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18

CAUTION

Fig. 28a

Electric Wiring Diagram for 2-room-multi outdoor unit (GRF194MR5IAA)

Before replacing PCBs, turn off the power and check that all

lamps on the PCB are off before starting work. Electric shock

will occur if work is performed while the lamps are lit.

Electric Shock

YEL

YEL

BLU

BLK

WHT

BLU

BLK 
BLK 
BLK

BLK

BLK

BLK 
BLK

YEL

YEL

WHT

BLK 
BLK 
BLK 
BLK 
BLK

BLK

BLK

BLK 
BLK

YEL

PNK

(RED

)

WHT

WHT

RED

BLK

WHT

BLK

BLK

WHT

CH

CRANKCASE HEATER

FERRITE CORE

FC1,2

3

1

HEATER

(YEL

)

CN02

CH

WHT

WHT

RE1

RE2

RE1

++

U

GRN

/YEL

WHT

BLU

CM

EARTH

240V

AC220V

1

12

4

UNIT B

INDOOR 

4

2
1

GRN

/YEL

BLK

GRN

/YEL

WHT

GRN/YEL

TERMINAL

BASE

(8P

)

12

3

2
1
3

2
1

OPERATION CONDENSER

C0

TRANSISTOR

TR

DIODE

BRIDGE DIODE

BD

D

TH7

MVA,MVB

MECHANICAL VALVE

TH6

THERMISTOR(ROOM B NARROW PIPE)

THERMISTOR(ROOM B WIDE PIPE)

RED

CONTROL PCB

VW

UNIT A

INDOOR 

RE2

HIC+

W

W

HIC

-

YEL

GRY

+

+

HIC

+

HIC

-

2

2

1

1

(WHT

)

4

4

3

3

CN34

HIC1

HIC1

(WHT

)

6

6

5

57

7

CN01

8

8

9

9

10

10

2

2

1

1

(WHT

)

5

5

4

4

CN30

HIC2

HIC2

(WHT

)

8

8

7

7

10

10

CN02

11

11

(WHT

)

CN18

HIC3

HIC3

(WHT

)

CN03

BLK

1

1

BLK

2

2

FILTER PCB

HS

ORG

79

CN35

(WHT

)

3

1

5

SI

BRN

TERMINAL BASE

(3P

)

6

67

7

WHT

BLK

(WHT

)

PAM

PAM

CN23

4

45

5

WHT

BLK

(WHT

)

1

12

2

BLK

BLK

(WHT

)

CT

CT

(WHT

)

CN08

1

13

3

BLK

BLK

(WHT

)

PRY

PRY

(RED

)

CN21

WW

AC200-L2

CN29

BLK

YEL

YEL

BLK

YEL 
YEL

YEL

TH7

TH6

(RED

)

YEL

4
3
2
1

BTH

CN22

TH5

TH4

TH2

TH1

(BLK

)

DEF

BLU

CN05

BLU

3
1

DEF

WHT

ORG

BLU

BRN

YEL

RED

RED

BLU 
ORG

WHT

YEL

BRN

BD

C0

(BLK)

(WHT

)(

BLK

)

(WHT

)

(WHT

)

(

WHT

)

(RED

)

3

GRY

+

MC01

MC02

ORG

GRY

6

TH3

1

BLK

WHT

L2

L1

WW

G2

TR

D

HIC PCB

YEL

BLU

BRN

YEL

RED

WHT

YEL

+

5
4
3
2
1

CN37

MVA

MVA

6

(BLK

)(

RED

)

GRN

/YEL

GRN

/YEL

FC1

FC2

GRN

/YEL

W

WHT

RV

6

4

FMO

MMV

3
2
1

ATH

CN24

MVB

BRN

GRY

BLK

FMOTH

CN16

FMO

CN09

CN06

RV

MMV

CN36

CN13

CN19

COIL

 /GAIKI

COMP

1

3

1

57
3

1

2345

1

3

1

234

1

2

W

G1

GRY

WHT

W

DC280

(WHT

)

3
1

CN01

5

AC200-L1

DC280

-

AC200

W

DC280+

BLK

1

12

2

MVB

CN38

1

2345

SOLDERED TERMINAL

TERMINAL

TERMINAL BASE

CONNECTOR

REACTOR

THERMISTOR(ROOM A WIDE PIPE)

THERMISTOR(ROOM A NARROW PIPE)

THERMISTOR(COMPRESSOR TEMP)

THERMISTOR(OUTDOOR TEMP)

THERMISTOR(HEAT EXCHANGER)

W

BOARD-IN-WIRE

HEAT SINK

DEF

MAIN MOTOR OPERATED VALVE

4-WAY VALVE

FAN MOTOR

COMPRESSOR MOTOR

HS

RE1,2

TH5

TH4

TH3

TH2

TH1

DEFROST VALVE

MMV

RV

FMO

CM

DESCRIPTION

SYMBOLS

854

-

2

-

5269

-

183

-

00

-

2

ELECTRIC WIRING DIAGRAM

MULTIPLE INDOOR UNITS

HEAT-PUMP OUTDOOR UNIT FOR TWO-ROOM

Summary of Contents for GRF194MR5IAA

Page 1: ...Required for Installation 2 INSTALLA TION SITE SELECTION 3 2 1 Indoor Unit 2 2 Outdoor Unit 2 3 Outer Dimensions of Outdoor Unit 2 4 Diagram of Outdoor Unit Installation 3 INSTALLATION PROCESS 8 3 1 E...

Page 2: ...king 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 yo...

Page 3: ...utlet or A C workshop 1 4 Type of Copper Tube and Insulation Material If you wish to purchase these materials separately from a local source you will need 1 Deoxidized annealed copper tube for refrige...

Page 4: ...stricted air flow around the unit install the unit within the maximum elevation difference H1 H2 H3 above or below the outdoor unit and within a total tubing length L1 L2 L1 L2 L3 from the outdoor uni...

Page 5: ...n 17 m 6 35 6 35 9 52 Union 12 7 9 52 9 52 A B 94 124 types Outdoor unit Indoor unit 184 type Flare 9 52 Union 12 7 12 7 Flare 9 52 A joint for connecting tubes of different sizes More than 17 m Fig 2...

Page 6: ...52 C 94 124 types Outdoor unit Indoor unit 94 124 types 184 type Less than 17 m 6 35 6 35 9 52 9 52 9 52 6 35 9 52 A 9 52 B 9 52 C 94 124 type Outdoor unit Indoor unit 94 124 type 94 124 type GRF244MR...

Page 7: ...will not magnify operating noise or vibration Fasten in place with the anchor bolts M10 provide a base using concrete or similar material and ensure proper drainage select a location where there is n...

Page 8: ...ure below are spaces that are required in order to maintain performance Install in a location where the dimensions indicated by are ensured and where 2 or more faces of the unit are unobstructed In pr...

Page 9: ...own and pull it toward you Refer to 2 4 Diagram of Outdoor Unit Installation 3 Remove the tubing panel in order to attach covers as needed according to the number of indoor units Refer to 2 4 Diagram...

Page 10: ...ngth 3 5 Caution before Connecting Tubes Tightly a Be sure to apply a sealing cap or water proof tape to prevent dust or water from getting into the tubes before they are used b Be sure to apply refri...

Page 11: ...1 clamp approx every 120 cm Do not wind the armoring tape too tightly since this will decrease the heat insulation effect Also be sure the condensation drain hose splits away from the bundle and drip...

Page 12: ...is cycle is repeated until the room temperature is lowered to the target level During the heating cycle the direction of refrigerant flow is reversed by a 4 way valve As a result the condenser draws h...

Page 13: ...th pressure gauges to the service port on the Hi Lo B A C Service valve on narrow tube side Service valve on wide tube side With push pin Hex wrench nominal size 4 mm not provided Manifold gauge speci...

Page 14: ...in 6 With a hex wrench turn the valve stem on the nar row tube service valve counter clockwise by 90 degrees 1 4 turn for 10 seconds and then turn the stem clockwise to close it again 7 With a standar...

Page 15: ...le at the outdoor unit This work must be performed during cooling operation The refrigerant gas cannot be recovered during heating operation During winter or if the temperature sensor prevents cooling...

Page 16: ...nstructions 5 1 General Precautions on Wiring 1 Before wiring confirm the rated voltage of the unit as shown on its nameplate then carry out the wiring closely following the wiring diagram 2 Provide a...

Page 17: ...ly Single phase AC 220 240 V B CAUTION 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 5 3 Wiring Syst...

Page 18: ...ature sensor Humidity sensor BK BK Black W White R Red GRN Green Y Yellow BL Blue GY Gray Fig 27a INDOOR UNIT BK BK Control panel Terminal board Display receiver panel GRN Fan motor Flap motor W W W W...

Page 19: ...7 9 CN35 WHT 3 1 5 SI BRN TERMINAL BASE 3P 6 6 7 7 WHT BLK WHT PAM PAM CN23 4 4 5 5 WHT BLK WHT 1 1 2 2 BLK BLK WHT CT CT WHT CN08 1 1 3 3 BLK BLK WHT PRY PRY RED CN21 W W AC200 L2 CN29 BLK YEL YEL BL...

Page 20: ...PCB HS ORG 7 9 CN35 WHT 3 1 5 SI BRN TERMINAL BASE 3P 6 6 7 7 WHT BLK WHT PAM PAM CN23 4 4 5 5 WHT BLK WHT 1 1 2 2 BLK BLK WHT CT CT WHT CN08 1 1 3 3 BLK BLK WHT PRY PRY RED CN21 W W AC200 L2 CN29 BLK...

Page 21: ...it on the termi nal plate and fix it securely with the removed ter minal screw using a screwdriver For stranded wiring 1 Cut the wire end with a cutting pliers then strip the insulation to expose the...

Page 22: ...iring Instructions for the Outdoor Unit The below explanation uses model GRF244MR5IAA as an example With model GRF194MR5IAA there is no terminal block C Be sure to correctly align inter unit cables A...

Page 23: ...h unit If there is cold air mixed in with the warm air check the tubing connections again Checking tubing and wiring Perform the test run and check that operation is nor mal If there is an error in tu...

Page 24: ...tubing connections Drain connections are secure and water drains properly Putty has been used to close the hole in the wall All service valves are fully open Remote controller signals are being posit...

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