DETACHMENTS. Toshiba RAV-SM560 BT-E, RAV-SM560 XT-E, RAV-SM560 KRT-E, RAV-SM800 AT-E, RAV-SM800 KRT-E, RAV-SM800 BT-E, RAV-SM800 XT-E, RAV-SM560 UT-E, RAV-SM560 AT-E, RAV-SM800 UT-E

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15. DETACHMENTS

15-1. Indoor Unit

RAV-SM560UT-E, SM800UT-E

No.

Q

Part name

Suction grille

Procedure

REQUIREMENT

Never forget to put on the gloves at disassembling work, otherwise an injury will be caused.

1. Detachment

1) Stop operation of the air conditioner, and then turn off switch of the breaker.

2) Hang down the suction grille while sliding two knobs of the suction grille inward.

3) Remove a strap connecting the panel and the suction grille to remove the suction grille.

2. Attachment

1) Hang the suction grille to the panel.

2) Attach the strap of the suction grille to the panel as before.

3) Close the suction grille, slide the knobs outward, and then fix it.

Remarks

Knob of suction grille

Remove the strap.

R

Electric parts cover

1. Detachment

1) Perform work of item 1. of

Q

.

2) Remove screws fixing the electric parts cover. (Ø4 x 10, 3 pcs.)

3) Remove the electric parts cover from the tentative hook, and then open the cover.

2. Attachment

1) Close the electric parts cover and hang the cover hole to the tentative hook.

2) Tighten the fixing screws.

(Ø4 x 10, 3 pcs.)

3 screws

Tentative hook

– 135 – www.ilmalämpöpumput.com


Remarks No.

S

Part name

Adjust corner cap

Procedure

1. Detachment

1) Perform work of item 1. of

Q

.

2) Remove screws at 4 corners of the suction port. (Ø4 x 10, 4 pcs.)

3) Push the knob outward and remove the adjust corner cap by sliding it.

2. Attachment

1) Mount the adjust corner cap by sliding it inward.

2) Tighten screws at 4 corners of the suction port. (Ø4 x 10, 4 pcs.)

Screw

Push outward

T

Ceiling panel

1. Detachment

1) Perform works of items 1 of and 1 of

S

.

Q

, 1 of

R

2) Remove the flap connector (CN33,

White, 5P) connected to the control P.C.

board, and then remove the lead wire from the clamp.

NOTE :

Remove the connector by releasing locking of the housing.

3) Remove screws fixing the ceiling panel.

(M5, 4 pcs.)

4) Push the tentative hook outward to remove the ceiling panel.

2. Attachment

1) Hang the tentative hook of the main body drain pan to the tentative hook of the ceiling panel.

NOTE :

A panel has directional property, so mount a panel with attention to the marks.

2) Tighten fixing screws. (M5, 4 pcs.)

3) Connect flap connector of the ceiling panel to connector (CN33, White, 5P) on the control P.C. board.

Remove the flap connector

Fixing screw

Push the tentative hook outward



Remarks No.

U

Part name

Control P.C.

board

Procedure

1. Detachment

1) Perform works of items 1 of

Q

and 1 of

R

.

2) Remove connectors which are connected from the control P.C. board to other parts.

CN33 : Flap motor (5P: White)

CN34 : Float switch (3P: Red)

CN41 : Terminal block of remote controller (3P: Blue)

CN68 : Drain pump (3P: Blue)

CN67 : Terminal block of power supply

(5P: Black)

CN101 : TC sensor (2P: Black)

CN102 : TCJ sensor (2P: Red)

CN104 : Room temperature sensor

(2P: Yellow)

CN333 : Power supply of fan motor

(5P: White)

CN334 : Position detection of fan motor

(5P: White)

NOTE :


3) Unlock locking of the card-edge spacer at 6 positions to remove the control P.C.

board.

2. Attachment

1) Fix the control P.C. board to the cardedge spacer at 6 positions.

2) Connect the connectors removed in item 1 to the original positions.

Card-edge spacer


No.

V


Part name

Fan motor

Procedure

1. Detachment


Q

and 1 of

R

.

2) Remove clamps of the lead wires connected to the following connectors of the control P.C. board.

CN33 : Flap motor (5P: White)






(5P: White)


(5P: White)

NOTE :


3) Remove screws fixing earth lead wire in the electric parts box. (Ø4 x 6, 2 pcs.)

4) Remove indoor/outdoor inter-unit cable and remote controller cable of the terminal block.

5) Remove screws fixing the electric parts box. (Ø4 x 10, 5 pcs.)

6) Remove screws fixing the bell mouth.

(Ø4 x 10, 6 pcs.)

7) Remove nuts fixing the turbo fan.

(M6, 1 pc.)

8) Remove screws fixing holder of the motor lead wires to remove the motor lead wires from the clamp. (Ø4 x 8, 3 pcs.)

9) Remove nuts fixing the fan motor to remove it.

2. Attachment

1) Fix the parts, fan motor, holder of the motor lead, turbo fan, bell mouth, and electric parts box successively to their original positions.

NOTE 1 :

When fixing the turbo fan, be sure to match the fan boss with D-cut of the motor shaft.

NOTE 2 :

Fix the turbo fan with torque wrench

5.9 ± 0.6Nm.

2) Connect connectors, earth lead wire, indoor/outdoor inter-unit cable, and remote controller cable which have been disconnected in the above item 1 as before.

Remarks

Screws fixing electric parts box

Screws fixing earth lead wires

Bell mouth

Fan motor

Turbo fan

Motor lead holder



Remarks No.

W

Part name

Drain pan

Procedure

1. Detachment


Q

, 1 of

R

, 1 of

S

and 1 of

T

.

2) Remove clamps of the lead wires connected to the following connectors of the control P.C. board.






(5P: White)


(5P: White)

NOTE :


3) Remove screws fixing earth lead wire in the electric parts box. (Ø4 x 6, 2 pcs.)

4) Remove indoor/outdoor inter-unit cable and remote controller cable of the terminal block.

5) Remove screws fixing the electric parts box. (Ø4 x 10, 5 pcs.)

6) Remove screws fixing the bell mouth.

(Ø4 x 10, 6 pcs.)

7) Remove the drain cap, and drain water accumulated in the drain pan.

NOTE 1 :

When removing the drain cap, be sure to prepare a bucket to catch the drained water.

NOTE 2 :

Thermal insulator is adhered to the drain cap. Be careful not to peel off the insulator.

If the insulator has been peeled, adhere it with double-face tape, etc. as before.

8) Remove screws fixing the drain pan.

(Ø4 x 8, 4 pcs.)

2. Attachment

1) Fix the parts, drain cap, drain pan, bell mouth, and electric parts box successively to their original positions.


Screws fixing earth lead wires

Drain cap

Screws fixing drain pan


No.

X


Part name

Drain pump assembly

Procedure

1. Detachment


Q

, 1 of

R

,

1 of

S

, 1 of

T

and 1 of

W

.

2) Picking the hose band, slide it from pump connecting part to remove the drain hose.

3) Remove screw fixing the drain pump assembly, slide hooking claws of the drain pump assembly and the main body (1 position), and then remove the assembly. (Ø4 x 8, 3 pcs.)

3. Attachment

1) Fix the drain pump assembly as before.

NOTE :

The drain pump is fixed with a hook and 3 screws. In screwing, be sure that screws do not to run on hooking claw at the main body side.

2) Attach the drain hose and hose band as before.

NOTE :

Insert the drain hose up to the end of pump connecting part, and bind the white mark position of the hose with band.

Remarks

Slide to hose side.

Hose band

Pump connecting part

Hooking claw

Fixing screw



Remarks No.

Y

Part name

Heat exchanger

Procedure

1. Detachment

1) Recover refrigerant gas.

2) Remove refrigerant pipe at the indoor unit side.


Q

, 1 of

R

,

1 of

S

, 1 of

T

and 1 of

W

.

4) Remove screws fixing the pipe cover.

(Ø4 x 8, 2 pcs.)

5) Remove the heat exchanger by removing fixing band and fixing screws while holding the heat exchanger.

(Ø4 x 8, 3 pcs.)

2. Attachment

1) Fix the parts, heat exchanger, fixing band, pipe cover, drain cap, drain pan, bell mouth, and electric parts box successively to their original positions.


3) Connect the refrigerant pipe as before, and then perform vacuuming.

Fixing screws

Fixing band

Fixing screws



15-2. Replacement of Distributor Assembly

RAV-SM560UT-E

1. Cutting of Capillary Tube

A capillary tube ( 023 : Inner diameter 2mm, Length 1000mm) is brazed to a distributor assembly. Cut and divide the tube to each length as shown below.

Ref No.

023

No. of capillary tubes

4

Cutting

200 mm : 2 pcs.

400 mm : 2 pcs.

[Cutting]

Plane circumference of the capillary tube with triangle file, etc., and then break off it.

2. Attachment of joint pipe

Insert the attached joint pipe into the end of the capillary tube up to 15mm, and braze it.

Form the capillary tube as same as that in the distributor assembly before replacement.

NOTE) Break off the capillary tube so

that inner diameter is not deformed

3. Brazing to indoor heat exchanger

Attach the capillary tube processed in items 1 and 2 to the end of the pipe with brazing as shown below.

023

–

142

– www.ilmalämpöpumput.com


RAV-SM800UT-E

1. Cutting of Capillary Tube

A capillary tube ( 025 026 : Inner diameter 2mm, Length 1000mm) is brazed to a distributor assembly.

Cut and divide the tube to each length as shown below.

Ref No.

025

026

No. of capillary tubes

7

10

100 mm : 1 pc.

300 mm : 1 pc.

400 mm : 1 pc.

100 mm : 2 pcs.

150 mm : 1 pc.

500 mm : 4 pcs.

Cutting

600 mm : 2 pcs.

700 mm : 1 pc.

800 mm : 1 pc.

600 mm : 2 pcs.

900 mm : 1 pc.

[Cutting]

Plane circumference of the capillary tube with triangle file, etc., and then break off it.

2. Attachment of joint pipe

Insert the attached joint pipe into the end of the capillary tube up to 15mm, and braze it.

Form the capillary tube as same as that in the distributor assembly before replacement.

NOTE) Break off the capillary tube so

that inner diameter is not deformed

3. Brazing to indoor heat exchanger

Attach the capillary tube processed in items 1 and 2 to the end of the pipe with brazing as shown below.

025 026

–

143



15-3. Replacement of Main Parts <Built-in type>

RAV-SM560BT-E, SM800BT-E

Be sure to turn off the power supply before disassembling work.

No.

1

Item Procedure

Electric parts box 1) Remove the electric parts box.

(Supplement: Refer to How to remove the electric parts box.)

In this time, remove connectors of TA sensor, TC sensor, and TCJ sensor, if necessary.)

2 Fan 1) Remove connector of the fan motor.

2) Remove screws fixing the fan. (Screws at 4 positions)

3) Take off jointed portion of fan and cabinet, and then put down the fan.

4) Loosen set screw of the Silocco fan.

5) Remove set screw of the fan case.

6) Remove the fan motor mounting metal, and then replace the fan motor.

3 Drain pan 1) Take down the indoor unit and then treat the drain pan on the floor.

2) Remove screws fixing the drain pan (12 positions) and then replace the drain pan.

Electric parts fixing screw

Fan fixing screw

Fan

Electric parts box

Drain pan

4 Heat exchanger 1) Take down the indoor unit and then treat the heat exchanger on the floor.

2) Remove screws fixing the drain pan (12 positions) and then remove the drain pan.

3) Remove the shielding plate. (Screws at

4 positions)

4) Remove screws (at 4 positions) fixing the heat exchanger, and then replace the heat exchanger.

5 TC sensor

(Sensor side)

1) Remove the check port cover.

2) Remove the shielding plate.

(At 4 positions)

3) Pull out the sensors inserted into pipe of the heat exchanger.

Shielding plate

Heat exchanger

Shielding plate

Check port cover

–

144



AID-P710BH, P800BH, P1120BH

Be sure to turn off the power supply before disassembling work.

No.

1

Item

Electric parts box

Procedure

1) Remove the electric parts box.

(Supplement: Refer to How to remove the electric parts box.)

In this time, remove connectors of TA sensor, TC sensor, and TCJ sensor, if necessary.)

2

3

Fan

Drain pan

Electric parts fixing screw

Electric parts box

1) Remove connector of the fan motor.

2) Using a hexagonal wrench, loosen coupling fixing screws at 2 positions, and then slide the fan motor to reverse side.

3) Remove set screws (6 positions) of the fan case (left).

4) Remove fan motor mounting metal

(screws at 2 positions) while holding the fan motor with hands.

5) Remove capacitor fixing screw

(1 position).

6) Take down the fan motor and the fan case (left).

7) Loosen set screw of the Silocco fan.

8) Replace the fan motor.

1) Take down the indoor unit and then treat the drain pan on the floor.

2) Remove screws fixing the drain pan and then replace the drain pan.

Fan case (left)

Capacitor

Drain pan

Fan motor

Silocco fan (right)

4 Heat exchanger

5 TC sensor

(Sensor side)

1) Take down the indoor unit and then treat the heat exchanger on the floor.

2) Remove screws fixing the drain pan and then remove the drain pan.

3) Remove the shielding plate. (Screws at

4 positions)

4) Remove screws (at 5 positions) fixing the heat exchanger, and then replace the heat exchanger.

1) Remove the check port cover.

2) Remove the shielding plate.

(At 4 positions)

3) Pull out the sensors inserted into pipe of the heat exchanger.

Shielding plate

Heat exchanger

Shielding plate

Check port cover



[SUPPLEMENT] How to remove the electric parts box

Electric parts box

The electric parts box is fixed to the indoor unit with claws at the rear side.

Lift up it once and pull toward you. Then claws come off.

Hook

F7-43-4

Procedure 2

Remove these two screws to remove the electric parts box.

Electric cable

Remote controller cable

Electric parts box cover

A hole at the ceiling surface side is fixed to upper part of the electric parts box with claws.

Lift up it once and pull toward you.

Then claws come off.

Procedure 1

Remove these two screws to remove the electric parts box cover.

–

146



15-4. Replacements of Main Parts <Hi-Wall type>

15-4-1. Indoor Unit

No.

Part name

Front panel

Procedure

1) Stop operation of the air conditioner, and turn off the power supply.

2) Push

“

PUSH

”

part at the lower side of the front panel, and then take off claws of the front panel from the installation board.

3) Open the suction grille and take off the front panel fixing screws (4 pcs.).

4) After turning the side grille as shown in the right figure, perform the following works.

5) Push the electric parts box with right thumb while pulling both sides of the front panel toward you.

<Attachment of front panel>

1) Turn the side grille as shown in the right figure.

2) Push 3 positions at center of the discharge port and 2 positions at lower center of the discharge port, and then hook the hooking claws (3 positions) at upper surface of the front panel to the rear board.

3) Tighten 4 screws.

•

Insufficient hooking or pushing may cause falling of dewdrop or discomforting noise.

When removing the front panel without turning the side grille, the front panel may be broken.

Remarks

Installation board

Front panel

Side grille

Upper hooking claws

(3 positions)

Fixing screws

Electric parts box assembly

1) Perform work of item 1 of

.

2) Remove the drain guide.

3) Take off screws for earth lead wire attached to the end plate of the heat exchanger.

4) Disconnect connectors for fan motor and louver motor from the microcomputer assembly.

5) Remove the display unit at the center of the set from the main body.

Screw

Drain guide

Fixing screws

–

147



No.

Part name

Electric parts box assembly

Side grille

Procedure

6) Take off fixing screw (1 position) of the electric parts base, and then pull out the electric parts base toward you.

7) Pull out Tc sensor and Tcj sensor from sensor holder of the heat exchanger. After replacement of the parts, incorporate two sensors without mistake as shown in the right figure.

(Tube is attached to Tcj sensor.)

8) After replacement of the parts, set a trap so that water does not enter in the electric parts assembly. (Incomplete process for lead wires may cause water leak.)

1) Remove shaft of the side grille from the air conditioner body. (First remove the left shaft and then other shafts while sliding the side grille left and right.)

Remarks

Tjc sensor position

(Tube is attached to Tcj sensor.)

TC sensor position

Heat exchanger 1) Perform work of item

.

2) Remove pipe holder at rear side of the main body.

3) Take off fixing screws (2 pcs.) at the left side of the end plate of the heat exchanger.

Pipe holder

Fixing screw

4) Take off two fixing screws of the heat exchanger holder (right), and then remove the heat exchanger holder (right).

5) Take off fixing screw at lower right side of the heat exchanger.

6) Remove the heat exchanger from the rear main body by lifting it upward.

Fixing screw

–

148



Remarks No.

Part name

Fan motor

Procedure

1) Perform work of item

.

2) Perform work of item

.

3) Loosen set screw of the cross flow fan from the discharge port.

4) Remove the bushing (right).

Bushing (right)

Set screw

Push this part upward

Cross fan

Cross flow fan

Fixing screws

5) Take off two fixing screws of the motor band (right).

6) Pull out the motor band (right) and the fan motor outward.

* Caution at reassembly

•

Determine position of the fan motor so that connector of the fan motor enters in the positioning rib of the motor band (right).

1) Perform works of items

and

.

2) Loosen set screw of the cross flow fan from the discharge port.

3) Take off two fixing screws at the left side of the end plate of the heat exchanger, and then take off two fixing screws of the bearing base.

Fixing screw

4) Lift up slightly the left side of the heat exchanger to remove the bearing base.

5) Lift up the left side of the heat exchanger toward you to remove the cross flow fan.

* Caution at reassembly

•

Mount the cross flow fan so that the left end of the first joint from right of the drift fan matches with the left end of the positioning rib of the rear main body.

Positioning rib

–

149



15-4.2. Replacement Procedure of Service Main P.C. Board

Replacement Procedure of Indoor Control P.C. Board

(AIK-PXXXH series, SIK-PXXXH series)

For this indoor control P.C. board [AIK/SIK-P SERVICE] corresponding to the common P.C. boards, follow to this replacement procedure when replacing P.C. board.

(When using SIK-PXXXH series, P.C. board name, parts layout, etc. of the presently mounted P.C. board differ from those of this service P.C. board. However there is no problem in the functions.)

Components

•

Service P.C. board (MCC-1370A [AIK/SIK-P SERVICE] : 1 unit

•

Replacement Procedure of Indoor Control P.C. Board : These sheets

•

Replacement Record of remote controller/indoor control P.C. board/outdoor control P.C. board : 1 sheet

Replacement Procedure

1

Remove the presently mounted P.C. board from the electric parts box.

(Be sure to send back the replaced P.C. board with Replacement Record attached separately.)

2

Set Dip SW and jumpers of the service P.C. board according to the following exchange correspondence table.

Part

Model <Reference>

Service P.C. board

Initial setup at shipment

AIK-P400H

AIK-P450H

AIK-P500H

AIK-P560H

AIK-PXXXH series

AIK-P630H

J15

J16

J17

J19

J22

J24

J01

J07

J09

J11

J12

J14

J25

J36

J50

J53

J54

J55

SW03

1

2

ON

OFF

〇

〇

×

〇

〇

〇

〇

〇

〇

〇

〇

〇

〇

〇

〇

〇

×

〇

Match setup with one of former P.C. board.

As it is : 〇

Match setup with one of former P.C. board.

As it is : 〇

As it is :

〇

As it is : 〇

As it is : 〇

As it is :

×

As it is :

〇

Cut : ×

As it is :

〇

As it is :

×

As it is : 〇

As it is : Setup of jumper of the service P.C. board is not changed.

As it is :

〇

Cut : ×

As it is : 〇

3

Mount P.C. board according to [Mounting].

–

150


AIK-P710H

AIK-P800H

Cut :

×

As it is : 〇

As it is : 〇


[Mounting]

In case of AIK-PXXXH series

1. As same as P.C. board before replacement, attach a cable (Black) which is screwed to the electric parts box to CN240 without using a cable (Black) attached previously to CN240 of the service P.C. board.

Service P.C. board

CN204

Cable

(Remove a cable attached previously to CN240 of the service P.C. board.)

2. Attach other cables as same as P.C. board before replacement.

<(Reference) Explanation about functions of switches/jumpers>

•

The following table shows the functions of the main switches and jumpers. Use as reference in miss-setup.

Part name

SW03

1

2

Function

TA shift: Thermo-OFF point can be shifted in heating operation.

Bit 1

OFF

OFF

ON

ON

Bit 2

OFF

ON

OFF

ON

+ 6K

+ 4K

Shift Q’ty

+ 2K (Setup at shipment)

± 0K

J09

J11

J12

Selection of hot start control temperature :

The starting temperature of the fan can be raised in heating operation.

J09

Provided

None

Normal (Setup at shipment)

Setup

Fan starting temp up (Approx. +4K)

Setup of filter timer

J11

Provided

None

Provided

None

J12

Provided

Provided

None

None

Setup

240 hours (Setup at shipment)

2500 hours

5000 hours

Without filter timer

–

151



<Parts layout of service P.C. board>

CN213 display part

CN04 temp. sensor

CN05 heat exchanger

CN240

Label

CN231

CN230

CN223

Jumper

P.C. board (MCC-1370A)

SW03: TA shift

Jumper

–

152



15-5. Outdoor Unit

RAV-SM560AT-E

No.

Part name

Common procedure

Procedure

CAUTION

Never forget to put on the gloves at working time, otherwise an injury will be caused by the parts, etc.

1. Detachment

1) Stop operation of the air conditioner, and turn off the main switch of the breaker for air conditioner.

2) Remove the valve cover.

(ST1T

Ø

4 x 10L, 1 pc.)

•

After removing screw, remove the valve cover pulling it downward.

3) Remove wiring cover (ST1T

Ø

4 x 10L, 2 pcs.), and then remove connecting cable.

4) Remove the upper cabinet.

(ST1T

Ø

4 x 10L, 2 pcs.)

•

After taking off screws, remove the upper cabinet pulling it upward.

2. Attachment

1) Attach the waterproof cover.

CAUTION

Be sure to attach a waterproof cover.

If it is not attached, there is a possibility that water enters inside of the outdoor unit.

2) Attach the upper cabinet.

(ST1T

Ø

4 x 10L, 2 pcs.)

•

Hook the rear side of the upper cabinet to claw of the rear cabinet, and then put it on the front cabinet.

3) Perform cabling of connecting cables, and fix with cord clamp.

(ST1T

Ø

4 x 10L 3 pcs.)

4) Attach the wiring cover.

(ST1T

Ø

4 x 10L, 2 pcs.)

5) Attach the valve cover.

(ST1T

Ø

4 x 10L, 1 pc.)

•

Insert the upper part of the upper cabinet, set hooking claw of the valve cover to the slit (at three positions) of the main body, and then attach it pushing upward.

Remarks

Valve cover

Upper cabinet

Wiring cover

Water-proof cover

Cord clamp

Rear cabinet

Claw

–

153



No.

Part name

Front cabinet

Procedure

1. Detachment


.

2) Remove screws (ST1T

Ø

4 x 10L, 2 pcs.) of the front cabinet and the inverter cover.

3) Take off screws of the front cabinet and the bottom plate. (ST1T

Ø

4 x 10L 3 pcs.)

4) Take off screws of the front cabinet and the motor support.

(ST1T

Ø

4 x 10L, 2 pcs.)

•

The left side of the front side if made to insert to the rear cabinet, so remove it pulling upward.

Remarks

Motor support

Front cabinet

For single-phase type models, also take off this screw

Front cabinet (Left side)

3. Attachment

1) Insert hook at the left side of the front side into the rear cabinet.

2) Hook the lower part at the right side of the front to concavity of the bottom plate.

Insert the hook of the rear cabinet into the slit of the front cabinet.

3) Attach the removed screws to the original positions.

Slit Claw

Slit

Hook

Front cabinet

Cord clamp

Concavity at bottom plate

Lower slit

–

154


No.


Part name

Inverter assembly

Procedure

1. Detachment


.

2) Take off screws of the upper part of the front cabinet.

•

If removing the inverter cover under this condition, P.C. board can be checked.

•

If there is no space in the upper part of the upper cabinet, perform work of

.

CAUTION

Be careful to check the inverter because high-voltage circuit is incorporated in it.

3) Perform discharging by connecting + ,

– polarities by discharging resistance

(approx. 100

Ω

, 40W) or plug of soldering iron to + ,

–

terminals of the C14

(printed as

“

CAUTION HIGH VOLTAGE

”

) electrolytic capacitor (500µF) of P.C.

board.

WARNING

The electrolytic capacitor may not normally discharge according to error contents and the voltage may remain. Therefore, be sure to discharge the capacitor.

WARNING

For discharging, never use a screwdriver and others for short-circuiting between + and

–

electrodes. As the electrolytic capacitor is one with a large capacity, it is very dangerous because a large electric spark will occur.

4) Take off screws (ST1T

Ø

4 x 10L, 2 pcs.) fixing the main body and the inverter box.

5) Remove various lead wires from the holder at upper part of the inverter box and wiring holder at right side of the terminal block.

6) Remove the lead wire from the bundled part at left side of the terminal block.

7) Pull the inverter box upward.

8) Disconnect connectors of various lead wires.

REQUIREMENT

As each connector has a lock mechanism, avoid to remove the connector by holding the lead wire, but by holding the connector.

Remarks

Screws

Front cabinet

Inverter cover

Cord clamp

Screws

Plug of soldering iron

Discharging position

(Discharging period

10 seconds or more)

Inverter assembly

Remove the connectors with locking function by pushing the part indicated by the arrow mark.

–

155



No.

Part name

Control P.C.

board assembly

Procedure

1) Disconnect lead wires and connectors connected from the control P.C. board assembly to other parts.

1. Lead wires

•

Connection with the power terminal block: 3 wires (Black, White, Orange)

•

Earth wire: 1 wire (Black)

2. Connectors

•

Connection with compressor:

Remove 3P connector.

•

Connection with reactor:

Remove the relay connectors from

P07, 08 (2P, White) and P12, 13 (2P,

Yellow)

CN300 : Outdoor fan (3P, White)

CN301 : Position detection (5P, White)

CN701 : 4-way valve (3P, Yellow)

CN600 : TE sensor (2P, White)

CN601 : TD sensor (3P, White)

CN603 : TS sensor (3P, White)

CN602 : TO sensor (3P, White)

CN500 : Case thermo. (2P, White)

CN703 : PMV (6P, White)

2) Remove the inverter box (Metal plate).

3) Remove the control board assembly from

P.C. board base. (Remove the heat sink and the control board assembly as they are screwed.)

NOTES:

1. CN300, CN301 and CN701, etc. at the control board assembly side are connectors with locking function. Therefore, remove the connector while pushing the part indicated by an arrow mark.

2. Remove 4 hooking claws of P.C. board base, and remove upward the heat sink with hands.

4) Take off 3 screws fixing the heat sink and main control board assembly side, and replace the board with a new one.

NOTE:

When mounting a new board, check that the board is correctly set in the groove of the base holder of P.C. board base. Attach the

P.C. board so that the heat sink comes securely contact with the metal sheet.

Heat sink

Remarks

Take off earth screws.

Power line

Inverter box

(Metal sheet)

Control P.C. board assembly

P.C. board base

Hooking claws

(4 positions)

Control P.C. board assembly

P.C. board base

Inverter box

(Metal sheet)

–

156



Remarks No.

Part name

Rear cabinet

Procedure


and

,

.

2) Take off fixed screws for the bottom plate.

(ST1T

Ø

4 x 10L, 3 pcs.)

3) Take off fixed screws for the heat exchanger. (ST1T

Ø

4 x 10L, 2 pcs.)

4) Take off fixed screw for the valve mounting plate. (ST1T

Ø

4 x 10L, 1 pc.)

Rear cabinet

Fan motor 1) Perform works of items 1 of

and

.

2) Take off the flange nut fixing the fan motor and the propeller.

•

Turning it clockwise, the flange nut can be loosened. (To tighten the flange nut, turn counterclockwise.)

3) Remove the propeller fan.

4) Disconnect the connector for fan motor from the inverter.

5) Take off the fixing screws (3 pcs.) holding by hands so that the fan motor does not fall.

NOTE:

Tighten the flange nut with torque 4.9Nm

(50kgf/cm).

Flange nut

Loosen the nut by turning clockwise

Propeller fan

Fan motor

–

157



No.

Part name

Compressor

Procedure


,

,

,

.

and

2) Discharge refrigerant gas.

3) Remove the partition plate.

(ST1T

Ø

4 x 10L, 2 pcs.)

4) Remove the noise-insulator.

5) Remove the terminal covers of the compressor, and disconnect lead wires of the compressor and the compressor thermo assembly from the terminal.

6) Remove pipes connected to the compressor with a burner.

CAUTION

Pay attention to that flame does not involve 4-way valve or PMV. (If doing so, a malfunction may be caused.)

Remarks

Partition plate

Compressor lead

Case thermo

7) Take off the fixing screws of the bottom plate and heat exchanger.

(ST1T

Ø

4 x 10L, 2 pcs.)

8) Take off the fixing screws of the valve clamping plate to the bottom plate.

9) Pull upward he refrigerating cycle.

10) Take off nut fixing the compressor to the bottom place.

CAUTION

When reconnecting the lead wires to the compressor terminals after replacement of the compressor, be sure to caulk the Faston terminal without loosening.

Remove

(Discharge pipe)

Heat exchanger

Remove

(Suction pipe)

Screw

Valve support board

Screws (2 pcs.)

Compressor bolt (3 pcs.)

Reactor 1) Perform works of item 1 of

and

.

2) First take off two screws (ST1T

Ø

4 x

10L) of the reactor fixed to the reactor support.

3) Remove the reactor support from the partition plate.

(ST1T

Ø

4 x 10L, 4 pcs.)

4) Take off two screws (ST1T

Ø

4 x 10L) directly attached to the partition plate.

Reactor

Partition plate

Reactor support board

–

158


No.


Part name

Pulse Modulating

Valve (PMV) coil

Procedure

1. Detachment


and

.

2) Release the coil from the concavity by turning it, and remove coil from the

PMV.

2. Attachment

1) Put the coil deep into the bottom position.

2) Fix the coil firmly by turning it to the concavity.

Remarks

PMV body

Positioning extrusion

Concavity

PMV coil

Fan guard

1. Detachment


, and

.

2) Remove the front cabinet, and put it down so that fan guard side directs downward.

CAUTION

Perform works on a corrugated cardboard, cloth, etc. to prevent flaw on the product.

3) Remove the hooking claws by pushing with minus screwdriver along with the arrow mark in the right figure, and remove the fan guard.

2. Attachment

1) Insert claws of the fan guard in the hole of the front cabinet. Push the hooking claws (10 positions) with hands and then fix the claws.

CAUTION

All the attaching works have completed.

Check that all the hooking claws are fixed to the specified positions.

Minus screwdriver

Hooking claw

Front cabinet

Front cabinet

Fan guard

–

159



RAV-SM800AT-E

No.

Part name

Common procedure

Procedure

CAUTION

Never forget to put on the gloves at working time, otherwise an injury will be caused by the parts, etc.

1. Detachment

1) Stop operation of the air conditioner, and also turn off switch of the breaker.

2) Remove the front panel.

(ST1T

Ø

4 x 10L, 3 pcs.)

•

After taking off screws, remove the front panel by pulling it downward.

3) Disconnect the connecting cables and power cord from the terminals and cord clamp.

4) Remove the upper cabinet.

(ST1T

Ø

4 x 10L, 6 pcs.)

2. Attachment

1) Attach the waterproof cover.

CAUTION

Be sure to attach a waterproof cover.

If it is not attached, there is a possibility that water enters inside of the outdoor unit.

2) Attach the upper cabinet.

(ST1T

Ø

4 x 10L, 6 pcs.)

3) Connect the connecting cable and power cord at the terminal and fix them with cord clamp.

CAUTION

Using bundling band sold at a market, be sure to fix the power cables and indoor/ outdoor connecting cables along the interunit cable so that they do not come to contact with the compressor, valves and cables at gas side, and the discharge pipe.

4) Attach the front cabinet.

(ST1T

Ø

4 x 10L, 3 pcs.)

Front cabinet

Remarks

Upper plate of cabinet

Water-proof cove

–

160



Remarks No.

Part name

Discharge port cabinet

Procedure

1. Detachment


.


Ø

4 x 10L, 3 pcs.) of discharge port cabinet for the partition plate.


Ø

4 x 10L, 2 pcs.) of discharge port cabinet for the bottom plate.

4) Take off screw (ST1T

Ø

4 x 10L, 1 pc.) of discharge port cabinet for the heat exchanger.


Ø

4 x 10L, 2 pcs.) of discharge port cabinet for the fin guard.

2. Attachment

1) Put the upper left side of the discharge port cabinet on the end plate of the heat exchanger, and then fix it with screw.

(ST1T

Ø

4 x 10L, 1 pc.)

2) Attach the removed screws to the original positions.

Side cabinet

Inverter

Fin guard

End plate of the heat exchanger

Discharge port

Side cabinet 1) Perform work of item 1 of

.

2) Remove screw fixing the inverter and the side cabinet. (ST1T

Ø

4 x 10, 1 pc.)

3) Remove screws of the side cabinet and the valve support plate.

(ST1T

Ø

4 x 10, 2 pcs.)

4) Remove screw of the side cabinet and the cabling panel (Rear).

(ST1T

Ø

4 x 10, 1 pc.)

5) Remove screw of the side cabinet and the bottom plate. (ST1T

Ø

4 x 10, 1 pc.)

6) Remove screw of the side cabinet and the fin guard (Heat exchanger).

(ST1T

Ø

4 x 10, 2 pcs.)

Valve support plate

Side cabinet

Inverter

Side cabinet

Valve support plate

Cabling panel

(Rear)

–

161



No.

Part name

Inverter assembly

Procedure

1) Perform works of items of 1) to 5) of

.

2) Take off screw (ST1T

Ø

4 x 10L, 1 pc.) of the upper left part of the inverter cover.

•

If removing the inverter cover under this condition, P.C. board can be checked.

•

If there is no space in the upper part of the upper cabinet, perform works of items 6) to 7) of (1) and remove the partition fixing plate.

(ST1T

Ø

4 x 10L, 1 pc.)

CAUTION

Be careful to check the inverter because high-voltage circuit is incorporated in it.

Screw

Inverter assembly

Holder

3) Perform discharging by connecting the discharging resistance (approx. 100

Ω

,

40W) or plug of soldering iron to + ,

– terminals of the C10 too 13 (printed as

“

CAUTION HIGH VOLTAGE

”

) electrolytic capacitor (760µF) of P.C. board.

WARNING

The electrolytic capacitor may not normally discharge according to error contents and the voltage may remain. Therefore, be sure to discharge the capacitor.

WARNING

For discharging, never use a screwdriver and others for short-circuiting between + and

–

electrodes. As the electrolytic capacitor is one with a large capacity, it is very dangerous because a large electric spark will occur.

4) Remove various lead wires from the holder at upper part of the inverter box.

5) Remove the hook for the partition plate

(lower left side).

6) Remove the hook for the side cabinet

(lower left side) and the screw, and lift up the inverter assembly upward. (ST1T

Ø

4 x

10L, 1 pc.) In this time, cut off the band bundling each lead wire.

7) Disconnect connectors of various lead wires.

REQUIREMENT

As each connector has a lock mechanism, avoid to remove the connector by holding the lead wire, but by holding the connector.

Remarks

Inverter assembly

Hook for the side cabinet (lower left side)

Inverter cover

Inverter assembly

Plug of soldering iron

Left time:

10 sec. or more

Screw

Remove the connectors with locking function by pushing the part indicated by the arrow mark.

–

162



No.

Part name

Control P.C.

board assembly

Procedure

1) Remove the inverter box from P.C. board base.

2) Disconnect lead wires and connectors connected from the control P.C. board assembly to other parts.

1. Lead wires:

With the power terminal block: 2 pcs.

(Single phase) (Red, White)

With the compressor: 3 pcs.

(Red, White, Black)

2. Connectors

CN301 : Outdoor fan (3P, White) *Note 1)

CN300 : Position detection (5P, White)

CN700 : 4-way valve (3P, Yellow) *Note 1)

CN702 : PMV coil (6P, White)

CN600 : TD sensor (3P, White)

CN605 : TS sensor (3P, White) *Note 1)

CN604 : TE sensor (2P, White) *Note 1)

CN601 : TO sensor (2P, White)

CN02 : Indoor/Outdoor connecting

terminal block (2P, Black)

CN500 : Case thermo (2P, White) *Note 1)

CN14, CN15 : Reactor (3P, Relay

connector, Blue) *Note 1)

*Note 1)

Remove the connector while releasing locking of the housing.

3) Remove the control P.C. board assembly from

P.C. board base. (Remove the heat sink and the inverter control P.C. board assembly as they are screwed.)

Note 2)

Remove the heat sink upward by taking off two claws of P.C. base and holding the heat sink.

4) Take off three screws fixing the heat sink to the control P.C. board assembly.

5) Mount a new control P.C. board assembly.

Note 3)

When mounting a new board, check that it is correctly set in the groove of the base holder of

P.C. board base.

Remarks

Inverter box (Metal sheet)

P.C. board base

Cycle control

P.C. board assembly

Inverter control

P.C. board assembly

Cycle control

P.C. board assembly

Inverter control

P.C. board assembly

Inverter control

P.C. board assembly

Groove for

P.C. boaed

Heat sink

Inverter box

(Metal sheet)

–

163



No.

Part name

Fan motor

Procedure

1) Perform works of items 1) to 5), 7) of

2) Remove the flange nut fixing the fan motor and the propeller fan.

•

Loosen the flange nut by turning clockwise. (To tighten the flange nut, turn it counterclockwise.)

3) Remove the propeller fan.

4) Remove the lead wire from the hook fixing the fan motor lead wires on the motor base. (Three positions)


6) Take off the fixing screws (4 pcs.) while holding by hands so that the fan motor does not fall.

NOTE :

Tighten the flange nut with torque 9.8Nm

(100kgf/cm).

Flange nut

Remarks

Loosen by turning clockwise

Propeller fan

Fan motor

–

164


Motor base

Fixing claws for fan motor lead wires (3 positions)


Remarks No.

Part name

Compressor

Procedure


,

,

,

, and

.

2) Evacuate refrigerant gas.


4) Take off screws fixing the motor base to the bottom plate. (ST1T

Ø

4 x 10L, 2 pcs.)

5) Remove the motor base together with the fan motor and the propeller fan.

6) Take off screws fixing the partition plate to the valve support plate.

(ST1T

Ø

4 x 10L, 2 pcs.)

7) Remove the valve support plate.

(M6 x 4 pcs.)

8) Take off screws of the partition plate and the bottom plate. (ST1T

Ø

4 x 10L, 2 pcs.)

9) Take off screws of the partition plate and the heat exchanger. (ST1T

Ø

4 x 10L, 2 pcs.)

10) Remove the noise-insulator.

11) Remove the terminal covers of the compressor, and disconnect lead wires of the compressor and the compressor thermo assembly from the terminal.

12) Remove pipes connected to the compressor with a burner.

CAUTION

Pay attention to that flame does not involve

4-way valve or PMV. (If doing so, a malfunction may be caused.)

13) Pull the refrigerating cycle upward.

14) Take off nut fixing the compressor on the bottom plate. (3 pcs.)

15) Pull the compressor toward you.

CAUTION

When reconnecting the lead wires to the compressor terminals after replacement of the compressor, be sure to caulk the Faston terminal without loosening.

Partition plate

Motor base

Screw

Valve support

Partition plate

Valve support

Compressor lead wire

Case thermo

Remove

(Suction pipe)

Remove

(Discharge pipe)

Compressor nut (3 pcs.)

–

165


No.


Part name

Reactor

Procedure


and

.

2) Take off screws fixing the reactor.

(

Ø

4 x 10L , 2 pcs. per one reactor.

An outdoor unit has two reactors on the partition plate.)

Remarks

Screws

Partition plate

Reactor

Pulse Modulating

Valve (PMV) coil

1. Detachment


and

.

2) Remove the coil from PMV body while pulling it upward.

2. Attachment

1) Match the positioning extrusion of the coil surely to the concavity of PMV body to fix it.

PMV body

Positioning extrusion

PMV coil

Concavity

–

166



No.

Part name

Fan guard

Procedure

1. Detachment


and

.

2) Remove the air flow cabinet, and put it down so that the fan guard side directs downward.

Perform work on a corrugated cardboard, cloth, etc. to prevent flaw to the product.

3) Take off screws fixing the bell mouth.

(ST1Tf4 x 10L, 2 pcs.)

4) Remove the bell mouth.

5) Remove the hooking claws by pushing with minus screwdriver along with the arrow mark as shown in right figure.

2. Attachment

1) Insert claw of the fan guard in hole of the discharge panel. Push the hooking claws

(5 positions) with hands and fix the claws.

After all the attachment works are completed, check that all the hooking claws are fixed to the specified positions.

2) Mount the bell mouth by hooking three claws at upper side of the bell mouth in the slits on the discharge cabinet.

3) After attachment, fix the bell mouth with screws. (ST1Tf4 x 10L, 2 pcs.)

Remarks

Minus screwdriver

Hooking claw



Bell mouth

Remove two screws

Bell mouth


Fan guard

Slit (3 positions)

Bell mouth

–

167


Claw (3 positions)

DETACHMENTS. Toshiba RAV-SM560 BT-E, RAV-SM560 XT-E, RAV-SM560 KRT-E, RAV-SM800 AT-E, RAV-SM800 KRT-E, RAV-SM800 BT-E, RAV-SM800 XT-E, RAV-SM560 UT-E, RAV-SM560 AT-E, RAV-SM800 UT-E 181 Pages

DETACHMENTS. Toshiba RAV-SM560 BT-E, RAV-SM560 XT-E, RAV-SM560 KRT-E, RAV-SM800 AT-E, RAV-SM800 KRT-E, RAV-SM800 BT-E, RAV-SM800 XT-E, RAV-SM560 UT-E, RAV-SM560 AT-E, RAV-SM800 UT-E

15. DETACHMENTS

15-1. Indoor Unit

15-2. Replacement of Distributor Assembly

15-3. Replacement of Main Parts <Built-in type>

[SUPPLEMENT] How to remove the electric parts box

15-4. Replacements of Main Parts <Hi-Wall type>

15-4-1. Indoor Unit

15-4.2. Replacement Procedure of Service Main P.C. Board

Replacement Procedure of Indoor Control P.C. Board

[Mounting]

In case of AIK-PXXXH series

<(Reference) Explanation about functions of switches/jumpers>

<Parts layout of service P.C. board>

15-5. Outdoor Unit

Key Features

Frequently Answers and Questions

What are the different types of indoor units available?

What is the standard capacity of the units?

What is the sound level of the outdoor unit?

Related manuals

Table of contents

DETACHMENTS. Toshiba RAV-SM560 BT-E, RAV-SM560 XT-E, RAV-SM560 KRT-E, RAV-SM800 AT-E, RAV-SM800 KRT-E, RAV-SM800 BT-E, RAV-SM800 XT-E, RAV-SM560 UT-E, RAV-SM560 AT-E, RAV-SM800 UT-E 181 Pages

DETACHMENTS. Toshiba RAV-SM560 BT-E, RAV-SM560 XT-E, RAV-SM560 KRT-E, RAV-SM800 AT-E, RAV-SM800 KRT-E, RAV-SM800 BT-E, RAV-SM800 XT-E, RAV-SM560 UT-E, RAV-SM560 AT-E, RAV-SM800 UT-E

15. DETACHMENTS

15-1. Indoor Unit

15-2. Replacement of Distributor Assembly

15-3. Replacement of Main Parts <Built-in type>

[SUPPLEMENT] How to remove the electric parts box

15-4. Replacements of Main Parts <Hi-Wall type>

15-4-1. Indoor Unit

15-4.2. Replacement Procedure of Service Main P.C. Board

Replacement Procedure of Indoor Control P.C. Board

[Mounting]

In case of AIK-PXXXH series

<(Reference) Explanation about functions of switches/jumpers>

<Parts layout of service P.C. board>

15-5. Outdoor Unit

Key Features

Frequently Answers and Questions

What are the different types of indoor units available?

What is the standard capacity of the units?

What is the sound level of the outdoor unit?

Related manuals

Toshiba

MiNi SMMS

Toshiba

RAV-SM800 XT-E

Mitsubishi Heavy Industries

QA-S SRK25QA-S

Toshiba

RAV-SP 1100UT-E

Toshiba

RBC-AS21E

Toshiba

RAS

Toshiba

RAV-SM562MUT-E

Toshiba

RAV-SM1100AT-E

Toshiba

RAV-SM 802UT-E

Philips

Hue White and Color Ambiance Επιτραπέζιο φωτιστικό Gradient Signe

Toshiba

RAV-SM 561AT-E

Toshiba

RAV-360UH-P/360AH8-P

Table of contents