Technibel MCAV180C5VAA, MCAV220C5VAA, GR180C7TAA, KPAV180C5TAA, KPAV220C5TAA Technical Data & Service Manual

TECHNICAL DATA & SERVICE MANUAL

Indoor Unit Outdoor Unit

MCAV180/220C5VAA GR180C7TAA

KPAV180/220C5TAA GR220C7TAA

SPLIT SYSTEM AIR CONDITIONER

GR180C7TAA

GR220C7TAA

KPAV180/220C5TAA

MCAV180/220C5VAA

0.8180.166.0 02/2001

i

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
units 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.

CAUTION

Table of Contents

Page

1 OPERATING RANGE 1
2 SPECIFICATIONS

2-1 Unit Specification 2
2-2 Major Components Specifications 6

2-3 Other Component Specifications 12
3 DIMENSIONAL DATA 16
4 REFRIGERANT FLOW DIAGRAM 20
5 PERFORMANCE DATA

5-1 Air Throw Distance Chart 21

5-2 Cooling Capacity 24
6 ELECTRICAL DATA

6-1 Electrical Characteristic 28

6-2 Electric Wiring Diagrams 30
7 INSTALLATION INSTRUCTION

7-1 Installation Site Selection 33
7-2 Remote Control Unit Installation Position 35
7-3 Recommended Wire Length and Diameter 36

8 FUNCTION

8-1 Room Temperature Control 37

8-2 Dry Operation 38

8-3 Freeze Prevention 38

9 TROUBLESHOOTING

9-1 Check before and after troubleshooting 39

9-2 Air Conditioner Does not operate 40
9-3 Some Parts of Air Conditioner does not operate 45
9-4 Air Conditioner operates, but abnormalities are observed 48
9-5 If a Sensor is defective 49

10 CHECKING ELECTRICAL COMPONENTS

10-1 Measure of insulation Resistance 50
10-2 Check Continuity of fuse on PCB Ass’y 51

10-3 Checking Motor Capacitor 51
11 DISASSEMBLY PROCEDURE FOR INDOOR UNIT

11-1 Removing air intake grille 52
11-2 Removing side panels 53
11-3 Access and removal of electrical component box 53
11-4 Removing flap motor 54
11-5 Removing evaporator 54
11-6 Removing fan and fan motor 56

1

1. OPERATING RANGE

Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.

Cooling

Maximum 32°C D.B. / 23°C W.B. 46°C D.B.

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

2

2. SPECIFICATIONS

2-1. Unit Specifications

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.

Outdoor air temperature 35°C D.B. / 24°C W.B.

Power Surce.......Voltage Rating 400V - 3N - 50Hz .. ....400 V

Control Circuit V 230 V 50 Hz

Cooling

Capacity

kW 4.9

BTU/h 17000

Air circulation (High) m

3

/h 760
Moisture removal (High) Liters/h 2.0
Available voltage range V 342 to 418
Running amperes A 4.0
Power input W 1960
Power factor % 80
C.O.P. W/W 2.5
Compressor locked rotor amperes A 21.5
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 Indoor / Outdoor 3 and Auto / 1(Hi,LO)

Airflow direction (Indoor)

Horizontal Manual

Vertical Auto
Air filter Washable
Compressor Rotary (Hermetic)
Refrigerant / Amount charged at shipment g R22/ 1405
Refrigerant control Capillary tube

Noise Power Level

Indoor – Hi / Me / Lo dB-A 55 / 51 / 49

Outdoor – Hi dB-A 64
Refrigerant tubing connections Flare type
Max. allowable tubing length at shipment m 7.5

Refrigerant tube

Narrow tube mm (in.) 6.35 (1/4)
diameter

Wide tube mm (in.) 12.7 (1/2)

Indoor Unit Outdoor Unit

Unit dimensions Height mm 285 630

Width mm 995 830

Depth mm 206 305
Package dimensions Height mm 276 713

Width mm 1,070 994

Depth mm 363 413

Weight Net

kg 12.0 52

Shipping

kg 15.0 57

Shipping volume m

3

0.11 0.29

Dimensions & Weight Features Electrical Rating Performance

Indoor Unit MCAV180C5VAA
Outdoor Unit GR180C7TAA

3

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.

Outdoor air temperature 35°C D.B. / 24°C W.B.

Power Source..... Voltage Rating 400V - 3N - 50Hz........ 400 V

Control Circuit 230 V 50 Hz

Cooling

Capacity

kW 6.0

BTU/h 20500

Air circulation (High) m

3

/h 830
Moisture removal (High) Liters/h 3.2
Available voltage range V 342 to 418
Running amperes A 4.6
Power input W 2500
Power factor % 84
C.O.P. W/W 2.40
Compressor locked rotor amperes A 28
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 Indoor / Outdoor 3 and Auto / Auto(Hi, Lo)

Airflow direction (Indoor)

Horizontal Manual

Vertical Auto
Air filter Washable
Compressor Rotary (Hermetic)
Refrigerant / Amount charged at shipment g R22 / 2380
Refrigerant control Capillary tube

Noise Power Level

Indoor – Hi / Me / Lo dB-A 58 / 55 /52

Outdoor – Hi dB-A 67
Refrigerant tubing connections Flare type
Max. allowable tubing length at shipment m 7.5

Refrigerant tube

Narrow tube mm (in.) 6.35 (1/4)
diameter

Wide tube mm (in.) 15.88(5/8)

Indoor Unit Outdoor Unit

Unit dimensions Height mm 285 835

Width mm 995 850

Depth mm 206 305
Package dimensions Height mm 276 913

Width mm 1,070 1000

Depth mm 363 400

Weight Net

kg 12.0 67.0

Shipping

kg 15.0 76.0

Shipping volume m

3

0.11 0.37

Dimensions & Weight Features Electrical Rating Performance

Indoor Unit MCAV220C5VAA
Outdoor Unit GR220C7TAA

Refrigerant tube kit/accessories Optional/Hanging wall bracket

4

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.

Outdoor air temperature 35°C D.B. / 24°C W.B.

Power Surce.......Voltage Rating 400V - 3N - 50Hz .. ....400 V

Control Circuit 230 V 50Hz

Cooling

Capacity

kW 4.9

BTU/h 17000

Air circulation (High) m

3

/h 800
Moisture removal (High) Liters/h 2.0
Available voltage range V 342 to 418
Running amperes A 4.0
Power input W 1960
Power factor % 80
C.O.P. W/W 2.50
Compressor locked rotor amperes 21.5
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 Indoor / Outdoor 3 and Auto / Auto(Hi, Lo)

Airflow direction (Indoor)

Horizontal Manual

Vertical Auto
Air filter Washable, Anti-Mold
Compressor Rotary (Hermetic)
Refrigerant / Amount charged at shipment g R22/ 1405
Refrigerant control Capillary tube

Noise Power Level

Indoor – Hi / Me / Lo dB-A 48 / 44 / 49

Outdoor – Hi dB-A 51
Refrigerant tubing connections Flare type
Max. allowable tubing length at shipment m 10

Refrigerant tube

Narrow tube mm (in.) 6.35 (1/4)
diameter

Wide tube mm (in.) 12.7 (1/2)
Refrigerant tube kit Optional

Indoor Unit Outdoor Unit

Unit dimensions Height mm 680 630

Width mm 900 830

Depth mm 190 305
Package dimensions Height mm 813 713

Width mm 1011 994

Depth mm 296 413

Weight Net

kg 23.5 52.0

Shipping

kg 30.0 57.0

Shipping volume m

3

0.24 0.29

Dimensions & Weight Features Electrical Rating Performance

Indoor Unit KPAV180C5TAA
Outdoor Unit GR180C7TAA

5

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.

Outdoor air temperature 35°C D.B. / 24°C W.B.

Power Surce.......Voltage Rating 400V - 3N - 50Hz .. ....400 V

Control Circuit V 230 50Hz

Cooling

Capacity

kW 6.0

BTU/h 20500

Air circulation (High) m

3

/h 900
Moisture removal (High) Liters/h 3.3
Available voltage range V 342 to 418
Running amperes A 4.6
Power input W 2500
Power factor % 84
C.O.P. W/W 2.4
Compressor locked rotor amperes A 28
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 Indoor / Outdoor 3 and Auto / Auto(Hi, Lo)

Airflow direction (Indoor)

Horizontal Manual

Vertical Auto
Air filter Washable,Anti - mold
Compressor Rotary (Hermetic)
Refrigerant / Amount charged at shipment g R22 / 2380
Refrigerant control Capillary tube

Noise Power Level

Indoor – Hi / Me / Lo dB-A 50 / 47 / 44

Outdoor – Hi dB-A 55
Refrigerant tubing connections Flare type
Max. allowable tubing length at shipment m 10

Refrigerant tube

Narrow tube mm (in.) 6.35 (1/4)
diameter

Wide tube mm (in.) 15.88 (5/8)
Refrigerant tube kit / Accessories Optional / Hanging wall bracket

Indoor Unit Outdoor Unit

Unit dimensions Height mm 680 835

Width mm 900 850

Depth mm 190 305
Package dimensions Height mm 813 913

Width mm 1011 1000

Depth mm 296 400

Weight Net

kg 23.5 67.0

Shipping

kg 30.0 76.0

Shipping volume m

3

0.24 0.37

Dimensions & Weight Features Electrical Rating Performance

Indoor Unit KPAV220C5TAA
Outdoor Unit GR220C7TAA

6

2-2. Major Component Specifications

2-2-1. Indoor Unit

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Part No. POW–K188E
Controls Microprocessor
Control circuit fuse 250 V – 3.15 A

Remote Control Unit RCS–8PS3E

Type Cross-flow
Q´ty ... Dia. and length mm 1 ... ø88 / L746
Fan motor model ... Q´ty UF2– 31A5PA–S ... 1
No. of poles ... rpm (High) 2 ... 1,305
Nominal output W 30
Coil resistance (Ambient temp. 20°C) Ω WHT – BRN : 130.4

WHT – PNK : 169.8

– : –
– : –
– : –

Safety

Type Thermal protector

devices Operating temp. Open °C 130 ± 8

Close Automatic reclosing

Run capacitor µF 2.0

VAC 440
Type Stepping motor
Model MP24GA2
Rating DC 12 V
Coil resistance (Ambient temp. 20°C) Ω Each terminals (1–2, 1–3, 1–4, 1–5) 400 : ± 7%
Coil Aluminum plate fin / Copper tube
Rows 2
Fin pitch mm 1.3
Face area m2 0.250

Heat

Exch. Coil

Flap Motor Fan & Fan Motor

Controller

PCB

Indoor Unit MCAV180C5VAA

7

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Part No. POW–K228E
Controls Microprocessor
Control circuit fuse 250 V – 3.15 A

Remote Control Unit RCS–8PS3E

Type Cross-flow
Q´ty ... Dia. and length mm 1 ... ø88 / L746
Fan motor model ... Q´ty UF2– 31A5PA–S ... 1
No. of poles ... rpm (High) 2 ... 1,380
Nominal output W 30
Coil resistance (Ambient temp. 20°C) Ω WHT – BRN : 130.4

WHT – PNK : 169.8

– : –
– : –
– : –

Safety

Type Thermal protector

devices Operating temp. Open °C 130 ± 8

Close Automatic reclosing

Run capacitor µF 2.0

VAC 440
Type Stepping motor
Model MP24GA2
Rating DC 12 V
Coil resistance (Ambient temp. 20°C) Ω Each terminals (1–2, 1–3, 1–4, 1–5) 400 : ± 7%
Coil Aluminum plate fin / Copper tube
Rows 2
Fin pitch mm 1.3
Face area m2 0.250

Heat

Exch. Coil

Flap Motor Fan & Fan Motor

Circuit

Board

Ass´y

Indoor Unit MCAV220C5VAA

8

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Part No. POW–K185GS–N
Controls Microprocessor
Control circuit fuse 250 V – 3 A

Remote Control Unit RCS – 5PN3E

Type Centrifugal
Number ... Dia. and length mm 2 ... ø 130 / L 180
Fan motor model ... Number K48410–M01417 ... 1
No. of poles ... rpm (230 V, High) 4 ... 1,140
Nominal output W 27
Coil resistance (Ambient temp. 20°C) Ω GRY – WHT : 215 ± 7%

WHT – VLT : 87 ± 7%

VLT – YEL : 87 ± 7%

WHT – PNK : 273 ± 7%

Safety

Type Internal thermal fuse

devices

Operating temp.

Open °C 145 ± 5
Close Automatic reclosing

Run capacitor

µF 2.0

VAC 440
Model M2LJ24ZE31
Rating AC 208 / 230 V, 50 / 60 Hz
No. of poles ... rpm 8 ... 2.5 / 3.0
Nominal output W 3 / 2.5
Coil resistance (Ambient temp. 20°C) kΩ 16.45 ± 15%

Coil Aluminum plate fin / Copper tube
Rows 2
Fin pitch mm 1.8
Face area m

2

0.192

Heat

Exch. Coil

Flap Motor Fan & Fan Motor

Controller

PCB

Indoor Unit KPAV180C5TAA

9

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Part No. POW–K185GS–N
Controls Microprocessor
Control circuit fuse 250 V – 3 A

Remote Control Unit RCS – 5PN3E

Type Centrifugal
Number ... Dia. and length mm 2 ... ø 130 / L 180
Fan motor model ... Number K48410–M01418 ... 1
No. of poles ... rpm (230 V, High) 4 ... 1,280
Nominal output W 41
Coil resistance (Ambient temp. 20°C) Ω GRY – WHT : 95 ±7%

WHT – VLT : 73 ± 7%

VLT – YEL : 73 ± 7%

WHT – PNK : 207 ± 7%

Safety

Type Internal thermal fuse

devices

Operating temp.

Open °C 145 ± 5
Close Automatic reclosing

Run capacitor

µF 2.0

VAC 440
Model M2LJ24ZE31
Rating AC 208 / 230 V, 50 / 60 Hz
No. of poles ... rpm 8 ... 2.5 / 3.0
Nominal output W 3 / 2.5
Coil resistance (Ambient temp. 20°C) kΩ 16.45 ± 15%

Coil Aluminum plate fin / Copper tube
Rows 2
Fin pitch mm 1.8
Face area m

2

0.192

Heat

Exch. Coil

Flap Motor Fan & Fan Motor

Controller

PCB

Indoor Unit KPAV220C5TAA

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Part No. POW-C181BL

Control circuit fuse 250V – 5A
Type Rotary (Hermetic)
Compressor model C-2R173H8V- 80817C88D
Source 380 – 400 V – 3N

~

50 Hz
Nominal output W 1,700
Compressor oil ... Amount cc SUNISO 4GSD-T ... 800
Coil resistance (Ambient temp. 25°C) Ω C – R : 6.369

C – S : 6.073
R – S : 6.217

Type Internal protector External protector

Safety

Overload relay — HOE-10TB TH-5A

devices

Operating temp.

Open °C 125 ± 5 —
Close °C Automatic reclosing —

Operating amp.(Ambient temp. 25°C) — 5A

Run capacitor

µF —

VAC —
Crank case heater 240V 30W
Type Propeller
Q´ty ... Dia. mm 1 ... ø400
Fan motor model ... Q´ty SMEN 19 TFB6055 ... 1
Source 220 – 230 V

~

50 Hz
No. of poles ... rpm (220 V, High) 6 ... 910
Nominal output W 43
Coil resistance (Ambient temp. 20°C) Ω WHT – BRN : 77.7 WHT - YEL : 366

WHT – PNK : 211

Safety

Type Internal type

devices

Operating temp.

Open °C 130 ± 5
Close Automatic reclosing

Run capacitor

µF 2.0

VAC 400
Coil Aluminum plate fin / Copper tube
Rows 2
Fin pitch mm 1.8
Face area m

2

0.508

External Finish Acrylic baked-on enamel finish

Controller

PCB

Heat

Exch. Coil

Compressor

Fan & Fan Motor

10

Outdoor Unit GR180C7TAA

2-2-2. Outdoor Unit

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Part No. Johnson Control

Type Rotary (Hermetic)
Compressor model C-R223H8S - 806187188B
Source 380 – 400 V – 3N

~

50 Hz
Nominal output W 2200
Compressor oil ... Amount cc SUNISO 4GSD-T ... 1350
Coil resistance (Ambient temp. 25°C) Ω C – R : 4.97

C – S : 4.64
R – S : 4.88

Type Internal protector External protector

Safety

Overload relay - HOE-10TB TH-7A

devices

Operating temp.

Open °C 125 ± 5 —
Close °C Automatic reclosing —

Operating amp.(Ambient temp. 25°C) - 7A

Run capacitor

µF —

VAC —
Crank case heater 240V 30W
Type Propeller
Q´ty ... Dia. mm 1 ... ø460
Fan motor model ... Q´ty SMEN 19TFB6064 ... 1
Source 220 – 230 V

~

50 Hz
No. of poles ... rpm (220 V, High) 6 ... 840
Nominal output W 50
Coil resistance (Ambient temp. 20°C) Ω WHT – BRN : 99.5 / WHT - YEL : 252

WHT – PNK : 63.2

Safety

Type Internal type

devices

Operating temp.

Open °C 130 ± 5
Close Automatic reclosing

Run capacitor

µF 5.0

VAC 400
Coil Aluminum plate fin / Copper tube
Rows 2
Fin pitch mm 2.0
Face area m

2

0.610

External Finish Acrylic baked-on enamel finish

Controller

PCB

Heat

Exch. Coil

Compressor

Fan & Fan Motor

11

Outdoor Unit GR220C7TAA

2-3. Other Component Specifications

12

Thermistor (Room sensor) DTN-TKS142B

Resistance kΩ 25°C 5.0 ± 3%

Thermistor (Coil sensor) DTN-TKS131B

Resistance kΩ 0°C 15.0 ± 2%

Transformer (TR) ATR-J105

Rating Primary AC 230V, 50/60Hz

Secondary 19V, 0.526A
Capacity 10VA

Coil resistance Ω (at 21°C) Primary (WHT – WHT): 205 ± 10%

Secondary (BRN – BRN): 2.0 ± 10%

Thermal cut-off temp. 150°C

Indoor Unit MCAV180C5VAA

MCAV220C5VAA

Indoor Unit KPAV180C5TAA

KPAV220C5TAA

13

Thermistor (Room sensor TH2) KTEC-35-S6

Resistance kΩ 10°C 10.0 ± 4% 30°C 4.0 ± 4%

15°C 7.9 ± 4% 35°C 3.3 ± 4%
20°C 6.3 ± 4% 40°C 2.7 ± 4%
25°C 5.0 ± 4% 50°C 1.8 ± 4%

Thermistor (Coil sensor TH1) PBC-41E-S14

Resistance kΩ –20°C 40.1 ± 5% 20°C 6.5 ± 5%

–10°C 24.4 ± 5% 30°C 4.4 ± 5%

0°C 15.3 ± 5% 40°C 3.0 ± 5%

10°C 9.9 ± 5% 50°C 2.1 ± 5%

Transformer (TR) ATR-H85

Rating Primary AC 230V, 50/60Hz

Secondary 11V, 0.727A
Capacity 8VA

Coil resistance Ω (at 21°C) Primary (WHT – WHT): 214 ± 10%

Secondary (BRN – BRN): 1.58 ± 10%

Thermal cut-off temp. 145°C, 2A, 250V

Outdoor Unit GR180C7TAA

Negative Phase Relay (47C) RDR-S400

Rating AC 415V, 3-phase 50Hz
Contact rating AC 400V, 1A
Operation Positive phase: ON

Negative phase: OFF

Electro Magnetic Contactor (MG) HOE-10TB TH-5A

Magnetic contactor

Coil rating AC 220–240V, 50Hz / AC 240–260V, 60Hz
Coil resistance Ω (at 25°C) 1,260 ± 10%
Contact rating (Main) AC 440V, 8A

Thermal relay (Overcurrent relay)

Operating amperes 5A

14

MQT5S-27YZJ

Electro Magnetic Contactor (MG) HOE-10TB TH-7A

Magnetic Contactor

Coil rating AC 220–240V, 50Hz / AC 240–260V, 60Hz
Coil resistance Ω (at 25°C) 1,260 ± 10%
Contact rating (Main) AC 440V, 8A

Thermal relay (Overcurrent relay)

Operating amperes 7A

Negative Phase Relay (47C) RDR-S400

Rating AC 415V, 3-phase 50Hz
Contact rating AC 400V, 1A
Operation Positive phase: ON

Negative phase: OFF

Thermostat (Fan Speed Control 23S)

YTB-S383

Switching temp. °C

high → LOW 28.5°C ± 1
low →HIGH31°C ±1

Outdoor Unit GR220C7TAA

15

16

3. DIMENSIONAL DATA

Indoor Unit MCAV180C5VAA

MCAV220C5VAA

28545

995

45

147.5 147.5

206 (3)

Remote control unit

Center of tubing
hole (2 places)

Narrow tube ø6.35 (1/4")

Drain hose ø18

Wide tube ø12.7 (1/2") -------- - MCAV180
Wide tube ø15.88 (5/8") MCAV220

61

18.5

172.5

Unit : mm

Indoor Unit KPAV180C5TAA

KPAV220C5TAA

86

74 74

Center of tubing hole
ø75 (4 places)

Wide tube ø12.7 (1/2")

Narrow tube ø6.35 (1/4")

Drain hose ø26

74 74

900

86

41

41

190

680

Wide tube ø15.88 (5/8")

KPAV180
KPAV220

Dimensions : mm

17

61

18.5

172.5

18

Outdoor Unit GR180C7TAA

Air discharge

Air intake

538 146

307

337

4 – ø12 holes

830

19

630

305

61
95

Wide tube service valve
ø12.7 (1/2")

Narrow tube service valve
ø6.35 (1/4")

Unit : mm

19

Outdoor Unit GR220C7TAA

Wide tube service valve ø15.88 (5/8")

Narrow tube service valve ø6.35 (1/4")

Check port ø6.35 (1/4")

86
88

155

57

7386

229

285

835

620130 100 55

20

20

325

850

250250

560

6 – ø3.1 holes

Air intake

Air discharge

Unit : mm

4. REFRIGERANT FLOW DIAGRAM

20

Indoor Unit MCAV180C5VAA

KPAV180C5TAA

Outdoor Unit GR180C7TAA

Compressor

Wide tube
service
valve

Wide tube

O.D.
ø15.88 mm
(5/8 ")

Narrow
tube
service
valve

Narrow tube

O.D.
ø6.35 mm
(1/4")

Evaporator

Capillary for
liquid injection

Indoor Unit Outdoor Unit

Muffler

Capillary tube

Condenser

Check port

Accumulator

Strainer

Indoor Unit MCAV220C5VAA

Outdoor Unit GR225C7VAA

Insulation of Refrigerant Tubing

Because capillary tubing is used in the outdoor unit, both the
wide and narrow tubes of this air conditioner become cold. To
prevent heat loss and wet floors due to dripping of
condensation, both tubes must be well insulated with a
proper insulation material. The thickness of the insulation
should be a min. 8 mm.

After a tube has been insulated,
never try to bend it into a narrow
curve because it can cause the tube
to break or crack.

IMPORTANT

CAUTION

Wide tube

Thickness:
Min. 8 mm

Insulation

Narrow tube

Thickness:
Min. 8 mm

KPAV220C5TAA

5-1. Air Throw Distance Chart

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

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

Heating

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

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

0

1

2

3

4

0 1 2 3 4 5 6 7 8 9

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

0

1

2

3

4

0 1 2 3 4 5 6 7 8 9

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

21

Indoor Unit MCAV180C5VAA

Indoor Unit MCAV220C5VAA

5. PERFORMANCE DATA

22

Indoor Unit KPAV180C5TAA

01234567

01234567

3

4

2

1

0

1

0

2

3

4

Horizontal distance (m)

Horizontal distance (m)

Axis air verocity (m/s)

Vertical distance (m)

Axis air verocity (m/s)

Vertical distance (m)

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

Axis air verocity

Flap angle

60°

45°

Axis air verocity

Flap angle

45°

30°

Floor mounted

Ceiling mounted

AIR FLOW CHART

23

Indoor Unit KPAV220C5TAA

01234567

01234567

3

4

2

1

0

1

0

2

3

4

Horizontal distance (m)

Horizontal distance (m)

Axis air verocity (m/s)

Vertical distance (m)

Axis air verocity (m/s)

Vertical distance (m)

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

Axis air verocity

Flap angle

60°

45°

Axis air verocity

Flap angle

45°

30°

Floor mounted

Ceiling mounted

RATING CAPACITY 4.9 kW
AIR FLOW RATE 760 m³/h

EVAPORATOR CONDENSER
ENT.TEMP. °C OUTDOOR AMBIENT TEMP. °C

W.B. D.B. 25 30 35 40 43

TC 4.64 4.51 4.29 4.03 3.72

CM 1.61 1.72 1.85 2.03 2.21
21 SHC 3.18 3.12 3.01 2.89 2.74
23 SHC 3.61 3.54 3.43 3.30 3.15

15 25 SHC 4.02 3.94 3.83 3.71 3.56

27 SHC 4.45 4.36 4.25 4.03 3.72
29 SHC 4.64 4.51 4.29 4.03 3.72
31 SHC 4.64 4.51 4.29 4.03 3.72

TC 5.03 4.84 4.60 4.32 3.98

CM 1.65 1.77 1.90 2.09 2.27
21 SHC 2.78 2.71 2.60 2.47 2.31
23 SHC 3.20 3.11 3.00 2.88 2.73

17 25 SHC 3.63 3.53 3.42 3.29 3.13

27 SHC 4.05 3.93 3.82 3.70 3.55
29 SHC 4.47 4.35 4.24 4.11 3.95
31 SHC 4.89 4.75 4.60 4.32 3.98

TC 5.33 5.15 4.90 4.60 4.24

CM 1.73 1.83 1.96 2.15 2.33
21 SHC 2.33 2.26 2.15 2.02 1.87
23 SHC 2.74 2.67 2.57 2.44 2.29

19 25 SHC 3.14 3.08 2.97 2.85 2.70

27 SHC 3.55 3.49 3.39 3.26 3.11
29 SHC 3.94 3.90 3.79 3.68 3.52
31 SHC 4.36 4.31 4.21 4.08 3.93

TC 5.65 5.45 5.20 4.88 4.50

CM 1.77 1.88 2.02 2.21 2.40
23 SHC 2.30 2.23 2.12 1.99 1.84

21 25 SHC 2.70 2.63 2.54 2.41 2.26

27 SHC 3.11 3.05 2.94 2.82 2.66
29 SHC 3.50 3.45 3.36 3.23 3.08
31 SHC 3.91 3.87 3.76 3.64 3.49

TC 6.03 5.77 5.45 5.10 4.75

CM 1.80 1.92 2.07 2.26 2.46

23 25 SHC 2.26 2.16 2.05 1.92 1.79

27 SHC 2.65 2.57 2.45 2.32 2.19
29 SHC 3.04 2.98 2.87 2.74 2.61
31 SHC 3.48 3.40 3.27 3.14 3.03

TC: TOTAL COOLING CAPACITY kW
SHC: SENSIBLE HEAT CAPACITY kW
CM: COMPRESSOR INPUT kW
RATING CONDITIONS

OUTDOOR AMBIENT TEMPERATURE 35°C D.B.
INDOOR UNIT ENTERING AIR TEMP. 27°C D.B./19°C W.B.

24

5-2. Cooling Capacity

Indoor Unit MCAV180C5VAA
Outdoor Unit GR180C7TAA

RATING CAPACITY 6 kW
AIR FLOW RATE 830 m³/h

EVAPORATOR CONDENSER
ENT.TEMP. °C OUTDOOR AMBIENT TEMP. °C

W.B. D.B. 25 30 35 40 43

TC 5.69 5.52 5.26 4.93 4.55

CM 2.06 2.20 2.36 2.59 2.82
21 SHC 3.90 3.82 3.69 3.53 3.35
23 SHC 4.42 4.33 4.20 4.04 3.86

15 25 SHC 4.92 4.83 4.70 4.54 4.36

27 SHC 5.44 5.33 5.20 4.93 4.55
29 SHC 5.69 5.52 5.26 4.93 4.55
31 SHC 5.69 5.52 5.26 4.93 4.55

TC 6.16 5.92 5.63 5.30 4.88

CM 2.10 2.26 2.42 2.67 2.90
21 SHC 3.41 3.31 3.18 3.03 2.83
23 SHC 3.92 3.81 3.68 3.52 3.34

17 25 SHC 4.44 4.32 4.19 4.03 3.83

27 SHC 4.95 4.81 4.68 4.53 4.34
29 SHC 5.48 5.32 5.19 5.03 4.84
31 SHC 5.99 5.82 5.63 5.30 4.88

TC 6.52 6.30 6.00 5.63 5.19

CM 2.21 2.33 2.50 2.74 2.97
21 SHC 2.86 2.77 2.63 2.48 2.30
23 SHC 3.36 3.27 3.14 2.99 2.80

19 25 SHC 3.85 3.77 3.64 3.50 3.30

27 SHC 4.34 4.28 4.15 3.99 3.81
29 SHC 4.83 4.77 4.64 4.50 4.30
31 SHC 5.33 5.28 5.15 5.00 4.81

TC 6.91 6.68 6.37 5.97 5.50

CM 2.26 2.39 2.58 2.82 3.06
23 SHC 2.82 2.73 2.60 2.44 2.26

21 25 SHC 3.30 3.22 3.10 2.95 2.77

27 SHC 3.80 3.73 3.60 3.46 3.26
29 SHC 4.29 4.23 4.11 3.95 3.77
31 SHC 4.79 4.73 4.60 4.46 4.28

TC 7.38 7.07 6.68 6.25 5.82

CM 2.30 2.45 2.64 2.88 3.14

23 25 SHC 2.77 2.65 2.50 2.35 2.19

27 SHC 3.24 3.14 3.00 2.84 2.69
29 SHC 3.73 3.65 3.51 3.35 3.20
31 SHC 4.26 4.16 4.00 3.85 3.70

TC: TOTAL COOLING CAPACITY kW
SHC: SENSIBLE HEAT CAPACITY kW
CM: COMPRESSOR INPUT kW
RATING CONDITIONS

OUTDOOR AMBIENT TEMPERATURE 35°C D.B.
INDOOR UNIT ENTERING AIR TEMP. 27°C D.B./19°C W.B.

Indoor Unit MCAV220C5VAA

Outdoor Unit GR220C7TAA

25

RATING CAPACITY 4.9 kW
AIR FLOW RATE 800 m³/h

EVAPORATOR CONDENSER
ENT.TEMP. °C OUTDOOR AMBIENT TEMP. °C

W.B. D.B. 25 30 35 40 43

TC 4.64 4.51 4.29 4.03 3.72

CM 1.61 1.72 1.85 2.03 2.21
21 SHC 3.18 3.12 3.01 2.89 2.74
23 SHC 3.61 3.54 3.43 3.30 3.15

15 25 SHC 4.02 3.94 3.83 3.71 3.56

27 SHC 4.45 4.36 4.25 4.03 3.72
29 SHC 4.64 4.51 4.29 4.03 3.72
31 SHC 4.64 4.51 4.29 4.03 3.72

TC 5.03 4.84 4.60 4.32 3.98

CM 1.65 1.77 1.90 2.09 2.27
21 SHC 2.78 2.71 2.60 2.47 2.31
23 SHC 3.20 3.11 3.00 2.88 2.73

17 25 SHC 3.63 3.53 3.42 3.29 3.13

27 SHC 4.05 3.93 3.82 3.70 3.55
29 SHC 4.47 4.35 4.24 4.11 3.95
31 SHC 4.89 4.75 4.60 4.32 3.98

TC 5.33 5.15 4.90 4.60 4.24

CM 1.73 1.83 1.96 2.15 2.33
21 SHC 2.33 2.26 2.15 2.02 1.87
23 SHC 2.74 2.67 2.57 2.44 2.29

19 25 SHC 3.14 3.08 2.97 2.85 2.70

27 SHC 3.55 3.49 3.39 3.26 3.11
29 SHC 3.94 3.90 3.79 3.68 3.52
31 SHC 4.36 4.31 4.21 4.08 3.93

TC 5.65 5.45 5.20 4.88 4.50

CM 1.77 1.88 2.02 2.21 2.40
23 SHC 2.30 2.23 2.12 1.99 1.84

21 25 SHC 2.70 2.63 2.54 2.41 2.26

27 SHC 3.11 3.05 2.94 2.82 2.66
29 SHC 3.50 3.45 3.36 3.23 3.08
31 SHC 3.91 3.87 3.76 3.64 3.49

TC 6.03 5.77 5.45 5.10 4.75

CM 1.80 1.92 2.07 2.26 2.46

23 25 SHC 2.26 2.16 2.05 1.92 1.79

27 SHC 2.65 2.57 2.45 2.32 2.19
29 SHC 3.04 2.98 2.87 2.74 2.61
31 SHC 3.48 3.40 3.27 3.14 3.03

TC: TOTAL COOLING CAPACITY kW
SHC: SENSIBLE HEAT CAPACITY kW
CM: COMPRESSOR INPUT kW
RATING CONDITIONS

OUTDOOR AMBIENT TEMPERATURE 35°C D.B.
INDOOR UNIT ENTERING AIR TEMP. 27°C D.B./19°C W.B.

Indoor Unit KPAV180C5TAA

Outdoor Unit GR180C7TAA

26

RATING CAPACITY 6 kW
AIR FLOW RATE 900 m³/h

EVAPORATOR CONDENSER
ENT.TEMP. °C OUTDOOR AMBIENT TEMP. °C

W.B. D.B. 25 30 35 40 43

TC 5.69 5.52 5.26 4.93 4.55

CM 2.06 2.20 2.36 2.59 2.82
21 SHC 3.90 3.82 3.69 3.53 3.35
23 SHC 4.42 4.33 4.20 4.04 3.86

15 25 SHC 4.92 4.83 4.70 4.54 4.36

27 SHC 5.44 5.33 5.20 4.93 4.55
29 SHC 5.69 5.52 5.26 4.93 4.55
31 SHC 5.69 5.52 5.26 4.93 4.55

TC 6.16 5.92 5.63 5.30 4.88

CM 2.10 2.26 2.42 2.67 2.90
21 SHC 3.41 3.31 3.18 3.03 2.83
23 SHC 3.92 3.81 3.68 3.52 3.34

17 25 SHC 4.44 4.32 4.19 4.03 3.83

27 SHC 4.95 4.81 4.68 4.53 4.34
29 SHC 5.48 5.32 5.19 5.03 4.84
31 SHC 5.99 5.82 5.63 5.30 4.88

TC 6.52 6.30 6.00 5.63 5.19

CM 2.21 2.33 2.50 2.74 2.97
21 SHC 2.86 2.77 2.63 2.48 2.30
23 SHC 3.36 3.27 3.14 2.99 2.80

19 25 SHC 3.85 3.77 3.64 3.50 3.30

27 SHC 4.34 4.28 4.15 3.99 3.81
29 SHC 4.83 4.77 4.64 4.50 4.30
31 SHC 5.33 5.28 5.15 5.00 4.81

TC 6.91 6.68 6.37 5.97 5.50

CM 2.26 2.39 2.58 2.82 3.06
23 SHC 2.82 2.73 2.60 2.44 2.26

21 25 SHC 3.30 3.22 3.10 2.95 2.77

27 SHC 3.80 3.73 3.60 3.46 3.26
29 SHC 4.29 4.23 4.11 3.95 3.77
31 SHC 4.79 4.73 4.60 4.46 4.28

TC 7.38 7.07 6.68 6.25 5.82

CM 2.30 2.45 2.64 2.88 3.14

23 25 SHC 2.77 2.65 2.50 2.35 2.19

27 SHC 3.24 3.14 3.00 2.84 2.69
29 SHC 3.73 3.65 3.51 3.35 3.20
31 SHC 4.26 4.16 4.00 3.85 3.70

TC: TOTAL COOLING CAPACITY kW
SHC: SENSIBLE HEAT CAPACITY kW
CM: COMPRESSOR INPUT kW
RATING CONDITIONS

OUTDOOR AMBIENT TEMPERATURE 35°C D.B.
INDOOR UNIT ENTERING AIR TEMP. 27°C D.B./19°C W.B.

Indoor Unit KPAV220C5TAA

Outdoor Unit GR220C7TAA

27

28

6. ELECTRICAL DATA

6-1. Electrical Characteristics

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor Compressor

Performance at

23O V 50 Hz 400 - 3N - 50Hz

Rating Conditions Running Amps. A 0.39 0.55 3.66 4.6

Power Input kW 0,075 0,120 2.305 2,5

Full Load Conditions Running Amps. A 0.39 0.55 4.46 5.4

Power Input kW 0,075 0,120 2.855 3,05

Rating Conditions : Indoor Air Temperature 27°C D.B. / 19°C W.B.

Outdoor Air Temperature 35°C D.B.

Full Load Conditions : Indoor Air Temperature 32°C D.B. / 23°C W.B.

Outdoor Air Temperature 43°C D.B.

Indoor Unit MCAV220C5VAA
Outdoor Unit GR220C7TAA

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor Compressor

Performance at

230 V 50 Hz 400 V - 3N - 50Hz

Rating Conditions Running Amps. A 0.37 0.50 3.13 4.0

Power Input kW 0,070 0,093 1,96 1.96

Full Load Conditions Running Amps. A 0.37 0.50 3.6 4.5

Power Input kW 0,070 0,093 2.16 2.33

Rating Conditions : Indoor Air Temperature 27°C D.B. / 19°C W.B.

Outdoor Air Temperature 35°C D.B.

Full Load Conditions : Indoor Air Temperature 32°C D.B. / 23°C W.B.

Outdoor Air Temperature 43°C D.B.

Indoor Unit MCAV180C5VAA
Outdoor Unit GR180C7TAA

Indoor Unit KPAV180C5TAA

Outdoor Unit GR180C7TAA

Rating Conditions: Indoor Air Temperature 27°C DB / 19°C WB

Outdoor Air Temperature 35°C DB

Full Load Conditions: Indoor Air Temperature 32°C DB / 23°C WB

Outdoor Air Temperature 43°C DB

Indoor Unit Outdoor Unit

Complete Unit

Fan Motor Fan Motor Compressor

Performance at 230 V ~ 50Hz

Rating Conditions

Running Amps. A 0.33 0.40 3.27 4.0
Power Input kW 0.071 0.082 1.807 1.96

Full Load Conditions

Running Amps. A 0.33 0.40 3.77 4.5
Power Input kW 0.071 0.082 2.177 2.33

400 V – 3N ~ 50Hz

Rating Conditions: Indoor Air Temperature 27°C DB / 19°C WB

Outdoor Air Temperature 35°C DB

Full Load Conditions: Indoor Air Temperature 32°C DB / 23°C WB

Outdoor Air Temperature 43°C DB

Indoor Unit Outdoor Unit

Complete Unit

Fan Motor Fan Motor Compressor

Performance at 230 V ~ 50Hz

Rating Conditions

Running Amps. A 0.40 0.55 3.65 4.6
Power Input kW 0.083 0.120 2.297 2.50

Full Load Conditions

Running Amps. A 0.40 0.55 4.45 5.4
Power Input kW 0.083 0.120 2.847 3.05

400 V – 3N ~ 50Hz

Indoor Unit
Outdoor Unit

KPAV220C5TAA
GR220C7TAA

29

6-2 Electric Wiring Diagrams

Indoor Unit KPAV180C5TAA

WARNING

To avoid electrical shock hazard, be

sure to disconnect power before
checking, servicing and/or cleaning
any electrical parts

KPAV220C5TAA

30

Indoor Unit MCAV180C5VAA

MCAV220C5VAA

31

1
2

4

L1

L3

L2

N

TP2

GRN/YEL

FMO

CM

GRY
GRY

GRN/YEL

7

UW

14

V

UW

MG

A

8

GRY

S13RT

B

YEL

RED

WHT

BLU

R

S

T

GRN/YEL

GRN/YEL

GRY

RED
RED

RED
GRY

WHT

BLU

RED

BLU

47C

S

A

C

TRB

BLK

WHT

BRN

CC

ORG

THERMO

C2

WHT

YEL

BRN

PNK

GRY

WHT

YEL

BRN

PNK

GRY

GRY

Indoor Unit GR180C7TAA

WARNING

To avoid electrical shock hazard, be

sure to disconnect power before
checking, servicing and/or cleaning
any electrical parts

GR220C7TAA

TO INDOOR UNIT

32

33

7. INSTALLATION INSTRUCTIONS

7-1. Installation Site Selection

To prevent abnormal heat
generation and the possibility
of fire, don’t place obstacles,
enclosures and grills in front
of or surrounding the air
conditioner in a way that may
block air flow.

AVOID:

●

direct sunlight.

●

nearby heat sources that may affect performance of
the unit.

●

areas where leakage of flammable gas may be
expected.

●

places where large amounts of oil mist exist.

DO:

●

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

●

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

●

select a location where tubing and drain pipe have the
shortest run to the outside.

●

allow room for operation and maintenance as well as
unrestricted air flow around the unit. (Fig. 1)

●

install the unit within the maximum elevation
difference (H) above or below the outdoor unit and
within a total tubing length (L) from the outdoor unit as
detailed Table 1 and Fig. 2a.

Indoor Unit

,







15 cm

min.

15 cm
min.

15 cm min.

INDOOR UNIT

Front View

INDOOR
UNIT

Tubing length (L)

OUTDOOR
UNIT

Elevation
difference (H)

Fig. 2

Fig. 2a

Fig.1

WARNING

Table 1

* If total tubing length becomes 7.5 to 20 m (max.), charge additional refrigerant (R22) by 25 g/m.

No additional charge of compressor oil is necessary.

Model

Max. Allowable

Tubing Length at

Shipment (m)

Limit of Tubing

Length (L)

(m)

Limit of Elevation

Difference (H)

(m)

Required Amount of

Additional Refrigerant

(g/m)*

MCAV180/KPAV180 20

Minimum height
from floor level

1.5m

Indoor Unit

Wall

Floor level

For stable operation of the
air conditioner, do not
install wall-mounted type
indoor units less than

1.5m from floor level.

CAUTION

Fig. 2b

7.5
7 25

MCAV220/KPAV220 7.5 30

34

AVOID:

●

heat sources, exhaust fans, etc. (Fig. 3)

●

damp, humid or uneven locations.

DO:

●

choose a place as cool as possible.

●

choose a place that is well ventilated.

●

allow enough room around the unit for air
intake/exhaust and possible maintenance.
(Figs. 4a to 4c)

●

provide a solid base (concrete block, 10 ✕40 cm
beams or equal), a minimum of 10 cm above ground
level to reduce humidity and protect the unit against
possible water damage and decreased service life.
(Fig.5a and 5b)

●

use lug bolts or equal to bolt down unit, reducing
vibration and noise.

Outdoor Unit

Outdoor unit

Hot air

Heat source

Exhaust fan

Fig. 3

Air intake

Min. 10 cm

Air discharge

Min.

5 cm

Min.
40 cm

Valve
side
Min. 25 cm

Top View

Air intake

Concrete
or equal

About 10 cm

Min. 10 cm

Anchor bolts
(4 pcs.)

About 40 cm

Fig. 5 - A

Ground

Obstacle

Obstacle above

Air discharge

Min.

2 m

Min.

2 m

Side View

Fig. 4c

Required space around the unit.

Top View

Fig. 4a

Fig. 5a

Fig. 5 - B

Min. 10 cm

Anchor bolts
(4 pcs.)

Fig. 5b

Min. 10 cm

Air discharge

Min.

10 cm

Min.
50 cm

Valve
side
Min. 60 cm

Air intake

Top View

Fig. 4b

GR180C7VAA mod.

GR220C7VAA mod.

GR180/220C7VAA mod.

GR180C7VAA mod.

GR220C7VAA mod.

35

7-2. Remote Control Unit Installation

Position

The remote control unit can be operated from either a
non-fixed position or a wall-mounted position.

To ensure that the air conditioner operates correctly, do
not install the remote control unit in the following places:

●

In direct sunlight

●

Behind a curtain or other place where it is covered

●

More than 8 m away from the air conditioner

●

In the path of the air conditioner's airstream

●

Where it may become extremely hot or cold

●

Where it may be subject to electrical or magnetic
interference

Mounting on a Wall

a) Removable mounting

1) Momentarily hold the remote control unit at the
desired mounting position.

2) Confirm that the air conditioner responds
correctly when you press keys on the remote
control from that position.

3) After confirming correct operation, use a
screwdriver to screw the supplied special
mounting screw into the wall. (Fig.6a)

4) Hang the remote control unit from the mounting
screw.

b) Non-removable mounting

1) Momentarily hold the remote control unit at the
desired mounting position.

2) Confirm that the air conditioner responds
correctly when you press keys on the remote
control from that position.

3) After confirming correct operation, use a
screwdriver to screw the supplied special
mounting screw into the wall. (Fig.6a)

4) Remove the remote control cover by sliding it
downward.

5) Remove the batteries of the remote control unit.

6) Use a screwdriver to screw the remote control
unit securing screw into the wall through the hole
in the battery compartment. (Fig.6b)

7) Replace the batteries.

8) Again confirm that the remote control unit
operates correctly.

Wall

Special
mounting
screw

Screw

Wall

Fig.6b

Fig.6a

Removable mounting

Non-removable mounting

36

Regulations on wiring diameter differ from locality to
locality. For field wiring requirements, please refer to
your local electrical codes. Carefully observe these
regulations when carrying out the installation.

Table 2 lists recommended wire lengths and cross
section area for power supply systems.

Refer to the WIRING SYSTEM DIAGRAM for the
meaning of "A" and "B" in Table 2.

NOTE

●

Be sure to comply with
local codes on running the
wire from the indoor unit to
the outdoor unit (size of
wire and wiring method,
etc.).

●

Each wire must be firmly
connected.

●

No wire should be allowed
to touch refrigerant tubing,
the compressor, or any
moving part.

To avoid the risk of electric
shock, each air conditioner
unit must be grounded.

●

Be sure to connect the
power supply line to the
outdoor unit as shown in
the wiring diagram. The
indoor unit draws its power
from the outdoor unit.

WARNING

WARNING

CAUTION

WIRING SYSTEM DIAGRAM

Power supply

220 – 240 V 50Hz

Ground

(A)

2

1

INDOOR

UNIT

OUTDOOR

UNIT

GR180C7VAA
GR220C7VAA

L
N

1
2

4 4

(B)

7-3. Recommended Wire Length and Size

Table 2

Cross-Sectional

Fuse or Circuit

Area (mm

2

)

2.5 2.5

Model

Breaker Capacity

GR180C7TAA

20
30

20 A22
20 A

GR220C7TAA

16

mm

2

mm

2

(A) Power Supply Wiring Length (m)

(B) Power Line

8. FUNCTION

8-1. Room Temperature Control

●

Room temperature control is obtained by cycling the compressor ON and OFF under control of the room
temperature sensor in the remote control unit.

●

The room temperature (and other information) is transmitted every 3 minutes by the remote control unit to the
controller in the indoor unit.

●

The control circuit will not attempt to turn the compressor ON until the compressor has been OFF for at least
3 minutes. To protect the compressor from stalling out when trying to start against the high side refrigerant
pressure, the control circuit has a built-in automatic time delay to allow the internal pressure to equalize.

●

As a protective measure, the control circuit switches the compressor OFF after 5 minutes or more of compressor
operation.

●

Thermo. ON : When the room temperature is above T + 1°C (T°C is set temperature).

Compressor ➞ON

●

Thermo. OFF : When the room temperature is equal to or below set temperature T°C.

Compressor ➞OFF

3 minutes 3 minutes 3 minutes 3 minutes 3 minutes 3 minutes 3 minutes

3 minutes5 minutes

ON OFF ON OFF ON OFFCompressor

ON OFF ON OFF ON OFF

More than

5 minutes

Outdoor fan

Indoor fan

Set speed

T+1 °C

T °Cset temp.

Thermo.
OFF

Thermo.
OFF

Thermo.
ON

Thermo.
OFF

Thermo.
ON

Thermo.
ON

Thermo.
ON

Room temp.

Signal from remote control unit

37

8-2. Dry Operation (Dehumidification)

●

Dry operation uses the ability of the cooling cycle to remove moisture from the air, but by running at low level to
dehumidify without greatly reducing the room temperature. The air conditioner repeats the cycle of turning ON
and OFF automatically as shown in the chart below according to the room temperature.

● Intermittent ventilation occurs by switching the indoor fan speed between L ↔ LL.

● Dry operation does not occur when the room temperature is under 15°C, which is the monitor zone.

● When the compressor stops, the indoor fan stops as well.

8-3. Freeze Prevention

●

This function prevents freezing of the indoor heat exchange coil.

●

When the compressor has been running for 10 minutes or more and the temperature of the indoor heat
exchange coil falls below –1°C, the control circuit stops the compressor for at least 6 minutes. The compressor
does not start again until the temperature rises above 8°C or 6 minutes has elapsed.

ON ON ON ON

OFFOFF

Set speed

More than

10 minutes

6 minutes

T+1 °C

Indoor heat exch.
coil temp.

–1 °C

Compressor

Indoor fan

Room temp.

Thermo. OFF

Thermo. ON

Set temp. T °C

More than

10 minutes

More than

6 minutes

Set speed

NOTE

Room temp.

Cooling operation

T+2 °C

Set temp. T °C

T–1 °C

Monitor zone
Both the indoor and outdoor units stop.

Room temp. 15 °C

✻Dry A zone

Compressor :
FMI (indoor fan) :

Continuous operation
L (low speed) / LL (very low speed) intermittent ventilation

only while the compressor is ON.

✻Dry B zone

Compressor :
FMI (indoor fan) :

Intermittent operation (ON for 3 minutes and OFF for 9 minutes)
L (low speed) / LL (very low speed) intermittent ventilation

only while the compressor is ON.

38

9. TROUBLESHOOTING

9-1. Check before and after

troubleshooting

9-1-1. Check power supply wiring.

●

Check that power supply wires are correctly connected
to terminals L and N on the terminal plate in the
outdoor unit.

9-1-2. Check inter-unit wiring.

●

Check that inter-unit wiring is correctly connected to
the indoor unit from the outdoor unit.

9-1-3. Check power supply.

●

Check that voltage is in specified range
(±10% of the rating).

●

Check that power is being supplied.

9-1-4. Check lead wires and connectors in

indoor and outdoor units.

●

Check that coating of lead wires is not damaged.

●

Check that lead wires and connectors are firmly
connected.

●

Check that wiring is correct.

39

WARNING

Hazardous voltage can cause ELECTRIC
SHOCK or DEATH. Disconnect power or turn
off circuit breaker before you start checking
or servicing.

1

Indoor

unit

Outdoor

unit

Inter-unit
wiring

Power supply:
380 V – 400 V
3N ~ 50 Hz

N

2

L1
L2
L3

L1
L2

L3

N

Ground

Ground

1
2

4 4

●

Check that power supply wires are correctly connected
to terminals L1, L2 , L3 and N on the terminal plate in
the outdoor unit.

THREEPHASE MODELS

380V – (400V)

380V – (400V)

380V – (400V)

L1

L2

L3

N

220V – (230V)

THREEPHASE MODELS

40

9-2. Air conditioner does not operate.

9-2-1. Circuit breaker trips (or fuse blows).

A. When the circuit breaker is set to ON, it is tripped soon. (Resetting is not possible.)

●

There is a possibility of ground fault.

●

Check insulation resistance.

If resistance value is 2MΩ or less, insulation is defective (“NO”).

1

Indoor

unit

Ground

Outdoor

unit

21

2

4

2

4

11

N

L2

L1

L3

N

L2

L1

L3

Power
supply

Power
supply
wiring

Inter-unit
wiring

Circuit
breaker

Measure insulation
resistance of electrical
parts in outdoor unit.

NO

NO

Set circuit breaker to OFF.

*

Measure insulation
resistance of electrical
parts in indoor unit.

1

Remove both power supply wires
and inter-unit wires from terminal
plate in outdoor unit.

Measure insulation resistance
of outdoor unit.

•

2

Remove inter-unit wires from
terminal plate in indoor unit.

Measure insulation resistance
of indoor unit.

•

•

•

Insulation of
outdoor unit
is defective.

Insulation of
indoor unit
is defective.

41

9-2-2. Neither indoor nor outdoor unit runs.

A. Power is not supplied.

B. Check remote control unit.

C. Check "OPERATION selector" switch in the indoor unit.

D. Check transformer in indoor unit.

NO

•

Check power supply.
Power is being supplied to the

outdoor unit.

Circuit breaker
is tripped.

Power failure

Reset breaker.

Wait for recovery
or contact power
company.

YES

NO

•

OPERATION selector switch is set
in ON position.

Set OPERATION selector switch
to ON.

Switch Ass'y or indoor PCB Ass'y
is defective.

Refer to Step C below.

Clean transmitter.

OK

•

Try to run with another remote
control unit.

First remote control unit is defective.

•

Check for residue buildup on
transmitter of remote control unit.

•

Check for residue buildup on remote
control receiver on front of indoor
unit.

Clean receiver.

Does not run.

•

Measure resistance of primary and
secondary winding.
(TR2)

42

E. Check fuse on the indoor PCB Ass'y.

F. Check TIMER on the remote control unit.

OK

OK

OK

OK

OK

•

Check fuse on indoor PCB Ass'y
for continuity. (F)

•

Check operation lamp to see
if light is ON.

Light is OFF

•

Measure resistance of primary and
secondary winding of transformer.
(TR)

Indoor PCB Ass'y or switch Ass'y is
defective.

OK

•

Measure resistance of indoor fan
motor winding. (FMI )

•

Measure resistance of outdoor fan
motor winding. (FMO)

OK

•

Measure resistance of flap
motor winding. (FLP)

Measure resistance of either power
relay or magnetic contactor. (MG)

If fuse has been blown,

Measure resistance of PTC
thermistor. (PTC)

Replace the fuse.

•

Timer is turned ON. Check to see
if "ON" is displayed on remote
control

YES

Press TIMER SELECT button to
select NORM.
(NORM. is position when
neither ON nor OFF appears
on display.)

43

9-2-3. Only outdoor unit does not run.

A. Check MODE selector switch of remote control unit.

B. Check setting temperature.

C. Check power relay in outdoor unit.

D. Check magnetic contactor in outdoor unit.

OK

NO

Is room temperature too low ?

Try to lower setting temperature by
temperature setting button cooler.

Outdoor unit still does
not run.

Remote control unit is defective.

•

Try to run using another remote
control unit.

OK

•

Measure coil resistance of power
relay.

Check indoor PCB Ass'y.

(PR)

•

Check that MODE selector switch
is not set at "FAN".

If it is set at FAN,

Set to "COOL".

Outdoor unit does not run when air conditioner is in following conditions.

●

During thermo OFF (when the room temperature is below the set temperature).

●

During freeze prevention (for at least 6 minutes).

NOTE

OK

•

Measure coil resistance of magnetic
contactor.

Check indoor PCB Ass'y.

(MG)

44

E. Check negative phase relay.

F. Check magnetic contactor.

G. Check indoor PCB Ass'y.

H. Check compressor motor protector.

Check negative phase relay to see
if it has operated.

•

Rewire power supply wires.

•

YES

(47C)

Check coil resistance of magnetic
contactor.

•
(MG)

YES

Check compressor motor
internal protector.

•
(49C)

Temperature of compressor is
abnormally high.

Refrigerant gas shortage.

YES

YES

Charge refrigerant gas.

Check compressor.
There is a possibility of
locked rotor.

•

NO 90% or more of

rated voltage.

NO

It’s operated.

Check compressor motor
overcurrent relay. (51C)

•

Clean heat exchanger or
remove obstacles.

•

Check power supply voltage.
Voltage is abnormally low.

•

Outdoor heat exchanger coil
is dirty or there are obstacles
near air suction inlet.

45

9-3. Some part of air conditioner does not operate.

9-3-1. Only indoor fan does not run.

9-3-2. Only outdoor fan does not run.

Fan cannot
be turned.

OK

•

Check fan rotation.
Turn fan gently once or twice by
hand.

•

Check fan casing
foreign matter on
inside.

Fan motor burnout
or foreign matter in
bearings.

Remove foreign
matter or repair.

Repair or replace.

•

Measure resistance of indoor fan
motor winding.

•

Check fan motor capacitor.

Fan cannot
be turned.

OK

•

Check fan rotation.
Turn fan gently once or twice by
hand.

•

Check fan casing
foreign matter on
inside.

Fan motor burnout
or foreign matter in
bearings.

Remove foreign
matter or repair.

Repair or replace.

•

Measure resistance of indoor fan
motor winding.

•

Check fan motor capacitor.

•

Measure coil resistance of relay.
(1X)

(Only for models GR180C7VAA)

46

●

Check transformer in outdoor unit. (GR180C7TAA Only)

●

Check fuse on outdoor PCB Ass'y. (GR180C7TAA Only)

•

Measure resistance of primary and
secondary winding.
(TR2)

If fuse blows,

Check fuse on outdoor PCB Ass’y
for continuity.

•

OK

Measure resistance of primary
winding of transformer.

•
(TR2)

OK

Measure resistance of outdoor
fan motor winding.

•

Outdoor PCB Ass’y is defective.

•

(F)

9-3-3. Only compressor does not run.

•

Check solid state relay in outdoor
unit.

(SSR)

( For GR180C7VAA)

•

Measure resistance of flap
motor winding.

(FLP)

•

Measure resistance of
compressor motor winding.

9-3-4. Only flap motor does not run

9-3-5. Function of outdoor fan speed control does not work properly.

47

48

9-4. Air conditioner operates, but abnormalities are observed.

9-4-1. Poor cooling.

9-4-2. Excessive cooling.

Air filter is clogged.

NO

YES

Temperature
difference
is small.

YES

Temperature difference between
suction and discharge air is
large enough (approx. 10 deg. or more).

Possibility of
gas shortage.

YES

•

Check position of remote control unit.
Cool air from air conditioner reaches
position directly.

•

Change position of remote
control unit.

•

Wide and narrow tubes between
indoor unit and outdoor unit are
insulated.

Insulate both wide and narrow
tubes separately and then
tape together.

•

Measure temperature of suction and
discharge air of air conditioner.

Charge refrigerant
gas (R22).

Check for clogging of air filter.

•

Fan speed is set to LOW.

Clean filter.

Set fan speed to either
HIGH or MEDIUM.

•

Review cooling load estimate,
if performance of air conditioner is
normal.

Reduce cooling load or
replace the air conditioner
with larger capacity.

NO

NO

•

Set temperature is suitable.

Set temperature to higher or
lower value using temperature
setting buttons of the remote
control unit.

•

Remote control unit is placed where
it can detect room temperature
properly.

Change position of remote
control unit.

49

9-5. If a sensor is defective.

9-5-1. Indoor coil temp. thermistor (TH1) is defective.

A. Open

When thermistor opens, the air conditioner will be in the following conditions as the controller tries to detect
extremely low indoor coil temperature.

In Cooling mode: Finction of freeze prevention continues to work. That is, the controller turns both

compressor and outdoor fan motor periodically ON and OFF for several minutes.
(Refer to "5-2. Freeze Prevention")

B. Short

When thermistor is short, the air conditioner will be in the following conditions as
the controller tries to detect extremely high indoor coil temperature.

In Cooling mode: Function of freeze prevention will not work even when the frost builds up on indoor heat

exchanger coil

9-5-2. Room temp. thermistor (TH2) is defective.

A. Open

When thermistor opens, the air conditioner will be in the following conditions as the controller tries to detect
extremely low room temperature.

In Cooling mode: The air conditioner soon stops and will not start again.

(Thermo.OFF)
Neither outdoor fan nor compressor runs.

B. Short

When thermistor is short, the air conditioner will be in the following conditions as
the controller tries to detect extremely high room temperature.

In Cooling mode: The air conditioner continues to operate. (Thermo.ON)

Both the outdoor fan and compressor do not stop.
As a result, the room becomes too cold.

Definition of Open or Short Circuit of Sensor (Thermistor)

Open...A lead wire is broken or disconnected or the circuit inside the temperature sensor is open .
Short...The protective cover of a lead wire has been damaged, and the exposed wire is touching another metal

part, or both lead wires have become exposed and are touching each other. Alternatively, the circuit inside
the temperature sensor is closed.

NOTE

Temperature
sensor

Lead
wires

Thermistor Structure

50

10-1. Measurement of Insulation

Resistance

●

The insulation is in good condition if the resistance
exceeds 2MΩ.

10-1-1.Power Supply Wires

Clamp the ground wire of the power supply wires with
the lead clip of the insulation resistance tester and
measure the resistance by placing a probe on either of
the power wires. (Fig. 1)

Then measure the resistance between the ground wire
and the other power wire. (Fig. 1)

10-1-2.Indoor Unit

Clamp an aluminum plate fin or copper tube with the
lead clip of the insulation resistance tester and
measure the resistance by placing a probe on each
terminal screw on the terminal plate. (Fig. 2)
Note that the ground line terminal should be skipped
for the check.

10-1-3.Outdoor Unit

Clamp an aluminum plate fin or copper tube with the
lead clip of the insulation resistance tester and
measure the resistance by placing a probe on each
terminal screw where power supply lines are
connected on the terminal plate. (Fig. 2)

10-1-4.Measurement of Insulation

Resistance for Electrical Parts

Disconnect the lead wires of the desired electric part
from terminal plate, capacitor, etc. Similarly disconnect
the connector. Then measure the insulation resistance.
(Figs. 3 and 4)

Refer to Electric Wiring Diagram.
If the probe cannot enter the poles because the hole is

too narrow then use a probe with a thinner pin.

NOTE

10. CHECKING ELECTRICAL COMPONENTS

Insulation
tester

Probe

Clip

Ground wire

Terminal plate

Copper
tube or
metallic part

Clip

Insulation
tester

Probe

Copper
tube or
metallic part

Clip

Insulation
tester

Probe

Clip

Insulation
tester

Probe

Metallic
part

From fan motor,
compressor and
other parts

Fig. 1

Fig. 2

Fig. 3

Fig. 4

51

10-2. Checking Continuity of Fuse

on PCB Ass'y

●

Remove the PCB Ass’y from the electrical
component box. Then pull out the fuse from the PCB
Ass’y. (Fig. 5)

●

Check for continuity using a multimeter as shown in
Fig. 6.

10-3. Checking Motor Capacitor

Remove the lead wires from the capacitor terminals,
and then place a probe on the capacitor terminals as
shown in Fig. 7. Observe the deflection of the pointer,
setting the resistance measuring range of the
multimeter to the maximum value.

The capacitor is “good” if the pointer bounces to a
great extent and then gradually returns to its original
position.

The range of deflection and deflection time differ
according to the capacity of the capacitor.

Fuse

PCB Ass’y

Fuse

Compressor motor
capacitor

Fan motor
capacitor

Multimeter

Fig. 5

Fig. 6

Fig. 7

52

11-1. Removing Air Intake Grille

(1) Hold both ends and pull forward to open the

air intake grille. (Fig. 1)

(2) Remove the metal clips connecting the unit and the

grille. First, with a screwdriver, loosen
the * marked screw a little at the right side clip
(DO NOT loosen it too much, otherwise, the screw
and small metal parts will fall off inside.), then press

on the stopper and pull off. (Fig. 2)
(3) Do the same procedure for the left metal clip.
(4) Unlatch the 2 tabs on the lower part of the grille to

take it off completely.

11. DISASSEMBLY PROCEDURE FOR INDOOR UNIT

IMPORTANT! Please Read Before Starting

Safety precautions for servicing the CEILING-MOUNTED indoor unit

Center latch

Air intake grille

Metal clip

*

Air intake
grille

Unit

For Floor Installation

Fig.1

Fig.2

●

Before attempting to replace heavy and bulky parts such as the evaporator and fan motor, disconnect the
indoor unit from the system and place it on the floor. Refer to the steps given below.

●

When checking or servicing the air intake grille, side panels, or electrical component box, first check that
power is completely disconnected. Pay utmost care that your working platform is stable enough. Also, do not
drop any replaced parts and tools on the floor.

53

11-2. Removing Side Panels

(1) Remove the 3 screws attaching the left side panel.

(Fig. 3)
(2) Note the position of the hook on the inside of the

left side panel. To disengage the hook from the slot,

slide down the panel for removal. (Fig. 3)
(3) Do the same procedure for the right side panel.

11-3. Access and Removal of

Electrical Component Box

(1) Remove the front screw with a screwdriver. (Fig. 4)
(2) Slide the lid out and up. (Fig. 4)
(3) Disconnect the wiring as necessary.
(4) Remove the 4 screws, then pull out the electrical

component box. (Fig. 5)

Side panel

Tapping screws
(4 × 10 mm)

Hook

Hook

Slot

Screw

Screw

Electrical component box

Screw

Connectors

Hazardous voltage can cause ELECTRIC
SHOCK or DEATH. Disconnect the power
or turn off circuit breaker before you start
checking or servicing.

WARNING

Fig.3

Fig.4

Fig.5

54

11-4. Removing Flap Motor

(1) Remove the 3 screws used to mount the top panel.

(Fig. 6)
(2) While unlatching the 2 tabs inside the back of the

top panel, lift the top panel diagonally in the

direction of the arrow.(Fig. 6)
(3) Remove the 2 screws to pull off the flap motor.

The arm and cam come off together with the motor.

(Fig. 7)

11-5. Removing Evaporator

(=Indoor Heat Exchange Coil)

(1) Remove the 7 screws used to mount the blades.

(Fig. 8)
(2) Lift the blades in the direction of the arrow.(Fig. 8)

Top panel

Flap
motor

Screw

Blade

Arm

Cam

Screw

Flap motor

Screw

Blades

Fig.6

Fig.7

Fig.8

55

(3) Remove the 6 screws of the front panel and pull it

toward you. (Fig. 9)

(4) Remove the 2 screws used to mount the

evaporator. (Fig. 10)
(5) Remove the rubber cap to pull the thermistor out of

the evaporator. (Fig. 10)
(6) Cut the plastic clamp securing the drain hose to the

front fan casing. (Fig. 10)

(7) The evaporator is built into the drain pan. Pull out

the drain pan together with the evaporator in the

direction of the arrow. (Fig. 10)

The foamed polystyrene drain pan is fragile: DO
NOT apply excessive force when removing it.

(8) The evaporator can be removed by sliding it out

from the drain pan in the direction of the arrow.

(Fig. 11)

Front panel

Screw

Plastic clamp

Drain pan

Screw

Rubber cap

Thermistor

Drain hose

Front
fan casing

Drain pan

Evaporator
(Indoor coil)

Mounting
plate

Mounting
plate

Fig.9

Fig.10

Fig.11

IMPORTANT

56

11-6. Removing Fan and Fan Motor

(1) Unlatch the 2 hooks on each side to take off the

front fan casing. (Fig. 12)

(2) Remove the 2 screws attaching the rear fan casing

and then pull the fan casing out.

(3) Insert a hex wrench in the fan boss and turn it

counterclockwise to loosen the centrifugal fan.

The fan can be removed by sliding it to the left.

(Fig. 14)

(4) Remove the 4 bolts to remove the fan motor from

the frame. (Fig. 15)

Hook

Hook

Front fan casing

Rear fan casing

Hex wrench
(3mm or 7/64")

Centrifugal fan

Bolts (M6)

Fan motor

Frame

Fig.12

Fig.13

Fig.14

Fig.15

S.A.C. - olgiate olona - printed in italy

R.D. 28 Reyrieux BP 131 - 01601 Trévoux CEDEX France

Tél. [phone] - Fax [phone]

R.C.S. Bourg-en-Bresse B 759 200 728