Toshiba MAR-F102HTM8-PE, MAR-M102HTM8-PE SERVICE MANUAL

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SERVICE MANUAL

AIR-CONDITIONER

2-PIPE SUPER MULTI, HEAT PUMP

FILE NO. A90-9819

Outdoor Unit

Multi Controller

3-PIPE SUPER MULTI, HEAT PUMP WITH

SIMULTANEOUS HEATING AND COOLING

Outdoor Unit Multi Controller

MAR-M102HTM8-PE RBM-Y1032-PE (3-way) RBM-Y1042-PE (4-way)

MAR-F102HTM8-PE RBM-Y1032F-PE (3-way) RBM-Y1042F-PE (4-way)

Printed in UK March 1998 s

CONTENTS

1. SUPER MULTI SYSTEM BASIC COMPONENTS.....................................................................................

2. OUTLINE OF CONTROL SYSTEM............................................................................................................

3. SPECIFICATIONS......................................................................................................................................

4. CONSTRUCTION VIEWS..........................................................................................................................

5. WIRING DIAGRAMS..................................................................................................................................

6. REFRIGERANT CYCLE DIAGRAMS................................................................................................... .....

7. SELF DIAGNOSTIC DISPLAY INFORMATION........................................................................................

8. FAULT CODE DISPLAY INFORMATION..................................................................................................

9. CONTROL FEATURES.............................................................................................................................

10. VALVE & SENSOR FUNCTION AND OPERATION............................ ....................................................

11. PRESSURE TEST AND DEHYDRATION.................................................................................................

12. ADDITIONAL REFRIGERANT...................................................................................................................

13. EXPLODED VIEWS AND SERVICE PARTS LIST....................................................................................

SUMMARY

〈 The units referred to within this manual conform with the protection requirements of Directives 89/336/EEC

Electromagnetic Compatibility and 73/23/EEC Low voltage.

〈 Operating conditions of the unit are as follows:

Outdoor temperature -5 ~ 43°C Cooling

-10 ~ 21°C Heating

Room Temperature 18 ~ 32°C Cooling

15 ~ 29°C Heating

Room humidity < 80% Cooling

Note 1: Cooling capacity is rated at the following temperature conditions:

Indoor air inlet temperature 27°C DB, 19°C WB. Outdoor air inlet temperature 35°C DB.

Note 2: Heating capacity is rated at the following temperature conditions:

Indoor air inlet temperature 20°C DB. Outdoor air inlet temperature 7°C DB, 6°C WB.

Note 3: For details on the Outdoor unit installation, the Indoor units or Remote Controllers refer to

the relevant literature. i.e. Installation instructions supplied with the units or Service manuals relevant to the indoor units.

Note 4: Operatives handling refrigerants must be suitably qualified in accordance with local and

national codes of practice and statutory requirements.

Note 5: Legislation may regulate the removal of waste refrigerant from the systems. We advise

awareness of any regulations and duty of care. Waste refrigerant must NEVER be discharged to atmosphere.

Note 6: Electrical work should be in accordance with all relevant codes of practice and should be

carried out by suitably qualified personnel.

Note 7: Metric / Imperial pipe conversion.

Diameter (mm) 6.4 9.5 12.7 15.9 19.0 22.0 28.6 Nominal diameter (inch) 1/4 3/8 1/2 5/8 3/4 7/8 1 1/8

Note 8: Within this manual, O/D = Outdoor unit, M/C = Multi controller, I/D = Indoor unit, R/C = Remote

controller, D.O.L. = Direct on-line compressor.

1. SUPER MULTI SYSTEM BASIC COMPONENTS

1.1 2-Pipe Heat Pump.

This system allows separate operation of each indoor unit in heating or cooling.

Heating operation has priority over cooling. In the event of an indoor unit requesting cooling operation when another is in heating mode, the "PREHEAT DEFROST" will flash on the remote controller.

2-Pipe Outdoor unit

T-Pieces

2 pipes

Multi controller

OFF

Indoor units

OFF

Remote controller

2 pipes

1.2 3-Pipe Heat Pump with simultaneous heating and cooling.

This system allows separate operation of each indoor unit in either heating or cooling simultaneously.

3 pipes

3-Pipe Outdoor unit

T-Pieces

Multi controller

Indoor unit remote controller requesting cooling

Cooling operation

Indoor unit remote controller requesting heating

Heating operation

Indoor units

Remote controller

2 pipes

2. OUTLINE OF CONTROL SYSTEM

The refrigerant and electrical systems of the Super multi air conditioner are controllled by the Multi controller and the Outdoor unit microprocessors.

All RAV Heat Pump series Indoor units are compatible with the Super multi system. i.e. 1 ~ 5 HP.

For system operation, initially the microprocessor in each Indoor unit calculates the difference between the current room temperature (TA) and the requested temperature which has been set on the Remote controller. A demand signal is determined and transmitted to the Multi controller microprocessor in the form of operation commands. (i.e. ON / OFF, cooling or heating operation mode, operation demand frequency).

The Multi controller microprocessor receives operation commands from all Indoor units connected, calculates the accumulative operation command and transmits this information to the Outdoor unit Interface microprocessor.

The Interface microprocessor calculates the capacity required for heating or cooling and determines the operation mode of the Outdoor unit and the actual frequency of the compressor.

2.1 Control system diagram.

Indoor unit 1 – A

Fan

Temp. sensor (TA)

Drain Pump

Indoor unit microprocessor

Remote

controller

1 - B

1 - C

1 - D

Multi controller 1

Capacity rank setting switch

Temp. sensor

Pulse modulating

valve

Multi controller

microprocessor

Display LED

2-way valve

(3-Pipe ONLY)

Outdoor unit

Protection unit

Comp. sensor

Temp. sensor

Pulse modulating

valve

Interface microprocessor

D.O.L.

compressor

Display LED

2-way valve

Fan

2 - A

2 - B

2 - C

2 - D

Multi controller 2

Multi controller

microprocessor

4-way valve

Inverter

microprocessor

Protection

unit

Inverter

compressor

Inverter

Power supply

2.2 Combination of Multi Controllers and Indoor Units.

Each Indoor unit is allocated a code number according to its capacity rank. Refer to the table below.

Capacity Rank of Indoor unit

No connection

Example: Indoor unit model RAV-362UH-PE, Capacity Rank = 36, Code No. = 8.

(Each Indoor unit Code No. is registered by the capacity rank setting switches on the Multi controller control board).

Multiple Indoor units may be connected to each Outdoor unit, providing the total Indoor code does not exceed the limits shown below.

Outdoor Unit

Code No.

Maximum No. of

Connected Units

Minimum Code No. Maximum Code No.

10HP 2-PIPE (MAR-M102HTM8-PE)

10HP 3-PIPE (MAR-F102HTM8-PE)

The option is available to use a 3-Way Multi controller (for 3 Indoor units), or a 4-Way Multi controller (for 4 Indoor units). If more than 4 Indoor units are required for an Outdoor unit, 2 multi controllers should be used with T-Piece connections.

Note: It is possible to connect indoor units with a total capacity exceeding the capacity of the outdoor unit

by a maximum of 35%.

2728

3.1 Specification of Outdoor unit.

3. SPECIFICATIONS

Model Name

Cooling capacity (kW)

Heating capacity (kW)

Power supply

Operating current (A)

Power consumption (W)

Cooling

Power factor (%)

Operating current (A)

Power consumption (W)

Heating

Power factor (%)

Starting current (A)

Starting method

Dimensions (H x W x D) (mm)

Net weight (kg)

Colour

Compressor

Type

Motor output (kW)

MAR-M102HTM8-PE

25.0 (28.0)

28.0 (31.5)

380 – 415V, 3-phase, 50Hz

15.7 (17.2)

10,600 (11,500)

17.7 (15.5)

11,800 (10,500)

1,530 x 1,290 x 834

356

To be confirmed

Hermetically sealed (Twin scroll)

MAR-F102HTM8-PE

97 (97)

96 (98)

Direct

370

7.5

Fan

Fan assembly

Refrigerant (charged weight) (kg)

Liquid (mm)

Discharge gas (mm)

Suction gas (mm)

Coupler style

Max. equivalent piping length (m)

Max. actual piping length (m)

Max. piping head (m)

Motor output (kW)

Air flow volume (m3/hr)

Liquid Discharge gas Suction gas

Propeller fan

0.15 x 2

10,000

R-22 (18.6)

ø15.9

- ø19.0

ø28.6

Flare connection

Brazing connection

120

100

50: When the outdoor unit is installed above.

20: When the outdoor unit is installed below.

R-22 (21.6)

Flare connection

Crank case heater (W)

The specification shown in ( ) denotes operation with the maximum capacity of indoor units connected

(i.e. 135% capacity of the outdoor unit).

Specifications are subject to change without notice.

3.2 Specifications of Outdoor unit Refrigerant Cycle Parts

Compressor motor

Fan motor

Model Name

Model name

Motor type

Power supply

Output (kW)

Pole (P)

Coil resistance (Ω)

Compressor oil name

Amount of oil (cc)

Model name

Motor type

Power supply

Output (W)

Supply current (A)

Pole (P)

MAR-M102HTM8-PE MAR-F102HTM8-PE

HV1201CW-Y12

3-phase induction motor

380 – 415V, 3-phase, 50Hz

7.5

2/2 (Inverter side/Non-inverter side)

1.49/2.51

(Inverter side/Non-inverter side)

SUNISO 3GSD

7,000

STF-200-150C

1-phase, induction motor

220 – 240V, 1-phase, 50Hz

150

1.12 ~ 1.44

Inner over-load relay

High pressure switch Low pressure switch

4-way valve

Compressor case heater

Pressure sensor

Discharge temperature sensor

Suction temperature sensor

Outdoor air temperature sensor

Pulse modulating valve (For bypass)

Pulse modulating valve

2-way valve

Model name

Operating pressure (kgf/cm2G)

Model name

Operating pressure (kgf/cm2G)

OFF: 115 ± 5°C

20PS-B (Inverter side), 20PS-G (Non-inverter side)

Operation 30, Reset 23

20PS-1

Operation 0.25, Reset 1.5

CHV-0712, Coil AC240V

AC 240V, 74W

Model name: NTP-Q250TF-2

Input voltage: DC 12V

Output voltage: DC 0.5 – 4.5V

At 25°C = 50kΩ, 50°C = 17.9kΩ, 100°C =3.35kΩ

At 0°C = 32.8kΩ, 25°C = 10kΩ, 50°C = 3.6kΩ At 0°C = 32.8kΩ, 25°C = 10kΩ, 50°C = 3.6kΩ

NEV202DXF, Coil AC 240V

EV18RC2, Coil DC 12V

EV23RC8, Coil DC 12V

RP100-03, Coil AC 240V

Specifications are subject to change without notice.

3.3 Specifications of Outdoor unit Inverter Assembly Parts.

Model Name MAR-M102HTM8-PE MAR-F102HTM8-PE

Power supply

Output voltage at operating frequency of 60Hz

IGBT

Relay

Fan motor running capacitor

Diode

AC noise filter

DC noise filter

Power supply rectifier capacitor

Fuse

Electronic starter

Reactor

Fan motor relay

Control relay

Magnetic contactor for compressor (Inverter side)

Magnetic contactor for compressor

(Non-inverter side)

380 – 415V, 3-phase, 50Hz

AC 266V

MG50Q6ES11

LY1F (AC 240V)

EAG45M605UF1, 6µF450V

SR130G-160

ZSG2208-02, 8A, 250V

LF215AV, 15A, 716V

LNT2G222KSMCTF, 2200µF/400V

20A

912X25E101YV20

CH-26-T, 6.2mH, 18A

G2R217PV

G4U-112P

13A

15A

Transformer (Inverter)

Transformer (Interface)

Power supply terminal plate

PC board (Inverter)

PC board assembly (Interface)

PC board (Gate)

Cooling fan

Specifications are subject to change without notice.

FT70

FT69

AC600V, 60A

MCC-1251 (INV-M-E) MCC-1251 (INV-F-E)

MCC-1211

MCC-1252

MCC-1223

3650EXV-5, 220-240V

3.4 Specification of 2-Pipe Multi Controller Parts.

Model Name

Pulse modulating valve

Temperature sensor

Float switch

Model name

Power supply transformer

Specification

Relay (PC board)

Heater

Thermal fuse for heater

Heater fuse

3.5 Specification of 3-Pipe Multi Controller Parts.

Model Name

Pulse modulating valve

Temperature sensor

RBM-Y1032-PE RBM-Y1042-PE

EV23RC7, Coil DC 12V

At 0ºC = 32.8kΩ, 25°C = 10kΩ, 50°C = 3.6kΩ

FS-085-0031

FT69

Primary side:AC240V, Secondary side:AC12V

G2R-117P, Coil DC 12V

10.4 W/m

65W50W

Cut out at 119°C

RBM-Y1032F-PE RBM-Y1042F-PE

EV23RC7, Coil DC 12V

At 0ºC = 32.8kΩ, 25°C = 10kΩ, 50°C = 3.6kΩ

Float switch

Model name

Power supply transformer

Specification

Relay (PC board)

Heater

Thermal fuse for heater

Heater fuse

Discharge gas side 2-way valve

Suction gas side 2-way valve

2-way valve

2-way valve NEV603DXF-AC240V

Specifications are subject to change without notice.

Primary side:AC240V, Secondary side:AC12V

REV-1506DXFQ6, Coil AC240V

FS-085-0031

FT69

G2R-117P, Coil DC 12V

10.4 W/m

Cut out at 119°C

RP100-03, Coil AC240V

NEV202DXF-AC240V

65W50W

4. CONSTRUCTION VIEWS

4.1 2-Pipe Outdoor Unit (MAR-M102HTM8-PE).

Rear air inlet.

ø 610

1290

650

1100

4 slots (15 x 20) for fixing bolts.



790

834



Air outlet.

750

120

Side air inlet.

Refrigerant pipe

connection.

Liquid Ø 15.9

Gas Ø 28.6

365

335

140 65



1212



100

1410

500

2 x Fork lift slots.

Piping knockout.

(150 x 60)

Wiring knockouts. 1 x Ø25, 2 x Ø20

4.2 3-Pipe Outdoor Unit (MAR-F102HTM8-PE).

Rear air inlet.

ø 610

1290

650

1100

4 slots (15 x 20) for fixing bolts.



834

790



Air outlet.

750

120

Side air inlet.

Refrigerant pipe

connection.

Suction gas Ø 28.6 Discharge gas Ø 19.0

Liquid Ø 15.9

365

335



1212

65140



100

1410

500

2 x Fork lift slots.

Piping knockout.

(150 x 60)

Wiring knockouts. 1 x Ø25, 2 x Ø20

4.3 Multi Controllers.

Wiring knockouts

Refrigerant piping joint (brazing)

Liquid side φ 15.9

6 xφ 20

Refrigerant piping joint (brazing)

Discharge gas side φ 19

Wiring knockouts

Refrigerant piping joint (brazing)

Liquid side φ 15.9

6 xφ 20

540

2 Slots for

hanging bolts

(12 x 52)

3-PIPE: RBM-Y1032F-PE, RBM-Y1042F-PE

540

2-PIPE: RBM-Y1032-PE, RBM-Y1042-PE

Refrigerant piping joint (brazing)

Suction gas side φ28.6

---

Refrigerant piping joint (brazing)

Suction gas side φ28.6

Indoor unit piping

100 or more

Outdoor unit

side

500

or more

500

or more

piping side

500

or more

450 x 450 inspection opening

Electric parts box

Note: Make an inspection opening at the specified location.

This is required for testing and servicing.

2 Notches for hanging bolt

(12 x 21)

Electrical parts box

Refrigerant piping joint (brazing)

Gas side φ 19

φ12.7

Refrigerant piping joint (brazing)

Liquid side

A BC DE F G

460 300 90 90 100

530 370 90 90 90 90 190

460 300 90 90

530 370 90 90 90 90

MODEL

RBM-Y1032-PE

RBM-Y1042-PE

RBM-Y1032F-PE

RBM-Y1042F-PE

5.1 2-Pipe Outdoor Unit (MAR-M102HTM8-PE)

5. WIRING DIAGRAMS

Symbol Part Name

CM 1, 2 Compressor FM 1, 2 Fan Motor 52C 1, 2, 3 Electromagnetic contactor

for compressor 49C 1, 2 Inner overload relay 51C 3 Overload relay PMV1 Pulse modulating valve 63H 1, 2 High pressure switch RC 1, 2 Running capacitor SV 1, 2, 4 Two-way valve 20SF Four-way valve 63L Low pressure switch CH Crank case heater Tr 1, 2 Transformer 47C Reverse phase protector Th D1, D2, S, E Temperature sensor CD 1, 2 Current detector

Ferrite Core

Noise filter

Capacitor

Fuse

Electric

Starter

3 ø

Rectifier

Noise

Filter

Reactor

Electrolytic

Capacitor

Power Transistor

Clip

Diode

Inverter Control PC Board

MCC - 1251

Thermostat

Clip Diode

(Inverter)

Notes :

1.The dashed lines indicate wiring on site.

2. and indicate terminal blocks, and numbers within them are terminal numbers.

2345678

3. indicates a printed circuit board.

DANGER

THE ELECTROLYTIC CAPACITORS IN THIS PANEL ARE CHARGED TO 600 VOLTS D. C.

BEFORE SERVICING, TURN OFF THE POWER SUPPLY AND ALLOW AT LEAST 20 MINUTES FOR THE CAPACITORS TO DISCHARGE TO A SAFE LEVEL OF 5 VOLTS D.C. OR LESS. TEST WITH A D.C. VOLT METER AS SHOWN.

Resistor

NEVER SHORT THE CAPACITOR TERMINALS WITH ANY METAL IMPLEMENT TO DISCHARGE. PERSONAL INJURY OR EQUIPMENT DAMAGE MAY RESULT.

Parts layout

Fuse

Relay

Fuse

Noise

Filter

Noise

filter

Capacitor

Interface Control Board

MCC - 1211

Pressure

Sensor

Electrolytic Capacitors

PC boards

Fuse

Power supply

PC board locations

MCC-1211

Inverter

Compressor

Power Transistor

Rectifier

3 ø

Noise filter

Connectors

1~6

7~12

Surge Absorber

Power Supply

Surge

Absorber

5.2 3-Pipe Outdoor Unit (MAR-F102HTM8-PE)

Symbol Part Name

CM 1, 2 Compressor FM 1, 2 Fan Motor 52C 1, 2, 3 Electromagnetic

contactor for compressor 49C 1, 2 Inner overload relay 51C 3 Overload relay PMV 1 Pulse modulating vavle 63H 1, 2 High pressure switch RC 1, 2 Running capacitor SV 1, 2, 4, 5, 13, 14, 15, 16 Two-way valve 20SF Four-way valve 63L Low pressure switch CH Crank case heater Tr 1, 2 Transformer 47C Reverse phase protector LD 71, 72, 73, 74 Fault indicator lamp Th D1, D2, S, E. O Temperature sensor CD 1, 2 Current detector

Ferrite Core

Noise filter

Fuse

Electric

starter

3 ø

Rectifier

Noise

filter

Reactor

Electrolytic

Capacitor

Power Transistor

Clip

Diode

Inverter Control PC Board

MCC - 1251

Thermostat

Clip Diode

(Inverter)

Notes :

1.The dashed lines indicate wiring on site.

2. and indicate terminal blocks, and numbers within them are terminal numbers.

2345678

3. indicates a printed circuit board.

DANGER

THE ELECTROLYTIC CAPACITORS IN THIS PANEL ARE CHARGED TO 600 VOLTS D. C.

BEFORE SERVICING, TURN OFF THE POWER SUPPLY AND ALLOW AT LEAST 20 MINUTES FOR THE CAPACITORS TO DISCHARGE TO A SAFE LEVEL OF 5 VOLTS D.C. OR LESS. TEST WITH A D.C. VOLT METER AS SHOWN.

Resistor

NEVER SHORT THE CAPACITOR TERMINALS WITH ANY METAL IMPLEMENT TO DISCHARGE. PERSONAL INJURY OR EQUIPMENT DAMAGE MAY RESULT.

Parts layout

FM3

Inverter

Compressor

Fuse

Surge Absorber

Relay

Surge Absorber

Power supply

Fuse

Noise

filter

Noise

filter

Pressure

sensor

Interface Control PC Board

MCC - 1223

Electrolytic Capacitors

PC boards

Fuse

Power supply

PC board locations

MCC-1223

Power Transistor

Rectifier

3 ø

Noise filter

Connectors

1~6

7~12

15 16

5.3 2-Pipe Multi Controller (RBM-Y1032-PE, RBM-Y1042-PE).

K13

Spark killer

Capacity rank setting

ABCD

7 Segment LED

LD1 LD2

Display selector switch

COM

NO NC

INDOOR

UNIT A

Symbol

PMVA, B, C, D

ThA, B, C, D, X

LD1, LD2

Parts layout

INDOOR

UNIT B

INDOOR

UNIT C

Part Name

Pulse modulating valve

Temperature sensor

Transformer

Float switch

Heater

Reset switch

Fault Indicator LED

Control PC Board

Terminal Plate

Trans

INDOOR

UNIT D

Reset switch

OUTDOOR

UNIT

• The dashed lines indicate wiring on site.

• and indicate terminal blocks, and numbers

within them are terminal numbers.

• indicates a printed circuit board.

• The frame indicates the product body.

• RBM-Y1032-PE does not have PMVD, ThD or the

connection block for Indoor unit D .

The capacity rank code setting for unit D is to be set to "0".

5.4 3-Pipe Multi Controller (RBM-Y1032F-PE, RBM-Y1042F-PE).

7 Segment LED

Capacity rank setting

D C A

Display selector switch

Spark killer

Symbol

PMV A, B, C, D

Th A, B, C, D, X

SVD (A), (B), (C), (D)

SVS (A), (B), (C), (D)

SVDD

SVSS

SVH

LD 101, 102, 103, 104

Parts layout

Part Name

Pulse modulating valve

Temperature sensor

Power transformer

Float switch

Heater

Reset switch

Fuse (T1A)

Electrically operated valve for discharge gas side

Electrically operated valve for suction gas side

Electrically operated valve for increasing pressure

Electrically operated valve for decreasing pressure

Electrically operated valve for superheat control

Fault indicator LED

Control PC Board

Terminal Plate

Trans

Reset switch

Indoor unit A

• The dashed lines indicate wiring on site.

• and indicate terminal blocks, and numbers within them are

terminal numbers.

• indicates a printed circuit board.

• The frame indicates the product body.

Indoor unit B

Indoor unit C

Indoor unit D

Outdoor Unit

• RBM-Y1032F-PE does not have PMVD, SVD(D), SVS(D) ThD,or the

connection block for Indoor unit D. The capacity rank code setting for unit D is to be set to "0".

6.1 2-Pipe system.

6. REFRIGERANT CYCLE DIAGRAMS

Check

joint

Bypass capillary →1.5 x 600L

Outdoor unit

High pressure

switch

Pressure

sensor

Heat exchanger

Expansion

valve

Packed

valve

Inverter

Dryer

D.O.L.

High pressure

switch

Ø2.0 x 800L Capillary

SV1 (For high pressure release)

receiver

Liquid

Compressor

SV4 (For No. 2 compressor start up)

SV2 (For gas balance and hot gas bypass)

Check

joint

4-Way valve

PMV1 (For cooling bypass)

Service

valve

Accumulator

Strainer

Expansion

valve

Multi controller (1)

Strainer

Indoor unit

(Liquid

side)

(Gas side)

Strainer

Multi controller (2)

Indoor unit

6.2 3-Pipe system.

THX

7. SELF DIAGNOSTIC DISPLAY INFORMATION

7.1 MAR-M102HTM8-PE, 2-Pipe Outdoor Unit.

Malfunction judgement is performed using the self-diagnostic function of the outdoor unit. The combination of the display switch and the 8 LED's (LED 1 ~ LED 8) indicate the diagnostic details.

Fuse 20Ax3

R S T

52C3

U V W 51C3

Electrolytic

Capacitors

Interface control board

MCC-1211

L1 L2 L3 N

Power supply

Power Transistor

1 2 3

M/C (1) M/C (2)

Electrical parts location

MCC-1211



MCC-1252

Inverter control board

MCC-1251

Connectors

1 2 3

LED 1~8



Display switch

Interface control board

7.1.1 Display switch information.

Switch position Malfunction information

0 System Communication 1 Status of Compressors 2 System Status 3 Fault Diagnostics (Outdoor Units) 4 M/C 1 Units A & B Indoor Capacity Codes 5 M/C 1 Units C & D Indoor Capacity Codes 6 M/C 2 Units A & B Indoor Capacity Codes 7 M/C 2 Units C & D Indoor Capacity Codes 8 Fault Diagnostics (Multi Controller) 9 Circuit Test

10 ~ 15 Not used

7.1.2 Display switch set to position "0".

LED 1 LED 2 LED 3 LED 4 LED 5 LED 6 LED 7 LED 8

7.1.3 Display switch set to position "1".

O: LED on

X: LED off

LED 5

LED 6

LED 7

LED 8

On: Receiving serial signal from multi controller 1 On: Sending serial signal to multi controller 1 On: Receiving serial signal from multi controller 2 On: Sending serial signal to multi controller 2 On: Receiving serial signal from inverter control board On: Sending serial signal to inverter control board

LED 1

X X X X X

X O O O O O O O O

D.O.L. compressor

Frequency control

LED 2

X O O O O X X X X O O O O

LED 3

X O X X O O X X O O X X O O

LED 4

LED's on: Frequency control due to protection circuit

Inverter frequency

0Hz 30Hz 36Hz 42Hz 46Hz 53Hz 61Hz 69Hz 76Hz 84Hz 92Hz

103Hz

111Hz

122Hz

LED's on : Run / LED's off : Stop

S0 S3 S4 S5 S6 S7 S8

S9 SA SB SC SD SE

7.1.4 Display switch set to position "2".

LED 1

LED 2

LED 3

LED 4

LED 5

LED 6

LED 7

LED 8

Operating mode

Defrost operation

PMV status

Return signal

Inverter abnormality

D.O.L. Compressor abnormality

LED on: Heating LED off: Cooling

LED on: Defrost

LED on: Opening LED off: Closing

LED on: Return signal not receiving from INV

7.1.5 Display switch set to position "3".

LED 1 ThD1 sensor abnormality LED on: Sensor open / short circuit LED 2 ThD2 sensor abnormality LED 3 ThS sensor abnormality LED 4 High pressure abnormality LED on: High pressure abnormal

(detected by pressure sensor) LED 5 Pressure sensor abnormality LED on: Pressure sensor abnormal LED 6 Discharge temperature abnormality LED on: Discharge temperature abnormal

(detected by ThD1or ThD2 sensor) LED 7 Suction temperature abnormality LED on: Suction temperature abnormal

(detected by ThS sensor) LED 8 Low pressure, gas leakage abnormality LED on: Low pressure switch functioning

7.1.6 Display switch set to position "4", "5", "6" or "7"

Sw4

Sw5 Capacity rank of indoor unit connected to Capacity rank of indoor unit connected to

Sw6 Capacity rank of indoor unit connected to Capacity rank of indoor unit connected to

Sw7 Capacity rank of indoor unit connected to Capacity rank of indoor unit connected to

LED 1

Capacity rank of indoor unit connected to Capacity rank of indoor unit connected to M/C (1) - Unit A M/C (1) - Unit B

M/C (1) - Unit C M/C (1) - Unit D

M/C (2) - Unit A M/C (2) - Unit B

M/C (2) - Unit C M/C (2) - Unit D

O: LED on X: LED off

X X X X X

X O O

LED 2

X O O O O

LED 3 LED 4 LED 5 LED 6 LED 7

O O X X O O X O

Indoor unit model capacity rank Code No. X O X O X O X X

10 13 16 20 26

36 46

LED 8

2 3 4 5 6

(Indoor unit model example: Model RAV-362UH-PE, Capacity rank = 36)

7.1.7 Display switch set to position "8".

LED 1 Th(A) sensor abnormality LED on: sensor open / short circuit. LED 2 Th(B) sensor abnormality LED 3 Th(C) sensor abnormality LED 4 Th(D) sensor abnormality LED 5 Th(X) sensor abnormality LED 6 Over-capacity

Light on when the total capacity of the indoor units exceeds 1.35 times the outdoor unit capacity.

LED 7 M/C (1) fault. LED on : Abnormal

LED 8 M/C (2) fault. LED on : Abnormal

7.1.8 Display switch on set to position "9".

LED 1 M/C (1) Unit A LED 2 Unit B LED 3 Unit C LED 4 Unit D LED 5 M/C (2) Unit A LED 6 Unit B LED 7 Unit C LED 8 Unit D

When a LED is ON it indicates that there is a wiring or piping fault between the multi controller and the relevant indooor unit. (Refer to circuit connection test procedure).

7.2 RBM-Y1032-PE / RBM-Y1042-PE, 2-Pipe Multi Controller.

The combination of the display switch and the two 7 segment LED's (LD1, LD2) indicate the diagnostic details.

MCC - 1210

7 Segment LED

Capacity rank switches.

Unit A Unit C Unit B Unit D

Multi controller control board

7.2.1 Display switch information.

Switch position Malfunction information

0 System Communication 1 Fault Codes 2 Level of Demand 3 Oil retrieval, Superheat control, Defrost 4 Operating Mode 5 Restart Timer 6 Circuit Test 7 PMV (A) Position 8 PMV (B) Position 9 PMV (C) Position 10 PMV (D) Position 11 ThA Sensor Data 12 ThB Sensor Data 13 ThC Sensor Data 14 ThD Sensor Data

15 ThX Sensor Data

LD 1

LD 2

∏

Display switch

Switch Position

Indication

LD 1

7 Segment LED display.

LD 2

Serial signal

Fault

Codes

Demand

Oil

retrieval,

superheat

control

Defrost

Operation

mode

Restart

timer

Circuit test

PMV A

PMV B

PMV C

PMV D

ThA

ThB

ThC

ThD

ThX

---

Receiving

from

unit B

Sending

unit B

---

Sending

unit A

Receiving

from

unit A

Receiving

from

Outdoor

Unit

from

unit D

Sending

unit D

Receiving

--- ---

Sending

unit C

Receiving

from

unit C

Fault code display (Normal [00]) Refer to fault code section for details.

Instructed demand frequency of Cooling or Heating [00 - 1F] Refer to table below.

---

Oil

retrieval

unit B

Superheat

control

unit B

---

Superheat

control

unit A

Oil

retrieval

unit A

---

Oil

retrieval

unit D

Superheat

control

unit D

Superheat

control

unit C

Oil

retrieval

unit C

Displays [dF] during defrost operation

Multi controller

Heating [H], Cooling [C]

Stop [0]

Outdoor unit

Heating [H], Cooling [C]

Other [0], Defrost [J]

Normal display [00], Restart timer counting [01]

Displays unit being tested [A b C d]

Indicates faulty unit connection [A b C d]

Displays the degree of PMV opening (0 - 240) as a Hexadecimal Code:

[00] : Closed, [F0] : Fully Open

Displays sensor temperature

Refer to the sensor temperature conversion table (7.2.3).

Sending

Outdoor

Unit

------ ---

7.2.2 Display switch set to position "2"

Displays the instructed demand frequency of heating or cooling from the multi-controller to the outdoor unit.

Display conversion table

Display code

Frequency conversion

00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

0 0 0 3.9 6.9 10.0 13.1 16.2 19.3 22.4 25.5 28.6 31.7 34.8 37.9 41.0

value (Hz)

Display code

Frequency conversion value (Hz)

10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F

44.1 47.2 50.3 58.4 56.5 59.6 62.7 65.8 68.9 72.0 75.1 78.2 81.3 84.4 87.5 90.0

7.2.3 Display switch set to position "11", "12", "13" and "14".

Multi controller - ThA, B, C, D and X sensor conversion table.

Display

18 -10.0

1C -9.0

20 -8.0

24 -7.0

28 -6.0

2C -5.0

30 -4.0

34 -3.0

38 -2.0

3C -1.0

40 0.0

Display [00] signifies sensor open circuit.

7.2.4 Circuit connection test procedure.

The 2-Pipe system has a feature which enables it to check that the wiring and piping connections

Tempera-

ture (°C)

Display

44 1.0

48 2.0

4C 3.0

50 4.0

54 5.0

58 6.0

5C 7.0

60 8.0

64 9.0

68 10.0

6C 11.0

Tempera-

ture (°C)

Display

70 12.0

74 13.0

78 14.0

7C 15.0

80 16.0

84 17.0

88 18.0

8C 19.0

90 20.0

94 21.0

98 22.0

Tempera-

ture (°C)

Display

9C 23.0

A0 24.0

A4 25.0

A8 26.0

AC 27.0

B0 28.0

B4 29.0

B8 30.0

Tempera-

ture (°C)

are aligned with each other. This is carried out by allowing refrigerant to flow to one Indoor unit at

a time and monitor the Indoor units coil sensor for a corresponding drop in temperature. Each

indoor unit is tested in turn and where two Multi controllers are installed each Multi controller is

tested in turn.

This test would normally be used at the commisioning stage.

Procedure for initialising the circuit test.

1. Turn the power off.

2. Ensure capacity codes are set correctly, capacity switches set to "0" are not tested.

3. Put the Outdoor display switch to 9 and Multi controller(s) display switch to 6.

4. Turn the power back on.

5. Set all the Remote controllers to cool mode and 29ºC.

6. Press the on / off button to start the indoor units.

7. Go to the Outdoor unit and press switch J2 (above 8xLED's) for 3 seconds.

8. The system is now in self-testing mode (all 8 LED's will be flashing rapidly).

9. The system will stop at the end of the test.

In the event of cross wiring / piping the system will indicate which units are faulty. Refer to self

diagnostic information (7.1.8).

7.3 MAR-F102HTM8-PE, 3-Pipe Outdoor Unit.

Malfunction judgement is performed using the self-diagnostic function of the outdoor unit. The combination of the display switches (SW1, SW2) and the LED's (LD 71 ~ LD 74) indicate the diagnostic details.

Fuse 20Ax3

R S T

52C3

U V W 51C3

Electrolytic

Capacitors

Interface control board

MCC-1223

L1 L2 L3 N

Power supply

Power Transistor

1 2 3

M/C (1) M/C (2)

Electrical parts location

MCC-1223

MCC-1252

Inverter control board

MCC-1251

Connectors

1 2 3

7 Segment LED



LD71 LD72 LD73 LD74



SW1 SW2

SW4 SW3

Interface control board

Display switches

7.3.1 Display switch SW1 set to position "0"

Communication serial signals and the system operating status are displayed by changing display

switch SW2.

Display

Switch

SW2

Position

Indication

Sending / receiving status of interface control board serial signal

Operating

Operating instruction from M/C (1)

Outdoor unit operating condition

mode

Instruction frequency

Operating mode

7 Segment LED Display

Between M/C (1)

Sending only [S]

Receiving only [J]

Heating [H], Simultaneous cooling/heating [HC], Cooling [C], Stop [ ]

Heating frequency [00-1F]

(Refer to conversion table)

Heating [H], Cooling [0C], Simultaneous heating [Hc] Defrost [J0], Simultaneous cooling [hC]

M/C operation Off: [0] 1 unit: [1] 2 unit: [2]

Between M/C (2)

Not sending or receiving [ ]

Sending and receiving [0]

Frequency release No: [0] Yes: [1]

LD74LD71 LD72 LD73

Between Inverter

Cooling frequency [00-1F]

(Refer to conversion table)

Non-inverter compressor

Abnormal [E]

Normal [0]

Operating

Operating instruction from M/C (2)

Inverter operation status

Operating instruction to inverter from interface control board

Power supply frequency

mode

Instruction frequency

Heating [H], Simultaneous cooling/heating [HC], Cooling [C], Stop [-]

Heating frequency [00-1F]

(Refer to conversion table)

Normal [C]

Abnormal [E]

Normal [C]

Abnormal [E]

50Hz [5]

60Hz [6]

Operating frequency

[0-F], (Refer to table) Instruction frequency

[0-F] (Refer to table)

[0]

Cooling frequency [00-1F]

(Refer to conversion table)

Display code conversion table - Instruction frequency from Multi Controller.

Display code

Frequency conversion value (Hz)

Display code

Frequency conversion value (Hz)

Display code conversion table - Operating frequency of Inverter Compressor.

Display code

Frequency conversion value (Hz)

44.1

47.2

30.5

50.3

38.1

3.9

53.4

42.0

6.9

56.5

45.8

10.0

59.6

53.4

13.0

62.7

61.0

16.2

65.8

68.7

19.3

68.9

22.4

72.0

76.3

25.5

75.1

83.9

28.6

78.2

91.6

37.9

87.5

41.0

90.0

121.6

31.7

34.8

81.3

84.4

103.0

110.6

7.3.2 Display switch SW1 set to position "1"

PMV opening information is displayed.

Display

switch

SW2

7.3.3 Display switch SW1 set to position "2"

Malfunction information is displayed, refer to fault code section for details.

Display switch SW2

Indication

PMV1 opening

PMV2 opening

Indication

Check code display for the Outdoor unit, M/C (1), M/C (2)

LD71

[P]

[E]

7 Segment LED Display

LD72 LD73

[1]

[2]

7 segment LED display

LD72LD71

Outdoor unit: [r] M/C (1): [1] M/C (2): [2]

LD74

Displays the degree of PMV opening (0 - 240) as a Hexadecimal Code:

[00] : Closed, [F0] : Fully Open

LD73

Refer to fault code section for details.

LD74

7.3.4 Display switch SW1 set to position "3"

The indoor unit capacity rank setting is displayed.

Display

Switch

SW2

Indoor unit code No. conversion table.

Code No.

Outdoor unit HP

Capacity rank of indoor unit connected to M/C (1)

Capacity rank of indoor unit connected to M/C (2)

Indication

LD71

Unit A

Unit B

Unit C

Unit A

Unit B

Unit C

Unit D

2 3 4 5 6 8 10

7 Segment LED Display

LD72

[9]

[A]

[b]

[C]

Displays the code number of the indoor unit registered to each M/C.

[d]Unit D

Refer to the table below for indoor unit model capacity rank.

[A]

[b]

[C]

[d]

8 HP [8], 10 HP [A]

LD73

[H]

LD74

[P]

Capacity rank

(Indoor unit model example: Model RAV-362UH-PE, Capacity rank = 36)

7.3.5 Display switch SW1 set to position "4"

The sensor data is displayed.

Display

Switch

SW2

No Correction

Indication

Pressure sensor data

ThD1 sensor data

ThD2 sensor data

ThS sensor data

TE sensor data

TO sensor data

10 13 16 20 26 36 46

7 Segment

LED Display

LD71

[P]

[d]

[S]

[h]

LD72

[d]

[1]

[2]

[1]

[E]

[0]

LD73

Displays sensors reading.

Refer to the following

conversion tables.

LD74

7.3.6 Outdoor unit - Pressure sensor data.

Display

17 0.0

1E 1.0

25 2.0

2D 3.0

34 4.0

3B 5.0

43 6.0

4A 7.0

51 8.0

58 9.0

5C 9.5

60 10.0

63 10.5

These are sample displays. Intermediate displays to those above are possible.

Pressure

(kgf/cm2G)

Display

67 11.0

6B 11.5

6E 12.0

72 12.5

76 13.0

79 13.5

7D 14.0

81 14.5

84 15.0

88 15.5

8B 16.0

8F 16.5

93 17.0

Pressure

(kgf/cm2G)

Display

96 17.5

9A 18.0

9E 18.5

A1 19.0

A5 19.5

A9 20.0

AC 20.5

BD 21.0

B4 21.5

B7 22.0

BB 22.5

BE 23.0

C2 23.5

Pressure

(kgf/cm2G)

Display

C6 24.0

C9 24.5

CD 25.0

D1 25.5

D4 26.0

D8 26.5

DC 27.0

DF 27.5

E3 28.0

E7 28.5

EA 29.0

EE 29.5

F2 30.0

Pressure

(kgf/cm2G)

7.3.7 Outdoor unit - ThD1 and ThD2 sensor data.

Display

Tempera-

ture (°C)

05 -5.0

07 0.0

09 5.0

0C 10.0

0F 15.0

12 20.0

17 25.0

1C 30.0

22 35.0

These are sample displays. Intermediate displays to those above are possible.

Display [00] signifies sensor open circuit.

Display

28 40.0

30 45.0

38 50.0

41 55.0

4A 60.0

54 65.0

5E 70.0

68 75.0

72 80.0

Tempera-

ture (°C)

Display

7C 85.0

87 90.0

90 95.0

9A 100.0

A2 105.0

AB 110.0

B2 115.0

B9 120.0

C0 125.0

Tempera-

ture (°C)

Display

C6 130.0

CB 135.0

D0 140.0

Tempera-

ture (°C)

7.3.8 Outdoor unit - ThS, TE, TO sensor data.

Display

Tempera-

ture (°C)

2A -20.0

36 -15.0

42 -10.0

51 -5.0

60 0.0

63 1.0

66 2.0

69 3.0

6C 4.0

6F 5.0

73 6.0

76 7.0

79 8.0

These are sample displays. Intermediate displays to those above are possible.

Display [00] signifies sensor open circuit.

Display

7C 9.0

7F 10.0

82 11.0

85 12.0

88 13.0

8B 14.0

8E 15.0

91 16.0

94 17.0

97 18.0

9A 19.0

9C 20.0

9F 21.0

Tempera-

ture (°C)

Display

A2 22.0

A5 23.0

A7 24.0

AA 25.0

AC 26.0

AF 27.0

B1 28.0

B3 29.0

B6 30.0

B8 31.0

BA 32.0

BC 33.0

BE 34.0

Tempera-

ture (°C)

Display

C0 35.0

C2 36.0

C4 37.0

C6 38.0

C8 39.0

C9 40.0

D1 45.0

D8 50.0

DE 55.0

E3 60.0

E7 65.0

EA 70.0

Tempera-

ture (°C)

7.3.9 Circuit connection test procedure.

The 3-Pipe system has a feature which enables it to check that the wiring and piping connections are aligned with each other. This is carried out by allowing refrigerant to flow to one indoor unit at a time and monitor the Indoor units coil sensor for a corresponding drop in temperature. Each Indoor unit is tested in turn and where two Multi controllers are installed each Multi controller is tested in turn.

This test would normally be used at the commisioning stage.

Procedure for inialising the circuit test:

1. Turn the power off.

2. Ensure capacity codes are set correctly, capacity switches set to "0" are not tested.

3. Set the Outdoor display switches SW1 and SW2 to 9 and Multi controller(s) display switch to 6.

4. Turn the power back on.

5. Set all the Remote controllers to cool mode and 29ºC.

6. Press the on / off button to start the Indoor units. The Outdoor LED's show "1020".

7. Press the Oudoor unit switch SW3 for 3 seconds.

8. The system is now in self-testing mode (LED's will be flashing).

9. The system will stop at the end of the test.

In the event of cross wiring / piping the system will indicate which units are faulty, as shown by the LED's. Refer to the table below.

M/C 1

Units indicated

failed the test.

No faults

M/C 2

Units indicated

failed the test.

No faults

7.4 RBM-Y1032F-PE, RBM-Y1042F-PE, 3-Pipe Multi Controller

The combination of the display switch and the four 7 segment LED's (LD101 - LD104) indicate the diagnostic details.

MCC - 1223

7 segment LED

Unit A Unit C

Unit B Unit D

Capacity rank switches

Multi controller control board

Display switch

LD101

Indication

LD102

Switch Position

Serial signal

1 Fault codes

--- ---

[E]

--- ---

---

Frequency instructions to

the outdoor unit.

Oil retrieval, Superheat

control

---

Refer to the 2-Pipe Multi controller display conversion table for display switch position "2".

---

Defrost

M/C operating

Operation mode

Restart timer

5 6

Circuit test

PMV A7

8 9

11 12

PMV B PMV C

PMV D

ThA ThB

ThC ThD

ThX

and Simultaneous Cooling/Heating [HC], Defrost [J-].

mode: Heating [H-] Cooling: [C-]

---

[c]

[k]

[A]

[P]

[b]

[P] [P]

[c]

[P]

[d] [A]

[h]

[b]

[h]

[c]

[h] [h]

[d]

[h]

[H]

7 Segment LED Display

LD103

Receiving

from

unit B

Sending

unit B

Sending

---

unit A

from

unit A

Receiving

from

outdoor

unit

Receiving

from

unit D

Sending

unit D

Receiving

Fault code display (Normal [00] ) Refer to fault code section for details.

Instructed demand frequency of Cooling or Heating [00 - 1F]

Oil

retrieval

unit B

Superheat

control

unit B

---

Superheat

control

unit A

Oil

retrieval

unit A

---

unit D

Superheat

Oil

control

retrieval

---

Displays [dF] during defrost operation

Outdoor unit operating mode:Heating [H-], Cooling [-C], Simultaneous Heating [Hc],

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

---

Displays unit being tested [ A b C d ]

Normal display [0], Restart timer counting [1]

Indicates faulty unit connection [A b C d]

Displays the degree of PMV opening (0 - 240) as a Hexadecimal Code:

[00] : Closed, [F0] : Fully Open

Displays sensor temperature

Refer to the 2-Pipe Multi controller sensor temperature conversion table (7.2.3).

LD104

---

Sending

unit C

Superheat

control

unit C

Receiving

from

unit C

Oil

retrieval

unit C

Sending

outdoor

unit

---

7.5 Inverter control board, 2-Pipe and 3-Pipe Outdoor Units.

The combination of the dip switch SW1 and the four LED's (D1 ~ D4) indicate the inverter compressor speed and diagnostic details.

MCC - 1251

SW1 position

OFF

Inverter control board

Display information

Inverter compressor demand frequency

Inverter compressor actual frequency

D1D2D3

SW1

2 1

OFF

Fault code indication

Fault indication sequence

7.5.1 Inverter compressor speed indication

LED Binary display

X X X X

X X O O

X O X X

X O X O

X O O X

X O O O

O X X X

O X X O

O X O X

O X O O

O O X X

O O X O

Inverter compressor freq.

OFF

0 Hz

30.5 Hz

38.1 Hz

42.0 Hz

45.8 Hz

53.4 Hz

61.0 Hz

68.7 Hz

76.3 Hz

83.9 Hz

91.6 Hz

103.0 Hz

Cooling operation maximum frequency.

O O O X

O O O O

110.6 Hz

121.6 Hz

Heating operation maximum frequency.

7.5.2 Inverter fault code indication.

LED Display

O O O ¤

¤ O O O

O O O O

O ¤ O O

O O ¤ O

Inverter high pressure or compressor winding temperature

Inverter compressor winding short circuit protection

TE sensor open / short circuit (2-Pipe only)

Inverter compressor overload protection

Inverter circuit / compressor failure

Fault indicated

7.5.3 Inverter fault indication sequence.

LED Display

X X X O

X X O X

X X O O

¤ O ¤ ¤

Fault indicated

First failure

Second failure

Third failure

System locked out

X LED off

O LED on

¤ LED flashing

7.6 Control board communication diagram.

Remote controller fault code

Multi controller

M/C (1)

Inverter

control board

INV

Remote

Controller

Indoor Unit

Multi controller

M/C (2)

Interface

control board

I/F

1 minute1 minuteA few seconds

1 minute

Remote controller fault code display time lapse for system malfunctions.

Serial signal abnormalities: Between the I/F and the INV More than 3 minutes.

Between the M/C and the I/F More than 2 minutes.

Between the indoor unit and the M/C More than 1 minute.

Between the remote controller and indoor unit A few seconds.

INV abnormality: More than 3 minutes.

I/F abnormality: More than 2 minutes.

M/C and Indoor unit abnormality: More than 1 minute

8. FAULT CODE DISPLAY INFORMATION

The remote controller, multi controller and outdoor unit have the facility to display fault codes which are used to determine any malfunction of the system.

• The remote controller is provided with a "check" button and a malfunction check display.

• The multi controllers and outdoor units are provided with display switches and LED displays.

Initially malfunctions can be identified from the remote controller check display.

Details of the multi controller and outdoor unit malfunctions can be determined from their control boards. (Multi controller malfunctions are also displayed on the outdoor unit interface control board).

8.1 Fault code identification.

When a malfunction has been identified, do not reset the system. Press the "CHECK" button on the remote controller and observe the malfunction display.

The location and cause of the malfunction can be determined from the fault code.

Flashing "PREHEAT DEFROST"

• The total capacity rank settings of indoor units connected exceeds the allowable level, or an indoor capacity rank is set at "0" (Multi controller).

• For the 2-Pipe system heating operation has priority over cooling. In the event of an indoor unit requesting cooling operation when another is in heating mode, the

"PREHEAT DEFROST" will flash.

"MALFUNCTION CHECK"

Flashes when phases are rotated.

Check button

• Pressing for 1 second will display the number of compressor actuations and fault codes.

• Pressing for 5 seconds will reset the indoor unit microprocessor.

• Pressing for 10 seconds will clear only the fault codes.

Reset button

• Pressing the reset button with a pin will clear the memory.

8.2 Details of the malfunction check display

The following display sequence occurs when the check button is pressed for 1 second.

(Note: Up to 16 indoor units can be connected to one remote controller using group control).

1. The number of compressor "ON" actuations for No.1 outdoor unit is displayed for 2 seconds,

followed by:

2. Fault codes. 2 fault codes for each of the 16 indoor units can be displayed at 2 second intervals.

Example:

Display for the number of compressor "ON" actuations:

MALFUNCTION CHECK

Display for fault codes:

The display is in Hexadecimal Code.

In this case [00 A4] represents 164 compressor "ON" actuations.

MALFUNCTION CHECK MALFUNCTION CHECK

•

Fault code

Indoor unit number

MALFUNCTION CHECK

The 1st fault detected

The 2nd fault detected

In this case indoor unit No.1 has [0C]

•

fault code and indoor unit No.15 has [0d] fault code

followed by [04] fault code.

•

In this case indoor unit No.1 has

[0C] fault code.

i.e. TA sensor abnormality.

MALFUNCTION CHECK

•

8.3 2-Pipe system fault code summary.

Fault codes can be identified from either the Remote controller, Multi controller or Outdoor unit as shown in the diagram below.

Remote controller fault code Multi controller display switch position 1

No communication INV to I/F

No communication M/C to O/D

No communication I/D to M/C

Drain pump fault - I/D unit

TA sensor fault

TC sensor fault

Reverse TC temperature change

No TC temperature change

No communication I/D to R/C

Refer to M/C

"Preheat Defrost" flashing

Refer to O/D

ÜÜ

Ü Ü

No communication I/F to INV

No communication M/C to O/D

M/C control board fault

No communication initially M/C to O/D

ThA sensor fault

ThB sensor fault

ThC sensor fault

ThD sensor fault

ThX sensor fault

M/C drain pump fault

I/D capacity rank codes too high

I/D capacity code set to "0"

Refer to O/D

Outdoor Unit

No communication I/F to INV

Refer to inverter control board diagnostics

Display switch set to position "8" (LED on)

LED 1

LED 2

LED 3

LED 4

LED 5

LED 6

LED 7

LED 8

Display switch set to position "3" (LED on)

LED 1

LED 2

LED 3

LED 4

LED 5

LED 6

LED 7

LED 8

Refer to the section on the inverter control

board diagnostics

ThA sensor fault

ThB sensor fault

ThC sensor fault

ThD sensor fault

ThX sensor fault

Over-capacity

M/C 1 fault

M/C 2 fault

ThD1 sensor fault

ThD2 sensor fault

ThS sensor fault

High pressure fault

Pressure sensor fault

Discharge temperature > 130ºC

Suction temperature > 40ºC

Low pressure < 0.25kgf/cm˝G

Phase rotation incorrect

"MALFUNCTION CHECK" flashing on R/C.

8.4 3-Pipe system fault code summary.

Fault codes can be identified from either the Remote controller, Multi controller or Outdoor unit as shown in the diagram below.

Remote controller fault code Multi controller display switch position 1

No communication INV to I/F

No communication M/C to O/D

No communication I/D to M/C

Drain pump fault - I/D unit

TA sensor fault

TC sensor fault

Reverse TC temperature change

No TC temperature change

No communication I/D to R/C

Refer to M/C

"Preheat Defrost" flashing

Refer to O/D

ÜÜ

No communication I/F to INV

No communication M/C to O/D

M/C control board fault

No communication initially M/C to O/D

ThA sensor fault

ThB sensor fault

ThC sensor fault

ThD sensor fault

ThX sensor fault

M/C drain pump fault

I/D total capacity codes too high

I/D capacity code set to "0"

Refer to O/D

Outdoor Unit

No communication I/F to INV

Refer to inverter control board diagnostics

Interface control board.

SW1 set to "2", SW2 set to "0".

[E] [1] [fault code] Refers to M/C 1 [E] [2] [fault code] Refers to M/C 2

ThA sensor fault

Refer to the section on the inverter control

board diagnostics

ThB sensor fault

ThC sensor fault

ThD sensor fault

ThX sensor fault

M/C drain pump fault

Over-capacity

[E] [r] [fault code] Refers to O/D

ThD1 sensor fault

ThD2 sensor fault

ThS sensor fault

ThO sensor fault

ThE sensor fault

Discharge temperature > 130ºC

Suction temperature > 40ºC

Pressure sensor fault

D.O.L. compressor fault

Low pressure < 0.25kgf/cm˝G

Phase rotation incorrect

"MALFUNCTION CHECK" flashing on R/C.

8.5 Fault codes displayed at the Remote controller.

Diagnostic Funtions

Fault

Code

Sympton

Status of Air

Conditioner

Notes

SERIAL SIGNAL FAULT

Inter-unit communication.

FLOAT SWITCH OPERATION

Indoor unit or Multi controller.

RETURN AIR TEMPERATURE SENSOR (TA)

INDOOR HEAT EXCHANGER SENSOR (TC)

Outdoor unit stops.

Indoor unit fan continues.

Operation stops for Multi controller fault.

Indoor unit fan continues for Indoor unit fault.

Operation

Continues.

Indoor unit fan stops. (PREHEAT DEFROST is displayed on R/C)

1. Wiring fault between I/D and M/C, or M/C and O/D Interface control board, or O/D Interface control board and O/D Inverter control board.

2. This fault code is also displayed when the Inverter heat sink TRS thermal switch operates.

1. For an I/D fault, when other I/D units are operating, the O/D unit continues, the relevant M/C PMV closes and the faulty I/D unit fan operation continues.

2. Float switch open circuit.

3. Drain pipe blocked.

4. Drain pump fault.

1. Sensor open / short circuit.

1. O/D unit stops when the faulty Indoor unit is the only unit operating.

2. Sensor open / short circuit.

MULTI CONTROLLER FAULT

OUTDOOR UNIT FAULT

INVERTER FAULT

Operation

stops

Operation

stops

Operation

stops

1. Refer to Multi controller diagnostics and fault codes.

1. Refer to Outdoor unit diagnostics and fault codes.

1. Inverter compressor fault (short circuit).

2. Check the power supply, wiring, fuses, giant transistor, base drive board, smoothing capacitor, rectifier diode and compressor.

Fault

Code

Diagnostic Funtions

Sympton

Status of Air

Notes

Conditioner

INVERTER COMPRESSOR FAULT

INVERTER MALFUNCTION

OUTDOOR HEAT EXCHANGER SENSOR (TE)

2-Pipe Outdoor unit ONLY.

HIGH PRESSURE FAULT

Operation

stops

Operation

stops

Operation

stops

Operation

stops

1. Inverter compressor fault (overload).

2. Check the power supply, wiring and compressor.

1. Fault in the current detection circuit of the Inverter control board.

2. Check the power circuit, wiring, control boards and compressor.

1. Sensor open / short circuit.

1. High pressure switch or Inner over-load relay malfunction.

2. Operation of the High pressure switch or Inner overload relay, or detected by the Pressure sensor.

REMOTE CONTROLLER COMMUNICATION

Indoor unit

stops

3. Possible causes - gas leak, refrigerant under charge or over-load operating conditions.

4. Phase rotation detected at D.O.L compressor start up.

1. Wiring fault between the Indoor unit and the Remote controller.

8.6 Fault codes displayed at the Multi controller. Display switch set to position "1".

Fault code

80 81 82 83 84 88

8.7 Fault codes displayed at the Outdoor unit. 2-Pipe ; Display switch set to position "3". 3-Pipe ; Display switch SW1 set to position "2", SW2 set to position "0".

Fault code

2-Pipe

ThA sensor fault ThB sensor fault ThC sensor fault ThD sensor fault ThX sensor fault Communication between M/C and O/D

Total I/D capacity codes too high

Multi controller control board malfunction.

3-Pipe

Fault

Sensor open / short circuit.

No initial communication between M/C and O/D Check the wiring and control boards. Fault code is displayed when total I/D capacity exceeds 1.35 times the O/D unit capacity.

Fault Note

Note

LED 1 LED 2 LED 3

LED 6

LED 7

LED 5

LED 8

ErA0 ErA1 ErA2 ErA4 ErA5 ErA6

ErA7

ErAA

ErAE

ThD1 sensor fault ThD2 sensor fault ThS sensor fault ThO sensor fault ThE sensor fault Discharge temperature fault

Suction temperature fault

Pressure sensor fault

Low pressure fault

Sensor open / short circuit.

Detected by ThD1 and ThD2 >130ºC. Possible cause - gas leak, refrigerant under

charge, over-load operating condition, or valve blockage / malfunction.

Detected by ThS > 40ºC. Possible cause - gas leak, refrigerant under

charge, over-load operating condition.

Open / short circuit, or pressure sensor capillary tube block.

Possible cause - gas leak, refrigerant under charge, over-load operating condition, or valve blockage / malfunction.

LED 4

ErAd

D.O.L. compressor fault

Detected by low pressure switch. < 0.25kgf/cm˝G

High pressure switch or over-load relay malfunction.

9. CONTROL FEATURES

NO. CONTROL

Defrost

(Heating mode)

Oil Retrieval

(Cooling mode)

DESCRIPTION

• During heating operation, defrost is controlled by the Outdoor unit heat exchanger temperature sensor (TE).

• When the cumulative operating time with TE in zone [A] has amounted to 25 minutes, defrost operation starts. Subsequent defrosts occur after a cumulative time of 55 minutes. When heating operation resumes after defrost, the timer is reset.

• The maximum defrost period after TE returns to zone [B] is 1 minute.

• Heating operation resumes immediately after TE returns to zone [C].

• During cooling operation, oil retrieval is performed if one or more Indoor units are OFF.

• If this condition is satisfied, when cooling operation commences, oil retrieval takes place for 1 minute. If cooling operation continues, oil retrieval is repeated for 1 minute every 60 minutes.

• During oil retrieval the following occurs:

a. All Multi controller PMV's are opened. The degree of opening is dependant on the capacity of the Indoor unit . b. If the D.O.L. compressor is OFF the inverter compressor speed increases to SD.

• When cooling operation ends the timer is reset.

Temp.

1 min.

Oil

retrieval

(ºC)

60 min.

DIAGRAM

Cooling mode

1 min.

Oil

retrieval

< 60 min.

Compressor

off

Timer

reset

Superheat control

(Cooling mode)

• Superheat is controlled by the Multi controller for cooling operation. The level of superheat is determined by the difference between the evaporator outlet temperature for each Indoor unit (ThA, B, C, D) and the saturation temperature (ThX).

• If the superheat of an Indoor unit enters zone [Y], the relevant M/C PMV opens further to compensate for this increase. The degree of additional opening is dependant on the capacity of the Indoor unit.

• When zone [Z] is reached the PMV opening is held at the level set in zone [Y].

• When the level of superheat returns to zone [X] the control is cancelled.

Superheat

(ºC)

NO.

CONTROL

DESCRIPTION

Simultaneous

Cooling / Heating

operation

3-Pipe ONLY

a. Changeover between cooling and heating operations for each indoor unit.

The solenoid valves inside the Multi controller are energised when operation commands are sent from the Indoor units.

• SVS valve (suction side) opens for a cooling command.

• SVD valve (discharge side) opens for a heating command.

b. Determination of the Outdoor unit operation mode and frequency of the

compressor. These are determined by the difference between the total requested cooling

command frequencies and the total requested heating command frequencies of all Indoor units.

c. Outdoor unit refrigerant control during cooling dominant mode.

• Refrigerant flow is controlled by PMV2. The degree of opening is controlled by the difference of all requested cooling and heating command frequencies and the compressor operation frequency.

This flow control is required to divide cooling exhaust heat appropriately between Indoor units in heating mode and the Outdoor unit heat exchanger.

• High pressure control is performed to ensure that the capacity of the Indoor units in heating is maintained. This is controlled by the Outdoor unit fan control and the changeover from the main heat exchanger to the sub heat exchanger.

d. Outdoor unit refrigerant control during heating dominant mode.

• Superheat control is performed by the Outdoor unit expansion valve.

• Evaporating temperature control is performed by the Outdoor unit fan control to ensure that the capacity of the Indoor units in cooling mode is maintained.

• Changeover from expansion valve to capillary control is performed when there is a minimal difference between the cooling and heating demands and the heat absorbtion of the Outdoor unit heat exchanger is low.

10. VALVE & SENSOR FUNCTION AND OPERATION

10.1 Multi controller - Valve functions, 2-Pipe and 3-Pipe.

Symbol

PMV (A, B, C, D) Flow rate control valve

Multi controller - Valve functions, 3-Pipe ONLY.

SVS (A, B, C, D)

SVSS

SVDD

SVH Superheat solenoid valve

Name of Valve

Suction gas valve

Discharge gas valveSVD (A, B, C, D)

Pressure reducing solenoid valve

Pressure increasing solenoid valve

Description of Function

This opens to the extent corresponding to the capacity and performance required of each Indoor unit.

Opens when commands from the Indoor units requires cooling operation.

Opens when commands from the Indoor units require heating operation.

Opens when the number of units in heating operation is reduced (heating to shutdown or cooling).

Opens when defrost operation starts.

Opens during oil retrieval control in cooling operation.

Opens when the number of units in heating operation is increased (shutdown or cooling to heating).

Opens while control is performed to prevent liquid in discharge pipe from being blocked.

Opens when unit in cooling operation is present.

10.2 Multi controller - Valve operation.

Outdoor

Operation Mode

Shutdown Shutdown, fan

During operation

Indoor Operation Mode

Shutdown, fan Cooling Cooling thermo-control OFF Heating Heating thermo-control OFF

SVD

(3-Pipe ONLY)

OFF OFF OFF OFF

ON ON

SVS

(3-Pipe ONLY)

OFF

ON ON

ON OFF OFF

PMV

Fully closed Fully closed

Rated opening

Fully closed

Rated opening

Fully closed

10.3 Outdoor unit - Valve functions, 2-Pipe and 3-Pipe.

Symbol

20SF

SV1

SV2

SV4

Name of Valve

4-way reversing valve Cooling operation

4-way reversing valve Heating operation

High-pressure release solenoid valve

Hot gas bypass solenoid valve

Solenoid valve for D.O.L. compressor startup

Description of Function

OFF: Normal operation. ON: Low load condition when sub heat exchanger

is required. Used in combination with SV15 (3-Pipe ONLY).

ON: Normal operation. OFF: Defrost operation.

Heating operation. Energised when TE > 11ºC

Opens when Pd < 13kgf/cm˝G (cooling) (For cooling dominant mode and sub heat exchanger operation Pd < 17kgf/cm˝G - 3-Pipe ONLY).

Opens when Outdoor ThO < 0ºC (3-Pipe ONLY). Opens for gas balance when compressor stops

(2-Pipe ONLY).

Opens when the D.O.L compressor starts for unloading.

PMV1

Outdoor unit - Valve functions, 3-Pipe ONLY.

SV5

SV13 Cooling solenoid valve

SV14

SV16

SV15

PMV2

Cooling bypass flow control valve

Gas balance

Solenoid valve for expansion valve

Solenoid valve for capillary

Sub heat exchanger solenoid valve

Outdoor flow control valve

Opens when ThD1 or ThD2 > 110ºC. Opens when ThS > 20ºC

Opens when compressor stops.

Opens for cooling-only operations.

SV14 opens for heating operation.

SV16 opens for low load conditions during heating dominant operation.

Opens for sub heat exchanger requirement.

Opens during cooling dominant operation. Degree of opening depending on cooling / heating

demands.

10.4 Outdoor unit - Valve operation. For the 2-Pipe system only cooling operation, heating operation and valve 20SF are applicable.

Outdoor Operation Mode

Cooling operation

Heating operation

Simultaneous

Outdoor main heat exchanger

Sub heat exchanger

–

Outdoor main heat exchanger

20SF SV15 SV13 SV14 SV16

OFF OFF ON OFF OFF

ON ON ON OFF OFF

ON OFF OFF ON OFF

OFF OFF OFF OFF OFF

cooling-dominant operation

Simultaneous

Sub heat exchanger

Expansion valve

ON ON OFF OFF OFF

ON OFF OFF ON OFF heating-dominant operation

Capillary

ON OFF OFF OFF ON

10.5 Manual operation of valves.

Note: 1. Ensure that the system is OFF before valves are manually operated.

2. Valves will re-assume their required position unless electrically isolated.

PMV2

–

Opening degree control

–

a. Multi controller

Display switch

position

0 1 2 3

Valve

PMV A PMV B PMV C PMV D

b. Outdoor unit - (3-Pipe ONLY)

SW1

SW2

Short Point

TP1

N/A

TP2

TP3

Short point

TP 1

Selected valve is fully opened for 2 minutes.

Operation Function

Valves will automatically assume

their required position after two

minutes.

Push SW04

Press SW03

TP 2

Selected valve is fully closed for 2 minutes.

PMV 1 fully open for 2 minutes.

PMV 2 fully open for 2 minutes. PMV 1 fully closed for 2 minutes. PMV 2 fully closed for 2 minutes.

Solenoid valves manually energised

in sequence when pressed

Solenoid valves

automatically energised in

sequence (1 second intervals)

10.6 Multi controller sensor operation.

According to a difference between the evaporator outlet temperature and (ThA, B, C, D) saturation temperature (ThX):

Temperature sensor

10.7 Outdoor unit - Sensor and switch operation.

a. Performs Superheat control.

(cooling operation)

b. Determines the degree of opening of PMV 2.

(cooling dominant operation - 3-Pipe ONLY)

Discharge pressure sensor

Suction temperature sensor (ThS)

Discharge temperature sensor (ThD1, ThD2)

Outdoor unit heat exchanger sensor (TE)

Heating operation

Outdoor temperature sensor (ThO)

3-Pipe ONLY

Determines the frequency of the inverter compressor and the ON/OFF status of D.O.L compressor.

Controls the Outdoor unit fan operation. (cooling operation)

Controls the hot gas bypass SV2.

Controls the changeover from Outdoor unit main heat exchanger to sub heat exchanger.

Controls the degree of opening of PMV 1. Stops operation when ThS > 40°C for 10 minutes.

Controls the degree of opening of PMV 1. Stops operation when the discharge temperature > 130°C.

Controls the defrost operation. Controls the Outdoor unit fan operation.

Controls the high pressure release valve SV1.

Controls the hot gas bypass SV2.

Controls the Outdoor unit fan operation. Prevents heating operation when ThO > 25°C.

High pressure switch

Low pressure switch

Stops operation when Pd > 30kgf/cm˝G.

Stops operation when suction pressure < 0.25kgf/cm˝G:-

• After 30 seconds for cooling operation.

• After 10 minutes for heating operation.

The low pressure switch is ignored during defrost operation.

11. PRESSURE TEST, EVACUATION AND DEHYDRATION

When Multi controllers are delivered from the factory the PMV's are in the fully open position. After power is supplied to the system the PMV's assume their required operating position, including closed. Before performing the pressure test or evacuation ensure that all Multi controller PMV's are in the fully open position as shown in the "Manual operation of valves" (10.5).

11.1 Pressure test.

• Supply oxygen free nitrogen (OFN) gas at a pressure of 30kgf/cm˝G to the charge port on the suction gas side service valve.

11.2 Evacuation and Dehydration.

• When removing air and dehydrating refrigerant pipe work use an approved type of vacuum pump, do NOT use refrigerant to purge the air.

2-Pipe evacuation positions: Liquid pipe and Gas pipe charge ports. 3-Pipe evacuation positions: Liquid pipe and Discharge gas pipe charge ports. (Refer to diagrams below).

• Ensure to create a vacuum of -76cmHg at both the Liquid and Gas sides.

2-Pipe

3-Pipe

Charge ports

Charge port

Service valve

Liquid pipe

Gas pipe

Packed valves

Liquid pipe

Discharge gas pipe

Service valve

Suction gas pipe

12. ADDITIONAL REFRIGERANT

• The Super multi outdoor units contain sufficient refrigerant to operate an installation having 5 metres of pipework (when delivered).

• Refer to the diagram below when calculating the amount of refrigerant required, use only HCFC - 22.

• The total refrigerant charge must be calculated by the weight, and within a tolerance of ± 50g.

• Prolonged operation with either an overcharge or deficiency in refrigerant will lead to loss of performance, increased running costs and will cause damage to the machine. Warranty will be void.

• The piping length is the actual one way length of the pipe at the liquid side of all branch circuits.

• The initial charge is:

Model

MAR-M102HTM8-PE

MAR-F102HTM8-PE

Refrigerant charge

18.6 kg

21.6 kg

Indoor unit branch pipes

RAV - 10* RAV - 13* RAV - 16* RAV - 20* RAV - 26* RAV - 36* RAV - 46*

0.030 kg/m

0.045 kg/m

Single Multi controller

Main pipe run (minus 3m.) x 0.190 kg/m = Branch pipe A (minus 2m.) x See above table = Branch pipe B (minus 2m.) x See above table = Branch pipe C (minus 2m.) x See above table = Branch pipe D (minus 2m.) x See above table =

Total additional gas charge =

Two Multi controllers

Main pipe run (minus 2m) x 0.190 kg/m = Total sub pipe (minus 2m) x 0.125 kg/m =

M/C 1 Branch pipe A (minus 2m) x See above table =

Branch pipe B (minus 2m) x See above table = Branch pipe C (minus 2m) x See above table = Branch pipe D (minus 2m) x See above table =

M/C 2 Branch pipe A (minus 2m) x See above table =

Branch pipe B (minus 2m) x See above table = Branch pipe C (minus 2m) x See above table = Branch pipe D (minus 2m) x See above table =

Total additional gas charge =

Example : RAV-462CH-PE ⇒ RAV-46*

13. EXPLODED VIEWS AND SERVICE PARTS LIST

13.1 Outdoor Units (MAR-M102HTM8-PE, MAR-F102HTM8-PE)

13.2 2-Pipe refrigeration assembly parts (MAR-M102HTM8-PE)

13.3 3-Pipe refrigeration assembly parts (MAR-F102HTM8-PE)

Location

No.

1 43A46001 Solenoid coil, 4-way valve 2 43A46002 Solenoid coil assembly

3 43A46003 Solenoid coil assembly

4 43A46005 Solenoid coil assembly

5 43A46006 Solenoid coil assembly

6 43146252 Check valve 7 43146428 Check valve 8 43146351 Service valve (1 1/8") 9 43146503 Packed valve (5/8") 10 43146504 Packed valve (3/4") 11 43146398 Valve body 12 43046151 2-way valve 13 43146526 Pulse modulating valve

14 43146525 Pulse modulating valve

15 43146497 Expansion valve 16 43A46007 4-way valve 17 43A47024 Capillary assembly 18 43A47025 Capillary assembly 19 43A47026 Capillary assembly 20 43A47027 Capillary assembly 21 43A47028 Capillary assembly 22 43A47029 Capillary assembly bypass 23 43145066 Dryer 24 43146383 Check joint 25 43147321 Check joint

Part

No.

Description

(3 coils: 4-way, SV5, SV13)

(3 coils: SV14, SV15, SV16)

(3 coils: SV1, SV2, SV4) 2-Pipe

(3 coils: SV1, SV2, SV4) 3-Pipe

(EV18RC2)

(EV23RC8)

Location

No.

26 43147529 Strainer 27 43147537 Strainer 28 43195185 Cushion, under, compressor 29 43195186 Cushion, upper, compressor 30 43195198 Spacer 31 43107200 Spring, base 32 43146367 Switch, high pressure (20PS-B) 33 43151229 Switch, high pressure (20PS-G) 34 43151230 Switch, low pressure (20PS-1) 35 43146524 Sensor, pressure 36 43141705 Compressor 37 43157254 Heater, crank case 38 43148121 Accumulator 39 43148120 Liquid tank 40 43048009 Fusible plug 41 43A43007 Condenser, right-lower 42 43A43008 Condenser, right-upper 43 43A43009 Condenser, left-lower 44 43A43010 Condenser, left-upper 45 43A43011 Condenser, sub 46 43120170 Propeller fan 47 43121545 Fan motor 48 43A00004 Fin Guard 49 43A19003 Fan Guard 50 43A00006 Side panel L 51 43A00007 Side panel R 52 43A00008 Front panel L 53 43A00009 Front panel R 54 43A00005 Air out cabi 55 43155136 Reactor 56 43A51001 Isolator

Part

No.

Description

13.4 Outdoor unit electrical parts assembly (MAR-M102HTM8-PE, MAR-F102HTM8-PE)

Location

No.

101 43131031 G-Transistor, MG50Q6ES11 102 4316V028 Diode, SR130G-160 103 43150214 TRS-Thermostat, TRC

104 43169617 Noise Filter, DC 105 43169619 Diode Clipper Assembly 106 43160438 Terminal 107 43160450 Terminal, 3P (L1,L2) 108 43160447 Terminal, 6P 109 43160448 Terminal, 6P 110 43169613 Fan Motor (3-Pipe) 111 43169624 PC Board, MCC-1252, Gate 112 4316V025 PC Board, Inverter (2-Pipe)

112 43169623 PC Board, Inverter (3-Pipe)

113 43154156 Relay, LY-1F 114 43155135 Noise Filter 115 43158140 Transformer FT70 116 43155134 Capacitor, MF 117 43060492 Terminal Block, 9P 118 43160449 Terminal, 3P (N) 119 43160503 Terminal Block, 3P (L1, L2, L3) 120 43169625 PC Board, MCC-1253, Surge 121 43160451 Holder, Fuse 122 43160452 Fuse 123 43152356 Magnetic Contactor 124 43160453 Fuse 125 43460526 Fuse

Part

No.

Description

TR-100B10SPT3A

MCC-1251 (INV-M-E) With TE sensor connection

MCC-1251 (INV-F-E)

Location

No.

126 43060859 Fuse Block 127 43169618 Noise Filter 128 43169620 Ferrite Core 129 43169616 Noise Filter, AC 130 43154148 Return Lock STR-4AB 131 43150274 Sensor - ThD1 132 43150275 Sensor - ThD2 133 43150271 Sensor - ThS 134 43150273 Sensor - TE (2-Pipe) 135 43150265 Sensor - TE (3-Pipe) 136 43150272 Sensor - ThO (3-Pipe) 137 4316V027 PC Board, MCC-1211,

138 43169628 PC Board, MCC-1223,

139 43152334 Magnetic Contactor 140 43158139 Transformer FT69 141 43169612 Starter 142 43169621 Capacitor,

143 43169614 SEM Resistor 144 43169615 Hole-CT 145 43055392 Surge Absorber 146 43160493 Clamp Filter 147 43155100 Capacitor (3-Pipe)

Part

No.

Description

Interface (2-Pipe)

Interface (3-Pipe)

LNT2G222KSMCTF

Note: Part 142: Replace both capacitors at the same time.

13.5 2-Pipe Multi controller (RBM-Y1032-PE, RBM-Y1042-PE)

Location

No.

1 43019604 Holder, Sensor 2 43A47019 Strainer 3 43046269 Pulse modulating valve 4 43A47018 Capillary tube 0.8 diameter 5 43146283 Check valve 6 43146540 Expansion valve 7 43151231 Float switch 8 43157253 Panel heater

8 43157252 Panel heater

Part

No.

Description

(RBM-Y1032-PE)

(RBM-Y1042-PE)

13.6 3-Pipe Multi controller (RBM-Y1032F-PE, RBM-Y1042F-PE)

Location

No.

1 43019604 Holder, Sensor 2 43146443 Solenoid coil 3 43046151 2 way valve 4 43046156 Check valve 5 43046269 Pulse modulating valve 6 43046270 2 way valve 7 43847010 Capillary tube 2.0 diameter 8 43146283 Check valve 9 43146398 Valve body 10 43146506 Solenoid coil 11 43146429 Expansion valve 12 43146505 2 way valve 13 43151231 Float switch 14 43157252 Panel heater

Part

No.

Description

(RBM-Y1042F-PE)

Location

No.

15 43157253 Panel heater

16 43189026 Insulator, liquid A 17 43189027 Insulator, liquid B 18 43189028 Insulator, header A

19 43189029 Insulator, header A

20 43189031 Insulator, header B

21 43189032 Insulator, header B

22 43A47011 Capillary tube 0.8 diameter 23 43A47012 Capillary tube 1.0 diameter

Part

No.

Description

(RBM-Y1032F-PE)

(RBM-Y1042F-PE)

(RBM-Y1032F-PE)

(RBM-Y1042F-PE)

(RBM-Y1032F-PE)

13.7 2-Pipe Multi controller electrical parts assembly (RBM-Y1032-PE, RBM-Y1042-PE)

FT69

Outdoor Unit

PJ16

PJ5

PJ4 PJ3

PJ2 PJ1

PJ9

PJ8

PJ7

PJ6

PJ12

THX

THD THC

THB THA

PJ10

PJ14

PJ13

LD2 LD1

7 Segment LED

Capacity rank

switches

Display selector

D C

B A

setting

Indoor Units

Note: Terminal D is present on RBM-Y1042-PE unit only.

Location

No.

Part

No.

Description

101 43158139 Transformer (FT69) 102 4316V026 PC board assembly (MCC-1210) 103 43150162 Sensor (ThA) 104 43150163 Sensor (ThB) 105 43150164 Sensor (ThC) 106 43150165 Sensor (ThD) (RBM-Y1042-PE)

Location

No.

Part

No.

Description

107 43150166 Sensor (ThX) 108 43151242 Micro-switch 109 43A60001 Terminal block 4P 111 43A60008 Fuse T1A 112 43A60007 Fuse holder

13.8 3-Pipe Multi controller electrical parts assembly (RBM-Y1032F-PE, RBM-Y1042F-PE)

FT69

PJ14

PJ13

LD4

LD3

7 Segment LED

LD2LD1

switches

Display selector

setting

Capacity rank

PJ25

PJ24

PJ23

PJ5

PJ4

PJ3 PJ2 PJ1

PJ12

PJ16

THX

THD

THC THB THA

PJ9

PJ8

PJ7

PJ6

PJ10

Outdoor Unit

Indoor Units

Note: Terminal D is present on RBM-Y1042F-PE unit only.

Location

No.

Part

No.

Description

Location

101 43158139 Transformer (FT69) 102 43169627 PC board assembly (MCC-1222) 103 43150162 Sensor (ThA) 104 43150163 Sensor (ThB) 105 43150164 Sensor (ThC) 106 43150165 Sensor (ThD) (RBM-Y1042-PE)

No.

Part

No.

Description

107 43150166 Sensor (ThX) 108 43151242 Micro-switch 109 43A60001 Terminal block 4P 110 43060776 Terminal block 2P 111 43A60008 Fuse T1A 112 43A60007 Fuse holder

TOSHIBA (U.K.) LTD. AIR CONDITIONER DIVISION

PORSHAM CLOSE, BELLIVER INDUSTRIAL ESTATE, PLYMOUTH, PL6 7DB, U.K.

Toshiba MAR-F102HTM8-PE, MAR-M102HTM8-PE SERVICE MANUAL

Specifications and Main Features

Frequently Asked Questions

User Manual

5. WIRING DIAGRAMS

6. REFRIGERANT CYCLE DIAGRAMS

7. SELF DIAGNOSTIC DISPLAY INFORMATION

7.1.1 Display switch information.

8. FAULT CODE DISPLAY INFORMATION

8.4 3-Pipe system fault code summary.

8.5 Fault codes displayed at the Remote controller.

8.6 Fault codes displayed at the Multi controller. Display switch set to position "1".

8.7 Fault codes displayed at the Outdoor unit. 2-Pipe ; Display switch set to position "3". 3-Pipe ; Display switch SW1 set to position "2", SW2 set to position "0".