Toshiba MAR-F101HTM8-PE, MAR-F81HTM8-PE SERVICE MANUAL

SERVICE

Forçage des PMV dans le groupe.

Shunter TP1 Mettre le rotatif sw1 sur 0 et TP1 shunté ouverture de la PMV1 pendant 2 mn Mettre le rotatif sw1 sur 1 et TP1 shunté ouverture de la PMV2 pendant 2 mn (page 42 du MARF102

Couper l'alimentation électrique pour que les vannes restent en ouverture.

Forçage des PMV sur les multi-controllers

Basculer le bouton rotatif de couleur (situé à droite) sur la position 0 et shunté TP1 pour forcer l'ouverture de la PMVA. Basculer le bouton rotatif de couleur (situé à droite) sur la position 1 et shunté TP1 pour forcer l'ouverture de la PMVB. Basculer le bouton rotatif de couleur (situé à droite) sur la position 2 et shunté TP1 pour forcer l'ouverture de la PMVC. Basculer le bouton rotatif de couleur (situé à droite) sur la position 3 et shunté TP1 pour forcer l'ouverture de la PMVD.

Couper l'alimentation électrique pour que les vannes restent en ouverture.

DATA

TOSHIBA

SUPER

CCOOUHEAT

Outdoor Units

Multi-Controller

MULTI

AIR

CONDITIONER

FLEX SERIESI

FILE

NO.

300

-

950

RBM-Y

Forcaae des

Shunter TPI Mettre le rotatif swl sur O et TPI shunté ouverture de la PMVI pendant 2 mn Mettre le rotatif swl sur 1 et Couper I'alimentation électrique pour que les vannes restent en ouverture.

Forcaae des

Basculer le bouton rotatif de couleur (situé à droite) sur la position O et shunté TPI pour forcer I'ouverture de la PMVA. Basculer le bouton rotatif de couleur (situé à droite) sur la position 1 et shunté TPI pour forcer I'ouverture de la PMVB. Basculer le bouton rotatif de couleur (situé à droite) sur la position 2 et shunté TPI pour forcer I'ouverture de la PMVC. Basculer le bouton rotatif de couleur (situé à droite) sur la position 3 et shunté TPI pour forcer I'ouverture de la PMVD. Couper

PMV

dans le aroupe.

TPI shunté ouverture de la PMV2 pendant 2 mn (page 42 du MARF102

PMV

sur les multi-controllers

I'alimentation électrique pour que les vannes restent en ouverture.

1031FE

PRINTED

IN

JAPAN,

July,

1993

@

TABLE

1

.

MULTI AIR CONDITIONER SYSTEMS AND THEIR BASIC COMPONENTS

1.1

.

Indoor Remote Controllera

.

1.2 Outdoor Unlis 3 16.3 . Test Run Check

1.3 . Multi-wnlmllera

14

Indoor Units

2

.

CONTRO1 SYSTEM

3

.

REFRIGERANT CYCLE DIAGRAM

4

.

COMBINATION OF INDOOR UNITS AND OUTDOOR UNITS

4.1 . Baslc Criterls for Combinatlons

4-2

Procedure for Checking ihe Comblnation 7 20.2 . How lo Read the Malfunction Check

4-3 . Exemplee of Connectlon Check

5

.

SPECIFICATIONS OF OUTDOOR UNIT

5.1 . Explanatlon of Electrlc Characterlstlcs Calculation

6

.

EXTERNAL VIEW

6.1 Outdoor Unit 11

6.2 . Multlcontroller

.

6.3

Header

7

.

WIRING DIAGRAM

7.1. outdoor unlt (YAR.F~~H~~, MAR-F~O~HTM~) 14

7.2 . Mulll-wntmller (RBY.Y1031FE, Yl041FE)

.

8

ELECTRICAL SPECIFICATIONS

l

.

Speclflcatlons

8.2

.

Speclflcatlons oi Inverter Asssmbly Parts

8.3. Speciflcatlons of Multl-contraller Parts

.

9

Coollng/Heatlng Capaclty Characteristics

.

9.1

Range of Operalion 21

9.2 . Coollng Capaclty Calculation

9.3 . Heatlng Capaclty CaIculatIon

10

.

AIR TIGHTNESS TEST, AIR PURGING WITH VACUUM PUMP AND CHARGING OF ADDlTlONAL REFRIGERANT

10.1 . Air Tlghtness Test

10.2 . Alr Purging with a Vacuum Pump

10.3 . Addltlonal Refrlgerant Charglng and

Amount of Addltlon

11

.

PIPING LENGTH AND CHARGED REFRIGERANT AMOUNT

11.1

.

Maln

Branch (One Mulii-Controller)

11.2 . Sub Branch (Two Multl-Controllers)

12

.

DESCRIPTION OF OPERATION

t

2.1 . Slmultaneous Coollngl Heatlng Operatlon Control Outline

12.2 . Functlons

13

OPERATIONS OF EACH SENSOR

.

13.1. Multi-Controller 33

.

13.2 Outdoor Unlt

14

.

COOLINGIHEATING AUTOMATIC REMOTE CONTROLLER

14-1

.

CoolinglHeatlng Automatic

ChangeOver Operatlon

15

.

IMPORTANT MATTERS T0 BE CHECKED BEFORE TEST RUN AND SERVICING

15-1

.

Reglstered Indoor Unlt Code Numbers

15-2 . Connections o1 Refrigerant Piping and

Control Wires

Multi-Controller 37

15-3 . Conneclions of Control Wires between Units

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

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

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

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

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

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

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

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

........,..,

"-m.,.".-

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

of

Refrlgerant Cycle Parto

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

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

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

and

Operations of Solenoid Valves

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

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

..-...

-

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

beiween Indoor Units and

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

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

...,.......................

..

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

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

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

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

...-.".....

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

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

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

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

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

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

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

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

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

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

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

..

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

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

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

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

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

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

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

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

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

...........

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

....

...

.......

........

OF

2

3

5 19 6

6

8

9

10

11

12 13

14

16

18

18 19 20

21

22 23

A 25

25 26

27

28

29

30

30 31

33

34

35

36

37

CONTENTS

16

.

TEST RUN

.

16.1 Test Run Prooedure 38

16.2

.

Check

.

Guidelines

16.4

17

.

SERVICING PROCEDURES

18

.

CHECK CODE DISPLAY SYSTEM CHART

.

IDENTIFICATION PROCEDURES

20

.

JUDGMENT OF MALFUNCTIONS WITH THE REMOTE CONTROLLER INDICATION

20.1 . Malfunction Check Dlsplay Operatlon

Monltor Display

20.3 . The Check Code and Ihe Judgmenl

20.4

.

Malfunctlon Judgmeni wlth the Self-Dlagnostlc Function of the

20.5 . Malfunction Judgment wlth the Sell-Dlognoatlc Functlon of the Multl-Controller

20.6. PMV Openlng Pressure Sensor Data Code Display

Conversion Table

21

.OTHERS

21.1 . Microprocessor System Dlagram and the Tlme

Requlred lo Judge the Malfunctlon

21.2 . A Check of ihe Conlrol Clrcuit Power Voltage of

the

Multi-Controller Control Board

21.3

.

A

Check of rhe Control Clrcult Power Voltage of

theoutdoot Interface Board

21.4 220 - 240V Systein Dlagram

.

22 . REMOTE CONTROLLER DISCRIMINATION

FUNCTION, OUTDOOR UNIT D

ISCRIMINATION FUNCTION

.

22.1 Search from the Remote Controller

.

22.2 Search from Outdoor Unit 76

23

.

CHECK FOR REFRIGERANT PIPING AND INTER-UNIT WIRING CONNECTION

23.1

.

Check System Procedure8

24

.

REMOVAL METHOD

24.1 Outdoor Unlt (MAR.FSlHTM0, FlOlHTM8)

.

24.2. Multi-Controller (RBM.Y1031FE, Y1 WlFE)

25

.

EXPLODED VIEWS AND PARTS LIST

25.1 . Outdoor Units (MAR-FS1 HTM8, MAR-FlOIHTM8)

25.2 . Electrical Parto Assembly

(MAR-FS1

25.3

.

Multi-Controller (RBM.Y103IFE, RBM-Yl041FE)

25.4 . Eleclrical Parts Assembly (RBM.Y1031FE, RBM-Y1041FE)

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

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

before

Test Run

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

...........................................-.............

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

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

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

...........

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

.,.,.,

......,.....,..

"v-.

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

Outdoor Unlt

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

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

Degree,

Temperature Sensor and

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

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

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

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

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

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

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

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

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

J

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

...........

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

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

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

HTMB,

MAR-F101HTM8)

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

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

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

30

38

39 41

43

....

45

46

49

50 51

57

.....

64

67

71

71 72

......

73

....

74

76

36

77

70

78

83

86

...8

6

.88

90

91

1.

MULTI AIR CONDITIONER

COMPONENTS

These multi sirnultaneously.

air

conditioner systerns allow separale operation of each indoor unit

Multi-controller

SYSTEMS

AND THEIR BASIC

in

both heating and cooling

Cooling operaiion

0

Heating operation

+

Danger:

Fig.

1-1

Be

sure to provide a ventilator in a room, because;

This multi air conditioner system contains a large amount

a

case of a refrigerant leakage frorn with a large volume of refrigerant gas.

Consequently, people or

anirnals in the room

indoor unit, a room equipped with the indoor unil

may

be

suffocated by lack of oxygen.

of

refrigerant

Indoor remote controller

(HCFC

22).

In

the worst

is

filled

1-1.

Indoor remote controllers come either with or without lhe automatic heatinglcooling mode lunction. Automatic

heating

1-2.

Two types of outdoor units are available in the iine-up: both types are used in combination.

1-3.

Multi-controllers are refrigerant distributing devices to connecl multiple indoor units with the outdoor unit. The series includes 3-way (for 3 indoor units)and 4-way multi-controllers. To make indoor units) system, the 3-way and 4-way mu#icontrollers are used in combination wilh a header.

1-4.

There is a wide range ol indoor units totaling Refer to

Indoor

and

Remote

cooling operations can be controlled by those that equipped with Ihe funclion.

Controllers

Outdoor Units

8

HP

and

10

HP.

For

16

Multi-controllers

Indoor

table

4-1.

Units

13

models

(3

types with 6 capacity ratings from

HP or larger applications,

a

5-,

6-,

7-

or 8-way (for

1.5

to 5 HP).

8

2.CONTROL

The refrigerant and electrical systems of the multi air conditioner system are controlled by the multi-controllers and rnicroprocessor contained inside the outdoor unit. The indoor units of the CooltHeat Flex Series of Multi Air Conditioner Systerns are the same units as in the RAV-series air wnditioner systems.

For system operation, first the microprocessor in each indoor unit reads the difference between Ihe current

room temperature and desired temperature which has been set by the remote corresponding operation comrnands

On the basis of the operation commands sent lrom al1 the indoor microprocessors, the multi-controller microprocessors adjust the cooling and heating operation commands and send them to the interface microprocessor in the ouldoor unit. The inleriace microprocessor calculates the capacity required for cooling and heating, determines Ihe operation mode in the outdoor unit and compressor and frequencies of

SYSTEM

controller, determines the

demand signai, and transmits this to the multicontroller rnicroprocessors in the form

(ONJOFF,

al1 the requested heating command dilference between al1 the requested cooling command

the compressor of al1 the indoor units.

coolinglheating operation mode, operation frequency of the compressor).

calculates frequencies of the

of

-

r-

Indoot unit

Fan

Temp. sensor

Outdoor

I

-

A

1

Multi-controller

Capacity rank

setting

SW

Temp. sensor

-

7-

Protection unit

Comp. sensor

Temp. sensor

unit

.

-

1

Electronic flow rate

adjustment valve adjustment valve

Indoor unit microprocessor

.>

I-.

cm-'>

-P-

Multi-controller microprocessor Interiace microprocessor

Display

LED

2-way valve Display

Electronic flow rate

Compressor

LED

2-way valve

Fan

v

4

"'"

:

L.

----

I-

Multi-controller microprocessor

r-

-

Inverter

microprocessor i Inverier

Compressor

V

-1

D

t-----

----

Fig.

2-1

Ptotection

L+

unit

3.

REFRIGERANT

CYCLE

DIAGRAM

Fig.

3-1

Exarnples

of

8

and

10

HP

4.

COMBINATION OF INDOOR UNITS AND

OUTDOOR

UNITS

4-1.

(1) For details of indoor units to be connected, referto the each Service Data for indivisual RAV-series split

Wall

Cassette

Duct

(2)

Basic

systern air conditioner.

The indoor units have code numbers according to their capacity ranks.

Criteria for Combinations

Table

4-1

Available indoor unit mode1 name and service data file nurnber

130

RAV-130UH-P

No. 300-949

Capacity Rank of tndoor Unit

160

RAV-16OKH-P

NO. 300-885

RAV-1 6OUH-P

No.

300-883

RAV-160BH

NO.

300-842

Table

4-2

130

160

200 260

360

460

-RAV-200KH NO. 300-855

RAV-200BH NO. 300-842

Code numbers of indoor units

200

260

RAV-260KH-P

NO. 300-885

RAV-260UH-P

No. 300-883

RAV-260BH-P

NO.

300-920

Code No.

3.

4 4

5

8

10

360

RAV960UH-P

No. 300-881

RAV-36OBH-P

NO. 300-920

(See

Table

4-2.)

460

RAV46OUH-P

No.

300-881

RAV-460BH-P

NO. 300-920

(Ex.

Model RAVS6OUH-P + Capacity rank 360)

(3)

Indoor units within a determined range of codes can be connected to the outdoor units (minimum code

and maxirnum value of code number total). (See Table

4-3

Code of outdoor units

7

with

but the maximum capacity at which operation is possible at any

8

HP

(MAR-F81

l0

HP

(MAR-F1 O1 HTM8) 8

(4)

Only one multi-controller the systern is divided into two are necessary.

Note:

HTMB)

It is possible to connect indoor units unit (by a maxirnurn given time is the maximum capacity of the outdoor unit.

Table

Max.

Connected Unit Min. Code

is

needed when using up lo four indoor units, but for five to eight indoor units,

parts and a multi-controller is connected lo each, so two multi-controllers

of

13S0h),

4-3.)

Max.

3

a total capacity exceeding the capacity of the outdoor

2

27

Code

1

4-2.

Procedure

for

Checking

combination.

the

Combination

Note:

1

to

4

A

multi-controller

For

each

procedure

@

L

units

is

necessary

in

Decision on indmr unit and outdoor unit combination.

@

What

is

the

nurnber

of

indoor

the

even when

above

flow

only

chart,

using

please

one indoor

reter to

Fig.

unit.

4-1.

5

io

8

units

two

multi-wntrollers.

4-3.

Examples

of

Connection

Check

code

@Check

for

the

unii

qliantiy

Fig.

4-1

6-o)

.

Totai Indoor

<130>~9+3~3 0TYType33a3

Cr)

(130I~~pe-3ra

(200)

(200') (200)

Totai Indoor

unitcode

Outdoor

unitcode

Outdoor

~ype

-

:

L,,,,,,J

unit

Max.

Type

-c

Type

-

~~~e + 423 ~ype

-,

,,,,,,

unit

Max.

8z3

code

3 r 3

4

r

3

423

code

7

,

'

@~heck

for

M,,co*

h

,

'I

i

C

lhe

-

5.

SPECIFICATIONS

OF OUTDOOR

Table 5-1

UNIT

Model

Name

Cooling capacity (h 1) (kcallh) Heating capacity (*l

Power supply

Operating current

.-

-

O

Power consumption (kW)

8

Power factor

Operating currenl

.-

C

m

CB

Power oonsumption (kW)

I.

Power facior ("/o)

Starìing current Starting rnethod Dimensions Net

weight

Finished color Compressor

Fan unii

(H

(*2)

x W x

)

D)

TYP~

Motor output Fan Motor output Air flow volume (m3/h)

(kcallh)

(A)

(%l

(A)

(mm)

(kg)

(k

W)

(kW)

MAR-F81

18,000 (20,000)

18,600 (23,200)

12.3 (1

1 1.7 (15.3)

1,490 x 1,290

HTM8

3-phase 380 - 415V 50Hz

4.0)

8.0(9.2)

94

(95)

7.7 (10.1)

95

(95)

330

Silky gray (Munsell

5.6

MAR-FIO1

22,500 (25,000) 23,200 (29,000)

15.7 (17.2)

10.1 (11.5)

15.0 (20.0)

10.1 (13.6)

60

Direct

x

750

Herrnetically sealed

Propeller fan

0.15

1,490 x 1,290 x 750

6Y710.3)

x

2

10,000

93

97

HTMB

(96)

(98)

340

7.5

Refrigerant (charged weight)

Discharge gas side (mm) Liquid side (mm) Suction gas side (mm)

Coupler style

Max.

equivalenl piping length

Max. actual piping

Max. piping head

Crank case heater

Note:

Specificalions are subject to change without notice.

l:

al maxirnum capacity.

*2:

length

CoolingtHeating capacity

Power voltage,

ii

it varies, should be within a 10% range.

is

based on

(kg)

(m)

(W)

R-22

(17.6) R-22 (21.6)

019

015.9

025.4

Flare connection (liquid sideldischarge gas side), Brazing connection

100

:

The equivalent length is the base

many bends.

too 50: In case of outdoor unit installed above,

20: In case of outdoor unit installed below.

JIS B 8615. The value marked by

1

(suction gas side)

120

74

028.6

(

)

means operation

if

there are

5-1.

Explanation

of

Electric Characteristics Calculation

Calculate with the formulas below seeing Table

Totat input Total current

Total power factor

PT

=

CP

IT

=

~(CIP) + (CIv)

(kW)

f

=

Clp/l~

x

100

(A)

(Oh)

5-2.

Table

5-2

Model

Narne

Power consumption

CoOling

Effettive

Ineffective current Power consurnption P

Heating

Effettive

Ineffective current

Note:

Exarnple:

Rated

The value marked

MAR-F01HTM8

value at moling operation:

Total input Total current

Total power factor

Like this, calculate

by

operation

turns.

MAR-F81 HTM8

+

x

5.8

8.0 (9.2)

11.6 (13.3)

4.1

(4.4j

7.7

(10.1)

11.1

(14.5)

3.7

(4.9)

3

units

x

3)2

=

59.4

=

93

(%)

.(A)

P

(kW)

current

IIJ

IV

(A)

(kW)

current lp

Iv

by

(

)

means operation at rnaximum capacity.

x

1

unit

PT~

=

8.0 + 10.1 x 3 = 38.3

ITI

=

d(11.6 + 14.6

f

=

(1 1.6 + 14.6

the

maximurn value at cooling operation, both rated and maximurn value al heating

(A) (A)

+

MAR-FlOlHTM8

(kW)

x

312

+

(4.1

x3)

x

100/59.4

MAR-101

10.1

14.6 (16.5)

5.8

10.1 (13.6)

14.6

3.4

HTMB

(l

1.5)

(4.9)

(19.6)

(4.0)

6.

EXTERNAL

VIEW

6-1.

Side

air intake

Outdoor

Unit

750

Air

outlet

Anchor

boiis

for

anchor bolt

x

20(slotting hole)

Dimensions:

Model

MAR-

(UNIT:

I

A

mm)

Fig.

6-1

'

piping

To indoor uni1

To indooX1

A

To indoor unii

To indoor uni1 B To outdwr uni1

Electric

parts

box

Refri ant piping joint (Ilare) Liqui

A-TO

To indoor uni1 B To indoor unit

=or unx Toxdoor unit

C

Note: Please install

e019

D

Fig. 6-2

hole for

Oval hanging bolt

4

100 or more

A

I

-F

Slit for hanging bolt It is indispensable for test run and servicing.

-1

\

1

I

,I

-

Outdoor uni1 side

M

Or

Electric paris box or more

1

Note: Make an inspection opening at the sp~ified p"..

450rnm x 450rnm over

Suction gas side

Outdoor uni1 sidel

or

Neciri!= 500

g

-

I

Note: Make an inspeciion opening ai the specified place.

Il is indispensable for test run and servicing.

0

28.6

more or more

Indoor unit side

or more

450 x 450 inspection opening installation space

100 or more

I

T

Indoor unit side

500

or more

450 x 450 ins~ection

installation siace

iring entrance

igerant piping joint (Ilare)

Discharge gas side 0 19

I

opening

6-3.

RBM-HD821FE, RBM-HD1021FE

1-

0

36

O O

Liquid side 0 9.5

Fig. 6-3

450mm x 450rnm over

Suction gas side

0

28.6

Discharge gas side 0 19

7.

WIRING DIAGRAM

7-1.

Outdoor

Unit

(MAR-F1

01

HTMBlMARF81HTM8)

Inarlor

Cmtrol

PC bmrd

YCC-1251

Inlaloce Cmlrd

-14- -15-

PC

bmid

Fig.

YCC-1223

7-1

Multi-controller

r----------'------------------------------------------------------------------------

(RBM-Y1031 FE, Y1041 FE)

!

Rernenber:

7

For quick reference on connection between the

!

multi-controller ond indoor units. enter indoor unit models connected. instollotion locations, ond code setting in the toble below.

1. Oond

O

enclosed in them ore termino1 numbers.

2.

The two-dot dosh line indicotes wiring on site.

3.

EZZJ

indicates o printed circuit boord

4.

The C13frome indicotes the product body

5.

RBM-Y1031FE does not have PMVD. SVD(D) SVS(D),@- setting switch for room

Ports layout

Control

PC

boord

m

[

Termina1 plote

8

unii

8

I

i

L.B.A

a

Indoor

L.L.A

]

Indaor

,m

unit

i i

Indoor

L.2.J

8 8 8 8

unii

i

L-0-1

Syrnbol PMV A,B.C.D Th A.B.C,D,X Tr CS H MS

lndoar

unii

i i

Ouldcor

L--.l

Product Flow control volve Temperature sensor Power tronsforrner Float switch Heater Reset switch

unit

:

Symbol SVDiA).IBI.IC).(DI SVSiAl.(BI,(C).(DI SVDD SVSS SVH LD101.102.103.104

Electricolly operoted volve of discharge gas side Electrically operoted volve of suction gas side Electricolly operoted valve for pressure raising Electricolly operoted valve for pressure decreasing Electrically operated valve for superheot Foult indicotor lomp

8.

ELECTRICAL

PARTS

SPECIFICATIONS

8-1.

Model

Cornpressor motor

Blower

rnotor

Specifications

of

Refrigerant

Name

Model name Motor type Power supply

Output (kW)

Pole Coil resistance Cornpressor oil narne

Arnount of oil Model narne Motor type

Power supply Output Power supply (A) Pole Inner over-load relay

(p)

(Q)

(W)

(p)

Cycle

Parts

MAR-F81

HV990CW-YI 2

HTM8

3-phase induction motor

3-phase, 380 - 415V, 50Hz

5.6

212 (Inveder sidelNon-inverter side)

1.4912.51

(Inverter sidelbion-inverfer side)

SUNISO 3GSD

7,000~~

STF-200-150C

l

-phase, induction motor

1-phase, 220

1.12/1.44

OFF:115 f 5OC

MAR-FIO1

HV1200CW-Y12

-

240V, 50Hz

150

6

HTM8

7.5

High pressure switch

Low pressure switch

4-way valve Compressor case heater

Pressure sensor

Discharge temperature sensor Suction temperature sensor Outdoor air temperature sensor Flow rate adjustment valve Flow rate 2-way valve 2-way valve

Specifications are subject to change without notice.

Model name

Operating pressure (kg/crn2~)

Model narne

Operating

adjustment valve (for bypass)

pressure (kg/cm2~)

20PS-Bl20PS-G (Inverter side/Non-inverter side)

OFF: 30, ON:

ON: 1.5, OFF: 0.25

Model narne: 2S5F-A1

Input voltage: DC 12V

Output voltage:

25°C:

50W,

0°C: 32.8kR, 25°C: 10k2,5O0C: 3,6m 0°C: 32.8kLt25"C: IOkQ, 50°C:

EV23RC2, Coil DC 12V

EV18RC, Coil DC 12V

(RP100-03), Coil

NEV202DXF, Coil AC 240V

23/OFF:23,

20PS-1

V25-760B

AC240V, 74W

DC

50°C: 17.9kQ, 100°C:

ON:

0.5 - 4.5V

AC

240V

30

3.35kS1

3.6U

8-2.

Specifications

of

Inverter

Assembly

Parts

Model

Power supply

Output voiiage at operating frequency of

IGBT Relay

Blower motor running capacitor

Rectifier

AC noise filter

DC noise filter Power supply rectifier capacitor Fuse Electronic starter Reactor Fan

rnotor relay Control relay Magnetic contactor for Magnetic contactor for compressor

(Non-inverler side) Transformer (lnverter) Transformer (Interface)

Power supply

PC

board (tnverter)

termina1 plate

Narne

compressor (Inverter

60Hz

side)

MAR-FS1

HTM8

3-phase,

EAG45M605UF1,6pF450V

ZSG2208-02,8A, 250V

LNT2G222KSMCTF, 2200pFl4OOV

12A

380

AC

MG50Q6ES11

LY

1 F (AC 240V)

30U6P42,30A

LF215AV, 15A, 71

912X25ElOlYV20

CH-26-T, 6.2mH, 18A

G2R217PV

G4U-112P

FT13-2

ACGOOV, 60A

MCC-1251

-

41 5V, 50Hz

266V

20A

13A

FT57

MAR-Fl 01

6V

HTM8

15A

PC

board assembly (Interface)

Cooling

Specifications are subject to change without notice.

fan

MCC-1223

3650EXV-5,220 - 240V

8-3.

Specìfications of Multi-controller

Parts

Model Flow rate adjustment valve Temperature sensor Float switch

Power supply transformer

Relay (on Heater

Temperature fuse for heater Power current fuse for heater Discharge gas side solenoid valve

Suction gas side 2-way valve 2-way valve

Specifications are subject to change without

PC

board)

solenoid valve

Name

Model narne Specif ication

notice.

RBM-Y1031

0°C:

Prirnary side: AC 240V, Secondary side:

50W

REV-1506DXFQ6, Coil

FE

EV23RC5, Coil DC 12V

32.8m.

NEV202DXF, Coil NEV603DXF, Coil AC 240V

25OC: 1 OkR, 50°C:

FS-085-0031

FT56

G2R-117P,

10.4W/m

0FF:11S0C

RP100-03, Coil

Coil

I

1 A

AC

RBM-Y1041

DC

12V

65W

240V

AC

240V

AC

240V

3.6kn

FE

AC

12V

9.

CoolinglHeating Capacity Characteristics

9-1.

Range

15

Room

Temperature

('C

of

20 25

air wet-bulb

WB)

Operation

15

Room

20

25

air wet-bulb

Temperature Temperature

("C

WB)

@

15

Room

("C

20

air

dry-bulb

DB)

@

25

15

20

Room air dry-bulb

Temperature

('=C

DB)

25

30

Note:

Fig.

9-1

@:lndicates the standard internal air temperature

temperature range for

@:When cooling load

@:~hen

lhe

heating load

the indoor unit during the heating operation

is

higher and heat is being exhausted

is

higher and heat is being absorbed

for

the

cooling

from

operalion.

is

15

The

to

the outdoor una.

by

the outdoor unit.

internal air

28°C

DB.

9-2.

Cooling Capacity Calculation

Corrected

a

Room Air Wet-Bulb Temperature Conditions and Capacity Correction Factor

@

Indoor Unit

(Built-in

Air

Duct

cooling capacity = Standard

1.2

flow

Capaciry

rection

Volume

cor-

factor

1

0.9

0.8

and Capacity Correction Factor

Type Only)

Capacity correction factor

cooling

.l

capacity

.o

15 Room air wet-bulb temperature

Fig.

20

9-2

24

("C)

x

(a

x

@ x @

x

@)

Air

flow

volume variation ratio

Fig.

9-3

@

Ambient Air Dry-Bulb Temperature and Capacity Correction Factor

Capacity correction factor

Ambient air

dry-bulb

Fig.

temperature

9-4

(%)

("C)

@

Piping

Head,

Length and Capacity Correction Factor

&'r

I

ho

Outdoor unit

I

P'o

unit

9-3.

Heating

@

Room Air

10 20 30

Capacity

Corrected

Dry-Bulb

Capacity correction

40

50

60

70

80

Length (equivalent length)

Calculation

heating

factor

capacity = Standard

Temperature and

1.2

1.1

0.8 15 20 25

Room air dry-bulb temperatuer

90

100 110 120

L'

(m)

Fig.

9-5

heating

Capacity

Fig.

9-6

L'

is

the longest one of

H

=

ho

+

(largest one of

capacity

x

(a

x Q x

Correction Factor

("C)

4'0

@

ha,

x

+l'a,

hb and

@)

O'O

+

hc)

Eb,

4'0

+

O'C

@

Ambient Air Wet-BuIb Temperature and Capacity Correction Factor

Capacity

ction factor

corre-

1.3

1.2

0.5

-1

O

-5

Room

O

air wet-bulb temperature

5

10 15

("C)

Fig.

9-7

@

Indoor Unit Air Flow Volume and Capacity Correction Factor

(Only for Built-in Duct type)

@

Piping

Capacity

ction

facotr

corre-

1.1

1

.o

0.9

80

90 100

Air flow volume variation ratio

110

l20

(%)

Fig. 9-8

Head, Length and Capacity Correction Factor

7

hc

Outdoor

unit

Multi-Controller

O'c

Indoor unit

Length (equivalent length)

L'

(m)

Fig.

9-9

C

is

the longest one of

H

=

ho

+

(largest one of

2'0

ha,

+

l'a,

hb

4'0

and

+

hc)

Ib,

I'o

+

O's

10.

AIR TIGHTNESS

TEST,

AIR

PURGING

WITH

A

VACUUM

PUMP

AND

Make sure Lo multi-controller and outdoor unit.

Aiter the flushing conduct the Air Tightness Test, Air Purging and Additional Refrigerant charge in turn.

10-1.

This test uses nitrogen gas under the pressure of

(1)

(2)

(3)

(4)

CHARGING

do

the "Flushing" of the refrigerant pipes between indoor units and multi-controller,

work

is done, connect the pipes (liquid side, suction gas side, discharge gas side)

Air

Tightness

Do

not

operate the packed valve or service valve until completion of air purging. (Leave the valves

closed.) Air tightness test and air purging with a vacuum pump should be done before turning on the power

The

gauge rnanifold's charge hose has a

(06.4)

for the test.

Connect the copper pipe to the charge port

OF

Test

ADDITIONAL

30

kg/crn2~.

low

pressure resistance,

of

the suction gas pipe's service valve.

REFRIGERANT

so

always replace it

with

and

a

copper pipe

Note:

Liquid

pipe

Discharge

After connecting the copper pipe for charging, pressurize

then check that there

may be

a

gas leak. The piace(s) from where the gas is leaking should be checked.

Suction

gas

pipe

gas

pipe

Fig.

10-1

is

no change in the gas pressure.

to

30

kg/cm2~,

If

the gas pressure decreases, there

let stand for one day,

10-2.

(1)

(2)

(3)

(4)

Air

Purging

After completing the air lightness test, exhaust the nitrogen gas from the piping. Connect the charge hoses behveen the gauge manifold and

packed valve charge

Replace the nitrogen tank with lhe vacuum pump.

Carry on air purging with the vacuum pump for at least 2 or 3 hours.

t

he gauge manifold's valve

with

ports.

a

Vacuum

(Vd)

.

Pump

the

liquid pipe and discharge gas pipe's

When

air purging is completed, close

Note:

Liquid

pipe t Suction

Discharge

1.

To prevent leakage, we recommend you to use a pump with a large capacity purging

2.

Check that the gauge pressure

gas

quickly.

pipe

gas

pipe

is

-76

Fig.

10-2

cmHg.

and

complete

10-3.

(l)

(2)

(3)

(4)

Additional

Reptace the vacuum pump with the refrigerant tank, charge the stipulated arnount of refrigerant, and then open both packed valve and service valve fully. If additional charge is needed, conduct the following.

Switch the charge hose lo the suction gas pipe's service valve charge port (dotted lines 4 solid tines, one

charge

Attach the charge hose lightly to the suction gas pipes service valve charge loosen the refrigerant tank's valves (Va and charge

Next, tighten specified amount of refrigerant. refrigerant

hose as shown in Fig.

hose

is

the

in

gas form from the low pressure side lo supply the specified amounl.

Refrigerant

10-3).

expelled by the refrigerant.

hose fully, then loosen the service valve and use the pressure in the tank to add the

Il not enough refrigerant can be added, operate the unit and

Charging

Vb).

The air in the lank's

Low

Charge hose

pressure

port

at first and slightly

gas

hose, gauge rnanifold and

Gauge

manifold

draw

in the

Lquid pipe

Discharge

t

gas

Suction

pipe

gas

pipe

--2.

Fig.

-2.

10-3

.

\

9)

Gas

Refrigerant

5kg

tank

Spring

scale

gas

(20kg)

11.

PIPING

LENGTH

AND

ADDITIONAL

REFRIGERANT

AMOUNT

11-1.

At factory shipping, the "standard arnount of refrigerant" corresponding to the "standard piping length previously charged in outdoor unit. When the actual piping length exceeds the standard length, please add the supplemental refrigerant as follows.

Main

Main pipe:Piping between outdoor unit and multi-controller.

Branch pipe:Piping between multi-controller and each indoor unit. Arnount of additional refrigerant (kg) = Additional amount of main pipe pipe (kg)

Branch

Fig. 11-1

=~x(e,-3)

(One

+~ax

Multi-Controller)

Branch

(1,-2)

pipes

+Nbx

(lb-2) +Ncx(&-2) +Ndx (ed-2)

Table

11

-1

(kg)

+

additional amount of branch

is

Table

11-2 Amount of additional refrigerant

Outdoor Unit

MAR-F81

(Standard arnount of refrigerant

MAR-Fl

(Standard arnount of refrigerant 21.6kg)

M = Arnount of additional refrigerant for every (The value varies depending

Na,

(The

t,,

HTMB

17.6

kg)

O1

HTM8

Nb,

Nc,

Nd

=

Amount of additional refrigerant for every l m of actual length of branch pipe.

value, varies depending on the type of indoor unit.)

= actual length of main pipe (m)

tb,

&,Od

=

Actual length

(Equivalent Horse Power

130

(1.5

HP), 160 (2.0 HP), 200 (2.5 HP)

260 (3HP), 360 (4HP),460(5 HP)

130

(1.5

HP),

260

(3

HP),

on

the type of outdoor unit.)

of

branch pipe (m)

Indoor

Unit

Capacity Rank

160 (2.0 HP), 200

360

(4

HP),

l

m

of actual length of rnain pipe

460

(5

to

(2.5

HP)

Multi Type)

HP)

Additional Arnount

Na,

,,,,

(kg,m,

0.19

0.1

9

Nc,

(kglm)

0.030

0.045

0.030

0.045

Nb,

Nd

11-2.

Sub

Main pipe:Piping between outdoor unit and header. Sub pipe:Piping between header and each rnulti-controller. Branch pipe:Piping between multi-controller and each indoor unit. Arnount of additional refrigerant (kg) = Additional amount of main pipe (kg) +Additional amount of

pipe

(kg)

+~bx(8b-2)+~~x(e,-2)+~d~(id-2)+~e~(8,-2)+~f~(tf-2)+~g~(Q~-2)+~h~(!h-2)

Branch

Pipe

(Two

Sub

pipes

Multi-Controllers)

Branch

pipes

t

~ulli-conirolkr

Fig.

l

1-2

+

Additional amount of branch pipe (kg)

Bych

pipes

=

M

Standard piping

length

x

(10

-

2)

+

S

x

2

{(ti

Table

-

1)

11

-3

e,,

(m)

+

P,,

e2

&,&,eh

l

(e2

-l)} + Na x (ta - 2)

.tb,

4,

2

&,

te,

(m)

sub

Table

11-4

Amount of additional refrigerant

Outdoor

MAR-F81 HTM8 (Standard arnount of refrigerant

MAR-FIO1 (Standard amount of refrigerant

M

=

Arnount of additional refrigerant for every 1m ot actual length of main pipe

(The value varies depending on the type

S

=

Amount of additional refrigerant far 1 m o1 actual length of sub pipe. Na, Nb, Nc. pipe. (The

40

=

Aclual length of main pipe.

41,

t2

la,

tb

,

Unit

130 (1.5 HP), 160 (2.0 HP), 200

17.6

kg)

HTM8

21.6kg)

Nd,

Ne,

value varies depending on the capacity rank of indoor unit.)

=

Actual length of sub pipe (m)

h,

td,

te,

ef,

260 (3 HP),

130 (1.5 HP), 160

260

Nf,

Ng, Nh = Amount of additional refrigerant

.eg,

eh

Indoor Unit Capacity Ranks

(Equivalent Horse Power to Multi Type)

(2.5

360

(4

HP),

460

(5

HP)

(2.0

(3

HP),

360

(4

of

outdoor unit.)

HP), 200

HP), 460

(5

(2.5

HP)

(m)

=

Aclual length of branch pipe.

(m)

HP)

for

every

Additlonal Amount

M

(kglm)

0.19

Im

of actual length of branch

(kg'm)

0.125

Ne, Nf, Ng.

Nh

0.030

0.045

0.030

0.045

Na, Nb, Nc, Nd,

(kglm)

12.

DESCRIPTION

OF

OPERATION

12-1.

Simultaneous CoolingtHeating Operation Control Outline

12-1-1. Switching between the Cooling and Heating Operations for

Each Indoor Unit

The solenoid valves inside the muiti-controller are switched with requested commands sent from the indoor unii.

SVS

valve (at suction gas side) opens for a cooling command.

SVD

valve (al discharge gas side) opens for a heating command.

t

2-1-2.

Determining the Outdoor Unit Operation Mode (CoolingIHeating)

and Operation Frequency of the Compressor

The cooling or heating mode of the outdoor unit and Ihe operation frequency of the compressor are determined heating command frequencies of

by

difference between al1 ihe requested cooling command frequencies and al1 the requested

al1 the indoor units.

12-1-3. Controlling the Refrigerant Cycle in the Outdoor Unit during

SrmuItaneous Cooling-Dominant Operation

(I

)

FIOW

contro1

In order to divide the cooling exhaust heat appropriately to the indoor units in the heating operation and

outdoor heat exchanger, the opening of the between frequencies and by the operation frequency.

(2)

Pressure contro1 Constant high-pressure control is performed so that the capacity of the indoor units in the heating operation is maintained.

1)

2)

al1 the requested cooling comrnand frequencies and al1 the requested heating command

Outdoor fan control Switching between the outdoor main heat exchanger and the sub heat exchanger

PMV2

flow control valve is controlled by the difference

Since the high pressure outside air temperature is low and the difference between the cooling and heating command frequencies is

minimal, the main heat exchanger is switched to the sub heat exchanger which is srnaller than the

ordinary rnain exchanger.

12-1

-4.

Controlling the Refrigerant Cycle in the Outdoor Unit

may

drop even when the fan

is

shut down by the outdoor fan control

if

the

during Simultaneous Heating-Dominant Operation

(1)

Expansion valve control Control for preventing superheat is

(2)

~vaporaiing, temperature control The evaporating temperature control units in the cooling operation is maintained.

periormed

is

by

the outdoor heating expansion valve.

performed by outdoor fan control so that the capacity of Ihe indoor

(3)

Swltching between outdoor expansion When there is a minimal

by

the outdoor heat exchanger

the

flow. This results in capillary control being selected.

differente

is

between the cooling and heating frequencies and the heat absorption

low,

the

valve

control and capillary control

expansion valve is no longer capable of controlling adequately

12-2.

12-2-1.

(1)

PMV

SVS

SVD

Functions

Multi-controller

Valve functions

Symbol

(A,

B,

C,

(A,

B,

C,

(A,

8,

C,

svss

SVDD

SVH

and

Operations

Name of Valve

Flow rate contro1 valve

D)

Suction gas valve

D)

Discharge gas valve

D)

Pressure reducing solenoid valve

Pressure increasing solenoid

valve

Superheat solenoid valve

of

Solenoici

This opens to the extent and performance required of the indoor units in each

system. Opens when cornrnands from the indoor units in each

system Opens when cornrnands from the

system call for heating. Opens when number of units in heating operation

reduced (heating 4 shutdown or cooling). Opens when def rosting Opens while

Opens when number

increased (shutdown or cooling + heating).

Opens while discharge pipe from being blocked.

Opens when unit in cooling operation

Valves

Descriptlon of Function

corresponding to

call

lor cooling.

indoor units in each

starls.

oil

recovery is controlled in cooling.

o1 units in heating operation is

contro1 is performed to prevent liquid in

is

the

presenl.

capacity

is

(2)

Valve operatlons

Outdoor

Operation Mode

Shutdown

During operation

Indoor

Shutdown, fan Shutdown, fan Cooling Cooling Heating Heating therrno-contro1 OFF

Operation

Iherrno-contro1

Mode

OFF

SVD

OFF OFF OFF OFF

ON ON

SVS

OFF

ON

OFF OFF

PMV

(Normal)

Fully closed Futly closed

Rated opening

Fully closed

Rated opening

Fully closed

12-2-2.

(1)

Valve

Outdoor

functlons

Unit

Symbol

20SF

Name

of

Valve

4-way switching varve

Sub heat exchanger solenoid valve

Cooling solenoid valve

Outdoor flow control valve

I

solenoid valve

valve Solenoid valve for capillary

Cooling bypass flow valve

High-pressure release solenoid valve

Hot gas bypass solenoid valve Solenoid valve ior stariup

com~ensation Gas balance

p--p

control

-

DescrIption

Selects whether outdoor main heat exchanger is to be used as condenser or evaporator. OFF: Condenser, ON: Evaporator

Selects whether outdoor main heat exchanger or sub heat exchanger is to be used.

OFF:

Main exchanger,

Selects whether the sub heat exchanger is going to be used

or

not,

1

Opens when sub heat exchanger Opens for cooiing-oniy operations.

L

Controls flow to divide cooling exhaust heal between indoor units in heating operation and outdoor heat exchanger during sirnultaneous cooling-dorninant operations.

Its opening

I

coolingtheating difference.

I

Its opening is adjusted by the adjustrnent signal

frorn the multi-controller.

Opens or closes to select the expansion valve or capillary tube coolirig/heating during sirnultaneous operation (coolinqlheating) under the heating-dorninant operation.

Degree of opening is controlled by discharge and suction temperature.

Opens and closes with the heat exchange temperature

(TE).

Opens and closes with the pressure and outside air

Opens

side starts up. Opens when the

when the compressor (No.

is

increased

acmrding to the diflerence of

Inverler cornpressor is shut down.

of

Functlon

ON:

Sub exchanger

in

accordante

is

to be used.

with

2)

at the non-inverter

I

l I

l

(2)

Valve

operations

Outdoor Operation Mode

Cooling operalion

Heating operation

Simultaneous coolingdominant operation

Simultaneous heat ing-dominant operation

13.

OPERATIONS

13-1.

Temperature sensor

Multi-Controller

SV13

ON

OFF

ON

OFF

ON

OFF

ON

C,

SV15

OFF

D)

and pseudo saluration temperature (Thx)

20SF

Outdoor exchanger

Sub

main

heat

heat exchanger

-

Outdoor main heat exchanger

Sub

heat

exchanger

Expansion valve

Capillary

OF

EACH

According to a temperature difference belween the evaporator outlet temperature

(1)

Performs the open compensation o1

only, and Cooling-dominant operation)

(2)

Performs the opening degree of

(cooling only, cooling-dominant operation)

SENSOR

(ThA,

B,

SV14

ON

OFF OFF

OFF OFF OFF

OFF

ON

OFF

PMV

the

outdoor flow rate contro1

SV16

OFF

ON

OFF

ON

OFF

ON

in each system. (Cooling

PMVP

-

Opening degree

control

Opening degree

control

valve.

-

13-2.

Outdoor

Unit

Pressure sensor

(High pressure)

Suction temperature sensor (cooling coolingdOminant 'peration1

heating-dOminant 'peration)

Discharge temperature sensor (cooling, heating, coolingdominant, heating-dOminant Operation)

Outdoor unil heat exchanger sensor (heating, heating-dominant operation)

only, heating only,

Determines the frequency of the compressor Inveiter side status of non-inverter side. (cooling only, heating only, coolingdorninant, heating-dominant operation)

Controls the outdoor blower. (cooling only, cooling-dorninant operation) Controls the hot gas bypass

1) Pd < 13kg/cm2~: Open (cooling)

2)

~d<l 7kg/cm2~: Open (cooling-dominant sub heat exchanger operat ion mode)

Switches the outdoor unit exchanger operation

Controls the open degrees of PMVl

Operation temperature:

Stops when the suction temperature

to detect the suction temperature abnormality. Controls open degrees of PMV1 (cooling bypass).

Operation temperature: 11 0°C

Stops when the discharge temperature discharge temperature abnorrnality.

Multiples the time during TE C -3°C and performs the defrost contro1 after

55

minutes. Controls the outdoor unit blower. Controls the high pressure

Opens when

(25

minutes when the Wwer is turned

TE

r

SV2.

main heat exchanger operation and sub heat

(cooling bypass)

20°C

>

40°C

continues for ten minutes due

>130°C due to detect the count

ON

release.

11°C.

and

ONIOFF

for the first time.)

3

Outdoor temperature

High pressure switch

Low pressure switch

Operation pressure:

0.25

kg/crn2~

sensOr

Controls the hot gas bypass

Opens when the outdoor temperature C 0°C

Opens when the outdoor temperature Controls the outdoor blower. Identifies whether the forced cooling operation

The forced

temperature Stops when Pd>

compressor side due to Stops al1 the operations

abnormality. (Cooling, cooling-dorninant operation) Stops

al1 the operation after counting

to detect the gas leak abnormality. (Heating, heating-dominant operation) Ignores the low pressure switch operation. (Defrost operation)

cooling operation

>

25%.

30

kgtcm2G in both of inverter side and non-inverter

SV2.

(10

HP).

e

13°C

(8

HP).

is

performed.

is

performed when the outdoor

detects the high pressure abnormality.

30

seconds after due to detect Ihe gas leak

10

rninutes by the timer counter due

14.

COOLINGIHEATING AUTOMATIC

REMOTE

CONTROLLER

14-1.

Cooling/Heating

Basic variation

rwm

temperature (example)

Automatic

of

Change-Over Operation

Load

variation

n

a

I

-

Cooling

operation

Fig.

0.5deg

14-1

15.

IMPORTANT MATTERS

T0

BE

CHECKED

BEFORE

TEST

RUN

AND

15-1.

Make rnicroprocessor.

Registralion of each corresponding to the capacity rank setting Roorn B (unit

Indoor

unit

SERVICING

Registered

sure code nurnbers of the indoor units connected to the multi-controller are correctly registered in the

B),

Roorn C (unit

Capacity rank Code number

Indoor

indoor unit capacity is important. Register the correct indoor unit code numbers

Capacity

Unit

Code

rotary switch on the printed wiring board far Roorn A (unit

C)

and Roorn D (unit

Table

No connection

O

rank

sening

switch

Numbers

D).

15-1

Code

130

3

table

160

4

Roorn

A

200

4

.

Room

260

5

B

360

Roorn

8

C

7

Capacity

160

rank

Capacity

200

rank

Capacity

260

rank

A),

460

10

Note:

Fig.

15-1

1.

At factory shipment, the indoor capacity rank setting switch is set at the

"0"

setting, the air conditioner does not operate.

2.

If

the power is on and even if you operale the capacity selection switch, the registration will not change. Make operaling press the reset switch on the multi-controfler for more than three seconds, and then

turn off the power to the microprocessor once.

3.

If

the

code nurnber is not registered correctly, the required cooling, heating capacity will nol be attained, or this could be the cause of malfunctioning. indoor unil code numbers exceeds

conditioner will not operate.

sure you operate the setting switch before turning on the power, or after

Also, when the iotal of the registered

21

(8

HP

outdoor

unit)

and

27

"O".

With the switch leit

(10

HP

outdoor unit), the air

at

15-2.

Connections

of

Refrigerant Piping and Control Wires

between Indoor Units and Multi-Controller

Check

terrninals. The control wires for indoor unii A of which refrigerant pipes are connected to the refrigerant for unit A should properly. Confirm the connection for units

the indications on the label at the refrigerant piping connection

be

connected to the terrninal for unit

B,

C

A,

otherwise the operation won't

and D in the same manner.

ports

and control wire connection

be

carried

out

port

Multi-Controller Connector Termina1 location

15-3.

Check that the control wires between the indoor units and Multi-controller and between the multi controller

and outdoor unit are properly connected. Check

Connections of Control Wires between Units

I

Inside

of

electric

Far

unit

A

partc

box

For unit

to

Multi-Controller

B

Fig.

15-2

see the termina1 numbers for the control wires.

For

unit

C

Refrigerant piping joint

For

unit

D

of indoor

unit

I

side

z

Fig.

15-3

I6.TEST

RUN

16-1.

Conduct the test run as follows. Perform the test run according to

Test Run

Check before test-run.

Procedure

Check basic matters of installation works. Ensure

-

Che&

Remove

trou bles

the test run.

1

lhe

cause of

Check step by

Remedy malfunctions. following the Refer

to

I

Make

Note:

16-2.

Make sure to confirrn there is no fault in the installation works.

Check

sure to write the results on check-list

service and maintenance in the future.

before

Test

Run

step

follawing

step

3

(Service points), if needed.

#l

and

#2.

each

lhe

che&-list

They will

steps on the

2.

and write

flow-chart

listeci on

be

che&

list.

lo

fill up the check-list

dawn

the

page

44.

very helpful docurnents for

1.

resultr.

Table

16-1

Check

Is

the

installation work finished correctly?

1.

Is

the

capacity rank setting switch on multi-controller control correctly nurnber?

2.

Are there wrong connections of the refrigerant pipings and control wirings between indoor units and multi-conlroller?

3.

Are there wrong connections Multi-controller, and multi-controller and outdoor

4.

Is the circuit breaker installed?

to

each indoor unit code

board registered

of

both control wirings between indoor unii and

M/c(~)

M/C

(2)

unil?

Breaker capacity

Unit A

Unit B

C

Unit Unit

D

Unit

A

Unit

B

Unit

C

Unit

D

list

1

Indoor unit

rnodel

name

Registered

nurnber

A

code

5.

Is the breaker capacity adequate?

6.

Is there any wrong wiring of power

cable?

7.

Is the wire size correct?

8.

Is there a wrong wiring between power source outlet and outdoor unit?

9.

Is the grounding wire attached?

10.

Is there adequate resistance? (more than

11.

Is the voltage correct?

12.

Does the drainage flow smoothly?

13.

Is the heat insulation sufficient? (Especially connecting parts of indoor unit and

muli-cont roller)

14.

Is there a shorì-circuit of air flow frorn indoor unit?

15.

Is there a shori circuit of blowing air from outdoor unit?

16.

Is the refrigerant added adequately?

17.

Are the valves lully opened?

18.

Is the remote conlroller normal?

10Mn)

Power cable Control wire

Insulation resistance Voltage

mm2 rnm2

MQ

V

16-3.

After completion of the check before the test mn, conduct the test run check with the tollowing steps listed in the check

(1)

(2)

(3)

(4)

(5)

(6)

Test

As for the actual procedure of check list 2 (See page More than

heater. In the case

or heating operation won't work due to The test run check, in principle, should be rnade for each and every indoor unit.

operating piping and

To confirrn cooling and heating operation, operate the unit under the mode within the possible temperature range to operate the units.

There are few cases when one of two operation modes is norrnal but the other is not. Make sure to write down the

For this check, you need al least a tester and screw driver

lherrnometer, pressure gauge

Run

Check

Iist

2.

40.1,

and simultaneousty rernove the troubles.

12

hours in advance of the test run, turn on the switch lor supplying power to the crankcase

that the compressor was not warrned up sufticiently by crank case heater, the cooling

protettive

simultaneously, you can not carry on the check for the cross connection between refrigerant

contro1 wiring.

items you have checked.

and

other tools (spanners, pliers, nippers, and pins for reset switch.)

circuit activated.

(+,

-).

If

the multiple units are

We recornrnend you to prepare

a

Operatlon Procedure

1.

Turn on the power.

2.

(Check the Fan operation)

Set the operation mode to

and

start operation.

3.

(Check the Cooling operation) Set ihe operaiion mode to "Cooling" and stari operation. (Once you stopped operation you have lo wait for 3 minutes to restart due to the

built in restart

delay circuit functioning.)

"Fan",

Table

16-2

Check list

2

Check Iterns

Is the

LED

on remote controller blinking? Are

Ihe conditions initialized for

operation?

Is the air flow discharging from

air-outlet?

1s

there abnormal noise from fan? Does the compressor start normally? Is there abnorrnal noise from the

cornpressor or pipes? Is the cool air flow coming out? Is the air flow circulaling

adequately?

Conflrmatlon

MIC

(1

)

MIC

(2)

amonamom

rr=crrrr

CCCCECCC

33333333

In this case, check every indoor unit

operating

simultaneously. Set the temperature to the lowest.

4.

(Check for

the

heating operation) Set the operation mode to heating

and

start the operation. (Once You stop~ed operation, you have to wait for 3 minutes to restart due to

the

built-in restart

delay circuit functioning.)

1)

(Note

Does Ihe thermostal work norrnally? (Confirm that compressor stops at high temperature setting, and restarts at low temperature setting.)

Is the temperature diff erence correct

between suction air and exhaust air?

Is the voltage of power supply

correct?

(380

-

41

5V

f

10%)

Is the operating current correct? Is the operating pressure correct? Does the compressor

stati norrnally?

Is there abnormal sound? (ComPressor~ PiPings)

Is the warm air flow coming out? Is the air flow circulating adequately? Does the thermostat work normally?

(Confirm that cornpressor stops at low temperature setting, and restarts

at high temperature setting.)

p

/

Operatlon

Procedure

Check

Items

ConfirmatIon

M/C

(1)

UmOPUmOP

=====,C==

ECCEECCC

33333x33

MIC

(2)

In this case, check every indoor unit operating simultaneously. Se1 the temperature lo

the highest.

1.

When

the

Note:

16-4.

protect the units.

Guidelines

outdoor temperature rises above

16-4-1. Guideline for SuctionlDischarge Temperature

(1)

If

the difference between the dry-bulb temperatures al the suction port and discharge conditioner is lhe system is operating properly. (Operation at max.

(2)

11 the difference between the dry-bulb temperatures at Ihe suction conditioner is the system

10°C

or more when operation has continued for al least

18°C

or more when operation has continued

is operating norrnally. (Operation at max.

Is the temperature diflerence correct between suction air and exhaust air?

Is the voltage

correct?

Is the operating currenl correct? Is the operating pressure mrrect?

of

power supply

(380 - 41

21°C,

Hz)

5V

f

1OoA)

it will

for

be

forced into reverse operation to

Diff

erence

30

port

and discharge

at

least

30

minutes in the

port

"COOL"

port

"HEAT"

of the air

mode,

of the

air

mode,

16-4-2. Guideline for

If

the current is within f

syslem is operaling normally. (Cooling: operation at max.

The

current varies as lollows depending on the operating conditions.

(t)

When the current is higher than the standard current

High indoor/outdoor temperatures Poor heai dissipafion of outdoor

(2)

When the current

Low indoor/outdoor lemperatures

Gas leak (insufficient refrigeranl)

Operating

15%

of lhe value given in the catalog in both the heating and cooling modes, the

is

lower than the standard current

Current

unii

(during cooling)

Hz:

heating: operation at

max.

Hz)

16-4-3. Guideline

(1)

The operating pressure level is generatly as listed below.

for

Operating Pressure

Table

16-3

16

to

20

High pressure: Low pressure:

Heating

Note:

(2) Changes in high and low pressures caused

Cooling: Operation at max.

The above figures indicate the pressure levels established temperature

1)

Cooling:

Rise in indoor ternperature:Rise in high and low pressures Drop in indoor temperature: Drop in high and low pressures Rise

-

Drop

2) Heating: Rise in indoor temperature: Rise in high and low pressures Drop in indoor temperature: Rise in outdoor air temperature: Rise in high and low pressures

Drop in outdoor air temperature: Drop in high and low pressures

High pressure: Low pressure: 3 to

"C)

in

outdoor air temperature: Rise in high and low pressures

in outdoor air temperature: Drop in high and low pressures

3.5

15

kg/cm2~

to 5.5 kg/crn2~

to

21

kg/cm2G

4.5

kg/cm2G

Hz,

Heating: Operation at max.

by

changes

Drop

in high and low pressures

Indoor:

Outdoor: 25°C to Indoor:

Outdoor:

15

rninutes after operation starts up. (dry-bulb

in

operating conditions

Hz

18°C

15°C

5°C

lo

to

32OC

35°C

25°C

10°C

16-4-4. Flashing

When the power is turned on, Ihe remote controller's operation lamp will flash (ON for

0.5

sec.). This is not indicative of a failure or rnalfunction.

16-4-5.

In the following cases, "PREHEAT/DEFROST" will flash (at 4 second intervals) on lhe

remote controller. This is not indicative of a failure or malfunction.

Case:

PREHEATtDEFROST

1.

When the cornbination of indoor units exceeds the capacity or when the code number entered by the capacity rank setting switch

2.

When the indoor unit assigned selector switch.

of

Remote Controller's Operation Lamp

Flashing

is

incorrect (so that capacity

by

the command has been excluded by the operaling mode

is

exceeded).

0.5

LCD

sec. and

display

OFF

of

the

for

17.

SERVICING

The remote coniroller, multi-controller and outdoor unit are provided with check displays (remote controller)

and

LED

displays ~microprocessor control

displays identify the operating

Given below are the methods which use this self-diagnosis function to identify what is malfunclioning or

failing in the air conditioner.

(l)

Basically, trouble locations are identified by the check displays on the remote controller.

(2)

Details o1 trouble in the muiti-controller or outdoor unit are indicaled by the check muli-controller or interface control

(3)

Trouble in the multi-controller is that trouble in the multi-controller can be identified frorn the outdoor unit as well.

PROCEDURES

PC

board) in order to check the operating conditions,and these

status.

PC

board.

also

indicated on the interface

LED

displays on the

PC

board in the outdoor unit. This means

Following Notes are shown in Fig.

Note Note Note

Note

1:

2:

3:

4:

This indicates the codes for the trouble in the indoor unit. This indicates the codes for the trouble in the heat source unit. Code "04" indicates serial signal trouble. There is no code display on the remote controller for over capacity, but the CodeW04" indicates serial signal trouble. compressor or high pressure trouble.

is no code display on the remote controller for trouble in the power supply phase

There sequence but the

"PREHEAT/DEFROST"

17-1.

"PREHEATtDEFROST"

"21"

is indicated for trouble in the non-inverter

display will flash.

Remote controller Che& code display

Multi-Controller

(MfC)

Outdoor unit

Interface Control

Inverter Control Board

Multi-Controller

(

M/c)

Board

(IIF)

(INV)

Remote

controller

Indoor

unil

"99.

(Note

1)

(Note

2)

(Note

3)

'15'

1

Remote controller

serial signal abnormality

-

t

Indoor unrt abnorrnality

*TA

sensor abnormality

*TC sensor abnormality 'Od"

=

Water level abnormality "Ob'

Serial

signal abnormality '04'

Outdoor unit abnormality

Power supply circuit abnormality '17" TE sensor abnomality

G-Tr abnorrnality "14"- Compressor abnormality "ld' abnormality

Breakdown

High pressure SW operation

11

-

"OC'

V")

--)

"1F'

"21"-

MJC

abnormality

Th

(A)

sensor abnormality

Th

(8)

eensor abnormality

Th (C) sensor abnormality '82'

Th

(D)

sensor abnmality

Th

(X)

sensor abnorrnality

-

Water leve1 abnormality

e

Serial signal abnormality

*Outdoor unit capacity

is

not detected Over capacity MIC PC board abnormality

Outdoor unit abnormality

ThD1 sensor abnormality ThD2 sensor abnorrnality ThS sensor abnormality

T0

sensor abnormality

m

Pischarge temperature Suction temperature

abnormality Pressure sensor abnormality

Low pressure abnormality Non-inverter wrnpressor abnormality High pressure abnonnality Serial signal abnormality Power supply

sequence abnormality

gas

phase

leak

(Note

'80'

'81'

'83'

'84'

'Ob'

'04'

'88' "89'

'8A'

4)

A

-

'AO' 'Al'

'A2'

"A4'

'AS

'A8'

-A

7

"AA'

'AE'

'AD'

'21'

'04'

'AF'

'1

C"

Fig.

17-1

-L

WC abnormality

Displays each

abnormality

Power supply circuit abnonnality INV abnormality

code

of

IWC

"17

'AB"

18.

CHECK

CODE

DISPLAY

SYSTEM

CHART

Remote

COdO

controllar

dlapley

chock

W

check code dls I

(Display

Em

SW = 1

I/F check code displa

(Display

SW

=

20 : E

r

:

E

l%

E*m

h)

Inverior check

code

dlsplay

19.

IDENTIFICATION

When there the check code.

Whether the trouble location check code.

is

a sign of trouble, do not reset but press the "check switch

PROCEDURES

is in

the

indoor unit, multi-controller or outdoor unit can be identiiied by lhe

on

the remote controller and check

When the failure has been identified to be in the

LEDs

on

the

contro1

causes of multi-controller failure can also

PC

board incide the electrical parts box of the Multi-controller or outdoor unit.

be

the

multi-controller or outdoor unit, its cause can be

identified from the outdoor unit.

identiiied

The

by

(1)

Press the check switch

(See

pages

49

to

on

the remote controller

56

for the checking rnethod.)

operation lamp lighted?

Is

PREHEATIDEFROST

on the remote controller'c display?

and

check the check code.

flashing

)YES-

LCD

Trouble in indaor uni1

%C'

Failed

'Od'

Failed

'Obm Incorrect

'04'

Serial signal trouble

'99'

Remote contmlter serial trouble

Tmuble in outdoor unil

'17'

Defective current circuit

"1

4'

Defective

'l

d"

Defective comprescar

'1

F'

Breakdown

'21'

High-pressure switch operation

v

Refer to

identification' on page

I

TA

JC

'Check

sensor

water

Level

G-Tr

codes and

51

lo

56.

the remote controller? not operating.

1C : Trouble in outdoor unit

C

Check the check

I

by the interface control the outdoor unit.

function (outdoor unit)'

I

v

LED

display on the

YES

code

PC

indicated

board of

NO

15

C

I

Che& the check code indicated

I

by the LED display on the control controller or control

unit.

Refer (multi-controller)' on pages and function (outdoor unit)' on pages

Indoor unii fan is

Detective fan motor or

:

Trouble in multi-controller

V

PC

board of the multi-

the

interface

PC

board of the outdoor

lo

'Self-diagnosis function

66

or

to 'Self-diagnosis

57

to

63.

I

64

t

Is the power

supplied between pin 1 and 2 of

indoor unit termina1 plate?

AC

220

YES

-

240V

L

<

Indoor unit abnormality

Indwr unit rniaoprocessor

is

damaged

Remote controller is damaged. Wrang wiring between indoor unit and remote controller. and etc.

Indoor unit trans

Is

switch set correctly?

the power supply wiring correct?

the

.

capacity

is

damaged.

rank setting

NO

z

NO

Is the power supplied

the outdmr unit?

YES

C

Total abnormality

-

Inter-unit wiring connection

damaged.

(Wrong wiring, cut wire,

damaged wntact.)

e

*

Multi-Controller abnormality

Wrong-setting ot the capacity rank setting switch.(over-capacity sening)

c

Outdoor unit abnormality

Power source phase (Check code

of

M/C

and

Correct the phase sequence of

to

r

'AF'

is displayed on

iF

PC

board.)

NO

sequence

C

Turn on

>

abnormality

the

LEDs

Me

power

Norma1

the

power.

Indoor unit is not selected

by

lhe

Mode Select Switch

Retry to select the

NO

-

r

<

Indoor unit is damaged. Remote controller is damaged.

Indoor unit abnormality

>

20.JUDGMENT

OF

MALFUNCTIONS WITH

THE

REMOTE

CONTROLLER

20-1.

Check:

Malfunction

Pressing

on

the

time

Blinking

INDICATION

Check

check

part

in

The The

Abnonnal phase of power supply

Display

switch

on,

the

display.

"PREHEAT",

total

capacity of

indoor unit is excepted previously by

Operation

comprescor's

"DEFROST'

the

connected indoor units is too large.

ONIOFF

the

operation mode selector switch.

times

and

the

check

code

are

shown

Blinking

-

At high pressure

"Check"

switch operation

1

Check

switch

Reset

switch

By

pressing the hole with a srnall pin, remote aontroller

(All the rnemories are cleared.)

Displays check

Resets

F

I

Clears check code by (The start-up nurnber of compressor remains

Fig.

code

by

1

the microprocescor of indoor unit

10

seconds continuous pressing.

20-1

second pressing.

by

power

is reset.

5

seconds continuous pressing.

as

il

is.)

20-2.

By

How

pressing

information

to

Read

CHECK

of 2 faults

key,

tirnes of No.

x

16

units

the

Malfunction

l

are

displayed

unil

compressor-ON

on

the

Check

time

display

Monitor

actuations

area.

Display

as

well

(2

sec.

per one phenomenon).

as

the

check

code

Dispiay h 4

Display

Check

code

Unit

I

MALFUNCTION

dgik

of

In

7

segrnents

information

nu-rnber

CHECK

hexadeejmal

11

che&

L

The

first

I

notatim.

mde

detected

Example

In

~aseof

Example

ki

case

ot

l

ihe

nurnberoflinm

2:

ioom

temperawre

of

cnmprawractwiicns

sensw

of

No.

1

unit

in

lrwbie.

ai

164.

No

display

Ls

made il

L

The

last

detected

there

Is

no

fault.

Example

Far

No.

15

connecting

(serial

signai)

Fig.

20-2

3:

unit,

&le

firctly

are

rown

between

in

buble.

temperaire

lhe

VKkor

se-

and

ovMaor

sec;oKly

unib

20-3.

The

Check Code

and

the

Judgment

Table

20-1-A

Check

code

DCI

fl

b

[

Method of

Judgment is performed on the

stop of outdoor unit. (Operation continuing)

Judgment is perforrned on the

presente

=

Judgment is performed on the

The resistance value is infinite or

zero. (Operation continuing)

the serial signal from

indoor iinit's board connector PJ11

by

(IC06). Float switch rnovement (Operation continuing) (Outdoor unit stops fully.)

room temperature sensor.

Judgment

Of

220

-

240V

using the photo coupler

the

Which

Inter-wire for

indoor/outdoor units. TRS Crank case heater. Compressor case

therrnostat.

Drainage systern.

-

Drain pipe

m

Drain

Control

PJl1

m

Photo coupler.

m

Room temperature

senso;

Parts

thermal switch

is

systern.

connector.

(TA).

stuffed.

How

about

the

Conditions

Can't discriminate the signal

a

due to signal.

.

The serial signal has stopped because the case thermostat

circuit was opened due to low

temperature in the

cornpressor case.

Float switch movement.

Due to a bad connector contact, the photo coupler on the PC board becomes faulty, and the like.

=

Lead wire cut.

=

Loose connector due to bad contact.

Wire cut in the sensor. Short circuit caused

insertion of the lead wire.

Short circuit in the sensor.

stop or wrong

by

a

the

m

Od

~udgrnent is performed on the

indoor heat exchanger sensor (W.

The resistance value is infinite or

zero (Operation oontinuing).

Heat exchanger sensor

(TC).

Lead wire cut.

-

Bad connector contact due to

loose insertion. Wire cut in the sensor.

Short circuit due to 1he

insertion of lead wire.

Shori circuit in the sensor.

Table

20-1-A'

How

about the Operation

Although the fan is carrying on the operation, cooling or heating operation does not work because outdoor (In norrnal operation, the

LED

for the serial signal

will blink.)

Indoor unit is operating, bul outdoor unit stops.

Cooling operation carries on with therrnostat at off position. Heating operation carries on with thermostat at on position.

una

stops.

Method

Check up lhe inter-wire for wrong

wiring, disconnection, or bad

contact. Check the current at

thermostat.

In case that termina1 voltage is applied at the crank case heater connector, check for crank case heater.

In lhe case of at the crank

for cornpressor case

Drainage pipe repair.

Drain pump repair. Check lhe connector contact points.

=

Check on the PC board.

Check the resistance value of sensor.

-

If

there are any peculiar defects,

replace.

of

Diagnosis

TRS

no

terminal voltage

case

heater, check

thermoslat.

TA

Notes

For inverter type, when

aluminum radiation temperature goes over the serial signal circuit will be open.

By making the serial signal circuit of the multi-controller, etc., an

open

circuit, the type that forms a

protective circuit.

There is no

connector.

Due lo the common use of the

board for various models, this

PC

code rnay appear without drain purnp is connected.

setting value, the

220 - 240V

for

il

the model

PJ11

For cooling operation, freeze prevention contro1 does not

For heating operation, outdoor unit carries on its work interrnittently under lhe high temperature

release control.

=

For cooling operalion, freeze prevention control does not work.

For heating operation, outdoor unit carries on its work interrnittently under the high temperature release control.

work.

Check the resistance value on the TC sensor.

If

there are any peculiar defecls,

replace.

Table

20-1-8

Check

code

ICI

7

1

5

i

1

i

d

Method

Judgment is performed on the over-current protection circuit or the insufficient voltage circuit . (Short time) Fu11 stop.

Judgment is performed on the temperature sensor (ThA,

The resistance value is infinite or zero.

Full slop.

At lhe stop of compressor, operation judgrnent is when

the

current sensor circuil.

Full stop.

-

Judgment is performed on the (LED

50)

inverter

(MCC-1521).

Full stop.

Judgment on the abnormality of

interface board.

,l

stop

Judgment is performed on the over-current protection or the insulficient voltage

protection circuit. (Short time)

Full stop.

of Judgrnent

protection

B,

C,

D).

perforrned

current comes into the

red light on the outdoor

contro1 board.

circuil

Which

Power supply.

Wiring.

Fuses. Giant transistor.

Base drive board. Smoothing capacitor.

Rectifier.

Diode.

=

Cornpressor. Temperature sensor

(ThA,

Assembiy of

PC

14. Id.

=

21

ThDt,ThD2.

Ths sensor.

Pressure sensor. Low pressure switch.

Power supply. Wiring. Crank case heater. Comprescor.

6,

board.

items.

Parts

C,

D).

How

about

the Condltlons

Under voltage protection circuil functioning, due to voltage reduct ion.

m

Over-current protection

circuit functioning.

Operation stops due to malfunction

controller.

Due to an abnorrnality detected in the current, operation stops.

-

Under voltage protection circuit functioning, due voltage reduction. Over-current protection circuit functioning.

High pressure switch functioning.

-

Lead wire cut. Bad connector contact.

Pressure abnormal. Loose or cut in sensor

mnnectors. Discharge air temperature abnormal.

Under voltage protection circuit functioning, due lo

voltage reduction.

Over-current protection

circuit functioning.

in

the muiti-

a

to

Table

20-1-8'

How

about

the

Operation

Operation stops due to inverter tripping.

Restart does not work.

Operation stops. Restart does not work.

Operation stops Reslart does not work.

Method

Check the power supply.

Repair the disconnection, loose contact or cut of wires, fbses or reaclors.

Replace the defective parts. Check the giant transistor, base

drive, smoothing capacitor,

rectification diode, compressor and other connections.

Check the operation of the PC board.

-

Check the contact condition of multi-controller temperature sensor connector and specif ications.

of

Diagnosis

its

-

Multi-controller type.

Notes

Operation stops. Restart does not work.

Operalion stops. Restart does not work.

Check14. Check Id. Check

21

items.

Check every sensor resistance.

there are faults of specifications,

repiace.

=

Capiltary tube is stuffed up.

Check

sensor resistance.

m

Check the

=

Repair the disconnection, loose

contacts and cut

power relay.

power

supply

in

wiring

If

and

Table

20-1-C

Check

code

I

F

2

4

q

Method

Judgment is performed when the

larger

one continuously cornes into the

C

urrent sensor circuit.

Full stop.

Judgrnent is performed on the continuous time for the high pressure switch functioning.

Wrong wiring between the

remote contro1 and

units, or a selection mistake.

(Stop of operation)

of

Judgment

AC

current than the rated

the

indoor

fan

Parts

motor

Which

Power supply. Wiring. Crank case heater. Compressor.

Operating condition. Highpressure switch. Inner over-load relay. Indoor

capacitors. TC, TL sensor board assembly.

=

Inter-wiring between remote controller a nd indoor units. Unil No. setting.

PC

How

about

the

Conditions

Under voltage protection circuit functioning, voltage reduciion. Over-current protection circuit functioning.

Malfunctioning detection circuit.

High pressure switch functioning operation.

Can't discriminate the signal due to a stop or wrong signal.

by

because of

of

current

overload

How

about

the Operation

Table

Method

20-1-C'

of

Diagnosis

Notes

m

Operation stops.

Restarl does not work.

Operation stops.

m

Restarl does not work.

For wrong wiring,operation

does not start.

m

For wrong setting, operation starts depending on the case.

Check power circuit. Check the causes of abnormal

loading. Check

Check the causes loading.

PC

board works.

of

If

there are peculiar

abnormal

defects, replace. Check

the

TC,

TL

sensor

resistance. Check PC board works in.

Cut, bad connection of inter-wiring.

Double setting

No.

l.

of

indoor unil

Both indoor and outdoor unas.

Termina1

A,

B,

C.

20-4.

The

Malfunction of

the Outdoor

combination

contents below.

of

Judgment

two

display

Unit

selecior

with

switches

the

SeIf-Diagnostic

(SW1,

SW2)

and the

LED

Function

(LD1

-

LD8)

indicate the

Park

lnterface control

location

board

r----

1

Demand

interface board

Multi-Control- Multi-Control- Cornpressor

ler

Fig.

20-3

(l)

control

ler

Electric

7

Inverter con-

7

I

Compressor

(2)

parts

location

segmenled

Inverter

LED

I

Oisplay

selector

20-4-1.

Sendinglreceiving switching

If

the

Set

the

Selector Switch

at

"O"

serial signals

disptay

selector

and

SW2.

Dispiay

seledor

Fig.

20-4

SW1

on Outdoor

operating

l"--

msw4

Push

switch

Interface

status

"-

Display seledor

2

I

SW3

control

are displayed. Following

board

Unit

Interface Board

is

contenls are indicated

by

Display

selector

sw2

Indication

Table

20-2

LD71

7

Segmented

LD72

LED

Display

L073

LD74

Sendinglreceiving status of

O

signal

Operating instruction from M/C

2

3

.

Outdoor unit operating condition

4

Operaling instruction

from

6

Inverter operation status

9

M/C

(l)

(2)

serial

Operating mode

Instruction frequency

Operating mode

Instruction frequency

Between

M/C (1)

sending

on'y

[SI

Receiving Sending and

only

[Jl

Heating cooling/heating [HC], Cooling

Heating frequency

(See table

Heating [H], Cooling [OC],

Simultaneous heating [Hc],

Defrost cooling

M

/C

operation

[O]

No:

1

unit: [l]

2

unil : [2]

Heating coolinglheating [HC]. Cooling

Heating frequency [O0 -1

(See table 20-3.)

Abnormal

Between

M/C

No

sendinglrecei ving

receiving

[H],

Sirnultaneous

[C],

Stop

20-3.)

[Jo],

Simultaneous

[hC]

Frequency release No: Yes:

[H],

Simultaneous

[C],

Stop

Operating

IC1

irequency

[O

IE1

table

[-l

[O0 -1

[O]

[-l

-

(2)

H

[l]

F]

(See

20-4.)

[O]

Fj

F]

Between

Cooling frequency [O0

(See table

Cooling irequency (See table 20-3.)

Non-inverter

IN"

mrnpressor

Abnormal

Normal

20-3.)

[O0

[O]

-

-1

[E]

lF]

fl

10

1

l

Operating instruction to inverter

Power supply frequency

IC1

Ab"orma'

50Hz

[5]

60Hz [6]

Instruction

irequency

[O

lE1

tabie

[O]

-

F]

(See

20-4,)

Table

20-3

Display

code conversion table

Dlsplay

code

Frequency conversion value

(Hz)

Display code

Frequency conversion

(Hz)

value

Display

code

Frequency

conversion value

(Hz)

20-4-2.

If

8et

00

O

10

44.1

01

O

l1

47.2

02

O

12

50.3

03

3.9

13

53.4

Table

05

04

6.9

14

56.5

20-4

Display code conversion table

10.0

15

59.6

06

13.0

16

62.7

07

16.2

17

65.8

08

19.3

18

68.9

09

22.4

19

72.0

OA

25.5

1A

75.1

OB

28.6

1B

78.2

31.7

81.3

I

03456789ABCD

O

30.5

the

Selector Switch

at

"2"

38.1

45.8 42.0

53.4

61.0

68.7

SW1

on Outdoor Unit Interface

76.3

83.9

91.6

Board

OC

1C

103.0

is

OD

34.8

1D

84.4

110.6

87.5

E

OE

37.9

1E

OF

41.0

1F

90.0

F

121.6

Malfunction information is displayed when display selector switch

Table

20-5

7

Dlsplay selector

20-4-3.

Check code

Outdoor unit

SW

O

The

ErAO ErAl

ErA2 ErA4 ErA5

2

lndication

Check code

display

Outdoor unit.

MIC

(l),

MIC

(2)

Check Code

ThD1

sensor abnormality

ThD2

sensor abnormality

ThS

sensor abnormality

T0

sensor abnormality

TE sensor abnormalily

Judged

-

LD71

[E]

by

Outdoor

Table

Defects

segmented LD72

Outdoor unit [rl

M'C

(l) [l1

M'C

(2)

Unit and Multi-Controller

20-6

Judgment

of

sensor, wire cut, short circuit, connectors

SW2

[21

is sei at

"O".

See

LED

dispiay

LD73

Check

For

the contents. see table

the check code.

LD74

20-6.

off

Check

ErA6

code

Judgment

Discharge air temperature abnorrnality (detected by

Refrigerant under-charge, gas leakage, over-loading operating condition

PMV1 rnalfunction (Defect of valve body, defects of coils, connectors off, wire cut.)

=

PMV1 stuffed up

(In cooling, simultaneous cooling operation)

SV13 malfunction PMV2 malfunction (Defect of valve body, defects of coils, connectors off, wire cut,

PC

board defects)

-

PMV (A - D) in M/C malfunction SVS (A - D) in M/C malfunction Defect of expansion valve, expansion valve stuff

(In heating, simultaneous heating operation)

4-way valve rnalfunction

SV14

malfunction (Defect of valve body, defects of coils, connectors off, wire cut,

PC

boards' defects)

SV16 rnalfunction

PMV

(A

-

D) in

M/C

malfunction

Defect of expansion valve, expansion valve stuffed up

ThDI and ThD2 sensor)

ed

up

ErA7

ErAA

ErAE

ErAD

Suction temperature abnorrnality (detected by

Refrigerant under-charge, gas leakage, over-loading operating condition

Pressure sensor abnormality

Defects of pressure sensor, wire cut, connectors off, pressure intake

stuff ed up

Low pressure gas leakage abnormal (Low pressure switch functioning)

Gas leakage, refrigerant (In cooling, simuitaneous cooling operation)

PMV(A

off, wire cut, PC board defects.)

SVS (A - D) in Defect of expansion valve, expansion valve stuifed up

(In heating, simultaneous heating operation)

4-way valve malf unction

SV14 malfunction (Defect of valve body, defects of coils, connectors

PC

SV16 malfunction

Cornpressor abnormatity (High pressure switch (63H2), Inner over-load relay

Over-load relay (51C2) in non-inverter compressor side functioning)

(t)

High pressure switch

Over-loading operating condition

(Defects of fan motors and capacitors, wire cut, conneclors off, PC boards' defects)

SV13 malfunction (cooling)

PMV2 malfunction (simultaneous cooling) (Defects ot valve body, defects

connectors

S

PMV (A

-

D)

in

board defects)

Indoor and outdoor fan motors malfunction

off,

V D ( A

-

D ) i n M

-

D)

in M/C malfunction

underchange

M/C

malfunction (Defect of valve body, defects of coils, connectors

M/C

malfunction

(63H2)

malfunction

PC

boards' defects)

/C malfunction (heating, simultaneous heating)

ThS

sensor)

capillary tube

off,

wire cut,

(49C2),

of

coils,

Check

ErAD

code

Judgrnent

(2) Inner over-load relay

(49C2) malfunction

Gas leakage, refrigerant under-charge, over-loading operating condition

(3)

Over-load relay

=

Over-loading operating condition, compressor liquid accurnulation, compressor

(51

C2) malfunction

locked up, rnis-phase, crank case heater defects (wire cut, connectors off)

Er21

Ero4

ErAF

Er17

ErAB

High pressure abnormality (High pressure switch

(63Hz), Inner over-load relay (49Ci),

malfunction, detected by pressure sensor)

=

High pressure switch

Judgrnent of ErAD

(63H

i

rnaifunction)

(1).

Sarne judgment as high pressure switch functioning.

Inner over-load relay (49C1) functioning

Gas leakage, refrigerant under charge, over-loading operating condition

Serial signal abnormality (between outdoor unit interface control board and inverter control board.)

Connectors off, wire cut. wrong wiring, bad contacts

Out of phase in power supply

Phase mis-matching ol power cable

Inverter (INV)

cuirent circuit abnormality

Inverter PC board malfunction

Inverter (INV) abnorrnality

(1)

Giant transistor abnormality (displays check code

"1

4" on remote controller)

Short voltage protection circuit functioning due to voltage reduction. Check the power supply, wiring, fuses, reactors off,

loose or cut.

Check the over-current protection circuit.

Defects

of

giant

transistor

base

drive, smoothing capacitors, current regulation

diodes,

inverter cornpressor grounding.

(2) Inverter compressor abnormality (displays check code

"l

d"

on remote controller) Short voltage protection circuit functioning due lo voltage reduction Check the power supply, power relay off, loose or cut Over-current protection circuit functioning. Compressor liquid accumulation, compressor locked up, mis-phase, crank case heater defects (wire cut, connectors off)

(3)

Break-down of inverter compressor (displays check code

"1

F"

on remote controller) Current increasing by voltage reduction (Check the power supply.) Current increasing by over-loading operation Wrong operation by malfunction of current detection circuit on inverter

(4)

High pressure abnorrnality (High pressure switch

(63Hi),

Inner over-load relay

PC

board.

(49Ci ) malfunction.)

High pressure switch (63H1) malfunction

Judgment of

ErAd

(1).

Sarne

judgment as high pressure switch functioning.

Inner over-load relay (49Ci) functioning

Gas leakage, refrigerant under-charge, over-loading operating condition.

Check

Multi-cantrokc

code

,E180

E280

Th

(A)

sensor

..

Judgment

abnorrnalily

E181 E28

1

E282 E183

E283

E284

E1

Ob

E20b

E1

88

E288

E1

89

E289

E18A E28A

Th

(B)

sensor abnorrnality

~h

(C)

sensor abnormality

Th

(D)

sensor abnorrnality

Th

(X)

sensor abnormality

Water level abnormality (Float switch functioning)

Drain heater defects (wire Float swilch defects (wire cul, connectors off)

Impossible discrimination of outdoor unit capacilies (Displayed when the outdoor unit

capacity was unknown.)

=

Defects of multi-controller control board

-

Defeds of interface board of outdoor unit

Wrong wiring, wire cut or bad connection between multi-controller and outdoor units

Over-capacity

Displayed when lotal capacity of each indoor unit exceeds

capacity

M/C

board abnormality

Displayed when the multi-controller contro1 board does not work normally.

Defects of SenSOiS, wire Cut, shon drcuit, mnnedors off

cui, connectors off)

1.35

tirnes of outdoor un2

20-44. If the Setector Switch

SW1

on

Outdoor Unit Interface Board

is

Set

at

"3"

Capacity rank setting is displayed. Following contents are indicateci by switching

Table

20-7

7

Display

Selector

sw2

O

1

3

4

5

8

Indication

Outdoor unit horse power

Room A

Capacity

-

indoor unil

connected to

MiC

Capacity rank indoorunit

connected lo

M/C

(l)

(2)

rank

of

~oom Room C

Room

RoornA

Room Roorn Roorn

B

D

i3

C

D

LD71

[91

[A]

[b] [CI

[d]

[Al

[b]

[C]

[d]

Segmented

LD72

8 HP [8],

Displays the code number of indoor unit

regislered

Code

No.

4

O

2

3

5

to

M/C

Capacity

rank

No

connection

-

130

160,200

260

LED Display

10

HP

[A]

Code

No.

6

7

8 9

10

the

display selecior

Capacity

rank

-

380

-

460

LD73

[H]

SW2.

LD74

[P]

20-4-5.

Sensor data is displayed. By switching the

Display

Selector

SW2

O

1

2

3

4

5

If

the Selector Switch

Indication

Pressure sensor data

ThD1

sensordata

ThD2

sensor data

ThS

sensor data

TE

sensor data

T0 sensor

data

SW1

on Outdoor Unit Interface Board is Set at "4"

SW2,

the contents are shown in table 20-8.

Table

20-8

7

Segmented

LED

Display

LD71

[p]

Idl [dl [SI [h1 [h]

LD72

[dl

['l [21

11

1

['l

[o]

LD73

Data

100

-

FO] See the conversion table (Table on pages

20-1 4,20-15

59.

and

LD74

20-1

6)

20-4-6.

PMV

sw2.

Display

Selector

If

the Selector Switch

opening inforrnation is displayed. Following contents

Indication

SW1

on

SW2

PMV1

PMV2

opening

2

3

Outdoor Unif Interface Soard

are

indicateci by switching the display selector

Tabie

20-9

7

LD71

[p]

Segrnented

LD72

[l

1

[*l

LED

Display

LD73

Data

[O0 - FO]

See the conversion table (Table

20-1 2)

68.

Cornpleteiy ciose Fully open [FO]

is

Set

on pages

at

"I"

LD74

1001

67

and

-

20-5.

The

contents below.

Malfunction Judgment with the Self-Diagnostic Function

of

the Multi-Controller

combination of the display switches

Display

(SW)

Fig.

and

four

20-5

Contro1 board

segments

7

segrnented

Display

LED

selector

(LDIO1

switches

-

LD104)

indicate

the

Switch Indlcation

Serial signal

O

condition

Frequency instruc-

2

tions

to

I

P-

3

5

6

Iwrong wiring

the out-

I

door

unit.

--.

-

~

Oil

retriwal

Superheat contro1

1

Dehostina displav

Operation mode Heating [H-]

I

IRe-start

timer

-

I

-

1

I

M/C operating

Cooling: [C-]

Imode:

)

-

I

-

I

[C]

I

[k]

*

Table

20-10-A

7

Seamented LED Dis~lav

0

B

Sending to

3

room

. . .

Room

B

When controlling su~erheat

I' I

Displays defrost

Simultaneous Cooling [hC], Stop [--l, Defrost [J-]

-

. .

.

For the contents of che& code, see page 62.

-

Ilj

-

[dFj

-

Outdoor

Receiving from room

C

heck code (Normal [00])

Frequency instruction of heating 100 See table 20-3 "Display code conversion table' on page

Room When oil retrieval

1

unit

operating mode: Heating [H-]. Cooling

-

Indicates the indoor units

(A,

b,

C,

d) to be checked.

Sending

ta

room A

RoomA When controlling sutterheat

1.

functioning

[-C]

Simultaneous Heating [Hc]

Receiving from room A

59.

Room When oil retrieval

A

Receiving from outdoors

-

I

11

IT~A

sensor data I [h] I (A]

12

IT~B

sensor data I [h] I [bl

13

IT~C

sensor

data

I

ThD sensor

14

ThX

15

*

and Simuttaneous CoolingIHeating [HC], Defrost

data

sensor data

Note:

For

7

segmented

Display Selector Swilch Setting

irl

Other than above

Note:

*l

If

the

display selector switch is set to

display, the

Method lo

Read

Indicates part lighting among seven filaments

Indication marks

at

the

Data: [O0 - FO] Opening Display in hexadecirnal

[h] [ [C] [h]

[d]

[h]

[H]

[J-]

way

to read the indication differs depending

Table

r,

"3",

W

D-1

Lo

B

,rii

,i

only the

7

mark

ltfl

U

A

17

I_r

l7

i

0123456789AbCdEF

Data:

See table 20-1 3 'ThA,

20-1

1

How to Indicate

B.

C, D and X sensor data" on page

on

the settings

of

display.

-

13

U

C

-

bb"Ey2b

of defrost

1-fl

?A'

D

I

"dF"

will

h3

L4

E

be

displayed.

I

L4

L!!

F

~bcr

P

T

69.

Lo

P,P

G

T

Switch

Serial signal cond~tion

1

Checkcode Frequency instruc-

tions to the out

2

door unit. Oil retrieval

Superheat

3

contro1

Defrosting display

Indication

W

o2

!LO

-

Check code (Norma1 [DO])

-

kr

U

Receiving from room

D

Frequency instruction of cooling [OD See table

Room

D

When oil retrieval

Table

20-1

0-A'

7

Segmented

07

.

El

Sending to

D

room

.

. .

. . .

20-3

'Code conversion table' on page

'Room

O

When controlling superheat

Displays defrost [dF] functioning

LED

Display

LD104

03

'DO

For the contents of check code. see page

-

03

iu

Sending

room

C

-

1

F]

Room

C

When controlling superheat

to

59.

Receiving

from

room C

Room

C

On

oil

retrieval

Sending outdoors

51

-

55.

to

Operation mode

4

Re-star1 timer

5

Wrong wiring

6

PMV(A) opening

7

PMV(B) opening

8

PMV(C)

9

PMV(D)

i0

ThA

11

Th8 sensor data

12

ThC

13

ThD

14

15

ThX sensor

opening opening

sensor

data

sensor

data

sensor data

data

Outdoor unit operating mode: Heating

Displays a part of wrong wiring [A] Wrong wiring in room A

[C] Wrong wiring in room

Data: 100 - FO] Opening Display in hexadecimal

Data: See table

20-13

Simultaneous Cooling IhC], Stop

Normal IO], Restart timer counting

C

"ThA,

B.

C. D and X sensor data" on page

[H-],

Cooling [-C] Simultaneous Heating [Hc]

[A.

b,

C, d]

[bl Wrong wiring

[d]

Wrong wiring in roorn

I

in

1

room

[--l,

B D

Defrost

69.

[J-I

20-6.

PMV

Opening

Degree, Temperature Sensor

and

Pressure

Sensor

20-6-1.

Data

PMV

PMV1,

PMV

00

(0)

FO

(240)

Code

Display

Conversion

Table

(Electronic Flow Control Valve) Opening Degree

(A),

(B),

(C),

(D)

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

2

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

opening

degree

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

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

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

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

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

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

Table

,

,,..,..

Multi-mntroller

Oudoo unit

O

lo

Fully

........

Fully open

20-1

2

Display

34 35 36

37 38 56

39

3A

38

240

pulses

closed

Opening

deg

(pulsel

ree

52

53

54

55

57 58 59

Data

3

C

3D

3E

3F

40

60

61

62

63

64

Table

20-13

Table

ThA,

20-1

B,

C,

4

Pressure

D

and X sensor

sensor

data

Note:

These

are

typical

samples. It

is

possible

to

display

the

middle

value code.

Table

20-15 ThD1,2

sensor

data

Tempera-

ture

(OC)

130.000

135.000

140.000

Note:

These afe the typical sarnples. It is possible to display middle value code. Displays

"00"

when a connector

Table

is

disconnected

20-16

ThC.

TE.

or

T0

a

wire

sensor

is

cut

in

data

the sensor.

Tempera-

Note:

There are the typical samples. It is possible lo display middle value code.

Displays

"00"

when a connector is disconnected or a wire is cut

in

Ihe sensor.

21-1.

Microprocessor

the

Remote controller

I I I I

I

l

I

A

few

Malfunction

Indoor unit

l

I

l 1 I I I

I

I I

I

sec.

I I

System

-

1

min

Diagram

Multicontroller

(M/C

2)

I I I I I I I I

l

l l

I I I I

I I

l I I

I I I I I

I I I

I I

I

I l

I I

Fig.

21-1

and the

--

1

min.

Time Required

-

Interface Inverter

microprocessor microprocessor

to

IIF

I

I I I

I I I I I I

I

I I

I

l

i

l

min.

I I I

1

I

I I

I

I I I I I

I

I I

I I I

Judge

The

tirne

to

display the indication on the remote controller.

Seria1 signal abnormalities:

(1)

Between the

a

(2)

M/C

a

(3)

Indoor

a

(4)

The

few seconds + one minute + one minute + one minute

and

few

few seconds + one minute

remote

IIF

and the INV

the

I/F

seconds + one minute + one minute

unit

and the

MIC

contro1 and indoor units

a few seconds

INV

abnormalities:

a little more than three minutes

IIF

abnormalities:

a

little more than two minutes

M/C

and indoor

unit

microprocessor abnormalities:

a little more than one rninutes

=

more

=

than

one minute

=

more than three minutes

more than two minutes

21-2.

A

Check

of

the

Control

Multi-Controller Control Board

There are

Measure lhe voltage between the When there is no voltage, take off voltage. When approximately transformer defects.

two

types of contro1 circuit power voltages,

5V:

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

12V:

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

18

Circuit Power Voltage of the

5V

and

GND

and the checkpoints shown in Fig.

PJ16

(in condition without loading), measure the transformer

-

20V

AC

(at

240V)

is detected, the relay

12V.

(Cornrnon Electronic circuit power Relay drive circuit, power

GND).

21-2.

board

is

defective, otherwise,

for

the

PMV

secondai-y

21-3.

A

Check

of

the Control

Interface Board

There

are

two

types

of

contro1 circuit power voltages,

5V:

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

12V:

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

Measure the voltage between the When there is no voltage, take off voltage. When approximately transformer defects.

18

Circuit

GND

and the checkpoints shown in Fig.

PJ8

(in condition without ioading), rneasure the transformer secondary

-

20V

AC

(at

240V)

Power

5V

and

is detected, the relay board is defective, othetwise,

Voltage

12V.

(Common

Electronic circuit power

e

drive circuit, power for the

of

the Outdoor

GND).

21-3.

PMV

Fig.

-

73

21-3

-

-4.220 - 240V

Multi-Controller

r'-'----------------------------------------

System

Diagram

l

I

l

X

-

a

%

B

a

-

C

ò

v

C

Fig.

21-4

Multi-controller

-74-

Power

3

phase

supply

380-415v

50Hz

A/C

220-240V

A/C

220-240V

TRIAC

72

Fig.

21-5

-75-

Outdoor

unit

22.REMOTE

CONTROLLER DISCRIMINATION FUNCTION,

OUTDOOR UNIT DISCRIMINATION FUNCTION

For each of one outdoor

To search for connected outdoor unit

T

o

search for connected remote controllers from the outdoor unit.

unit

system, it

is

possible;

from

the remote controtler.

22-1.

22-2.

Search

I

Remove

l

I

Select timer.

I

(Short circuit

The

unit, striking seconds, opens

5

minutesl.

Stop

Search

Set the display select rotary switch No.

on the interface board in outdoor unit to

"3".

"5"

or

l

Press the push switch

for more than

"7".

from

Turn on the power.

the

(or tum over the remote oontroller)

"Fa".

2

way

valve for

with

shorting

(Remove

from

Turn on the power.

two

seconds.

the

remote controller cover

mode. and shoit cicuit the

the

timer by a short pin.)

the

bypass of outdoor

a

grinding noise every

and

closes repeatedly (for

the

remote contro1 timer.

the

timer short pin.)

Outdoor

SW3

ori lhe board

Remote

2

Unit

I

1

*2

I

Controller

I

1

Procedures

I

*lI

I

1

Check

the connecled

outdoor unit.

l

1

Procedures

I

t1

:

Figure

olcover

oli.

~Shorl~

Fix

shori-pin wilh

*2

Depending judgemenl on the remote cwitrol the followhg division.

Parts location

on

ihe selting oi

In

the case o1

In Vie

In the case of '7': Multi-controller MIC

(The

'3':

of

'5':

All systems Multi-controller

case

lay-oul diagrarn on

/

an

acihesive

3'.

'5

and

'T,

can

be

M/C

(1)

(2)

the

interface

7

segrnented LED

lape

the

done in

system system

board)

,

Dispiay

The remote controller's "PREHEATING"

"DEFROSTING"

blinking.

Set the display select

1

Na

l

b

indication will

"O".

starl

rolary switch

,

I

Check the connected remote

I

controllers

I

End

Push switch

SW3

23.CHECK

CONNECTION

The

units have a function multi-controller and the cases

Cases:

listed below.

1.

The capacity of indoor units setto multi-controller contro1 board.)

2.

Remote

3.

Out of phase.

FOR REFRIGERANT PIPING AND INTER-UNIT WIRING

to

check

the

wrong connection

indoor units. Conduct the check at the test

''O".

controller of indoor unit dici not set to "cooling" (Select "cooling")

in

inter-unit wiring, or wrong connection (Connect the wire to correct termina1

of

refrigerant piping and inter-unit wiring between

run

as

follows. This function does not work in

(Select the correct capacity with the switches on the

23-1.

Check

System

Turn

Procedures

the

C

Open the electrical parts

3

Frequency setting

Set up the operaiion Irequencies. Depending on the

I

ternperatures. sei the rotary switch (display switch) on the intedace (IIF) board in the outdoor unir to either

room and arnbient

il

4

Set

up

the

operation

5

Start the check

6

End

of

check

7

Judgernent I Check. a wrona wirina or not. In the case

8

Reset

Note: When there

turning off ihe power and perform a check again.

units wnnected to the outdoor unit to cooling operation, and press button. (No need for temperature setting)

Press the push (Mcre than iwo seconds) (Eighr unii will simultaneously start to btink.) (SFrt to check with indoor unit A and carry on in iurn. Durino che check. al1 of the 'rndoortiniG 'semire controll~rs display

"PREHMT'.

indoor unit fan keeps to stop operation.)

SW

LED5

on the I/F board in outdoor

"DEFROST

f

thc

Atrer cornpletion of the operation larnp on ihe remote wniroller gws off. As br ihe outdoor unit, operation and on the

of wrong wirinc 7 segrnented indicare the defective indoor unit. You can also use 7 segmented controller for this check. minutes for the check. But il varies depend. ing on room and arnbient air ternperature.

l

I

When ihe check is cornpleted, rnake sure io return ihe rotaq

.,n,,

U.

(Il it is not returned io nection check will finish as it be ooeraton.l

afe

rhe compressor sfops the

the seven segrnented LEDs

VF

board also stop blinkina.

t

SW

poscible io do rile cooling or the healing

some wrong connecrions, repair ihem after

power on.

box

"9"

or

'10'.

ttie operation

No.3 on the IiF board

blinking, and lhe

LEDs

on

the

takes max.

the wrong

S.

and il won'i

rnulti-

10

con-

li

on the IiF board to

"O",

1

I

(The lay-oul diagram lorthe switch on the inledace board)

(Standard lor the check operation trequency se1ection.J

Y

21

5

(7

segmented LED indication on the

(Examp4e) If there is no wrong oonnection in system, When there are wrong

f'

and

seconds. (The

the multi-motniiier

(Exarnple) When there are wrong conneciions in unii C and displayed every iwo secunds.

If

ihere are wrang conneaiofls in al1 of the unii

C

and

.

7.T

is displayed.

"&

will

be

two

digit, 7 segmented

7segmenied

+7

D.

'T'

D,

al1 Ihe syrnbols

L-.-

mnneaions in unii C and

aliernately displayed every

ima.1

LED

and

"'d

are

I

LED

WhenLe prebsus

IO

bw

~srpsiiunta

ii==arr

iteemipsrrr

by

pmeaivc

ard

BuiLEDn

tdnhkqngatir.

UF

display on

iidmrnd

ga.

d-ihirdmiq,

[hs

Eh&

wiUmmtlo

YFboidanlnia

baard.)

L-

D~wiOlqr

!h

M/C

IWO

ldl

orMm

dr-harge

mi

vll

~wm

bs

.

uni

*h

(l)

D,

+

wili

ba

alternaieiy

A,

dispiayed evey huo seconds.

8,

&m

mpped

h

d

ihì.

24.REMOVAL

METHOD

24-1.

24-1-1.

Danger:

(1)

Outdoor

Unit (MAR-F81

Replacement and Checking Procedures

The electrolytic capacitors in the electrical parts assembly are charged to servicing, turn off the power supply and allow at least

a

safe level of 5 volts

to

Test with a D.C.

Never short the capacitor terminals with

equipment damage may result.

Remove the front panel (left side).

HTM8,

D.C.

or less to avoid possible hazard.

volt meter as shown below.

(M6

x

4,

M4 x 1)

Fig.

F1

24-1

any

O1

HTM8)

of

the

Electrical

20

minutes for the capacitors discharging

rnetal implement for djscharging. Persona1 injury

Parts

600

volts

D.C.

Before

or

(2)

Remove the inverler cover.

24-1-2.

(1)

(2)

(3)

Replacement Procedures

Remove the fan guard.

Loosen the tightening screws of the propeller upward.

After removing the fan motor lead connector inside the inverler assembly, remove the fan motor frorn ventilation uni1 base.

(M4 x 2,

(M6

x

(M4 x 4)

2

4.

2

locations)

of

the

locations)

Propeller

fan

with a hexagonal wrench and remove the propeller fan

Fan

and Fan Motor

the

24-1-3.

(l)

(2)

(3)

(4)

(5)

Replacement Procedures

Remove the front panels (left and right sides). Purge the refrigerant. Remove the inverter cooling duct. Remove the strut (front). (M6 Remove the upper cover

of

(M6

x

9,

M4

x

the inverter unit.

of

the

compressor unit

(M6 x 4,

x

2)

1)

cover

-

2

locations, M4 x

1)

Fig.

24-2

(6)

Remove the fixing screws of

the

inverter assembly.

(M4

(7) Remove al1 the connectors of 2-way valve coi1 lead and

(8)

Remove the inverter assembly to the front.

(9)

Rernove the noise reduction box

(10)

Remove

the noise reduction box

(A).

(6).

(M4 x 7)

(M4

x

4)

\

Noise

reduction

box

(A)

x

etc.

Crank

2)

inside the inverler assembly.

Noise

reduction

case

heater

box

18)

Fig.

24-3

(1

l) Remove the noise reduction materia1 and crank case heater.

(12)Remove the discharge temperature sensors

(2

locations on left and righl side) mounting on the discharge

pipe and remove the discharge pipe from the compressor.

(13)Remove the suclion temperature sensor

(2

pipe from the cornpressor.

(14) Remove the equalizer pipe

localions)

on

the suction pipe.

(1

location) mounting on the suction pipe and remove the suction

Fig.

(1

5)

Loosen the cornpressor fixing nuts (M1

0 x 3)

and remove them. (M1

24-4

\

Remove

(Discharge

at

0 x 3)

2

locations.

pipe)

.-

(l

6)

Rernove

(1

7)

lnseil a rectangular lumber or etc. (as carrying guides.) under the bottom of the compressor leaning the

the

connection lead wires on the compressor and termina1 sections.

compressor.

(1

8)

Move forward Ihe compressor rolling lefl and right

(19)

Replace the compressor.

by

using

the

hooks for hanging.

(20)After replacing the compressor, perform the procedures in reverse order of removal.

Hook

for

I

hanging

Fig.

24-5

\

Lumkr

24-1-4.

(1)

(2)

(3)

(4)

(5)

(6)

Replacement Procedures

Rernove the front panel (lefl and right side). (M6 Purge the refrigerant. Remove lhe inverter assembly fotward according to the procedures described in Remove Remove the accurnulator fixing screw. (M6 x 1)

Replace the accumulator.

the

pipes connected to the accumulator.

of

the Accumulator

x

4,

2

locations, M4 x 1)

itern

24-1

-3.

24-1-5. Replacement Procedures

(1) Rernove the front panel (left and righl side). (M6 x

(2)

Purge the refrigerant.

(3)

Remove the pipe connecled to the liquid tank.

(4)

Rernove

(5)

Replace the liquid tank.

the

liquid tank fixing screws. (M6

24-1-6. Replwement Procedures

(1) Rernove the front panel (left

(2)

Purge the refrigerant

(3)

Pull the replacing~ouldoor unit out frorn the coupled outdoor units.

(4)

Remove the fronl panel (right), the exhaust

ventilation assertibly.

the

(5)

Replace the heat exchangers (upper right, lower right, upper left, lower lefl). (M4

and

of

the Liquid

x

2)

of

the Heat Exchanger

right side). (M6 x

air

cabinet, the side plate (right and lefi), the strut (back), and

4,

2

4,

M4 x 1)

Tank

locations,

M4

x

l)

x

8,

2

locations)

Discharge

air

cabinet

+

Propeller

fan

v

"

Fig.

24-6

24-2.

Multi-Controller

(RBM-Y1031

FE,

Y1041

FE)

24-2-1. Replacement

(1)

Rernove the electrical parts box cover.

24-2-2. Checking Procedures

(1)

Remove the electrical parts box cover.

(2)

Remove the electrical

cover frorn the unit holding the electrical parts upward.

(3)

Hook the removed electrical

(4)

Remove the unit cover.

Note:

When the electrical parts box is rernoved, remove the

temperature sensor (Th

SVD

(A

performing itern

and

parts

box cover mounting screws

parts

(M4

x

-

D) connectors,

(l),

Checking Procedures

of

the

Refrigerant Cycle

box on the base

4)

A

-

D,

ThX) connectors

SVS

(A

-

D) connectors,

and then perform itern

of

the

Electrical

Parts

(M4 x 2)

of

Ihe unit and fix it. (Refer to Fig.

(2)

and remove the electrical parts box.

and rernove the electrical parts box

PMV

A

-

D

connectors

(PJ1 - PJ5),

SVSS,

the heater connector

SVDD,

SVH

connectors after

24-8)

(PJ6 - PJ9),

(PJ14)

the

and

A

Fig.

24-7

r

Electrical

parts

cover

k~lectrical

Hook

on

the

Fig.

pms

base

24-8

of

box

the

unit.

24-2-3.

(1)

(2)

(3)

Note:

Replacement Procedures

of

the Refrigerant Cycle Parts

Purge the refrigerant frorn the outdoor unit. Rernove the refrigerant pipes and the inter-unit wiring connections. Bring down the mulli-controller frorn the ceiling.

1.

Replacernent of the refrigerant cycle parts should be perlormed with the multi-controller broughi

down from the ceiling.

2.

Replacernent of

PMV,

the expansion valve, the check valve, the magnetic valve should

periomied while cooling the valve main body by wet clothes.

3.

For locations of the parts, please see the

parts

Heat

lists.

insulatar for

pipes - foamed

polyethylene

(with heat-proof adhesive)

be

Heat

insulalor

Fig.

-84-

24-9

24-2-4. Replacement Procedures of the Heater

(1)

Remove the leaf plate.

(2)

Remove the heater connector

(3)

Insert the connecior of the new heater into

1.

Note:

Before attaching a new heater, completely clean residua1 adhesive on the bottom plate.

2.

Glue the new heater so that

exit

side without caiching the heater leads.

(M4

x

6)

PJ14

(on the

PC

PJ14

it

does exceed

board) and replace the healer.

on the

the

PC

board and mount the leaf plate.

heat insulators and leaf plate and clamp at the

24-26. Replacement Procedures of the

(1)

Rernove

(2)

Peel ofl the pipe heat insulators to be replaced with a knife or etc.

(3)

Remove an adhesive seal of the new pipe heat insulator and attach the insulators surely on the pipe

without slipping off.

24-2-6. Replacernent Procedures

(l)

Loosen the screws of the float

(2)

Remove the float switch mnnector

(3)

Replace the floal switch and rnount it according io the reverse order

the

unit cover.

(M4

x

4)

switch

of

and remove the float switch from the bottom plate.

PJIO

the

(on the

Pipe

Heat lnsulators

Float

PC

Switch

board).

(2)

-

(1).

25.EXPLODED

VIEWS

AND

PARTS

LIST

25-1.

Outdoor Units

(MAR-F81

HTM8,MAR-FIO1

HTM8)

Loca-

tion

No.

1

2

3

4

5

6

9

10 11 12

13

14.

14

15

16

17

l7

18

19

Part

No.

430461 51 43046255 43047491 43047527 43048009 43107200 43119391 431 19392 43120170 43121545 43141 603

431 41 702

43143572

43143557

4314573

431 43558

43143574

431 43559

431 43575

431 43560

43143576

43143562

43145066

Description

2-Way Valve

Solenoid Coil, 4-Way Valve

Capillary Tube l .5 Diameter

Capillary Tube 2.0 Diameter

Fusible Plug

Spring, Base

Fin Guard

Fan Guard

Propeller Fan

Fan Motor, STF-200-150C

Compressor, HV990CW-Y12

(MAR-F81 HTM8)

Compressor, HV1200CW-Y 12

(MAR-F1 O1 HTM8) Condenser, Right-Lower (MAR-F81

HTM8)

Compressor, Right-Lower

(MAR-Fl

O1 HTM8) Condenser, Right-Upper (MAR-F81 HTM8) Condenser, Right-Upper

(MAR-F1 O1 HTM8) Condenser, Left-Lower (MAR-F81 HTM8) Condenser, Left-Lower (MAR-F1 01 HTM8) Condenser, Left-Upper (MAR-F81 HTM8) Condenser, Left-Upper (MAR-F 1 O1 HTM8) Condenser, Sub (MAR-F81 HTM) Condenser, Sub (MAR-F1 O1 HTMB)

Dryer

Loca-

tion

20 21 22 23 24 25 26 27 28 29 30 31

31

32

33

34 35

36

37 37 38 38 39 40 41 42 43 44 46 47 48 50 51

No.

43146252 431 46283 431 46351 43146367 43146397 43146398 43146506 43146404 431 46503 431 46428 431 46443 431 46427

431 46444

43146446 43146504 431 46458 43147529 43147537 43148123 43148120 43148122 43148121 43151229 43151230 43157254 43195185 431 95186 43195198 44246235 44246236 43155136 43188856 43188859

Part

No.

Description

Check Valve Check Valve Service Valve Switch, High Pressure

Pulse Motor Valve Valve Body Solenoid Coil

Pulse Motor Valve

Packed Valve (5/8") Check Valve Solenoid Coil

Expansion Valve

(MAR-F8i HTM8)

Expansion Valve

(MAR-F1 O1 HTM8) 4-Way Valve

Packed Valve

(314") Sensor, Pressure Strainer Strainer Liquid Tank (MAR-FS1 HTM8) Liquid Tank (MAR-FI OiHTM8)

Accumulator (MAR-F81 HTM8) Accumulator (MAR-FIO1 HTM8)

Switch, High Pressure Switch, Low Pressure Heater, Crank Case Cushion, Under, Compressor Cushion, Upper, Compressor Spacer Capillary Tube 0.8 Diameter Capillary Tube

1

.O

Reactor

Owner's

Manual

Manual, Trial Run and Service

7

Diarneter

25-2.

Electrical Parts

Assem

bly

(MAR-F81 HTM8, MAR-F1 O1 HTM8)

Location

No.

101 102

103

104 105 106

107

108

109

11 0

11 1

1 12

113

114

5

11 116

11 7 118 119

120

121

122 123

Pari

No.

431 31 031 431 69622 431 50214

4316961 7 431 6961 431 6961 431 60438 431 60450 43160447 431 60448 431 69624 431 69623 43154156 43155135 431 581 27 43155134 43060750 431 60449 431 60426 431 69625 431 60451 43160452 431 4231 2

9

3

Description

G-Transistor, MG50Q6ES< 1

Rectif ier, 30U6P42

TRS-Thermostat , TRC

TR-100310SPT3A Noise FiIter, DC Diode Clipper Assembly Fan Motor

Terrninal Termina!, Termina!, Terminal, 6P

PC Board, MCC-1252, Gate PC Board, MCC-1251, Relay, LY-1 Noise Filter

Transformer FT57 Capacitor, MF Terminai Block, Terminal, Termina1 Block, 3P

PC Board, MCC-1253, Surge Holder, Fuse Fuse Magnetic Contactor (MAR-F81

3P

(LI, L2)

6P

F

3P

(N)

HTM8)

Control

3P

(RST)

Location

No.

123

124 125 126 127 128 129 130

131 132 133 134 135 136

137 138 139

*

140 141 142 143

Pari

No.

43152356

43160453 43460526 43060859 431 69618 43169620 431 6961 6

431 54148

43150172 431 501 73 431501 71

43150176 43150175

431 69628

431 52334

431 581 29 431 6961 2 431 69621

431 69614

431 69615

43055392

Descript

Magnetic Contactor (MAR-F1 O1 HTM8) Fuse Fuse Fuse Block Noise Fiher Ferrite Core Noise Filter,

Return Lock STR-4AB TC Sensor TC Sensor TC Sensor

Sensor

PC

Board, MCC-1223,

Interface

Magnetic Contactor Transforrner FT13-2

Starter

Capacitor, LNTZG222KSMCTF

SEM Resistor

Hole-CT

Surge Absorber

ion

AC

*

Note:

Replace both two capacitors at a time

25-3.

SVS Cooling

SVD Heating

SVH THX

SVSS SVDD

SVH

SVD

SVS

Détendeur

PMV Pulse Motor Valve

PMV

Multi-Controller

(RBM-Y1031

FE,

RBM-Y1041

FE)

Location

No.

1

2

3

4

5

6

7

8

9 10 11 12 13 14 18

No.

43019604 43146443 43046151 430461 43046269 43046270 43047527 43060229 431 46283 43146398 43146506 4314M29

431

43151231 431 57252

56

46505

Description

Holder, Sensor Solenoid Coil 2-Way Valve

SVSS SVDD

SVH

Check Valve Pulse Motor Valve 2-Way Valve Capillary Tube

l

Fuse,

A

2.0

C heck Valve Valve Body

SVD

Solenoid Coil Expansion Valve 2-Way Valve

svs

Float Switch Panel Heater

(RBM-Y

PMV

Diameter

Détendeur

1041

FE)

Location

No.

19

-

21

22

23 24

25

27

28

30 31 32

Part

No.

43157253 43179086 43189026 43189027 43189028

43189029

43189031

431 89032

431971 41 44246235 44246236

Description

Panel Heater

(R8M-Y1031

Cap

Insulator, Liquid-A Insulator,

Liquid-6

Insulator, Header-A

(RBM-Y 1041 FE)

Insulator, Header-A

(RBM-Y 1031

FE)

Insulator, Header-B

(RBM-Y 1041 FE)

Insulator, Header-B

(RBM-Y1031 FE)

Decoration Capillary Tube Capillary Tube

Bolt

0.8

1

.O

FE)

Diamer Diameter

25-4. Electrical

Parts Assembly

1

O1

\

(RBM-Y1041

108

I

FE,

RBM-Y1031

FE)

Locat

No.

101 102 103 104 105 106 107

108

ion

Part

431 581 431 69627 43150162 43150163 43150164

43150165 43150166 43151 195

No.

Transformer FT56

28

PC

Board Sensor Sensor Sensor

Sensor

Switch,

Description

Assembly

(RBM-Yl041

Micro

FE)

Location

No.

109 1 10

1 10

1 11 1 12

Part

No.

43060750

43160398

431 60399

431 60397 43060776

Descript ion

Terrninal Block, 3P

Terminal

(RBM-Y1041

Terrninal Block,

(RBM-Y1031 Terrninal Block, Terminal

Block,

FE)

6P

3P

6P

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page

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is

not

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printed.

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Toshiba MAR-F101HTM8-PE, MAR-F81HTM8-PE SERVICE MANUAL

Specifications and Main Features

Frequently Asked Questions

User Manual