Technibel MCAF94MR5IAA, MCAF124MR5IAA, MCAF184MR5IAA, MCAF244MR5IAA Technical & Service Manual

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TECHNICAL & SERVICE MANUAL

INDOOR UNIT: MCAF94MR5IAA

MCAF124MR5IAA MCAF184MR5IAA MCAF244MR5IAA

DC INVERTER MULTI-SYSTEM AIR CONDITIONER

MCAF94MR5IAA

MCAF124MR5IAA MCAF184MR5IAA

Destination: General area (50Hz)

Europe (50Hz) Australia (50Hz) General area (60Hz)

Indoor Model No. Product Code No.

MCAF244MR5IAA

MCAF124MR5IAA

MCAF184MR5IAA

MCAF244MR5IAA

MCAF94MR5IAA

IMPORTANT

These air conditioners employ new refrigerant R410A.

Pay special attention when servicing the unit.

Wall Mounted Type Indoor Unit

< Combined Outdoor unit >

GRF194MR5IAA (2-room multi unit)

AGRF244MR5IAA (3-room multi unit) GRF314MR5IAA (4-room multi unit)

1. The indoor unit MCAF244MR5IAA can only be combined with a 4-room multi unit. Therefore, do not combine it with a 2room multi unit or 3-room multi unit.

For details about the combinations, refer to

“Unit Combination Table” in the

T. Service

Manual

for the Multi Outdoor Units.

NOTE

Capacity

3.6 kW

5.0 kW

7.0 kW

2.8 kW

NOV.2003

Table of Contents

Page

1. OPERATING RANGE ............................................................................................................................... 1

2. SPECIFICATIONS

2-1. Unit Specifications.......................................................................................................................... 2

2-2. Major Component Specifications.................................................................................................... 6

2-3. Other Component Specifications.................................................................................................... 9

3. DIMENSIONAL DATA............................................................................................................................... 10

4. REFRIGERANT FLOW DIAGRAM .......................................................................................................... 13

5. PERFORMANCE DATA

5-1. Air Throw Distance Chart ............................................................................................................... 14

6. ELECTRICAL DATA

6-1. Electrical Characteristics................................................................................................................ 18

7. INSTALLATION INSTRUCTIONS

7-1. Indoor Unit...................................................................................................................................... 21

7-2. Connecting Indoor Units................................................................................................................. 22

7-3. Test Run......................................................................................................................................... 25

8. FUNCTIONS

8-1. Operation Functions....................................................................................................................... 26

8-2. Protective Functions....................................................................................................................... 28

9. TROUBLESHOOTING ............................................................................................................................. 29

.................................................................................................................................................. 33

APPENDIX

Important!

Please Read Before Starting

This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently.

For safe installation and trouble-free operation, you must:

● Carefully read this instruction booklet before beginning.

● Follow each installation or repair step exactly as shown.

● Observe all local, state, and national electrical codes.

● Pay close attention to all warning and caution notices

given in this manual.

This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death.

This symbol refers to a hazard or unsafe practice which can result in personal injury or product or property damage.

If Necessary, Get Help

These instructions are all you need for most installation sites and maintenance conditions. If you require help for a special problem, contact our sales/service outlet or your certified dealer for additional instructions.

In Case of Improper Installation

The manufacturer shall in no way be responsible for improper installation or maintenance service, including failure to follow the instructions in this document.

Special Precautions

When Wiring

ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.

• Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked.

• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death.

• Ground the unit following local electrical codes.

• Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.

WARNING

CAUTION

WARNING

When Transporting

Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your fingers.

When Installing…

…In a Ceiling or Wall

Make sure the ceiling/wall is strong enough to hold the unit’s weight. It may be necessary to construct a strong wood or metal frame to provide added support.

…In a Room

Properly insulate any tubing run inside a room to prevent “sweating” that can cause dripping and water damage to walls and floors.

…In Moist or Uneven Locations

Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the outdoor unit. This prevents water damage and abnormal vibration.

…In an Area with High Winds

Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle.

…In a Snowy Area (for Heat Pump-type Systems)

Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents.

When Connecting Refrigerant Tubing

• Use the flare method for connecting tubing.

• Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them, then tighten the nut with a torque wrench for a leakfree connection.

• Check carefully for leaks before starting the test run.

When Servicing

• Turn the power off at the main power box (mains) before opening the unit to check or repair electrical parts and wiring.

• Keep your fingers and clothing away from any moving parts.

• Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced.

Others

• Ventilate any enclosed areas when installing or testing the refrigeration system. Escaped refrigerant gas, on contact with fire or heat, can produce dangerously toxic gas.

• Confirm upon completing installation that no refrigerant gas is leaking. If escaped gas comes in contact with a stove, gas water heater, electric room heater or other heat source, it can produce dangerously toxic gas.

• Do not install only a single indoor unit.

CAUTION

1. OPERATING RANGE

Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.

Cooling

Maximum 32°C D.B. / 23°C W.B. 43°C D.B.

Minimum 19°C D.B. / 14°C W.B. 19°C D.B.

Heating

Maximum 27°C D.B. 24°C D.B. / 18°C W.B.

Minimum 16°C D.B. — / – 15°C W.B.

2. SPECIFICATIONS

2-1. Unit Specifications

Indoor Unit MCAF94MR5IAA

Type Wall hang type indoor unit Power Source 220–240V ~ 50Hz 220V ~ 60Hz Voltage rating 230 V 220 V Performance Cooling Heating Cooling Heating

Capacity kW 2.8 ( 0.7 - 3.2 ) 4.0 ( 0.9 - 5.4 ) 2.8 ( 0.7 - 3.2 ) 4.0 ( 0.9 - 5.4 ) Air circulation (Hi / Me / Lo)

m3/h

620 / 510 / 370 650 / 520 / 460 620 / 510 / 370 650 / 520 / 460

Moisture removal (High) Liters/h 1.6 — 1.6 —

Electrical Rating Cooling Heating Cooling Heating

Available voltage range V 198 ~ 264 198 ~ 242 Running amperes A 0.13 0.14 0.13 0.14 Power input W 26 28 26 28

Features

Controls / Temperature control Microprocessor / I.C. thermostat Control unit Wireless remote control unit Timer ON/OFF 24 hours & Daily program,1-hour OFF Fan speeds 3 and Auto Airflow direction (Indoor) Horizontal Manual

Vertical Auto Air filter Washable, Anti-Mold Operation sound Hi / Me / Lo dB-A 41 / 38 / 33 44 / 39 / 34 41 / 38 / 33 44 / 39 / 34 Refrigerant tubing connections Flare type Refrigerant Narrow tube mm (in.) 6.35(1/4) tube diameter Wide tube mm (in.) 9.52(3/8) Refrigerant g R410A Refrigerant tube kit Optional

Dimensions & Weight

Unit dimensions Height mm 275

Width mm 805 Depth mm 178

Package dimensions Height mm 335

Width mm 860 Depth mm 252

Weight Net kg 8.5

Shipping kg 12

Shipping volume

0.073

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Indoor Unit MCAF124MR5IAA

Type Wall hang type indoor unit Power Source 220–240V ~ 50Hz 220V ~ 60Hz Voltage rating 230 V 220 V Performance Cooling Heating Cooling Heating

Capacity kW 3.6 ( 0.8 - 3.6 ) 4.8 ( 0.9 - 6.3 ) 3.6 ( 0.8 - 3.6 ) 4.8 ( 0.9 - 6.3 ) Air circulation (Hi / Me / Lo)

m3/h

580 / 450 / 400 700 / 600 / 500 580 / 450 / 400 700 / 600 / 500

Moisture removal (High) Liters/h 2.0 — 2.0 —

Electrical Rating Cooling Heating Cooling Heating

Available voltage range V 198 ~ 264 198 ~ 242 Running amperes A 0.13 0.12 0.13 0.12 Power input W 25 25 25 25

Features

Vertical Auto Air filter Washable, Anti-Mold Operation sound Hi / Me / Lo dB-A 46 / 39 / 33 47 / 40 / 34 46 / 39 / 33 47 / 40 / 34 Refrigerant tubing connections Flare type Refrigerant Narrow tube mm (in.) 6.35(1/4) tube diameter Wide tube mm (in.) 9.52(3/8) Refrigerant g R410A Refrigerant tube kit Optional

Dimensions & Weight

Unit dimensions Height mm 285

Width mm 805 Depth mm 219

Package dimensions Height mm 342

Width mm 859 Depth mm 289

Weight Net kg 9.5

Shipping kg 12

Shipping volume

0.085

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Indoor Unit MCAF184MR5IAA

Type Wall hang type indoor unit Power Source 220–240V ~ 50Hz 220V ~ 60Hz Voltage rating 230 V 220 V Performance Cooling Heating Cooling Heating

Capacity kW 5.0 (1.1 - 5.8 ) 7.1 ( 1.2 - 7.8 ) 5.0 (1.1 - 5.8 ) 7.1 ( 1.2 - 7.8 ) Air circulation (Hi / Me / Lo)

m3/h

680 / 620 / 530 800 / 720 / 630 680 / 620 / 530 800 / 720 / 630

Moisture removal (High) Liters/h 2.8 — 2.8 —

Electrical Rating Cooling Heating Cooling Heating

Available voltage range V 198 ~ 264 198 ~ 242 Running amperes A 0.12 0.12 0.12 0.12 Power input W 25 25 25 25

Features

Vertical Auto Air filter Washable, Anti-Mold Operation sound Hi / Me / Lo dB-A 49 / 44 / 38 50 / 49 / 44 49 / 44 / 38 50 / 49 / 44 Refrigerant tubing connections Flare type Refrigerant Narrow tube mm (in.) 6.35(1/4) tube diameter Wide tube mm (in.) 9.52(3/8) Refrigerant g R410A Refrigerant tube kit Optional

Dimensions & Weight

Unit dimensions Height mm 285

Width mm 805 Depth mm 219

Package dimensions Height mm 342

Width mm 859 Depth mm 289

Weight Net kg 9.5

Shipping kg 12

Shipping volume

0.085

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Indoor Unit MCAF244MR5IAA

Type Wall hang type indoor unit Power Source 220–240V ~ 50Hz 220V ~ 60Hz Voltage rating 230 V 220 V Performance Cooling Heating Cooling Heating

Capacity kW 7.0 (1.5 - 8.1 ) 8.0 (2.0 - 8.8 ) 7.0 (1.5 - 8.1 ) 8.0 (2.0 - 8.8 ) Air circulation (Hi / Me / Lo)

m3/h

1100 /1000 / 920 1170 /1070 / 980 1100 /1000 / 920 1170 /1070 / 980

Moisture removal (High) Liters/h 3.4 — 3.4 —

Electrical Rating Cooling Heating Cooling Heating

Available voltage range V 198 ~ 264 198 ~ 242 Running amperes A 0.27 0.28 0.35 0.36 Power input W 63 65 77 79

Features

Vertical Auto Air filter Washable, Anti-Mold Operation sound Hi / Me / Lo dB-A 47 / 43 / 38 47 / 43 / 38 47 / 43 / 38 47 / 43 / 38 Refrigerant tubing connections Flare type Refrigerant Narrow tube mm (in.) 6.35(1/4) tube diameter Wide tube mm (in.) 12.7(1/2) Refrigerant g R410A Refrigerant tube kit Optional

Dimensions & Weight

Unit dimensions Height mm 330

Width mm 1,140 Depth mm 228

Package dimensions Height mm 406

Width mm 1,231 Depth mm 325

Weight Net kg 18

Shipping kg 20

Shipping volume

0.162

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

1100/1000/920 1170/1070/980 1100/1000/920 1170/1070/980

2-2. Major Component Specifications

2-2-1. Indoor Unit

Indoor Unit MCAF94MR5IAA

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Control PCB

Part No. POW-K5DHV5-A1 Controls Microprocessor Control circuit fuse 2.50V 3.15A

Flap Motor and Louver Motor

Type Stepping motor Model MP24S2-5V Rating DC5V Coil resistance (Ambient temp. 25°C) Ω WHT – BLU (respectively 4 wires): 70 ± 7%

Heat Exchanger Coil

Coil Aluminum plate fin / Copper tube Rows 2 Fin pitch mm 1.3 Face area m

0.124

Fan & Fan Motor

Type Fan / Fan motor Cross-flow / DC motor Q’ty … Dia. and length mm 1 … D92 Fan motor model … Q’ty DR-8538-408A … 1 No. of poles 8 Nominal output W 30 Coil resistance (Ambient temp. 20°C) Ω RED – WHT: 3.70

WHT – BLU: 3.70 BLU – RED: 3.70

Safety devices Type —

Operating temp. Open °C —

Close —

Run capacitor µF —

VAC —

Remote Control Unit RCS-3MVHPS4E

Indoor Unit MCAF184MR5IAA

MCAF124MR5IAA

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Control PCB

Part No. POW-K5DHV5-A Controls Microprocessor Control circuit fuse 2.50V 3.15A

Flap Motor and Louver Motor

Type Stepping motor Model MP24S2-5V Rating DC5V Coil resistance (Ambient temp. 25°C) Ω WHT – BLU (respectively 4 wires): 70 ± 7%

Heat Exchanger Coil

Coil Aluminum plate fin / Copper tube Rows 2 Fin pitch mm 1.3 Face area m

0.130

Fan & Fan Motor

Type Fan / Fan motor Cross-flow / DC motor Q’ty … Dia. and length mm 1 … D100 Fan motor model … Q’ty DR-8538-408 … 1 No. of poles 8 Nominal output W 30 Coil resistance (Ambient temp. 20°C) Ω RED – WHT: 3.70

WHT – BLU: 3.70 BLU – RED: 3.70

Safety devices Type —

Operating temp. Open °C —

Close —

Run capacitor µF —

VAC —

Remote Control Unit RCS-3MVHPS4E

Indoor Unit MCAF184MR5IAA

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Control PCB

Part No. POW-KMRV243GJ Controls Microprocessor Control circuit fuse 2.50V 3.15A

Flap Motor and Louver Motor

Type Stepping motor Model MP24GA2 ... 2 Rating DC 12V Coil resistance (Ambient temp. 20°C) Ω Each terminal (1-2, 1-3, 1-4, 1-5): 400 ± 7%

Heat Exchanger Coil

Coil Aluminum plate fin / Copper tube Rows 2 Fin pitch mm 1.3 Face area m

0.214

Fan & Fan Motor

Type Fan / Fan motor Cross-flow / AC motor Q’ty … Dia. and length mm 1 … D100 Fan motor model … Q’ty KFG4X-31B6P-S … 1 No. of poles … rpm (220V, High) 4 ... 1269 Nominal output W 30 Coil resistance (Ambient temp. 20°C) Ω BRN – WHT:161.2 ORG – YEL: 26.9

WHT– VLT: 11.6 YEL – BLK: 22.8 VLT – ORG: 68.7 BLK – PNK: 115.2

Safety devices Type Thermal protector

Operating temp. Open °C 130 ± 8

Close °C 79 ±15

Run capacitor µF 1.5

VAC 480

Remote Control Unit RCS-3MVHPS4E

2-3. Other Component Specifications

Indoor Unit MCAF94MR5IAA

MCAF124MR5IAA MCAF184MR5IAA MCAF244MR5IAA

0 102030405060708090

100

120

140

160

180

200

15 20 25 30 35 40

• Indoor air temp sensor

• Indoor heat exchanger sensor

• Humidity sensor

30 35 40 45 50 55 60 65 70 75 80 85 90

100

1000

25°C

Resistance (Ω)

Temperature (°C)

Relative humidity (%)

3. DIMENSIONAL DATA

Indoor Unit MCAF94MR5IAA

Remote control unit

Drain hose ø16

805

275

58.5

128.5

120

178

(3)

Narrow tube ø6.35 (1/4")

Center of tubing hole (2 places)

Wide tube ø9.52 (3/8")

785 10

182

61 23

110

14.3

unit: mm

Indoor Unit MCAF124MR5IAA

MCAF184MR5IAA

Remote control unit

Drain hose ø16

805

285

Narrow tube ø6.35 (1/4")

Center of tubing hole (2 places)

Wide tube ø9.52 (3/8")

775 15

219

(3)

152

58.5

27.5

93.5

182

61 23

110

14.3

unit: mm

Indoor Unit MCAF244MR5IAA

174

Center of tubing hole (2 places)

Narrow tube ø6.35(1/4")

Wide tube ø12.7 (1/2")

228

135

330

1,140

Drain hose ø18

Remote control unit

182

61 23

110

14.3

unit: mm

MCAF244MR5IAA

MCAF94MR5IAA MCAF124MR5IAA MCAF184MR5IAA

5. PERFORMANCE DATA

5-1. Air Throw Distance Chart

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

Room air temp. : 20°C Fan speed : High

Heating

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

Room air temp. : 27°C Fan speed : High

Cooling

0123456789

: Flap angle 0° , : Axis air velocity 0° : Flap angle 30°, : Axis air velocity 30°

0123456789

: Flap angle 45° , : Axis air velocity 45° : Flap angle 60° , : Axis air velocity 60°

Indoor Unit MCAF94MR5IAA

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

Room air temp. : 20°C Fan speed : High

Heating

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

Room air temp. : 27°C Fan speed : High

Cooling

0123456789

: Flap angle 0° , : Axis air velocity 0° : Flap angle 30°, : Axis air velocity 30°

0123456789

: Flap angle 45° , : Axis air velocity 45° : Flap angle 60° , : Axis air velocity 60°

Indoor Unit MCAF124MR5IAA

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

Room air temp. : 20°C Fan speed : High

Heating

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

Room air temp. : 27°C Fan speed : High

Cooling

0123456789

: Flap angle 0° , : Axis air velocity 0° : Flap angle 30°, : Axis air velocity 30°

0123456789

: Flap angle 45° , : Axis air velocity 45° : Flap angle 60° , : Axis air velocity 60°

Indoor Unit MCAF184MR5IAA

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

Room air temp. : 20°C Fan speed : High

Heating

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

Room air temp. : 27°C Fan speed : High

Cooling

0123456789

: Flap angle 0° , : Axis air velocity 0° : Flap angle 30°, : Axis air velocity 30°

0123456789

: Flap angle 45° , : Axis air velocity 45° : Flap angle 60° , : Axis air velocity 60°

Indoor Unit MCAF244MR5IAA

6. ELECTRICAL DATA

6-1. Electrical Characteristics

Indoor Unit MCAF94MR5IAA

GRN /Y

BK BK

BK (ORG) BK (ORG)

GY GY GY GY GY GY

W(BK) GY GY

GY GY

R W

Control panel

Inter-unit cables

Terminal board

Display/ receiver panel

(GRN)

Fan motor

Flap motor

To heat exchanger

(W)

(GRN)

(R)

(W)

Room temperature sensor

Heat exchanger temperature sensor

Humidity sensor

BK: Black W: White R: Red GRN: Green Y: Yellow BL: Blue GY: Gray

To avoid electrical shock hazard, be sure to disconnect power before checking, servicing and/or cleaning any electrical parts.

WARNING

Control panel

Terminal board

Display/ receiver panel

(GRN)

Fan motor

Flap motor

(W)

(GRN)

(R)

(W)

BK: Black W: White R: Red GRN: Green Y: Yellow BL: Blue GY: Gray

Inter-unit cables

To heat exchanger

Room temperature sensor

Heat exchanger temperature sensor

GRN /Y

BK BK

W(BK) GY

GY GY GY

W GY GY GY GY GY GY

Humidity sensor

Indoor Unit MCAF124MR5IAA

MCAF184MR5IAA

To avoid electrical shock hazard, be sure to disconnect power before checking, servicing and/or cleaning any electrical parts.

WARNING

Indoor Unit MCAF244MR5IAA

Connector (WHT)

Connector (WHT) (WHT)

Connector (WHT) (GRN)

Capacitor

Fan motor

Trans-P

3P (WHT)

Trans-S

2P (WHT)

Lamp.1

5P (WHT)

Flap 1 5P (WHT)

Flap 2 5P (BLK)

R. IN 5P (BLK)

Lamp.2

5P (WHT)

HUM

2P (Red)

Room/Coil

4P (WHT)

SUP 5P (BLK)

Controller

Room thermistor

Coil thermistor

Humidity sensor

Flap motor (Upper)

Flap motor (Lower)

(WHT)

Power transformer

IND lamp assy

FM HH H M L LL

FLP

(BLK)

Terminal plate

From Outodoor Unit

BLK

YEL

ORG

VLT

WHT

GRY

BRN

PNK

PNK BRN GRY

WHT

VLT

ORG

YEL BLK

WHT

BLU BLU BLU

BLU

WHT

BLU BLU BLU

BLU

BLK

BLK BLK

BLK BLK BLK BLK

WHT GRY WHT GRY GRY GRY GRY

BRN

WHT

BLK

WHT

GRN/YEL

To avoid electrical shock hazard, be sure to disconnect power before checking, servicing and/or cleaning any electrical parts.

WARNING

Installation Site Selection

7-1. Indoor Unit

AVOID:

●

direct sunlight.

●

nearby heat sources that may affect performance of the unit.

●

areas where leakage of flammable gas may be expected.

●

placing or allowing any obstructions near the A/C inlet or outlet.

●

installing in rooms that contain instant-on (rapidstart) fluorescent lamps. (These may prevent the A/C from receiving signals.)

●

places where large amounts of oil mist exist.

●

installing in locations where there are devices that generate high-frequency emissions.

DO:

●

select an appropriate position from which every corner of the room can be uniformly cooled. (High on a wall is best.)

●

select a location that will hold the weight of the unit.

●

select a location where tubing and drain hose have the shortest run to the outside. (Fig. 1)

●

allow room for operation and maintenance as well as unrestricted air flow around the unit. (Fig. 2)

●

install the inter-unit cable more than 1 meter away from any antenna or power lines or connecting wires used for television, radio, telephone, security system, or intercom. Electrical noise from any of these sources may affect operation.

Drain hose

Indoor unit

Outside drainage

Fig. 1

Fig. 2

WARNING

To prevent abnormal heat generation and the possibility of fire, do not place obstacles, enclosures, and grilles in front of or surrounding the air conditioner in a way that may block air flow.

15 cm

min.

15 cm min.

Front View

7. INSTALLATION INSTRUCTIONS

●

install in a sturdy manner to avoid increased operating noise.

●

install the unit within the maximum elevation difference (H1, H2, H3, H4) above or below the outdoor unit and within a total tubing length (L1+L2, L1+L2+L3, L1+L2+L3+L4) from the outdoor unit as detailed in Table 1 and Fig. 3a.

Table 1

Max. Allowable Tubing Limit of Total Tubing Limit of Elevation

Model

Length per unit Length (L1+L2), (L1+L2+L3) Difference (H)

(Outdoor unit)

(m) or (L1+L2+L3+L4) (m) (m)

GRF194MR5IAA 25 35 (L1+L2) 10 GRF244MR5IAA 25 50 (L1+L2+L3) 10 GRF314MR5IAA 30 70 (L1+L2+L3+L4) 10

INDOOR UNIT (1)

INDOOR UNIT (4)

INDOOR UNIT (3)

INDOOR UNIT (2)

Tubing length (L1)

OUTDOOR UNIT

Elevation difference (H1)

Fig. 3a

Indoor unit

Floor level

Wall

Minimum height from floor level

1.5 m

Fig. 3b

For stable operation of the air conditioner, do not install wall-mounted type indoor units less than 1.5 m from floor level.

CAUTION

(1) Connecting indoor unit types (9- 12 - 18) for GRF194MR5IAA

φ6.35

φ9.52

Union φ12.7

φ9.52

(9-12 types)

Outdoor unit

Indoor unit

(18 type)

Flare φ9.52

Union φ12.7

φ12.7

Flare φ9.52

(φ9.52 → φ12.7)

(φ12.7 → φ9.52)

A joint for connecting tubes of different sizes

(More than 17 m)

(A)

φ6.35

φ9.52

(28 - 36 types)

Outdoor unit

Indoor unit

(50 type)

φ9.52

(Less than 17 m)

(B)

Note: It is not possible to connect the outdoor unit for 2 rooms to indoor unit type 70.

Fig. 4a

Fig. 4b

7-2. Connecting Indoor Units

(2) Connecting indoor unit types (9 - 12 - 18) for GRF244MR5IAA

Note: It is not possible to connect the outdoor unit for 3 rooms to indoor unit type 70.

φ6.35

φ9.52

Union φ12.7

φ9.52

(9-12 types)

Outdoor unit

Indoor unit

(9- 12 types)

(18 type)

Flare φ9.52

Union φ12.7

φ12.7

Flare φ9.52

(φ9.52 → φ12.7)

(φ12.7 → φ9.52)

A joint for connecting tubes of different sizes

(More than 17 m)

(A)

Fig. 4c

Fig. 4d

Fig. 4e

(3) Connecting indoor unit types (9 - 12 - 18 - 24) for GRF314MR5IAA

φ6.35

φ9.52

φ6.35

φ9.52

(9-12 types)

Outdoor unit

Indoor unit

(9-12 types)

(18 type)

(Less than 17 m)

(B)

φ6.35

φ9.52

Outdoor unit

Indoor unit

Union φ9.52

Flare φ12.7

φ12.7

(φ12.7 → φ9.52)

(9- 12 types)

(9 - 12 types)

(A) Connecting indoor unit types 28 to 36 at D

φ6.35

φ9.52

Outdoor unit

Indoor unit

Union φ9.52

Flare φ12.7

φ12.7

(φ12.7 → φ9.52)

( 9 - 12 types)

(50 type)

φ6.35

φ9.52

φ12.7

φ9.52

Outdoor unit

Indoor unit

φ12.7

( 9 - 12 types)

(18 type)

(D) Connecting indoor unit type 24 at D

Fig. 4h

Fig. 4g

Fig. 4f

φ6.35

φ9.52

φ12.7

φ9.52

Outdoor unit

Indoor unit

Union φ12.7

Flare φ9.52

φ12.7

(φ12.7 → φ9.52)

(9 -12 types)

(18 type)

(More than 17 m)

(B) Connecting indoor unit type 18 at D (Length of tube: more than 17 m)

7-3. Test Run

(1) Turn the indoor unit selector switch to the “ON”

position. (Fig. 5)

(2) With the remote controller, start heating or cooling

operation.

(3) Turn the selector switch to “TEST RUN.” (The

indicator lamp blinks during test run operation.)

(4) After the test run is completed, turn the selector

switch to “ON.” Operation stops, and remote controller control becomes possible.

●

If the OPERATION lamp only blinks or the outdoor unit does not start approximately 5 minutes after the start of the test run, perform self-diagnosis by switching to OFF. Follow the self-diagnosis procedure listed on the right inside of the grille. The combination of the 3 indicator lamps indicates

the condition of the system. (Fig. 6)

Fig. 5

Fig. 6

8. FUNCTIONS

8-1. Operation Functions

■ Functions of the main unit controller ■ SENSOR DRY

■ Automatic operation

1 OFF : • Used to stop the unit when the remote

(Self-diagnostics)

controller is unavailable.

• Used when service inspection is performed. 2 ON : • During normal operation: Starts operation

from the remote controller.

• Emergency operation: When the remote controller is unavailable, moving this switch from the OFF position to the ON position starts automatic operation.

3 TEST : • Used when operating performance are

checked.

• Used when pump-down is carried out.

(Operates at the rated frequency. At this

time, the main unit lamp flashes, and the remote controller signal cannot be received.)

4 DEMO : • This function is for shop displays. Ordinarily

it is not used.

• Used during servicing.

● Operating mode selection

When automatic operation is selected, the indoor and outdoor

temperature sensors function, and either HEAT, DRY, or COOL mode operation is selected automatically.

During automatic operation, the system adjusts the room

temperature and fan speed according to the conditions in the room, in order to maintain a comfortable room environment.

SENSOR DRY operation

• DRY operation is as shown in the figure below.

■ PAM-α control

• In order to further improve inverter performance, control is switched between PWM control at low operation speeds, and PAM control at high operation speeds, making the most effective use of power.

The compressor operation frequency varies depending on the

relative humidity.

The indoor fan operates with 1/f fluctuation.

The compressor operates at a low operating frequency. The indoor fan operates with 1/f fluctuation.

• Monitoring operation takes place when the room temperature is below 15°C.

• When the monitoring range is entered, the compressor stops, and the indoor fan operates at LL.

• If the remote controller is used to start automatic operation, a differing-mode check is performed if the operating modes are not the same.

● Desired-temperature memory

• The set temperature in the program can be changed as desired within the range of ±4°C. This temperature can then be stored. During automatic operation, press the temperature setting buttons to change the temperature.

• When multiple indoor units are connected and this unit is started while another indoor unit is operating, the operating mode is as shown in the table below.

Outdoor air temperature

Indoor temperature

DRY A

DRY B

Monitor

Operating mode

before change

HEAT

COOL

DRY

HEAT

DRY DRY

DRY

Multi

operating mode

Operating mode

after change

15°C

(Approx.)

22°C

20°C

18°C

27°C

24°C

Temperature

at which

operation

starts

(Range:

20 – 26°C)

COOL

mode

DRY

mode

HEAT mode

Conditions are monitored at all times when the room temperature is below 15°C.

Set

temperature

(standard)

Load

COOL zone A zone B zone

■ HIGH POWER

Raises the power but remains in the same operating mode. This function is set with the HIGH POWER button on the remote controller. (It is set regardless of the temperature and fan speed settings.)

● HIGH POWER operation from the remote controller

The unit operates at maximum output for 15 minutes,

regardless of the desired temperature.

The fan speed is 1 step above “High.”

■ Lamp colors

■ ON timer operation

Operation lamp

HEAT operation : Red DRY operation : Orange COOL operation : Green TIMER lamp : Green

■ ECONOMY

NOTE

• When HIGH POWER operation ends, the unit operates at low Hz for 5 minutes, regardless of the thermostat OFF conditions.

• When in DRY mode, operation is in the cooling zone.

• When in HEAT mode, defrosting does not occur during HIGH POWER operation.

• If HIGH POWER is set while defrosting is in progress, HIGH POWER operation begins after defrosting ends.

• HIGH POWER operation cannot be set from the remote controller when the unit is stopped.

• HIGH POWER operation and ECONOMY operation cannot be used at the same time. The function set last takes priority.

NOTE

This function does not operate if the ON timer standby time is

less than 30 minutes.

• Operation starts when the time set for the ON timer is reached. When a time is set, the TIMER lamp illuminates.

• The below comfort timer programming is performed. A comfort time is calculated from the set temperature and the room temperature, either 60 minutes prior or 30 minutes prior to the set ON timer time, and operation is started in advance of the set ON time. (The indoor fan speed is “Medium.”)

[COOL]

Indoor temperature – Set temperature = Temperature difference

[HEAT]

Set temperature – Indoor temperature = Temperature difference

■ OFF timer operation

• Operation stops when the time set for the OFF timer is reached.

When a time is set, the TIMER lamp illuminates.

■ Timer backup

• If the indoor unit is unable to receive the timer time-end signal when the ON or OFF time is reached, then timer time-end occurs according to the indoor unit backup timer within approximately 26 minutes.

• Operation stops if there are no operator controls for 25 hours or longer after unit operation switched from OFF to ON by use of ON timer operation.

Frequency

MAX

Start End

Time

15 min. 5 min.

• When ECONOMY operation is set, the temperature and fan speed settings will be adjusted automatically to allow comfortable sleep.

• When ECONOMY operation is set, “ mark” appears on the remote controller.

● COOL and DRY modes

• The indoor unit fan speed is automatically lowered for quiet operation.

• The temperature setting is raised by 1°C one hour after ECONOMY operation is set.

● HEAT mode

• The indoor unit and outdoor unit fan speeds are automatically lowered for quiet operation.

• The temperature setting is lowered by 3°C one hour after ECONOMY operation is set.

In addition, the temperature setting is lowered by 4°C after

two hours have passed.

Temperature difference (°C) Advance start time (min.)

12 < Temperature difference

6 < Temperature difference

9. TROUBLESHOOTING

■ Precautions before performing inspection or repair

NOTE

PROCEDURE

● After checking the self-diagnostics monitor, turn the power OFF before starting inspection or repair.

● High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). They retain an electrical charge

(charging voltage DC 280 V) even after the power is turned OFF, and some time is required for the charge to dissipate. Be careful not to touch any electrified parts before the controller LED (red) turns OFF.

If the outdoor controller is normal, approximately 30 seconds will be required for the charge to dissipate. However, allow at

least 5 minutes for the charge to dissipate if there is thought to be any trouble with the outdoor controller.

After inspection or repair is completed, be sure to move the operation switch to the DEMO position, turn the power ON, and

erase the diagnostics contents.

1: If the operation lamp flashes every 0.5 seconds immediately when the power is turned ON,

there is an external ROM (OTP data) failure on the indoor circuit board or ROM socket insertion problem, or the ROM has not been installed.

2: The failure mode is stored in memory even when the power is not ON. Follow the procedure

below to perform diagnostics.

Turn the power switch ON.

Move the operation selector on the main unit to OFF (self-diagnostics).

If there is a sensor failure or a protective function has activated, self-diagnostics lamps 1, 2, and 3 will illuminate in the

following pattern: 5 seconds flashing (illuminated) + 2 seconds OFF. (Buzzer sounds once while lamps are OFF.) Note: If there is no trouble, then self-diagnostics lamps 1, 2, and 3 do not illuminate, and the buzzer does not sound.

Diagnostics is completed when the buzzer sounds 3 beeps.

After inspection or repair is completed, be sure to move the operation selector to the DEMO position, turn the power ON, and

erase the diagnostics contents. Then move the selector to the OFF position and check that the diagnostics contents have been erased before using the unit.

■ Method of self-diagnostics

If the indoor unit operation lamp is flashing every 0.5 seconds, follow the procedure below to perform detailed trouble diagnostics.

Operation selector

Ordinarily, this switch should be in the ON position.

The OFF, TEST, and DEMO positions are used for inspection.

DEMO

TEST

OFF

Details of Self-Diagnostics

When the operation selector on the indoor unit is moved from the ON or TEST position to the OFF (Self-diagnostics) position, the indicator lamps on the indoor unit will flash (or remain ON) for 5 seconds and then turn OFF for 2 seconds (buzzer sounds once) to indicate the presence of a sensor failure or the activation of a protective function.

Self-diagnostics is completed when the buzzer sounds 3 beeps. If there is no trouble, the lamps do not flash (illuminate). Also note that the corresponding parts listed below may not be

present in some models.

NOTE : If the operation lamp continues to flash (orange) even when the indoor unit operation selector has been moved

to the OFF position, an indoor unit external ROM failure has occurred. (E14)

After inspection or repair is completed, be sure to move the operation selector to the DEMO position, turn the

power ON, and erase the diagnostics contents.

Indication on indoor unit

....

OFF

Timer Operation

Code Diagnostics item Diagnostics contents

S01

Room temperature sensor failure

1 Sensor open circuit or short circuit 2 Contact failure at connector or open circuit at terminal crimping location (short-circuit

detection only for the humidity sensor)

3 Indoor/outdoor circuit board failure

1 Sensor open circuit or short circuit 2 Contact failure at connector or open circuit at terminal crimping location 3 Outdoor circuit board failure

1 External ROM data failure 2 Outdoor circuit board failure

1 Outdoor circuit board failure 2 Outdoor power supply voltage failure

1 4-way valve failure 2 Outdoor circuit board failure

1 Service valve not opened. 2 No refrigerant

1 Open phase 2 Outdoor circuit board failure

1 Miswiring 2 AC power failure 3 Blown fuse 4 Power relay failure 5 Indoor or outdoor circuit board failure

1 Electric expansion valve failure 2 Capillaries blocked. 3 No gas 4 Continuous overload operation 5 Outdoor fan does not turn. 6 Outdoor circuit board failure

1 Miswiring 2 Blown fuse 3 Power relay failure 4 Open phase 5 Outdoor circuit board failure 6 Compressor failure

1 Instantaneous power outage 2 HIC or power Tr failure 3 Outdoor circuit board failure

1 Fan motor failure 2 Contact failure at connector 3 Outdoor circuit board failure

1 Indoor fan system failure 2 No refrigerant 3 Low-temperature operation

1 Fan motor failure 2 Contact failure at connector 3 Indoor circuit board failure

1 HIC or power Tr failure 2 Outdoor fan does not turn. 3 Instantaneous power outage 4 Service valve not opened. 5 Outdoor fan blocked. 6 Continuous overload operation 7 Compressor failure 8 Outdoor circuit board failure

Indoor heat exchanger sensor failure

Humidity sensor failure

• Compressor temperature sensor failure

• SH sensor failure

• Outdoor heat exchanger sensor failure

• Outdoor narrow tubing sensor failure

• Outdoor air temperature sensor failure

• Outdoor wide tubing sensor failure

Indoor/outdoor communications failure (serial communications)

Outdoor unit external ROM failure

Peak current cut-off

• HIC circuit failure

• Power Tr circuit failure

• PAM circuit failure

• Active circuit failure

• Outdoor system communications failure

• Outdoor Hi-pressure SW, OLR operation

• Outdoor power supply open phase, outdoor coil freezing

Compressor discharge overheat prevention

Indoor fan operating failure

No-refrigerant protection

DC compressor drive circuit failure

Outdoor AC fan operating failure

Freeze-prevention operation

• 4-way valve switching failure

• Indoor zero-cross failure

Outdoor electrical current sensor failure Outdoor circuit board failure

S02 S03

S04 S05 S06

S07 E01

E02

E03 E04

E05 E06 E07 E08

E09 E10

E11

E12

E13

....

Flashing

....

■ If the self-diagnostics function fails to operate

■ Checking the indoor unit

■ Checking the outdoor unit

■ Checking the serial communications

● Using the TEST/T-RUN terminals

Check the indoor unit.

Is the fuse blown?

ControlNo. Check items (unit operation)

Replace the controller.

Replace the circuit

board or the fuse.

• No indicators illuminate and the indoor fan does not turn.

• Check the power voltage.

T-RUN : Test run (compressor and fan motor turn ON.) TEST/MV : Compresses time to 1/60th (accelerates

operation by 60 times faster than normal). Fully opens the electric expansion valve.

Set operation selector of indoor unit to DEMO and start operation using the remote controller.

● If there are no problems with the above, then check the outdoor unit.

1 • The rated voltage must be present between inter-unit cables 1 and 2.

• Connect a 5 kΩ resistor between inter-unit cables 2 and 3. When the voltage at both ends is measured, approximately 12–15 V DC must be output and the needle must fluctuate once every 8 seconds.

In addition, insert an LED jig and check that the LED flickers once

every 8 seconds.

ControlNo. Check items (unit operation)

Short-circuit terminals 2 and 3 on the indoor unit 3P terminal block.

Initial self-

diagnostics

Probable location of malfunction

Short-circuit terminals 2 and 3 on

the indoor unit 3P terminal block.

Apply the rated voltage between outdoor unit terminals 1 and 2.

● If there are no problems with the above, then check the indoor unit.

● Turn the power OFF before performing short circuiting work.

● During the self-diagnostics check, the check results are the first indication when the operation switch is moved to OFF while the

indicators are flashing after power ON → DEMO (5 seconds) → ON.

● So that the check can be made quickly, indicators flash at first communication after power ON.

● Before performing the above checks, perform DEMO operation, and check that AC 220 V is output to terminals 1 and 2.

If it is not output, there is a failure related to the indoor unit power.

1 • The control panel LED (red) must illuminate.

Short-circuit the outdoor unit COM terminal to the T-RUN terminal.

2 • The compressor and fan motor must turn ON.

Normal

Blown

TEST/T-RUN terminals

TEST/MV T-RUN COM

→ Control 1

No change Indoor unit circuit board failure

Outdoor unit circuit board failure Failure (open circuit, contact failure, etc.)

in the inter-unit cable Indoor unit circuit board failure

Change: (1) and (3) illuminate, and (2) flashes.

(1) illuminate

Change: (1) and (3) illuminate, and (3) flashes.

Change: (1) and (3) illuminate, and (2) flashes.

Change: (1) illuminates

(1) and (3) illuminate,

and (2) flashes.

→ Control 2

An inverter A/C operates using pulse signal control and high frequencies. Therefore, it is susceptible to the effects of external noise, and is likely to cause electromagnetic interference with nearby wireless devices.

A noise filter is installed for ordinary use, preventing these problems. However, depending on the installation conditions, these effects may still occur. Please pay attention to the points listed below.

■ Noise malfunction

This refers to the application of high-frequency noise to the signal wires, resulting in abnormal signal pulses and malfunction.

Locations most susceptible to noise

1. Locations near broadcast stations where there are strong electromagnetic waves

2. Locations near amateur radio (short wave) stations

3. Locations near electronic sewing machines and arc-welding machines

Correction

(The fundamental concept is to make the

system less susceptible to noise.)

— Insulate for noise or

distance from the noise source. —

1. Use shielded wires.

2. Move unit away from the noise source.

Trouble

Either of the following trouble may occur.

1. The unit may stop suddenly during operation.

2. Indicator lamps may flicker.

■ Electromagnetic interference

This refers to the noise generated by high-speed switching of the microcomputer and compressor. This noise radiates through space and returns to electric wiring, affecting any wireless devices (televisions, radios, etc.) located nearby.

Locations most susceptible to noise

1. A television or radio is located near the A/C and A/C wiring.

2. The antenna cable for a television or radio is located close to the A/C and A/C wiring.

3. Locations where television and radio signals are weak.

Correction

1. Select a separate power source.

2. Keep the A/C and A/C wiring at least 1 meter away from wireless devices and antenna cables.

3. Change the wireless device's antenna to a highsensitivity antenna.

4. Change the antenna cable to a BS coaxial cable.

5. Use a noise filter (for the wireless device).

6. Use a signal booster.

Trouble

1. Noise appears in the television picture, or the picture is distorted.

2. Static occurs in the radio sound.

INSTRUCTION MANUAL

Wall Mounted Type Indoor Unit

APPENDIX

Features

This air conditioner is equipped with cooling, heating, and drying functions. Details on these functions are provided below; refer to these descriptions when using the air conditioner.

• Microprocessor Controlled Operation

The interior compartment of the remote control unit contains several features to facilitate automatic operation, easy logically displayed for easy use.

• Simple One-touch Wireless Remote Control

The remote control unit has several features to facilitate automatic operation.

• 24-Hour ON or OFF Timer

This timer can be set to automatically turn the unit on or off at 10 minutes intervals within a 24 hour period.

• 1-Hour OFF Timer

This timer can be set to automatically turn off the unit at any time after one hour.

• ECONOMY Mode

Pressing this button changes the setting of the room temperature thermostat, allowing you to set the temperature at whatever level that you find comfortable.

• Automatic and 3-step Fan Speed

Auto/High/Medium/Low

• Air Sweep Control

This function moves a flap up and down in the air outlet, directing air in a sweeping motion around the room and providing comfort in every corner.

• High Power Cooling

When a cooling or drying operation is to be performed, the air conditioner operates for 15 minutes in the high power mode.

• Odor Reduction Mode

When a cooling or drying operation is to commence, the indoor fan motor is shut down for 40 seconds to minimize the odors which are produced when operation starts up.

• Mold Inhibiting Mode

Upon completion of a cooling or drying operation, the indoor fan motor operates in the fan mode for 30 seconds to prevent condensation inside the indoor unit and inhibit the growth of mold.

• Anti-Mold Filter

This unit is equipped with an anti-mold filter that inhibits the growth of mold and bacteria.

• Air Clean Filter

An air filter that uses antibacterial filter to eliminate unpleasant odors and clean the air.

OI-563-02EG

Contents

Page

Features ........................................................................................................... 2

Product Information ........................................................................................ 3

Alert Symbols ..................................................................................................3

Installation Location ........................................................................................ 4

Electrical Requirements .................................................................................. 4

Safety Instructions .......................................................................................... 4

Names of Parts ................................................................................................ 5

Using the Remote Control Unit .................................................................... 11

Operation with the Remote Control Unit .................................................... 12

1. Automatic Operation ....................................................................... 12

2. Manual Operation ............................................................................ 13

3. Adjusting the Fan Speed ................................................................. 15

4. ECONOMY Mode ............................................................................. 15

Special Remarks ............................................................................................ 17

Setting the Timer ........................................................................................... 18

Setting the 1-Hour OFF Timer ....................................................................... 21

Setting the HIGH POWER Operation............................................................ 21

Tips for Energy Saving ................................................................................. 22

Adjusting the Airflow Direction.................................................................... 23

Operation without the Remote Control Unit ............................................... 24

Care and Cleaning ......................................................................................... 24

Troubleshooting ............................................................................................ 27

Operating Range ........................................................................................... 27

Product Information

If you have problems or questions concerning your Air Conditioner, you will need the following information. Model and serial numbers are on the nameplate on the bottom of the cabinet.

Model No. ______________________ Serial No. _________________________

Date of purchase ____________________________________________________

Dealer’s address ____________________________________________________

Phone number_____________________

DECLARATION OF CONFORMITY

This product is marked «

» as it satisfies EEC Directive No. 89/336/ EEC, 73/23/EEC and 93/68/EEC. This declaration will become void in case of mis-usage and/or from non observance though partial of Manufacturer’s installation and/or operating instructions.

Alert Symbols

The following symbols used in this manual, alert you to potentially dangerous conditions to users, service personnel or the appliance:

This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death.

This symbol refers to a hazard or unsafe practice which can result in personal injury or product or property damage.

CAUTION

OI-563-03EG

Installation Location

• We recommend that this air conditioner be installed properly by

qualified installation technicians in accordance with the Installation Instructions provided with the unit.

• Before installation, check that the voltage of the electric supply in your

home or office is the same as the voltage shown on the nameplate.

• Do not install this air conditioner where there are fumes or flammable gases, or in an extremely humid space such as a greenhouse.

• Do not install the air conditioner where excessively high heatgenerating objects are placed.

Avoid: To protect the air conditioner from heavy corrosion, avoid installing the

outdoor unit where salty sea water can splash directly onto it or in sulphurous air near a spa.

Electrical Requirements

1. All wiring must conform to the local electrical codes. Consult your

dealer or a qualified electrician for details.

2. Each unit must be properly grounded with a ground (or earth) wire or

through the supply wiring.

3. Wiring must be done by a qualified electrician.

Safety Instructions

• Read this Instruction Manual carefully before using this air

conditioner. If you still have any difficulties or problems, consult your dealer for help.

• This air conditioner is designed to give you comfortable room conditions. Use this only for its intended purpose as described in this Instruction Manual.

• Never use or store gasoline or other flammable vapor or liquid near the air conditioner – it is very dangerous.

• This air conditioner has no ventilator for intaking fresh air from outdoors. You must open doors or windows frequently when you use gas or oil heating appliances in the same room, which consume a lot of oxygen from the air. Otherwise there is a risk of suffocation in an extreme case.

• Do not turn the air conditioner on and off from the power mains switch. Use the ON/OFF operation button.

• Do not stick anything into the air outlet of the outdoor unit. This is dangerous because the fan is rotating at high speed.

• Do not let children play with the air conditioner.

• Do not cool or heat the room too much if babies or invalids are

present.

CAUTION

OI-563-04EG

Names of Parts

Air intakes

INDOOR UNIT

Air outlet

Remote control unit

Drain hose

Refrigerant tubes

OUTDOOR UNIT

Air outlet

NOTE

This illustration is based on the external view of a standard model. Consequently, the shape may differ from that of the air conditioner which you have selected.

This air conditioner consists of an indoor unit and an outdoor unit. You can control the air conditioner with the remote control unit.

Air Intake Air from the room is drawn into this section and passes through air

filters which remove dust.

Air Outlet Conditioned air is blown out of the air conditioner through the air

outlet.

Remote Control Unit The wireless remote control unit controls power ON/OFF, operation

mode selection, temperature, fan speed, timer setting, and air sweeping.

Refrigerant Tubes The indoor and outdoor units are connected by copper tubes

through which refrigerant gas flows.

Drain Hose Moisture in the room condenses and drains off through this hose.

Outdoor (Condensing) Unit The outdoor unit contains the compressor, fan motor, heat

exchanger coil, and other electrical components.

OI-563-05EG

Unit Display and Operation Selector

IMPORTANT

Avoid using radio equipment such as mobile phone near (within 1 m) the remote control receiver. Some radio equipment may cause malfunction of the unit.

If the trouble happens, disconnect power and restart the air conditioner after a few minutes.

REMOTE CONTROL This section picks up infrared signals from the remote control unit

receiver (transmitter).

Operation selector

ON position This position is for operating the air conditioner with the wireless

remote control unit. Set the selector normally in this position.

OFF position Switch the selector to the OFF position if you are not going to use the

air conditioner for a few days or longer.

WARNING The OFF position does not disconnect the power. Use the main power

switch to turn off power completely.

TEST position This position is used only when servicing the air conditioner.

CAUTION Do not set at the TEST position for normal operation.

DEMO position This position is used only when setting address of the remote control

unit.

OPERATION lamp This lamp lights when the system is in the continuous AUTO (red,

orange or green), HEAT (red), DRY (orange) and COOL (green) mode.

TIMER lamp This lamp lights when the system is being controlled by the timer.

SERVICE lamp When a fault occurs in the air conditioner, this lamp turns on or flashes

in combination with the other two lamps to indicate the type of fault.

OI-563-06EG

MCAF94/124/184MR5IAA

INDOOR UNIT

Operation selector

SERVICE lamp

TIMER lamp

OPERATION lamp

REMOTE CONTROL recelver

TIMER lamp

OPERATION lamp

MCAF244MR5IAA

INDOOR UNIT

Operation selector

(5) ECONOMY ..............................

(6) High power operation ...........

(7) Flap indication

Auto. flap indication..............

Flap angle indication .............

Sweep indication....................

(8) Fan speed

Automatic operation .............

HIGH .......................................

MEDIUM .................................

LOW ........................................

(1) Operation mode

AUTO ......................................

HEAT.......................................

DOUBLE SENSOR DRY .........

COOL ......................................

(2) Confirmation of

transmission ..........................

(3) Set temperature

30 C

When set to 28 C

.........

Current temperature

indication ......................

(4) Timer

ON Timer ...............................

OFF Timer ..............................

1-hour OFF Timer ...................

Remote Control Unit (Display)

Displayed when indoor

unit sensor is in use

Displayed when setting

timer

Displayed when transmitting data

Displayed when setting temperature

Symbols

Displayed when setting temperature in automatic operation

OI-563-07EG

NOTE

The illustration above pictures the remote control unit after the cover has been lowered and removed.

Transmitter When you press the buttons on the remote control unit, the

mark appears in the display to transmit the setting changes to the receiver in the air conditioner.

Sensor A temperature sensor inside the remote control unit senses the room

temperature.

Display Information on the operating conditions is displayed while the remote

control unit is switched on. If the unit is turned off, only the mode that was set previously is still displayed.

HIGH POWER button : When you press this button, the current operation mode is set to the

HIGH POWER mode, and the unit is operated in this mode for 15 minutes.

ON/OFF operation button

This button is for turning the air conditioner on and off.

: When you press this button, regardless of whether the unit is

operating or stopping, the unit operates for one hour and then shuts down.

Press the

button to increase the set temperature.

Press the

button to reduce the set temperature.

For details, see Automatic operation and Manual operation.

Remote Control Unit

Temperature setting

buttons (TEMP.)

1 HR. TIMER button

(1-HOUR OFF TIMER)

Sensor

Transmitter

Display

1 HR. TIMER button

HIGH POWER button

OFF TIME setting button

ON TIME setting button

Return button

Advance button

SET button

CANCEL button

ACL button

Battery compartment (Pull off the cover to expose the batteries.)

CLOCK button

ECONOMY button

MODE selector button

FLAP button

ADDRESS switch

(Cover closed)

ON/OFF operation button

Temperature setting buttons (TEMP.)

FAN SPEED selector button

A/C SENSOR button

Model No.: RCS-3MVHPS4E

OI-563-08EG

(1) (2) (3) (4) (5) (6) (7) (8)

Remote Control Unit (continued)

No display : The timer does not operate.

: The air conditioner stops at the set time.

: The air conditioner starts at the set time.

: The air conditioner stops and starts, or starts and stops, at

the set times every day. For details, see “Setting the Timer”.

ECONOMY button For details, see “ECONOMY Mode”. When you press this button in the

HEAT, DRY or COOL mode, the mark appears in the display, and the remote control unit will automatically adjust the set temperature to save energy.

MODE selector button Use this button to select AUTO, HEAT, DRY or COOL mode.

(AUTO)

: When this setting is selected, the air conditioner calculates the

difference between the outdoor temperature and the room temperature and automatically switches to the “COOL”, “DRY” or “HEAT” mode as appropriate.

(HEAT)

: The air conditioner makes the room warmer.

(DRY)

: The air conditioner reduces the humidity in the room.

(COOL)

: The air conditioner makes the room cooler.

FLAP button Press this button either to select the setting of the airflow direction to

the auto. flap in each mode or one of the six possible positions manually or to select the sweep function which moves the flap up and down automatically.

: Auto flap setting: If selected in a heating operation, the flap is set

to position (3) in the following chart. If selected in a cooling or dry operation, the flap is set at position (7) in the following chart.

: The airflow direction can be set manually. (six positions)

: The flap moves up and down automatically.

NOTE When you press the FLAP button, the air flow direction will be changed

one by one as follows.

FAN SPEED selector button : The air conditioner automatically decides the fan speeds.

: High fan speed

: Medium fan speed

: Low fan speed

ACL button (ALL CLEAR) Puts the remote control unit into pre-operation status. Always press this

button after replacing the batteries.

ON TIME/OFF TIME

setting buttons

Swing

OI-563-09EG

ADDRESS switch • Change the address switch to prevent mixing of signals from remote

control units when two Sanyo air conditioners are installed next to each other. Normally, the address switch is set to A. When switching the adress, take the steps listed below. Contact your dealer where you made the purchase if 3 or more Sanyo air conditioners are to be operated.

1 Break off the address switching tabs on the remote control unit, and

set the address switch to B.

2 Insert batteries into the remote control unit, press the ACL button,

and attach the cover.

3 Open the intake grille of the indoor unit, and set the operation knob

to the DEMO position.

4 Press the ON/OFF operation button on the remote control unit, and

check that a receiving tone (beep) is heard from the indoor unit.

5 Set the operation selector to the ON position, and close the intake

grille.

6 Operate the remote control unit, and check that a receiving tone

(beep) is heard from the indoor unit.

• Normally, the tabs on the remote control unit should not be bent.

A/C SENSOR button When you press this button (use a small-tipped object such as a

ballpoint pen), the

mark will appear at the display. And the room temperature is detected by the sensor which is built into the indoor unit and the air conditioner is controlled accordingly.

NOTE If the remote control is located near a heat source, such as a space heater

or in direct sunlight, press the A/C SENSOR button to switch to the sensor on the indoor unit.

NOTE The remote control unit sends the temperature signal to the air conditioner regularly at five minute

intervals. If the signal from the remote control unit stops for more than ten minutes due to the loss of the remote control unit or other trouble, the air conditioner will switch to the temperature sensor which is built into the indoor unit and control the room temperature. In these cases, the temperature around the remote control unit may differ from the temperature detected at the air conditioner’s position.

OI-563-10EG

Remote Control Unit (continued)

ACL button

Using the Remote Control Unit

How to Install Batteries

1. Slide the cover in the direction indicated by the arrow

and remove it.

2. Install two AAA alkaline batteries. Make sure the

batteries point in the direction marked in the battery compartment.

3. Use a thin object such as the tip of a pen to press the

ACL button.

NOTE • The batteries last about six months, depending on how much you

use the remote control unit. Replace the batteries when the remote control unit’s display fails to indicate, or when the remote control cannot be used to change the air conditioner’s settings.

• Use two fresh leak-proof type-AAA alkaline batteries.

• In replacing batteries, follow the instructions as mentioned in the sub-section “How to Install Batteries”.

• If you do not use the remote control unit more than 1 month, take out the batteries.

How to Use the Remote

Control Unit

When using the remote control unit, always point the unit’s transmitter head directly at the air conditioner’s receiver.

Air conditioner (Indoor unit)

Remote control unit

Receiver

(Transmitter head)

OI-563-11EG

Cover

STEP 1 Press the MODE selector button and select (AUTO). STEP 2 Press the ON/OFF button and switch the air conditioner ON. STEP 3 Press the temperature setting buttons (TEMP.).

The air conditioner starts operating after automatically selecting the type of operation —whether heating, drying (dehumidifying) or cooling—that suits the conditions in the room, and automatically adjusting the temperature, fan speed and airflow direction.

Each time one of the temperature setting buttons (TEMP.) is pressed, the temperature is changed by 1°C.

The temperature can be changed from +4°C (higher) to –4°C (lower) from the standard temperature setting. (The upper limit during cooling is 30°C.)

Operation with the Remote Control Unit

1. Automatic Operation

Standard temperature settings during automatic operation

Type of operation Standard temperature setting

Heating 24°C

Drying 20°C to 26°C range

(The exact temperature depends on the prevailing temperature

when the unit starts operating.)

Cooling 27°C

STEP 2

STEP 3

STEP 1

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13OI-563-13EG

As shown in the figure below, the automatic selection of the operating modes is determined by the indoor temperature and outside air temperature.

• When multiple indoor units are used and units in other rooms are already operating, they will be set to the same type of operation as the operating indoor units.

• The temperature, airflow direction and fan speed are set automatically but the airflow direction and fan speed can be changed to suit your individual preference. It will take a few seconds for the fan speed to be switched.

2. Manual Operation

NOTE Check that the circuit breaker on the power panel is turned on and that

the operation selector of the indoor unit is in the ON position.

STEP 1

STEP 5

STEP 2

STEP 3

STEP 4

Indoor temperature

Outside air

temperature

Cooling

operation

Drying operation

Temperature setting

(standard)

Approx.

15°C

Heating operation

Approx.

22°C

Approx.

27°C

Approx.

22°C

Approx.

20°C

Approx.

18°C

27°C

20°C to 26°C

24°C

Operation with the Remote Control Unit (continued)

14 OI-563-14EG

Operation with the Remote Control Unit (continued)

• After the cooling or drying operation has stopped, the indoor fan runs for about 30 seconds to dry out the inside of the air conditioner. (The operating lamps remain off.) The flap closes after the fan has stopped.

• If the room temperature rises above the temperature setting during a drying operation, the unit performs similar operation to cooling, and when the room temperature approaches the temperature setting, it performs the humidity-priority drying operation.

• The drying operation does not serve to raise the room temperature. (When the outside air temperature is low or when the heat quantity inside the room is low, the room temperature will not rise.)

• A change made to the temperature setting remains stored in the memory even after operation has stopped.

• If the temperature setting is lowered during a drying operation so that the unit has switched to a cooling operation, the outdoor unit shuts down for 3 minutes. (This happens only when one indoor unit is used.)

• When the unit is running in the drying operation mode while the temperature setting is higher than the room temperature, the humidity may not be reduced. In a case like this, select a temperature setting which is lower than the current room temperature, and perform the drying operation.

NOTE This appliance has a built-in 3-minute time delay circuit to ensure reliable

operation. When the operation button is pressed, the compressor will start running within three minutes. In the event of power failure, the unit will stop.

STEP 1 Press the MODE selector button and select the desired

mode.

For heating operation → For dehumidifying operation → For cooling operation →

STEP 2 To start the air conditioner, press the ON/OFF operation

button.

STEP 3 Press the temperature setting buttons to change the

temperature setting to the desired temperature.

Adjustable temperature range:

30 °C max. 16 °C min.

NOTE • Room temperature control works to ensure that the

temperature stabilizes within a range of ±2 °C of the temperature setting. For this reason, the value displayed on the remote control unit may differ from the actual temperature setting. Before the temperature stabilizes, this difference may exceed the ±2 °C range.

• The operating lamp of the indoor unit lights in one of the colors shown below.

STEP 4 Set the FAN SPEED selector button to the setting you want.

(Refer to “Adjusting the Airflow Direction” on page 23.)

STEP 5 Press the FLAP button and set the airflow direction as

desired. (Refer to “Adjusting the Airflow Direction” on page 23.)

To stop the air conditioner, press the ON/OFF operation button again.

Heating Red

Operating lamp Drying Orange

Cooling Green

3. Adjusting the Fan Speed

A. Automatic

Simply set the FAN SPEED selector button to the

position.

B. Manual If you want to adjust fan speed manually during operation, just set the

FAN SPEED selector button as desired. [

, , or ]

4. ECONOMY Mode

The ECONOMY Mode is used for saving energy.

Press the ECONOMY button while the air conditioner is operating. The

mark appears in the display.

To cancel the ECONOMY function, press the ECONOMY button again.

Operation with the Remote Control Unit (continued)

OI-563-15EG

When the ECONOMY mode is selected, the air conditioner automatically raises the temperature setting 1 °C when 60 minutes have passed after the selection was made. This enables you to save energy without sacrificing comfort. This function is convenient when gentle cooling is needed.

When the ECONOMY mode is selected, the air conditioner automatically lowers the temperature setting 3 °C when 60 minutes have passed after the selection was made, and then another 4 °C after another 2 hours have passed, regardless of the indoor temperature when ECONOMY was selected. This enables you to save energy without sacrificing comfort. This function is convenient when gentle heating is needed.

NOTE The temperature does not shift in the Auto mode during ECONOMY

mode.

B. In Heating Mode:

(

)

Operation with the Remote Control Unit (continued)

A. In Cooling and DRY

Mode: ( and )

OI-563-16EG

Setting temperature

Room temperature

Time

1°C

Setting temperature

Room temperature

Time

3°C

4°C

Special Remarks

Power failure

during operation

• In the event of power failure, the unit will stop. Though the power is resumed, the unit will not restart automatically. Press the ON/OFF operation button and restart the unit again.

Clicking Sound

Clicking sound is heard

from the air conditioner

• In heating or cooling operation, any plastic parts may expand or shrink due to a sudden temperature change. In this event, a clicking sound may occur. This is normal, and the sound will soon disappear.

Remote Control Unit • The remote control unit sends the setting condition to the air

conditioner regularly at five minute intervals.

OI-563-17EG

1. How to set the present time

Setting the Timer

(Example) To set to 10:30 pm.

Operation

1. Press the CLOCK button three times.

2. Press the Advance, Return (

, ) button until PM 10:30 is displayed.

3. Press the CLOCK button again.

Indication

The time indication alone blinks.

The time can be set in 1-minute increments. Holding down the button advances the time rapidly in 10-minute increments.

This completes the setting of the current time.

2. How to set the OFF time (Example) To stop the air conditioner at 11:00 am.

1. Press the OFF TIME setting button once.

2. Press the Advance, Return (

, ) button until AM 11:00 is displayed.

3. Press the SET button.

The timer

indication blinks

and present OFF time is shown.

The time can be set in 10-minute increments. Holding down the button advances the time rapidly in 10-minute increments.

The timer

indication stops blinking and the present time is displayed.

OI-563-18EG

3. How to set the ON time (Example) To start operation at 7:10 am.

Setting the Timer (continued)

NOTE • The timer can be programmed while the unit is operating or while it is

stopped.

• A timer program is canceled after the timer has operated. So the timer should be set every time programming operation is to be performed.

• The airflow direction, fan speed and temperature setting can be changed after a timer program has been set even when the unit is stopped. Even when operation is stopped during an ON timer program, the unit will start operating when the set time is reached provided that the program is not canceled.

• As a safeguard to prevent you forgetting to turn off the air conditioner, the unit’s operation will be stopped if the remote control unit has not been operated for at least 25 hours after the ON timer starts.

• When the ON timer is used, the temperature setting may not be reached by the set time depending on the size and conditions in the room.

To cancel a timer program • Press the CANCEL button.

• When either an ON or OFF timer is to be canceled, press the button corresponding to the timer whose program is to be canceled, and then press the CANCEL button.

Operation

1. Press the ON TIME setting button once.

2. Press the Advance, Return (

, ) button until AM 7:10 is displayed.

3. Press the SET button.

Indication

The timer

indication blinks

and present ON time is shown.

The time can be set in 10-minute increments. Holding down the button advances the time rapidly in 10-minute increments.

The timer

indication stops blinking and the present time is displayed.

NOTE ON timer (comfort programming)

The unit starts operating automatically to attempt to change the temperature to the desired level by the set time. (The unit operates at the low fan speed from up to 60 minutes prior to the set time.)

OFF timer

The unit stops operating at the set time.

OI-563-19EG

(Example) To start operation at 7:10 am. and stop the air conditioner at 11:00 am.

Setting the Timer (continued)

4. How to set DAILY ON/ OFF REPEAT timer

7:10 am. 11:00 am.

ON OFF

Operation

1. Set the timer ON/OFF times as shown in 2-1, 2, 3 and 3-1, 2, 3.

Indication

The present time 10:30 pm. and

are displayed.

OFF time

Present time

ON time

Daily ON/OFF

NOTE • The ON/OFF combination timer uses the current time as the

reference, and it is activated starting from whichever set time comes first.

• With the ON/OFF combination timer, the settings are repeated every day.

• You can check the timer ON/OFF times after you have set them by pressing the ON TIME and OFF TIME setting buttons.

OI-563-20EG

Setting the 1-Hour OFF Timer

1. 1-Hour OFF Timer This function causes the unit to operate for one hour and then stop,

regardless of whether the unit is on or off when this button is pressed.

The indicator in the display indicates that this function is operating.

Setting the 1-Hour OFF Timer:

Regardless of whether the unit is operating or stopped, press the 1 HR. TIMER button.

appears in the display.

Cancelling the 1-Hour OFF Timer:

Press the ON/OFF operation button to turn the unit off, wait for the unit to stop operating, and then press the ON/OFF operation button again. The 1Hour Timer function is now cancelled and the unit operates normally.

NOTE If, while the 1-Hour Timer function is operating, the 1 HR. TIMER button is

pressed once to cancel the function and then again, the unit continues to operate for one hour from that point in time and then stops.

• The 1 Hour OFF Timer setting is given priority over the DAILY ON/OFF REPEAT setting.

• It is not possible to use the OFF Timer and 1-Hour OFF Timer together. Whichever function is set last takes precedence. If the 1 HR. TIMER button is pressed while the TIMER OFF function operates, the OFF Timer is cancelled and the unit will stop operating one hour later.

2. Operation together with the DAILY ON/ OFF REPEAT Timer

Setting the HIGH POWER Operation

1. HIGH POWER Operation This function causes the unit to operate at HIGH POWER in the present

mode of operation for 15 minutes when this button is pressed while the unit is on. The

indicator on the display indicates that this function is

operating.

Canceling the HIGH POWER operation

HIGH POWER operation is canceled by pressing the ON/OFF operation button, HIGH POWER button (when it is pressed again) or MODE selector button, when the OFF time or HIGH POWER time setting is reached or when the ECONOMY mode operation is performed. The 15-minute timer is also cleared.

It is not possible to use the HIGH POWER operation and ECONOMY mode operation together. Whichever function is set last takes precedence. If the HIGH POWER button is pressed while the ECONOMY mode is operating, the ECONOMY mode operation is cancelled and the unit will change to the HIGH POWER operation.

2. Operation together with the ECONOMY mode

OI-563-21EG

NOTE

During a heating operation

• The room is heated for 15 minutes by warm air which has a slightly higher temperature than usual.

• When the HIGH POWER button is pressed during a defrosting operation, the unit enters the HIGH POWER operating mode upon completion of the defrosting operation.

Concerning HIGH POWER

operations

Setting the HIGH POWER Operation (continued)

When operating one

indoor unit

During a cooling operation

• The room is cooled down for 15 minutes by cooling at a slightly lower temperature than usual, and the fan speed is set to the highest fan speed setting.

During a drying operation

• If the room temperature is higher than the temperature setting, the room is cooled down for 15 minutes by cooling at a slightly lower temperature than usual, and if it is close to the temperature setting, the drying operation is performed, and the fan speed is set to the highest fan speed setting.

During a cooling or drying operation

• The room is cooled down for 15 minutes by cooling at a slightly lower temperature than usual, and the fan speed is set to the highest fan speed setting.

• When the unit is used continuously for 15 minutes, the temperature setting has been reached during a cooling or heating operation or the humidity setting has been reached during a drying operation (which is only when one indoor unit is operated), operation will continue for the next 5 minutes at a reduced power level, after which the regular operation is restored. If the setting is not reached in either case, regular operation is restored immediately.

• After HIGH POWER operation has finished or when a HIGH POWER operation has been canceled on the way and then reinstated, regular operation is performed for about 5 minutes to protect the unit, and then the HIGH POWER operation is performed.

• During HIGH POWER operations, the room temperature may not coincide with the temperature setting.

When operating multiple

indoor units

Tips for Energy Saving

Do not • Block the air intake and outlet of the unit. If they are obstructed, the

unit will not work well, and may be damaged.

• Let direct sunlight into the room. Use sunshades, blinds or curtains. If the walls and ceiling of the room are warmed by the sun, it will take longer to cool the room.

Do • Always try to keep the air filter clean. (Refer to “Care and Cleaning”.)

A clogged filter will impair the performance of the unit.

• To prevent conditioned air from escaping, keep windows, doors and any other openings closed.

OI-563-22EG

Adjusting the Airflow Direction

1. Horizontal The horizontal airflow can be adjusted by moving the vertical vanes with

your hands to the left or right.

When the humidity is high, the vertical vanes should be in the front position during the cooling or dehumidifying operation. If the vertical vanes are positioned all of the way to the right or left, condensation may begin to form around the air vent and drip down.

2. Vertical The vertical airflow can be adjusted by moving the flap with the remote

control unit. Do not move the flap with your hands. Confirm that the remote control unit has been turned on. Use the FLAP button to set either the sweep function or one of the six airflow direction settings.

CAUTION

A. Sweep function

The flap starts moving up and down to deliver air over the sweep range.

B. Setting the airflow manually

Referring to the above illustration, use the FLAP button to set the airflow direction within the range used during the heating, cooling, or dehumidifying operation.

NOTE • The flap automatically closes when the unit is off.

• During the heating operation, the fan speed will be very low and the

flap will be in the horizontal position (position 6) until the air being blown out of the unit begins to warm. Once the air warms up, the flap position and fan speed change to the settings specified with the remote control.

• Use the FLAP button on the remote control to adjust the position of the flap. If you move the flap by hand, the factual flap position and the flap position on the remote control may no longer match. If this should happen, shut off the unit, wait for the flap to close, and then turn on the unit again; the flap position will now be normal again.

• Do not have the flap pointed down during cooling and drying operation. Condensation may begin to form around the air vent and drip down.

HEAT

SWEEP

COOL

and

DRY

CAUTION

OI-563-23EG

Clean the casing and grille of the indoor unit with a vacuum cleaner brush, or wipe them with a clean, soft cloth.

If these parts are stained, use a clean cloth moistened with a mild liquid detergent. When cleaning the grille, be careful not to force the vanes out of place.

1. Never use solvents, or harsh chemicals when cleaning the indoor unit. Do not wipe the plastic casing using very hot water.

2. Some metal edges and the fins are sharp and may cause injury if handled improperly; be especially careful when you clean these parts.

3. The internal coil and other components of the outdoor unit must be cleaned every year. Consult your dealer or service center.

Operation without the Remote Control Unit

If you have lost the remote control unit or it has trouble, follow the steps below.

1. When the air conditioner is not running If you want to turn on the air conditioner, switch the operation selector to the OFF position, and then to the ON position.

NOTE The set temperature and fan speed are automatically set at the

last selection before stopping.

2. When the air conditioner is running If you want to turn off the air conditioner, switch the operation selector to the OFF position.

Care and Cleaning

1. For safety, be sure to turn the air conditioner off and also to

disconnect the power before cleaning.

2. Do not pour water on the indoor unit to clean it. This will damage

the internal components and cause an electric shock hazard.

INDOOR UNIT

Operation

selector

CAUTION

Casing and Grille

(Indoor Unit)

OI-563-24EG

Care and Cleaning (continued)

Anti-Mold Filter

The anti-mold filter behind the air intake grille should be checked and cleaned at least once every two weeks.

How to remove the

anti-mold filter

1. Grasp both ends

of the air intake grille and pull it out and up.

2. Push the anti-

mold filter up slightly, and then pull it down.

Cleaning

Use a vacuum cleaner to remove light dust. If there is sticky dust on the filter, wash the filter in lukewarm, soapy water, rinse it in clean water, and dry it.

Air intake grille

Anti-mold filter

How to replace the

anti-mold filter

1. With the “FRONT” mark

facing you, slide the antimold filter up into the unit and then lower the handle into the groove on the unit.

2. After installing the anti-mold

filter, press the locations marked by the arrows (

)

and close the air intake grille.

Air intake grille

Anti-mold filter

Insert into the groove on the unit.

OI-563-25EG

The air cleaning filter needs to be installed behind the anti-mold filter.

1. Remove the anti-mold

filter.

2. Install the air cleaning

filter in the position shown in the figure.

3. Reinstall the anti-mold

filter.

NOTE • In general, the filter should be replaced once every three months.

• Dirty air clean filters cannot be washed and reused. Purchase a replacement filter at your local dealer.

• Wipe clean using a soft, dry cloth.

• To remove stubborn dirt, moisten a cloth in warm water no hotter than 40 °C, wring thoroughly, and then wipe.

• The air intake grille can be removed in order to wash it with water.

• With the air intake grille open all the way, grip both arms with your hands and pull toward you to remove. To remount, hold the air intake grille roughly horizontal and push it in until the arm shafts fit into the indentations in the main unit, then fit the grille into place.

Care and Cleaning (continued)

CAUTION

The air cleaning filter removes dust and dirt from the air, and reduces odors and smoke from tobacco.

This air cleaning filter cannot remove harmful gases or vapors nor ventilate air in the room. You must open doors or windows frequently when you use gas or oil heating appliances. Otherwise there is a risk of suffocation in extreme cases.

How to install the air

cleaning filter

Air cleaning filter

Cleaning the main unit and

remote control unit

Removing and remounting

the air intake grille

Air intake grille

Arm

When using a footstool or the like, be careful not to let it tip over.

Washing the grille

with water

• Clean the grille gently using a soft sponge, or the like. Then wipe away any remaining moisture.

• Neutral detergent may be used to remove stubborn dirt. Then rinse thoroughly with water and wipe away any remaining moisture.

Air Cleaning Filter

OI-563-26EG

Troubleshooting

If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or service center.

Trouble Possible Cause Remedy

Air conditioner does not run at all.

OPERATION lamp blinks and air conditioner does not operate.

Compressor runs but soon stops.

Poor cooling (or heating) performance.

Clicking sound is heard from the air conditioner.

OPERATION lamp lights but outdoor unit will not run.

Operating Range

The air conditioner is operable within the temperature ranges as listed below:

Temperature Indoor air temperature Outdoor air temperature

COOLING

Max. 32 °C DB / 23 °C WB 43 °C DB

Min. 19 °C DB / 14 °C WB 19 °C DB

HEATING

Max. 27 °C DB / 19 °C WB 24 °C DB / 18 °C WB

Min. 16 °C DB / –WB — / –15 °C WB

1. Restore power.

2. Contact service center.

3. Consult your electrician or dealer.

4. Press the button again.

5. Replace batteries.

Contact service center.

Remove obstruction.

1. Clean air filter to improve airflow.

2. Eliminate heat source if possible.

3. Shut them to keep the heat (or cold) out.

4. Remove it to ensure good airflow.

5. Set the temperature lower (or higher).

6. (Consult your dealer or try to use a back-up heater.)

This is normal, and the sound will soon disappear.

1. Turn off the power then restart the air conditioner after 1 minute.

2. Consult your dealer.

1. Power failure.

2. Leakage circuit breaker tripped.

3. Line voltage is too low.

4. Operation button is OFF.

5. Batteries in remote control unit have run down.

Trouble in wiring system.

Obstruction in front of condenser coil.

1. Dirty or clogged air filter.

2. Heat source or many people in room.

3. Doors and/or windows are open.

4. Obstacle near air intake or air discharge port.

5. Thermostat is set too high for cooling (or too low for heating).

6. (Outdoor temperature is too low for heating.)

In heating or cooling operation, any plastic parts may expand or shrink due to a sudden temperature change. In this event, a clicking sound may occur.

1. The use of cellular phones near the air conditioner may cause disturbance to its normal operation.

OI-563-27EG

Technibel MCAF94MR5IAA, MCAF124MR5IAA, MCAF184MR5IAA, MCAF244MR5IAA Technical & Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual