E14. 3 INDOOR UNIT Error Method: Indoor unit Network communication Error

* Outdoor unit indicates 1 4.1 or 1 4.2 (No communication from 14.3 Error Indoor unit) Peripheral device indicates 1 4 or 1 6

Indicate or Display: Outdoor Unit : E.1 4. 1 / 1 4. 2 * Indoor Unit : Operation LED 1 times Flash, Timer LED 4 Times Flash, Filter LED Continuous Flash. Error Code : 1 4 / 1 6 / 9 U / 14.1 / 14.2 / 14.3 *

Detective Actuators:

Indoor unit Controller PCB circuit Indoor unit Communication PCB

Detective details:

When the cut-off of network communication is detected (more than 90 seconds passed since the last receipt of Outdoor unit signal).

Forecast of Cause : 1. Outside cause 2.Connection failure 3. Communication PCB failure 4. Controller PCB failure

Check Point 1 : Check if any outside cause such as voltage drop or noise

Instant voltage drop ----- Check if there is any electric equipment with a large load within the same circuit. Momentary power failure ----- Check contact failure or leak current in power supply circuit

>>Check power supply for RB unit and Outdoor Unit as well.

Check if there is any equipment that causes harmonic wave near the power cable (Neon light bulb or any electronic equipment which

causes harmonic wave). And check the complete insulation of grounding.

>>If the same symptom does not reappear after resetting the power, possibility of noise is high.

Check Point 2 : Check the connection

After turning off the power, check and correct followings.

Is Indoor Communication PCB loose?

Check loose or removed connection of communication line Indoor unit => RB unit => Outdoor unit.

Refer to SERVICE INFORMATION Network communication Abnormal

Check the Error indication of RB unit.

Refer to SERVICE INFORMATION RB Unit Abnormal

When the signal amplifier is connected , Check the error indication of signal amplifier. ( Refer to the installation manual)

OK

Check Point 3 : Check Communication PCB

Replace Communication PCB of the Indoor units that have the error.

If still the error is there, replace the communication PCB of the RB unit which corresponds to the error indicating Indoor unit.

OK

Check Point 4 : Check Controller PCB

Replace controller PCB of the Indoor units that have the error.

If still the error is there, replace the controller PCB of the RB unit which corresponds to the error indicating Indoor unit.

04-16

Fujitsu AUUA9TLAV, AUUA24TLAV, AUUA18TLAV, AUUA7TLAV, AUUB18TLAV Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual