Hitachi RAM-90QH5 Service Manual

NO. 0371E

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

ROOM AIR CONDITIONER

OUTDOOR UNIT

APRIL 2007

Refrigeration & Air-Conditioning Division

SERVICE MANUAL

PM

REFER TO THE FOUNDATION MANUAL

TECHNICAL INFORMATION

FOR SERVICE PERSONNEL ONLY

CONTENTS

SPECIFICATIONS ------------------------------------------------------------------- 5

INSTALLATION --------------------------------------------------------------------- 16

CONSTRUCTION AND DIMENSIONAL DIAGRAM --------------------- 20

WIRING DIAGRAM ---------------------------------------------------------------- 21

MAIN PARTS COMPONENT --------------------------------------------------- 24

CIRCUIT DIAGRAM --------------------------------------------------------------- 25

BLOCK DIAGRAM ----------------------------------------------------------------- 29

BASIC MODE ----------------------------------------------------------------------- 31

REFRIGERATING CYCLE DIAGRAM --------------------------------------- 51

DESCRIPTION OF MAIN CIRCUIT OPERATION ----------------------- 52

TROUBLE SHOOTING ----------------------------------------------------------- 88

PARTS LIST AND DIAGRAM -------------------------------------------------- 94

After installation

(W)

(A)

COOLING CAPACITY

DC INVERTER FIVE SYSTEM MULTI

TYPE

MODEL

POWER SOURCE

TOTAL INPUT

TOTAL AMPERES

SPECIFICATIONS

RAM-90QH5

HEATING CAPACITY

DIMENSIONS (mm)

NET WEIGHT

1ø, 220 - 240V, 50/60Hz

W

H

D

(kg)

(kW)

(B.T.U.)

REFER TO THE SPECIFICATIONS PAGE

OUTDOOR UNIT

RAM-90QH5

RAM-90QH5

950

800

370

71

NOTE:
This manual describes only points that differ from
PM No. 0322E, PM No. 0355E and PM No. 0366E
for items not described in this manual.

– 1 –

SAFETY DURING REPAIR WORK

1. In order to disassemble and repair
the unit in question, be sure to
disconnect the power cord plug
from the power outlet before starting
the work.

2. If it is necessary to replace any parts, they should be replaced with respective genuine parts for the unit, and
the replacement must be effected in correct manner according to the instructions in the Service Manual of
the unit.

If the contacts of electrical parts
are defective, replace the
electrical parts without trying to
repair them.

3. After completion of repairs, the initial state
should be restored.

4. Lead wires should be connected and laid as
in the initial state.

5. Modification of the unit by user himself should
absolutely be prohibited.

6. Tools and measuring instruments for use in repairs or inspection should be accurately calibrated in advance.

7. In installing the unit having been repaired, be careful to prevent the occurence of any accident such as
electrical shock, leak of current, or bodily injury due to the drop of any part.

8. To check the insulation of the unit, measure the insulation resistance between the power cord plug and
grounding terminal of the unit. The insulation resistance should be 1M or more as measured by a 500V
DC megger.

9. The initial location of installation such as window, floor or the other should be checked for being and safe
enough to support the repaired unit again.
If it is found not so strong and safe, the unit should be installed at the initial location reinforced or at a new
location.

10. Any inflammable thing should never
be placed about the location of
installation.

11. Check the grounding to see whether
it is proper or not, and if it is found
improper, connect the grounding
terminal to the earth.

DANGER

First, I must disconnect
the power cord plug
from the power outlet.

– 2 –

WORKING STANDARDS FOR PREVENTING BREAKAGE OF SEMICONDUCTORS

1. Scope
The standards provide for items to be generally observed in carrying and handling semiconductors in relative
manufacturers during maintenance and handling thereof. (They apply the same to handling of abnormal goods
such as rejected goods being returned).

2. Object parts

(1) Micro computer
(2) Integrated circuits (IC)
(3) Field-effect transistors (FET)
(4) P.C. boards or the like on which the parts mentioned in (1) and (2) of this paragraph are equipped.

3. Items to be observed in handling

(1) Use a conductive container for carrying and storing of parts. (Even rejected goods should be handled in

the same way).

Fig. 1. Conductive Container

(2) When any part is handled uncovered (in counting, packing and the like), the handling person must always

use himself as a body earth. (Make yourself a body earth by passing one M ohm earth resistance through
a ring or bracelet).

(3) Be careful not to touch the parts with your clothing when you hold a part even if a body earth is being

taken.

(4) Be sure to place a part on a metal plate with grounding.

(5) Be careful not to fail to turn off power when you repair the printed circuit board. At the same time, try

to repair the printed circuit board on a grounded metal plate.

1M

Fig. 2. Body Earth

Body earth
(Elimik conductive band)

Clip for connection with a
grounding wire

IC

A conductive polyvinyl bag

IC

Conductive sponge

– 3 –

(6) Use a three wire type soldering iron including a grounding wire.

Bare copper wire (for body earth)

Working
table

Resistor of 1 M (1/2W)

Earth wire

Fig. 3. Grounding of the working table

2

Screw stop at the screwed
part using a rag plate

Soldering iron

Grounding
wire

Fig. 4. Grounding a soldering iron

Use a high insulation mode (100V, 10M or higher) when ordinary iron is to be used.

(7) In checking circuits for maintenance, inspection or some others, be careful not to have the test probes of the

measuring instrument shortcircuit a load circuit or the like.

Metal plate (of aluminium, stainless steel, etc.)

Staple

– 4 –

1. In quiet operation or stopping the operation, slight flowing noise of refrigerant in the refrigerating cycle is

heard occasionally, but this noise is not abnormal for the operation.

2. When it thunders near by, it is recommend to stop the operation and to disconnect the power cord plug

from the power outlet for safety.

3. The room air conditioner does not start automatically after recovery of the electric power failure for

preventing fuse blowing. Re-press START/STOP button after 3 minutes from when unit stopped.

4. If the room air conditioner is stopped by setting the temperature, or missoperation, and re-start in a moment,

there is occasion that the cooling and heating operation does not start for 3 minutes, it is not abnormal
and this is the result of the operation of IC delay circuit. This IC delay circuit ensures that there is no
danger of blowing fuse or damaging parts even if operation is restarted accidentally.

5. This room air conditioner should not be used at the cooling operation when the outside temperature is

below –10°C (14°F).

6. This room air conditioner (the reverse cycle) should not be used when the outside temperature is below

–15°C (5°F).
If the reverse cycle is used under this condition, the outside heat exchanger will be frosted and its
efficiency falls.

7. When the outside heat exchanger is frosted, the frost is melted by operating the hot gas system, it is not

trouble that at this time fan stops and the vapour may rise from the outside heat exchanger.

!

CAUTION

– 5 –

SPECIFICATIONS

MODEL

FAN MOTOR

FAN MOTOR CAPACITOR

FAN MOTOR PROTECTOR

COMPRESSOR

COMPRESSOR MOTOR CAPACITOR

OVERLOAD PROTECTOR

OVERHEAT PROTECTOR

FUSE (for MICROPROCESSOR)

POWER RELAY

POWER SWITCH

TEMPORARY SWITCH

SERVICE SWITCH

TRANSFORMER

VARISTOR

NOISE SUPPRESSOR

THERMOSTAT

REMOTE CONTROL SWITCH (LIQUID CRYSTAL)

138 W

NO

NO

NO

YES

YES

5.0A

G4A

NO

NO

YES

NO

450NR

YES

YES(IC)

NO

2700g

WITHOUT REFRIGERANT BECAUSE

COUPLING IS FLARE TYPE.

UNIT

PIPES

REFRIGERANT CHARGING
VOLUME
(Refrigerant 410A)

RAM-90QH5

JU1318D1

MAX. 75m

In case the pipe length is more than 30m, add refrigerant R410 at 15gram per every meter exceeds.

– 6 –

SPECIFICATIONS FOR INDOOR UNITS COMBINATION

OPERATION SCOPE

TYPE

DC INVERTER FIVE SYSTEM MULTI COOLING AND HEATING

MODEL OUTDOOR UNIT

PHESE/VOLTAGE/FREQUENCY

CIRCUIT AMPERES TO CONNECT (A)

COOLING

(FIVE UNITS)

CAPACITY (kW)

(B.T.U./h)

TOTAL INPUT (W)

EER (B.T.U./hW)

TOTAL AMPERES (A)

POWER FACTOR (%)

HEATING

(FIVE UNITS)

CAPACITY (kW)

(B.T.U./h)

TOTAL INPUT (W)

EER (B.T.U./hW)

TOTAL AMPERES (A)

POWER FACTOR (%)

MAXIMUM LENGTH OF PIPING

STANDARD

RAM-90QH5

1ø, 220 - 240V, 50/60Hz

30

9.00 (3.20 - 9.90)

30,720 (10,920 - 33,780)

2,360 (600 - 3,040)

13.02

10.8 - 9.9

99

11.00 (3.40 - 12.10)

37,540 (11,610 - 41,290)

2,460 (610 - 2,910)

15.26

11.3 - 10.4

99

MAX. 75m (FIVE UNIT TOTAL)

CE (EMC&LVD)

RAM-90QH5

MODEL

W

PACKING

(mm)

H

D

cu.ft.

1,073

867

510

16.61

78

GROSS WEIGHT (kg)

6.35DX5/9.52DX3/12.70X2

FLARENUTSIZE (SMALL/LARGE)

INDOOR SUCTION

TEMPERATURE (˚C)

COOLING OPERATION SCOPE

OUTDOOR SUCTION

TEMPERATURE (˚C)

INDOOR SUCTION

HUMIDITY (%)

DEHUMIDIFYING

OPERATION

HEATING OPERATION

SCOPE

16 - 32 –10 ~ 43 BELOW 80

16 - 32 –10 ~ 43 BELOW 80

BELOW 27 –15 ~ 23

—

– 7 –

DC INVERTER SYSTEM MULTI R.A.C.

RAM-90QH5

COOL / HEAT CAPACITY SPEC. FOR INDOOR UNITS
COMBINATIONS TO BE ABLE TO OPERATE SIMULTANEOUSLY

Whichever indoor units are installed, cooling and heating capacity depends on how many and which indoor units
are operating at that time.

12.6

2740

3.28

3.32

3.28

3.54

3.32

3.24

3.24

3.27

3.25

2710
2740
2120
2560
2780
2780
2750
2770

11.5

12.4 11.4

12.6 11.5

9.7 8.9

11.8 10.8

12.8 11.7

12.8 11.7

12.6 11.6

12.7 11.7

(Reference value)

5 ROOM MULTI-SPLIT INVERTER TYPE ROOM AIR CONDITIONER
POSSIBLE COMBINATION TO OPERATE (SAME TIME OPERATION)

– 8 –

RATING CONDITON (DRY BLUB / WET BULB)

COOLING

HEATING

INDOOR OUTDOOR

27 / 19 ˚C

20 / –˚C

35 / 24˚C

7 / 6˚C

1.88

1.88 3.22 3.22

1.65 2.85 2.85 2.85

1.56 2.69 2.69 4.06

1.8+3.5+3.5+5.0

1.15+2.30+2.30+3.25

9.00 2530

2.18 2.74 2.74 2.74

<REMARKS>
* ONE UNIT INDICATED ARE ONLY FOR ONE UNIT OPERATION WHEN TWO OR MORE INDOOR UNITS ARE CONNECTED.
* TWO UNITS INDICATED ARE ONLY FOR TWO UNITS OPERATION WHEN TWO OR MORE INDOOR UNITS ARE CONNECTED.
* THREE UNITS INDICATED ARE ONLY FOR THREE UNITS OPERATION WHEN THREE OR MORE INDOOR UNITS ARE CONNECTED.
* FOUR UNITS INDICATED ARE ONLY FOR FOUR UNITS OPERATION WHEN FOUR OR FIVE INDOOR UNITS ARE CONNECTED.

– 9 –

FIVE INVERTER SYSTEM MULTI R.A.C.

RAM-90QH5

INDOOR UNITS COMBINATIONS TO BE ABLE TO INSTALL

Two, three, four or five indoor units can be installed with one outdoor unit.
And total nominal cooling capacity should not be more than 15.5kW

Be sure to connect two or more indoor units to this outdoor unit. If not, condensed water may drop, resulting in
trouble.

INDOOR UNIT

MODEL

NOMINAL

COOLING

CAPACITY

(kW)

CAPACITY (kW)

at one unit operation

SUITABLE ROOM SIZE (m2)

at one unit operation

COOLING HEATING COOLING HEATING

RAK-18NH5
RAK-18NH6

1.8 1.00 - 2.50 1.10 - 3.20

8 - 12 9 - 11

RAK-25NH5
RAK-25NH6

2.5 1.00 - 2.80 1.10 - 4.70

11 - 17 14 - 18

RAF-25NH5

2.5 1.00 - 2.80 1.10 - 4.70

11 - 17 14 - 18

RAD-25NH5
RAD-25NH7

2.5 1.00 - 2.80 1.10 - 4.70

11 - 17 14 - 18

RAI-25NH5

2.5 1.00 - 2.80 1.10 - 4.70

11 - 17 14 - 18

RAK-35NH5
RAK-35NH6

3.5 1.00 - 3.90 1.10 - 5.80

16 - 24 17 - 22

RAF-35NH5 3.5 1.00 - 3.90 1.10 - 5.80

16 - 24 17 - 22

RAD-35NH5
RAD-35NH7

3.5 1.00 - 3.90 1.10 - 5.80

16 - 24 17 - 22

RAI-35NH5

3.5 1.00 - 3.90 1.10 - 5.80

16 - 24 17 - 22

RAK-50NH5
RAK-50NH6

5.0 1.00 - 5.60 1.10 - 7.20

23 - 34 23 - 29

RAF-50NH5

5.0 1.00 - 5.60 1.10 - 7.20

23 - 34 23 - 29

RAI-50NH5

5.0 1.00 - 5.60 1.10 - 7.20

23 - 34 23 - 29

RAD-50NH7

5.0 1.00 - 5.60 1.10 - 7.50

23 - 34 23 - 29

RAK-65NH5

6.0 1.00 - 6.50 1.10 - 9.00

27 - 41 25 - 32

– 10 –

QUADRUPLE SYSTEM MULTI R.A.C.

RAM-90QH5

INDOOR UNITS COMBINATIONS TO BE ABLE TO INSTALL

No. 1 No. 2 No. 3 No. 4 No. 5

6.35/9.52D 6.35/9.52D 6.35/9.52D 6.35/12.7D 6.35/ 12.7D

1.8+1.8 ( 8 ~ 12 ) + ( 8 ~ 12 ) 1.8 1.8

1.8+2.5 ( 8 ~ 12 ) + ( 11 ~ 17 ) 1. 8 2.5

1.8+3.5 ( 8 ~ 12 ) + ( 16 ~ 24 ) 1.8 3.5

1.8+5.0 ( 8 ~ 12 ) + ( 23 ~ 34 ) 1.8 5.0

1.8+6.0 ( 8 ~ 12 ) + ( 27 ~ 41 ) 1.8 6.0

2.5+2.5 ( 11 ~ 17 ) + ( 11 ~ 17 ) 2.5 2.5

2.5+3.5 ( 11 ~ 17 ) + ( 16 ~ 24 ) 2.5 3.5

2.5+5.0 ( 11 ~ 17 ) + ( 23 ~ 34 ) 2.5 5.0

2.5+6.0 ( 11 ~ 17 ) + ( 25 ~ 39 ) 2.5 6.0

3.5+3.5 ( 16 ~ 24 ) + ( 16 ~ 24 ) 3.5 3.5

3.5+5.0 ( 15 ~ 23 ) + ( 21 ~ 32 ) 3.5 5.0

3.5+6.0 ( 14 ~ 21 ) + ( 24 ~ 36 ) 3.5 6.0

5.0+5.0 ( 19 ~ 29 ) + ( 19 ~ 29 ) 5.0 5.0

5.0+6.0 ( 18 ~ 28 ) + ( 21 ~ 32 ) 5.0 6.0

6.0+6.0 ( 20 ~ 31 ) + ( 20 ~ 31 ) 6.0 6.0

1.8+1.8+1. 8 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) 1.8 1.8 1.8

1.8+1.8+2. 5 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 11 ~ 17 ) 1.8 1.8 2.5

1.8+1.8+3. 5 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 16 ~ 24 ) 1.8 1.8 3.5

1.8+1.8+5. 0 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 23 ~ 34 ) 1.8 1.8 5.0

1.8+1.8+6. 0 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 26 ~ 39 ) 1.8 1.8 6.0

1.8+2.5+2. 5 ( 8 ~ 12 ) + ( 11 ~ 17 ) + ( 11 ~ 17 ) 1.8 2.5 2.5

1.8+2.5+3. 5 ( 8 ~ 12 ) + ( 11 ~ 17 ) + ( 16 ~ 24 ) 1.8 2.5 3.5

1.8+2.5+5. 0 ( 8 ~ 12 ) + ( 11 ~ 17 ) + ( 22 ~ 33 ) 1.8 2.5 5.0

1.8+2.5+6. 0 ( 7 ~ 11 ) + ( 10 ~ 15 ) + ( 24 ~ 36 ) 1.8 2.5 6.0

1.8+3.5+3. 5 ( 8 ~ 12 ) + ( 16 ~ 24 ) + ( 16 ~ 24 ) 1.8 3.5 3.5

1.8+3.5+5. 0 ( 7 ~ 11 ) + ( 14 ~ 21 ) + ( 20 ~ 30 ) 1.8 3.5 5.0

1.8+3.5+6. 0 ( 7 ~ 10 ) + ( 13 ~ 19 ) + ( 22 ~ 33 ) 1.8 3.5 6.0

1.8+5.0+5. 0 ( 6 ~ 10 ) + ( 17 ~ 26 ) + ( 17 ~ 26 ) 1.8 5.0

1.8+5.0+6. 0 ( 6 ~ 9 ) + ( 16 ~ 24 ) + ( 19 ~ 29 ) 1.8 5.0

1.8+6.0+6. 0 ( 5 ~ 8 ) + ( 18 ~ 27 ) + ( 18 ~ 27 ) 1.8 6.0

2.5+2.5+2. 5 ( 11 ~ 17 ) + ( 11 ~ 17 ) + ( 11 ~ 17 ) 2.5 2.5 2.5

2.5+2.5+3. 5 ( 11 ~ 17 ) + ( 11 ~ 17 ) + ( 16 ~ 24 ) 2.5 2.5 3.5

2.5+2.5+5. 0 ( 10 ~ 16 ) + ( 10 ~ 16 ) + ( 20 ~ 31 ) 2.5 2.5 5.0

2.5+2.5+6. 0 ( 9 ~ 14 ) + ( 9 ~ 14 ) + ( 22 ~ 34 ) 2.5 2.5 6.0

2.5+3.5+3. 5 ( 11 ~ 16 ) + ( 15 ~ 23 ) + ( 15 ~ 23 ) 2.5 3.5 3.5

2.5+3.5+5. 0 ( 9 ~ 14 ) + ( 13 ~ 20 ) + ( 19 ~ 28 ) 2.5 3.5 5.0

2.5+3.5+6. 0 ( 9 ~ 13 ) + ( 12 ~ 18 ) + ( 20 ~ 31 ) 2.5 3.5 6.0

2.5+5.0+5. 0 ( 8 ~ 12 ) + ( 16 ~ 25 ) + ( 16 ~ 25 ) 2.5 5.0 5.0

2.5+5.0+6. 0 ( 8 ~ 12 ) + ( 15 ~ 23 ) + ( 18 ~ 28 ) 2.5 5.0 6.0

2.5+6.0+6. 0 ( 7 ~ 11 ) + ( 17 ~ 26 ) + ( 17 ~ 26 ) 2.5 6.0 6.0

3.5+3.5+3. 5 ( 14 ~ 21 ) + ( 14 ~ 21 ) + ( 14 ~ 21 ) 3.5 3.5 3.5

3.5+3.5+5. 0 ( 12 ~ 18 ) + ( 12 ~ 18 ) + ( 17 ~ 26 ) 3.5 3.5 5.0

3.5+3.5+6. 0 ( 11 ~ 17 ) + ( 11 ~ 17 ) + ( 19 ~ 29 ) 3.5 3.5 6.0

3.5+5.0+5. 0 ( 10 ~ 16 ) + ( 15 ~ 23 ) + ( 15 ~ 23 ) 3.5 5.0 5.0

3.5+5.0+6. 0 ( 10 ~ 15 ) + ( 14 ~ 21 ) + ( 17 ~ 26 ) 3.5 5.0 6.0

3.5+6.0+6. 0 ( 9 ~ 14 ) + ( 16 ~ 24 ) + ( 16 ~ 24 ) 3.5 6.0 6.0

5.0+5.0+5. 0 ( 14 ~ 21 ) + ( 14 ~ 21 ) + ( 14 ~ 21 ) 5.0 5.0 5.0

1.8+1.8+1. 8+1.8 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) 1.8 1.8 1.8 1.8

1.8+1.8+1. 8+2.5 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 11 ~ 17 ) 1.8 1.8 1.8 2.5

1.8+1.8+1. 8+3.5 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 16 ~ 24 ) 1.8 1.8 1.8 3.5

1.8+1.8+1. 8+5.0 ( 7 ~ 11 ) + ( 7 ~ 11 ) + ( 7 ~ 11 ) + ( 20 ~ 30 ) 1.8 1.8 1.8 5.0

1.8+1.8+1. 8+6.0 ( 6 ~ 10 ) + ( 6 ~ 10 ) + ( 6 ~ 10 ) + ( 22 ~ 33 ) 1.8 1.8 1.8 6.0

1.8+1.8+2. 5+2.5 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 11 ~ 17 ) + ( 11 ~ 17 ) 1.8 1.8 2.5 2.5

1.8+1.8+2. 5+3.5 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 11 ~ 16 ) + ( 15 ~ 23 ) 1.8 1.8 2.5 3.5

1.8+1.8+2. 5+5.0 ( 7 ~ 10 ) + ( 7 ~ 10 ) + ( 9 ~ 14 ) + ( 19 ~ 28 ) 1.8 1.8 2.5 5.0

1.8+1.8+2. 5+6.0 ( 6 ~ 9 ) + ( 6 ~ 9 ) + ( 8 ~ 13 ) + ( 20 ~ 31 ) 1.8 1.8 2.5 6.0

1.8+1.8+3. 5+3.5 ( 7 ~ 11 ) + ( 7 ~ 11 ) + ( 14 ~ 20 ) + ( 14 ~ 20 ) 1.8 1.8 3.5 3.5

1.8+1.8+3. 5+5.0 ( 6 ~ 9 ) + ( 6 ~ 9 ) + ( 12 ~ 18 ) + ( 17 ~ 26 ) 1.8 1.8 3.5 5.0

1.8+1.8+3. 5+6.0 ( 6 ~ 9 ) + ( 6 ~ 9 ) + ( 11 ~ 17 ) + ( 19 ~ 28 ) 1.8 1.8 3.5 6.0

1.8+1.8+5. 0+5.0 ( 5 ~ 8 ) + ( 5 ~ 8 ) + ( 15 ~ 23 ) + ( 15 ~ 23 ) 1.8 1.8 5.0 5.0

1.8+1.8+5. 0+6.0 ( 5 ~ 8 ) + ( 5 ~ 8 ) + ( 14 ~ 21 ) + ( 17 ~ 26 ) 1.8 1.8 5.0 6.0

1.8+2.5+2. 5+2.5 ( 8 ~ 12 ) + ( 11 ~ 17 ) + ( 11 ~ 17 ) + ( 11 ~ 17 ) 1.8 2.5 2.5 2.5

1.8+2.5+2. 5+3.5 ( 7 ~ 11 ) + ( 10 ~ 15 ) + ( 10 ~ 15 ) + ( 14 ~ 21 ) 1.8 2.5 2.5 3.5

1.8+2.5+2. 5+5.0 ( 6 ~ 10 ) + ( 9 ~ 13 ) + ( 9 ~ 13 ) + ( 17 ~ 26 ) 1.8 2.5 2.5 5.0

1.8+2.5+2. 5+6.0 ( 6 ~ 9 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 19 ~ 29 ) 1.8 2.5 2.5 6.0

1.8+2.5+3. 5+3.5 ( 6 ~ 10 ) + ( 9 ~ 14 ) + ( 13 ~ 19 ) + ( 13 ~ 19 ) 1.8 2.5 3.5 3.5

1.8+2.5+3. 5+5.0 ( 6 ~ 9 ) + ( 8 ~ 12 ) + ( 11 ~ 17 ) + ( 16 ~ 24 ) 1.8 2.5 3.5 5.0

1.8+2.5+3. 5+6.0 ( 5 ~ 8 ) + ( 7 ~ 11 ) + ( 10 ~ 16 ) + ( 18 ~ 27 ) 1.8 2.5 3.5 6.0

1.8+2.5+5. 0+5.0 ( 5 ~ 8 ) + ( 7 ~ 11 ) + ( 14 ~ 22 ) + ( 14 ~ 22 ) 1.8 2.5 5.0 5.0

1.8+2.5+5. 0+6.0 ( 5 ~ 8 ) + ( 7 ~ 10 ) + ( 13 ~ 20 ) + ( 16 ~ 24 ) 1.8 2.5 5.0 6.0

1.8+3.5+3. 5+3.5 ( 6 ~ 9 ) + ( 12 ~ 18 ) + ( 12 ~ 18 ) + ( 12 ~ 18 ) 1.8 3.5 3.5 3.5

1.8+3.5+3. 5+5.0 ( 5 ~ 8 ) + ( 10 ~ 16 ) + ( 10 ~ 16 ) + ( 15 ~ 22 ) 1.8 3.5 3.5 5.0

1.8+3.5+3. 5+6.0 ( 5 ~ 8 ) + ( 10 ~ 14 ) + ( 10 ~ 14 ) + ( 17 ~ 26 ) 1.8 3.5 3.5 6.0

1.8+3.5+5. 0+5.0 ( 5 ~ 7 ) + ( 9 ~ 14 ) + ( 13 ~ 20 ) + ( 13 ~ 20 ) 1.8 3.5 5.0 5.0

2.5+2.5+2. 5+2.5 ( 10 ~ 16 ) + ( 10 ~ 16 ) + ( 10 ~ 16 ) + ( 10 ~ 16 ) 2.5 2.5 2.5 2.5

2.5+2.5+2. 5+3.5 ( 9 ~ 14 ) + ( 9 ~ 14 ) + ( 9 ~ 14 ) + ( 13 ~ 20 ) 2.5 2.5 2.5 3.5

2.5+2.5+2. 5+5.0 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 16 ~ 25 ) 2.5 2.5 2.5 5.0

2.5+2.5+2. 5+6.0 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 18 ~ 28 ) 2.5 2.5 2.5 6.0

2.5+2.5+3. 5+3.5 ( 9 ~ 13 ) + ( 9 ~ 13 ) + ( 12 ~ 18 ) + ( 12 ~ 18 ) 2.5 2.5 3.5 3.5

2.5+2.5+3. 5+5.0 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 11 ~ 16 ) + ( 15 ~ 23 ) 2.5 2.5 3.5 5.0

2.5+2.5+3. 5+6.0 ( 7 ~ 11 ) + ( 7 ~ 11 ) + ( 10 ~ 15 ) + ( 17 ~ 26 ) 2.5 2.5 3.5 6.0

2.5+2.5+5. 0+5.0 ( 7 ~ 10 ) + ( 7 ~ 10 ) + ( 14 ~ 21 ) + ( 14 ~ 21 ) 2.5 2.5 5.0 5.0

2.5+3.5+3. 5+3.5 ( 8 ~ 12 ) + ( 11 ~ 17 ) + ( 11 ~ 17 ) + ( 11 ~ 17 ) 2.5 3.5 3.5 3.5

2.5+3.5+3. 5+5.0 ( 7 ~ 11 ) + ( 10 ~ 15 ) + ( 10 ~ 15 ) + ( 14 ~ 21 ) 2.5 3.5 3.5 5.0

2.5+3.5+3. 5+6.0 ( 7 ~ 10 ) + ( 9 ~ 14 ) + ( 9 ~ 14 ) + ( 16 ~ 24 ) 2.5 3.5 3.5 6.0

3.5+3.5+3. 5+3.5 ( 10 ~ 16 ) + ( 10 ~ 16 ) + ( 10 ~ 16 ) + ( 10 ~ 16 ) 3.5 3.5 3.5 3.5

3.5+3.5+3. 5+5.0 ( 9 ~ 14 ) + ( 9 ~ 14 ) + ( 9 ~ 14 ) + ( 13 ~ 20 ) 3.5 3.5 3.5 5.0

POSSIBLE CO MBINATIONS

TO INSTALL (kW)

TW

OUN

I

TS

(

VALVE DIAMETER

)

(mm)

SUITABLE ROO M SIZE

TO INSTALL

(

m

2

)

CONNECTING POSIT ION ON

OUTDOOR UNIT

– 11 –

2.5, 3.5, 4.0, 5.0 & 6.0 means indoor units cooling capacity class.
(1) Marking

: needs flare adapter (9.52 ➝ 12.7D): Part No. TA261D-4 001
: needs flare adapter (12.7 ➝ 9.52D): Part No. TA261D-6 002

(2) Suitable room size is determined based on the conditions below:

• Climate is in the temperate zone like Tokyo, Japan.

• For usual residential use.

• Smaller figure is for light construction which means light thermally sealed.

• Larger figure is for heavy constructions, which means well thermally sealed.

1.8+1.8+1. 8+1.8+1.8 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) 1.8 1.8 1.8 1.8 1.8

1.8+1.8+1. 8+1.8+2.5 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 11 ~ 16 ) 1.8 1.8 1.8 1.8 2.5

1.8+1.8+1. 8+1.8+3.5 ( 7 ~ 10 ) + ( 7 ~ 10 ) + ( 7 ~ 10 ) + ( 7 ~ 10 ) + ( 13 ~ 20 ) 1.8 1.8 1.8 1.8 3.5

1.8+1.8+1. 8+1.8+5.0 ( 6 ~ 9 ) + ( 6 ~ 9 ) + ( 6 ~ 9 ) + ( 6 ~ 9 ) + ( 17 ~ 25 ) 1.8 1.8 1.8 1.8 5.0

1.8+1.8+1. 8+1.8+6.0 ( 6 ~ 8 ) + ( 6 ~ 8 ) + ( 6 ~ 8 ) + ( 6 ~ 8 ) + ( 19 ~ 28 ) 1.8 1.8 1.8 1.8 6.0

1.8+1.8+1. 8+2.5+2.5 ( 7 ~ 11 ) + ( 7 ~ 11 ) + ( 7 ~ 11 ) + ( 10 ~ 15 ) + ( 10 ~ 15 ) 1.8 1.8 1.8 2.5 2.5

1.8+1.8+1. 8+2.5+3.5 ( 6 ~ 10 ) + ( 6 ~ 10 ) + ( 6 ~ 10 ) + ( 9 ~ 14 ) + ( 13 ~ 19 ) 1.8 1.8 1.8 2.5 3.5

1.8+1.8+1. 8+2.5+5.0 ( 6 ~ 9 ) + ( 6 ~ 9 ) + ( 6 ~ 9 ) + ( 8 ~ 12 ) + ( 16 ~ 24 ) 1.8 1.8 1.8 2.5 5.0

1.8+1.8+1. 8+2.5+6.0 ( 5 ~ 8 ) + ( 5 ~ 8 ) + ( 5 ~ 8 ) + ( 7 ~ 11 ) + ( 18 ~ 27 ) 1.8 1.8 1.8 2.5 6.0

1.8+1.8+1. 8+3.5+3.5 ( 6 ~ 9 ) + ( 6 ~ 9 ) + ( 6 ~ 9 ) + ( 12 ~ 18 ) + ( 12 ~ 18 ) 1.8 1.8 1.8 3.5 3.5

1.8+1.8+1. 8+3.5+5.0 ( 5 ~ 8 ) + ( 5 ~ 8 ) + ( 5 ~ 8 ) + ( 10 ~ 16 ) + ( 15 ~ 22 ) 1.8 1.8 1.8 3.5 5.0

1.8+1.8+1. 8+3.5+6.0 ( 5 ~ 8 ) + ( 5 ~ 8 ) + ( 5 ~ 8 ) + ( 10 ~ 15 ) + ( 16 ~ 25 ) 1.8 1.8 1.8 3.5 6.0

1.8+1.8+1. 8+5.0+5.0 ( 5 ~ 7 ) + ( 5 ~ 7 ) + ( 5 ~ 7 ) + ( 13 ~ 20 ) + ( 13 ~ 20 ) 1.8 1.8 1.8 5.0 5.0

1.8+1.8+2. 5+2.5+2.5 ( 7 ~ 10 ) + ( 7 ~ 10 ) + ( 9 ~ 14 ) + ( 9 ~ 14 ) + ( 9 ~ 14 ) 1.8 1.8 2.5 2.5 2.5

1.8+1.8+2. 5+2.5+3.5 ( 6 ~ 9 ) + ( 6 ~ 9 ) + ( 8 ~ 13 ) + ( 8 ~ 13 ) + ( 12 ~ 18 ) 1.8 1.8 2.5 2.5 3.5

1.8+1.8+2. 5+2.5+5.0 ( 5 ~ 8 ) + ( 5 ~ 8 ) + ( 8 ~ 11 ) + ( 8 ~ 11 ) + ( 15 ~ 23 ) 1.8 1.8 2.5 2.5 5.0

1.8+1.8+2. 5+2.5+6.0 ( 5 ~ 8 ) + ( 5 ~ 8 ) + ( 7 ~ 11 ) + ( 7 ~ 11 ) + ( 17 ~ 26 ) 1.8 1.8 2.5 2.5 6.0

1.8+1.8+2. 5+3.5+3.5 ( 6 ~ 9 ) + ( 6 ~ 9 ) + ( 8 ~ 12 ) + ( 11 ~ 17 ) + ( 11 ~ 17 ) 1.8 1.8 2.5 3.5 3.5

1.8+1.8+2. 5+3.5+5.0 ( 5 ~ 8 ) + ( 5 ~ 8 ) + ( 7 ~ 11 ) + ( 10 ~ 15 ) + ( 14 ~ 21 ) 1.8 1.8 2.5 3.5 5.0

1.8+1.8+3. 5+3.5+3.5 ( 5 ~ 8 ) + ( 5 ~ 8 ) + ( 10 ~ 15 ) + ( 10 ~ 15 ) + ( 10 ~ 15 ) 1.8 1.8 3.5 3.5 3.5

1.8+2.5+2. 5+2.5+2.5 ( 6 ~ 9 ) + ( 9 ~ 13 ) + ( 9 ~ 13 ) + ( 9 ~ 13 ) + ( 9 ~ 13 ) 1.8 2.5 2.5 2.5 2.5

1.8+2.5+2. 5+2.5+3.5 ( 6 ~ 9 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 11 ~ 17 ) 1.8 2.5 2.5 2.5 3.5

1.8+2.5+2. 5+2.5+5.0 ( 5 ~ 8 ) + ( 7 ~ 11 ) + ( 7 ~ 11 ) + ( 7 ~ 11 ) + ( 14 ~ 22 ) 1.8 2.5 2.5 2.5 5.0

1.8+2.5+2. 5+2.5+6.0 ( 5 ~ 7 ) + ( 7 ~ 10 ) + ( 7 ~ 10 ) + ( 7 ~ 10 ) + ( 16 ~ 24 ) 1.8 2.5 2.5 2.5 6.0

1.8+2.5+2. 5+3.5+3.5 ( 5 ~ 8 ) + ( 7 ~ 11 ) + ( 7 ~ 11 ) + ( 10 ~ 16 ) + ( 10 ~ 16 ) 1.8 2.5 2.5 3.5 3.5

1.8+2.5+2. 5+3.5+5.0 ( 5 ~ 7 ) + ( 7 ~ 10 ) + ( 7 ~ 10 ) + ( 9 ~ 14 ) + ( 13 ~ 20 ) 1.8 2.5 2.5 3.5 5.0

1.8+2.5+3. 5+3.5+3.5 ( 5 ~ 8 ) + ( 7 ~ 10 ) + ( 10 ~ 15 ) + ( 10 ~ 15 ) + ( 10 ~ 15 ) 1.8 2.5 3.5 3.5 3.5

2.5+2.5+2. 5+2.5+2.5 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) 2.5 2.5 2.5 2.5 2.5

2.5+2.5+2. 5+2.5+3.5 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 11 ~ 16 ) 2.5 2.5 2.5 2.5 3.5

2.5+2.5+2. 5+2.5+5.0 ( 7 ~ 10 ) + ( 7 ~ 10 ) + ( 7 ~ 10 ) + ( 7 ~ 10 ) + ( 14 ~ 21 ) 2.5 2.5 2.5 2.5 5.0

2.5+2.5+2. 5+3.5+3.5 ( 7 ~ 11 ) + ( 7 ~ 11 ) + ( 7 ~ 11 ) + ( 10 ~ 15 ) + ( 10 ~ 15 ) 2.5 2.5 2.5 3.5 3.5

2.5+2.5+3. 5+3.5+3.5 ( 7 ~ 10 ) + ( 7 ~ 10 ) + ( 9 ~ 14 ) + ( 9 ~ 14 ) + ( 9 ~ 14 ) 2.5 2.5 3.5 3.5 3.5

– 12 –

– 13 –

– 14 –

– 15 –

Fig. 6-1

Fig. 6-2

Fig. 6-3

Lo Hi

Stop valve

Charge hose A

Charge hose B

Stop
valve

Vacuum pump adapter

Valve cap

Valve cap

Valve cap of valve core

Valve cap

Valve core

Valve cap of
valve core

Stopper

O-Ring

Pipe

Pipe

Seal cap

Flare nut

Spindle

When the meter reaches -101KPa (-76cmHg) during
pumping, fully tighten the shuttle.

Air purging by vacuum pump

Closed

Vacuum pump

R410A
Manifold valve

Be sure the stop valve is always fully opened.

The refrigerant channel is opened so that the refrigerant
will flow from the outdoor unit into the indoor unit.

Meter showing pressure

Remove the valve cap from the service valves located at both the
large and small pipe rims

➤

Connect the charging hose A to the large service valve.

After connecting the vacuum suction pump adaptor, connect the
charging hose B to the adaptor.

During relocation or re-installed, there is a possibility of electric-powered
valve to be closed. Should the electric-powered valve be closed, even
with air purging being conducted, certain amount of air is still trapped
within that area, hence, there is a need to open up the electric-powered
valve to do an air purging. Under such circumstances, before using
the vacuum-suction pump, the main power supply (LN terminal) should
be connected to enable a complete opening up of the valve. After
connecting the power supply for approximately 90 seconds, the valve
will be fully opened, after which disconnect the power supply and start
using the vacuum suction pump.
(Refer to “Power Supply Terminal Connections” in regards to the LN
terminal)
CAUTION: Ingress of air during the operating cycle may cause increase
in pressure and other breakdowns.

Switch off the outdoor unit’s power supply

Shut the manifold valve handle Hi, handle Lo need to be open and
operate the vacuum pump for approximately 60 minutes.

Upon a full shut of manifold valve handle Lo, the vacuum pump can
be stopped.

Check to ensure that there is no gas leakage.

After removing the charging hose A, rotate the service valve spindles
in an anti-clockwise direction to fully open for both valves.

Reinstall the cap nuts to their original positions and tighten them to
their specified torque.

Disconnect the charge hose from the service valve.

Tighten the valve cap of valve core.
[Torque 12.3 - 15.7 N·m (125 - 160 kgf·cm)]

Fix the valve cap to the spindles of each large and small dia. pipe
side service valves.

Tighten the valve cap of the spindle.
[Torque 19.6 - 24.5 N·m (200 - 250 kgf·cm)]

4. Air purging by using vacuum pump

➤

➤

➤

➤

➤

➤

➤

➤

➤

➤

➤

➤

!

CAUTION

1. Be sure to use the vacuum pump, vacuum pump adapter and manifold gauge and refer to their instruction manuals beforehand.

2. Ascertain that the vacuum pump is filled with oil to the level designated on the oil gauge.

3. After closed the ball valve of charge hose, it should be disconnected at service port side and refrigerant cylinder side at first.
Next, after discharging the remained gas in the charge hose by opening the ball valve a little, disconnect it at manifold gauge side. You
can prevent sudden release of refrigerant by connecting the ball valve to service port. And you can work more safety.

– 16 –

INSTALLATION

PIPE LENGTH
(1) Total 75m maximum pipe length.
(2) Pipe length for one indoor unit : maximum 25m.

: minimum 5m.

HIGHT DIFFERENCE
(1) Height : maximum ± 10m
(2) Height difference between each indoor unit ≤ 5m.

 To the outdoor unit, up to five indoor units can be connected until the total value of capacity to 15.5kW.
 Make sure to connect two or more indoor units.

L2

L1

L3

Indoor unit 3L4Indoor unit 4L5Indoor unit 5Indoor unit 2

Indoor unit 1

Outdoor unit

Indoor unit 2

Indoor unit 3

Indoor unit 4

Indoor unit 5

Indoor unit 1

5m

– 17 –

MODEL: RAM-90QH5

Indoor unit 5 Indoor unit 4

Indoor unit 3

Indoor unit 2

Indoor unit 1

Outdoor unit pipe connection port

Dimension of Mounting Stand

of the Outdoor unit

(unit: mm)

700

One unit of 1.8kW, 2.5kW, 3.5kW, 5.0kW or 6.0kW
(5.0kW, 6.0kW unit: Optional flare adaptor for piping is necessary.)

One unit of 1.8kW, 2.5kW, 3.5kW, 5.0kW or 6.0kW
(5.0kW, 6.0kW unit: Optional flare adaptor for piping is necessary.)

One unit of 1.8kW, 2.5kW, 3.5kW, 5.0kW or 6.0kW
(5.0kW, 6.0kW unit: Optional flare adaptor for piping is necessary.)

One unit of 1.8kW, 2.5kW, 3.5kW, 5.0kW, 6.0kW or 7.1kW
(1.8-3.5kW unit: Optional flare adaptor for piping is necessary.)

One unit of 1.8kW, 2.5kW, 3.5kW, 5.0kW, 6.0kW or 7.1kW
(1.8-3.5kW unit: Optional flare adaptor for piping is necessary.)

Face this side (suction
side) of the unit to the wall.

Remove side cover when
connecting the piping and
connecting cord.

Pull downward

13

70

23

44015403

600

175

Flare adaptor for piping

The flare adaptor for piping is
required depending on combination
of indoor units.

•ø9.52 (3/8”) ➝ ø 12.7 (1/2”)
Parts number TA261D-4 001

•ø12.7(1/2”) ➝ ø 9.52 (3/8”)
Parts number TA261D-6 002

•ø12.7(1/2”) ➝ ø 15.88(5/8”)
Parts number TA261D-6 003

– 18 –

BASE

DRAIN PIPE

A

DRAIN PIPE

BUSH

100 mm ABOVE

10

11

– 19 –

Terminal A and B at Indoor unit 4 and 5 is for 7 kw and 8 kw indoor which using high voltage motor.

Arrange power cord so they do
not touch service valve.

CAUTION

!

Grounding rod (optional)
(Earth wire and grounding rod are not supplied. Please use optional items
below.)

Type of grounding rod

SP-EB-2

Length

900mm

C1 D1C2 D2C3 D3C4 D4A4 B4C5 D5A5 B5

L N

AC200-240V

INDOOR 1INDOOR 2INDOOR 3INDOOR 4INDOOR 4INDOOR 5INDOOR 5

Connect the
earth cord

After remove
the screw
and cover, put
the connecting
cords and fix
the cover with
screw

Wiring Pattern

Indoor Unit

Indoor unit No. 5 Indoor unit No. 4 Indoor unit No. 3 Indoor unit No. 2 Indoor unit No. 1

Screw for ground, earth screw

Screw for ground, earth screw

Terminal
board

Terminal
board

Terminal
board

Terminal
board

Terminal
board

Terminal
board

Terminal
board

Terminal
board

Terminal
board

Terminal
board

Terminal
board

Terminal
board

Terminal
board

Terminal
board

Terminal
board

Power cord

CD

D1C1

CD

D2C2

CD

C3

D3

CD

C4

D4

AB

B4A4

CD

C5 D5

AB

A5 B5

LN

Screw for ground, earth screw

Screw for ground, earth screw

Screw for ground, earth screw

Screw for ground, earth screw

Green-and­Yellow

Green-and­Yellow

Green-and­Yellow

Green-and­Yellow

Green-and­Yellow

Green-and­Yellow

Screw for ground, earth screw

For Indoor unit No. 1

Screw for ground, earth screw

For Indoor unit No. 2

Screw for ground, earth screw

For Indoor unit No. 3

Screw for ground, earth screw

For Indoor unit No. 4

Screw for ground, earth screw

For Indoor unit No. 5

Fig. 1

Outdoor Unit

RAM-90QH5

– 20 –

CONSTRUCTION AND DIMENSIONAL DIAGRAM

MODEL RAM-90QH5

Service space

MODEL RAM-90QH5

WIRING DIAGRAM

– 21 –

POWER SOURCE
AC220 - 240V
50/60Hz

TERMINAL
BOARD

INDOOR 5

INDOOR 5

INDOOR 4

INDOOR 2

(BLU)

RED GRY

WHT BLK

INDOOR 4

INDOOR 3

Io P

P.W.B. CAPA

P.W.B. IPM

BOARD

TAB 01 TAB 02

– 23 –

COMPRESSOR MOTOR

Compressor Motor Specifications

MODEL

COMPRESSOR MODEL

PHASE SINGLE

RATED VOLTAGE AC 220 ~ 240 V

RATED FREQUENCY 50/60 Hz

POLE NUMBER 4

CONNECTION

20°C

(68°F)

75°C

(167°F)

( )

RESISTANCE VALUE

0.410

0.397

0.390

RAM-90QH5

JU1318D1

WHITE(U)

(W)

(V)

RED

YELLOW

0.499

0.483

0.474

RED (S)

YELLOW (R)

WHITE (C)

U-V
V-W

W-U

U-V
V-W
W-U

– 24 –

MAIN PARTS COMPONENT

FAN MOTOR

Fan Motor Specifications

CONNECTION

MODEL

POWER SOURCE

OUTPUT

BLU : BLUE YEL : YELLOW BRN : BROWN WHT : WHITE

GRY : GRAY ORN : ORANGE GRN : GREEN RED : RED

BLK : BLACK PNK : PINK VIO : VIOLET

RAM-90QH5

DC : 280V

138W

RESISTANCE VALUE

( )

20˚C

(68˚F)

75˚C

(167˚F)

—

—

M

RED

BLK

WHT

YEL

BLU

(Control circuit built in)

280V

15V

0V

0-6V

0-15V

Remote Control

CIRCUIT DIAGRAM

– 25 –

1
2
3
4
5
6
7
8

10
11

13
14
15
16
17

19
20

9

12

18

SEG19
SEG18
SEG17
SEG16
SEG21
SEG24
SEG25
SEG26
SEG27
SEG28

NC
NC
NC
NC
NC
NC
NC
NC
NC

SEG20

SEG5
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6

SEG7
COM3
COM2
COM1
COM0

SEG14

SEG13

SEG12

SEG11

SEG13

SEG9

SEG8

40
39
38
37
36
35
34
33

31
30

28
27
26
25
24

22
21

32

29

23

40
39
38
37
36
35
34
33

31
30

28
27
26
25

32

29

64

63

62

61

60

59

58

57

56

55

54

53

52

51

50

49

48 47

46

45

44

43

41

42

65
66
67
68
69
70
71
72

74
75

77
78
79
80

73

76

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 18

19

20

21

22

24

23

SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
SEG34
SEG35

SEG19

SEG18

SEG17

SEG16

SEG15

SEG14

SEG13

SEG12

SEG11

SEG10

SEG9

SEG8

SEG7

SEG6

SEG5

SEG4

SEG3

SEG2

SEG1

SEG0

SEG43

SEG42

SEG41

SEG40

P40

P41

P42

P43

P00

P01

P02

P03

P10

P11

P12

P13

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

BEEP

P20

P30

P31

NCVL C1

VL C2
VL C3
XC IN

XC OUT

VDD

X OUT

X IN

RESET

CARR

P23
P22
P21

VSS

IC 1
M3455OM6A-504FP

LCD 1

C8

50v/1u

K 1
D3
RB425D(1/2)

K2K3

K4

K5

P10

P11

P12

K6

K7 K8

K9 K10

K11K12

K18

K17

K15 K16

K13 K14

D0

D1

D2

D3

R1

100k

SW1

R2

P

100k

R3

100k

R4

100k

R5

Q1

2SC3443

or 2SC2982

R6

R7

R9

D2D1

D1 D2

EL-1L7

D3

(1/2)

RB425D

R10
12M

K19

X1

C9

R11

R15

R16

R13

R14

910kHz

105

104

104

150k

X2

kHz

C4

C5

C6

C7

18p

22p

R12
220k

220K

220k

100k

100k

32.768

C1

C2

C3

220p

220p

334

R6 R9

24(1/8W)

R8

330

SW-187-2P

Key matrix table

Input

D3D2D1

D0

Output

Door open Automatic swingFan speed selectionOperation selectionStart/Stop

Door shut ––Automatic swingStart/Stop

Door open Day

• present timeHour downHour upOn timer

Door shut Fan speedRoom temperature downRoom temperature up–

Door open CancelReservation–Off timer

Door shut –––Sleep

P10

P11

P12