CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS. 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

Toshiban lämmitys- ja jäähdytyslaitteiden jälleenmyyjä pääkaupunkiseudulla on Jäähdytinpalvelu RefGroup Oy

9. CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS

9-1. Microcomputer System Block Diagram

9-1-1. Connection of Main Remote Controller

Main (Sub) master remote controller

Display

LCD

Display

LED

CPU

TMP47C

820F

E E P R O M

Function setup

Ke y s w i t c h

Power circuit

AC synchronous signal input circuit

Serial send/ receive circuit

The P.C. boards of the indoor unit are classified into 4 boards according to the function.

1. Main P.C. board (MCC-1370A)

Controller for power circuit, fan motor

driver, and whole unit

2. Sub P.C. board (MCC-1370B)

Setup of unit No. and concurrent twin

* The sub P.C. board is located near the

remote controller terminal block.

3. Sensor display P.C. board (MCC-819)

Wireless remote controller receive part,

LED display part

4. Communication P.C. board (MCC-1337)

Communication part with the central

control remote controller (Option)

A B C

Max. 16 units are connectable.

Indoor unit

#1

Sensor display P.C. board

(MCC-819)

A B C

Main P.C. board (MCC-1370A)

E E P R O M

Sensors LED


TA shift setup

Model selection

Function setup

Remote controller

No. setupTwin/

Triple setup

Sub P.C. board

(MCC-1370B)

Optional output

Comp.

Run

Error

Heat

Driver

CPU

TMP87CM

40AN

(TMP87PM

40AN)

TA sensor

TC sensor

TCJ sensor

Louver motor

Indoor fan motor

Transformer

DC310~340V

Indoor fan control circuit

DC

12V DC

5V

DC15V

Power circuit



1 2 3

1 2 3

Communication

LSI

Pulse trans

MCC-1337

Communication P.C. board (Option)

X Y

#2

B C

Same as the left

1 2 3

#3

B C

Same as the left

1 2 3

Outdoor unit

Outdoor unit

Outdoor unit

–

48

– www.ilmalämpöpumput.com


9-1-2. Connection of Wireless Remote Controller

Indoor unit

#1

Infrared radiation

Main P.C. board (MCC-1370A)

E E P R O M

Sensors LED

Sensor display

P.C. board

TA shift setup

Model selection

Function setup

CPU

Remote controller

No. setupTwin/

Triple setup

Sub P.C. board(MCC-1370B)

Optional output

Comp.

Run

Error

Heat

Louver motor

Indoor fan motor

Driver

Indoor fan control circuit

DC

12V

DC

5V

DC15V

Power circuit


TMP87CM

40AN

(TMP87PM

40AN)


Transformer

DC310~340V

TA sensor

TC sensor

TCJ sensor

1 2 3

Communication

LSI

MCC-1337

Pulse trans

Communication P.C. board (Option)

1 2 3

X Y

Outdoor unit

–

49



9-1-3. Control Specifications

No.

1

Item

When power supply is reset

2 Operation mode selection

Outline of specifications

1) Distinction of outdoor units

When the power supply is reset, the outdoors are distinguished, and control is exchanged according to the distinguished result.

2) Setting of the indoor fan speed

Based on EEPROM data, rspeed of the indoor fan is selected.

1) Based on the operation mode selecting command from the remote controller, the operation mode is selected.

Remote controller command

STOP

FAN

COOL

DRY

HEAT

AUTO

Outline of control

Air conditioner stops.

Fan operation

Cooling operation

Dry operation

Heating operation

Ta

( C)

+3

Tsc or Tsh

–

3

COOL

(COOL OFF)

(COOL ON)

Heating

1) Judge the selection of COOL/HEAT mode as shown in the figure below.

When the heating operation (Thermo OFF) is exchanged to cooling operation if Tsh exceeds +3 or more.

(COOL OFF) and (COOL ON) in the figure indicate an example.

When the cooling operation (Thermo OFF) is exchanged to heating operation if Tsc exceeds -3 or less.

2) For the automatic capacity control after judgment of

COOL/HEAT, refer to item 4.

3) For the temperature correction of room temperature control in automatic heating operation, refer to item 3.

Remarks

Air speed

Ta : Room temperature

Ts : Setup temperature

Tsc : Setup temperature in cooling operation

Tsh : Setup temperature in heating operation

3

Room temperature control

1) Adjustment range Remote controller setup temperature (

°

C)

Standard type

Wireless type

COOL/

DRY

18 to 29

17 to 30

Heating operation

18 to 29

17 to 30

Auto operation

18 to 29

19 to 29

Max. setup temperature

Ts (Max) = 35

°

C

Remote controller setup temp

Setup temp (

°

C)

▼ 5 ▼ 4 ▼ 3 ▼ 2 ▼ 1 Standard ▲ 1 ▲ 2 ▲ 3 ▲ 4 ▲ 5

19 20 21 22 23 24

2) Differential 1K (=deg)

3) In heating operation, the setup temperature can be corrected by using Dip switch (SW03) on the indoor

P.C. board.

25 26 27 28 29

SW03

1

2

Setup temp correction

ON ON OFF OFF

ON OFF ON OFF

+0

°

C +2

°

C +4

°

C +6

°

C

Setup at shipment

SW03

1

ON

2

OFF

–

50



No.

4

Item Outline of specifications

Automatic capacity control

1) Based on the difference between Ta and Ts, the operation frequency is instructed to the outdoor unit.

(GA control)

NOTE :

In cooling operation :

When calculating the following conditions for 29 minutes, the commanded frequency is assumed as the rated cooling frequency.

3

4

1

2

Ta < 28

°

C

Indoor fan [High]

32

°

C < To

≤

38

°

C or no To

Operation exceeding the rated cooling frequency

In heating operation: When calculating the following conditions for 29 minutes, the commanded frequency is assumed as the rated heating frequency.

1

2

3

4

5

Ta

≥

19

°

C

Indoor fan [High]

5

°

C < To

≤

10

°

C or no To

Operation exceeding the rated heating frequency

Tc

≥

38

°

C

5

Air volume control

<HEAT>

Ta

( C)

+0.5

Tsc

–

0.5

–

1.0

–

1.5

Remarks

NOTE :

When air volume is set to [L], the maximum frequency is restricted.

1) Operation with [HIGH (H)], [MED (M)], [LOW (L)], or

[AUTO] mode is performed by the command from the remote controller.

2) When the air volume mode [AUTO] is selected, the air volume varies by the difference between Ta and Ts.

<COOL>

Ta

( C)

+1.5

+1.0

+0.5

Tsc

–

0.5

Normal cooling

H

(HIGH)

Cooling of

Auto cooling/ heating

H

(HIGH)

M+

M

(MED)

M+

M+

L+

L

(LOW)

M

(MED)

L+

Tc : Temperature of indoor heat exchanger sensor

UH > H > M+ > M > L + >

L > UL

Normal heating

Heatiing of

Auto cooling/ heating

L

UL (Ultra Low) only in Comp OFF

L+

L+ M

(MED)

M

(MED)

M+

M+

H

(HIGH)

M+

H

UH

–

51



No.

5

Item

Air volume control

(Continued)

Outline of specifications Remarks

Tap

FA

FB

FC

FD

F7

F8

F9

F4

F5

F6

Air volume setup

COOL, DRY, FAN HEAT

H

M+

M

L+

L

UH

H

M+

M

L+

L

UL

SM560 SM800

Revolutions per minute (rpm)

1290

1230

1180

1480

1480

1340

1150

1120

1060

1060

990

940

900

1320

1310

1200

1200

1100

1040

900

3) In heating operation, the mode changes to [Ultra

Low (UL)] or [STOP] if thermostat is turned off.

4) If Ta

≥

25

°

C when heating operation has started and when defrost operation has been cleared, it operates with MED mode or higher mode for 1 minute from when Tc has entered in A zone of cool air discharge preventive control (Item 6).

5) In automatic cooling/heating operation, the revolution frequency of [HIGH (H)] is set larger than that in the standard cooling/heating operation. However the revolution frequency is restricted in the automatic heating operation as shown in the following figure.

“

Stop

”

is a

“ cool air discharge preventive control

”

operation by Tc.

Tc: Indoor heat exchanger sensor temp.

F5 F4

Tc

( C)

47

42

F4

6

6) (For wireless type only) The mode enters [AUTO] in automatic cooling/heating operation.

7) The mode enters [LOW (L)] during Dry operation

Cool air discharge preventive control

1) In heating operation, the indoor fan is controlled based on the detected temperature of Tc sensor.

As shown below, the upper limit of the revolution frequency is determined.

Tc( C)

30

A

A zone : Setup air volume from remote controller

B zone : Low air

C zone : OFF

26

20

16

C B

Display: [AUTO]

Display in C zone

Display of main unit:

Defrost LED goes on.

When wired remote controller is installed:

PRE-HEAT/DEFROST goes on remote controller.

–

52



No.

7

Item

Freeze preventive control

(Low temperature release)


1) The cooling operation (including Dry operation) is performed as follows based on the detected temperature of Tc sensor or Tcj sensor.

When [J] zone is detected for T1 minutes (Following figure), the commanded frequency is decreased from the real operation frequency. After then the commanded frequency changes every 30 seconds while operation is performed in [J] zone.

Normal

Twin

T1

6 minutes

6 minutes

Remarks

Tcj : Indoor heat exchanger sensor temperature

In [K] zone, time counting is interrupted and the operation is held.

When [I] zone is detected, the timer is cleared and the operation returns to the normal operation.

If the commanded frequency becomes S0 because the operation continues in [J] zone, the return temperature A is raised from 5

°

C to 12

°

C until [I] zone is detected and the indoor fan operates with [L] mode.

( C)

5

I

A

K

2

J

8

In heating operation, the freeze-preventive control works if 4-way valve is not exchanged and the condition is satisfied.

High-temp release control

1) The heating operation is performed as follows based on the detected temperature of Tc sensor.

•

When [M] zone is detected, the commanded frequency is decreased from the real operation frequency. After then the commanded frequency changes every 30 seconds while operation is performed in [M] zone.

•

In [N] zone, the commanded frequency is held.

•

When [L] zone is detected, the commanded frequency is returned to the original value by approx. 6Hz every 60 seconds.

Setup at shipment

Control temp (°C)

A B

56 (54) 52 (52)

Tc ( C)

A

B

M

L

N

NOTE :

When the operation has started or when Tc became lower than 30

°

C after start of the operation, temperature is controlled between values in parentheses of A and B.

Same when thermostat is turned off.

–

53



Remarks No.

9

Item

Louver control

1) Louver position


The louver angle is displayed setting 0

°

as

“

Full close

”

.

Full close

1) In the initial operation after

0 power-ON, the position is automatically controlled according to the operating status (COOL/HEAT).

Cooling Heating

2) Air direction adjustment

(Swing operation)

10

Frequency fixed operation

(Test run)

45 103

2) After then a louver position is stored in the microcomputer every time when position is operated on the remote controller, and the louver operates at the position stored in memory in the next operation and after.

* If the operation mode has been changed from COOL to HEAT, from HEAT to COOL, or the power has turned off, the stored louver position is cleared and the status returns to one in item 1).

1) When pushing [LOUVER] button during operation, the louver starts swinging.

2) When the louver has arrived at the desired position, push

[LOUVER] again. The louver stops at that position.

1) In case of wired remote controller

1. When pushing [ON/OFF] button on the remote controller continuously for 5 seconds, the mode enters [TEST]. The indoor fan rotates with [HIGH] and a frequency fixed operation starts.

2. During this operation, the buttons other than [ON/

OFF], [UP

△

] and [DOWN

▽

] cannot be accepted.

However, items 7 and 8 are effective.

3. To stop the frequency fixed operation, use [ON/OFF] button only.

2) In case of wireless remote controller (Without wired remote controller)

1. When pushing [Temporary] button continuously for

10 seconds or more,

“

Pi

”

sound is heard and the mode enters [TEST]. The indoor fan rotates with

[HIGH] and a frequency fixed operation of [COOL] starts.

NOTES :

•

Temporary button is provided to near the display part of the main unit when opening the front panel.

•

If [Temporary] button is not continuously pushed for 10 seconds,

“

Automatic heating/cooling operation

”

is performed.

2. To stop the operation, push [Temporary] button again.

NOTE :

Operation on the wireless remote controller is not accepted.

[COOL]/[HEAT] flash.

Air volume: [AUTO]

Temperature

COOL: [L]

HEAT: [H]

Commanded frequency

Approximately [S7]

–

54



No.

11

Item

Filter sign display

Outline of specifications Remarks

1) The operation time of the indoor fan is calculated, the filter lamp (Orange) on the display part of the main unit goes on when the specified time (240H) has passed. When a wired remote controller is connected, the filter reset signal is sent to the remote controller, and also it is displayed on LCD of the wired remote controller.

2) When the filter reset signal has been received from the wired remote controller after [FILTER] lamp has gone on or when the filter check button (Temporary button) is pushed, time of the calculation timer is cleared. In this case, the measurement time is reset if the specified time has passed, and display on

LCD and the display on the main unit disappear.

[FILTER] goes on.

12

Central control mode selection

1) Setting at the central remote controller side enables to select the contents which can be operated on the remote controller at indoor unit side.

2) Operation contents on the remote controller at indoor unit side

[Last push priority] :

The operation contents can be selected from both remote controller and the central controller of the indoor unit side, and the operation is performed with the contents selected at the last.

[Center] :

Start/Stop operation only can be handled on the remote controller at indoor unit side.

[Operation Prohibited] :

It cannot be operated on the remote controller at indoor unit side.

(Stop status is held.)

3) Display on the display part of the main unit or wired remote controller

Setup on central control remote controller

Last push priority

Center

Operation prohibited

Display on wired remote controller

(In case of RBC-AM1)

[Central control] goes off.

[Central control] goes on.

[Central control] flashes.

Display on wired remote controller

(In case of RBC-AM1)

[Center] goes off.

[Center] goes on.

[Center] flashes.

Display on main unit

(Only in case of no wired remote controller)

No display

[DEFROST] lamp (Orange) 1Hz flashes.

[DEFROST] lamp (Orange) 5Hz flashes.

NOTE : When a wired remote controller is connected, there is no display on the main unit.

13

Energy-save control

(By connected outdoor unit)

14

Max. frequency cut control

1) Selecting [AUTO] mode enables an energy-saving to be operated.

2) The setup temperature is shifted (corrected) in the range not to lose the comfort ability according to input values of various sensors.

3) Data (Input value room temp. Ta, Outside temp. To, Air volume, Indoor heat exchanger sensor temp. Tc) for 20 minutes are taken the average to calculate correction value of the setup temperature.

4) The setup temperature is shifted every 20 minutes, and the shifted range is as follows.

In cooling time : +1.5 to

–

1.0K

In heating time :

–

1.5 to +1.0K

1) This control is operated by selecting

[AUTO] operation mode.

2) COOL operation mode: the frequency is controlled according to the following figure if To < 28

°

C.

Ta( C)

+4

Normal control

+3

Max. frequency is restricted to approximately the rated cooling frequency

Tsc

3) HEAT operation mode: the frequency is controlled according to the right figure if To > 15

°

C.

Ta( C)

Tsh

-3

Max. frequency is restricted to approximately the rated heating frequency

-4

Normal control

–

55



9-2. Indoor Control Circuit

9-2-1. Print Circuit Board

<Main P.C. board (MCC-1370A)>

<Sub P.C. board (MCC-1370B)>

–

56



9-2-2. Outline of Main Controls

1. Pulse Modulating Valve (PMV) control

1) For PMV, SM560 is controlled with 45 to 500 pulses and SM800 with 50 to 500 pulses during operation, respectively.

2) In cooling operation, PMV is controlled with the temperature difference between TS sensor and TC sensor.

3) In heating operation, PMV is controlled with the temperature difference between TS sensor and TE sensor.

4) For the temperature difference in items 2) and 3), 1 to 5K is aimed as the target in both cooling and heating operations.

5) When the cycle excessively rose in both cooling and heating operations, PMV is controlled by TD sensor.

The aimed value is usually 105

°

C for SM560 and 100

°

C for SM800 in both cooling and heating operations.

REQUIREMENT

A sensor trouble may cause a liquid back-flow or abnormal overheat resulting in excessive shortening of the compressor life. In a case of trouble on the compressor, be sure to check there is no error in the resistance value an the refrigerating cycle of each sensor after repair and then start the operation.

2. Discharge temperature release control

1) This function controls the operation frequency, that is, lowers the operation frequency when the discharge temperature has not lower or the discharge temperature has rapidly risen during PMV control. It subdivides the frequency control up to a unit of 0.6Hz to stabilize the cycle.

2) When the discharge temperature is detected in an abnormal stop zone, the unit stops the compressor and restarts after 2 minutes 30 seconds. The error counter is cleared when it has continued the operation for 10 minutes.

If the abnormal stop zone has been detected by 4 times without clearing of counter, an error

‘

P03

’

is displayed.

* The cause is considered as excessively little amount of refrigerant, defective PMV, or clogging of cycle.

[

°

C]

SM560

SM800 a

117

111 b

112

106 c

108

100 d

105

95 e

98

90

TD [ C] a b c

Error stop ("P03" display with 4 times of error counts)

Frequency down

Frequency holding d

Frequency slow-up

(Up to command) e

As command is

3. Current release control

The output frequency and the output voltage are controlled by AC current value detected by T02 on the outdoor P.C. board so that input current of the inverter does not exceed the specified value.

Objective model

SM560

COOL HEAT

10.22

10.35

SM800

COOL HEAT

13.00

14.43

I1 value [A]

* For the cooling only models, only COOL is objective.

I1

1

–

0.5

–

57


[A]

Frequency down

Hold

Hold

Normal operation


9-2-3. Indoor P.C. Board Optional Connector Specifications

Function

Option output

Outside error input

Filter option error

CHK

Operation check

DISP display mode

EXCT demand

Connector

No.

Pin

No.

CN60 1

Specifications

DC12V (COM)

CN80

CN70

CN71

CN72

CN73

2

3

4

5

6

Defrost output

Thermo. ON output

Cooling output

Heating output

Fan output

Remarks

ON during defrost operation of outdoor unit

ON during Real thermo-ON (Comp ON)

ON when operation mode is in cooling system

(COOL, DRY, COOL in AUTO cooling/heating)

ON when operation mode is in heating system

(HEAT, HEAT in AUTO cooling/heating)

ON during indoor fan ON

(Air purifier is used/Interlock cable)

(When continued for 1 minute)

Check code

“

L30

”

is output and forced operation stops.

1 DC12V (COM)

2 DC12V (COM)

3 Outside error input

1

2

Filter/Option/Humidifier setup input

Option error input is controlled. (Protective operation for device attached to outside is displayed.)

0V * Setting of option error input is performed from remote controller. (DN=2A)

1

2

Check mode input

0V

Used for operation check of indoor unit. (Communication with outdoor unit or remote controller is not performed, but the specified operation such as indoor fan

“

H

”

or drain pump ON is output.)

Display mode enables indoor unit and remote controller to communicate. (When power is turned on)

1 Display mode input

2

1

0V

Demand input

2 0V

Forced thermo-OFF operation in indoor unit

–

58



IGB module

5V power supply MCU GND

12V power supply

PMV output

TD sensor

TS sensor

TE sensor

TO sensor

Case thermo

Outdoor fan rpm input

Outdoor fan output

4-way valve output

(Except cooling only models)

Converter module www.ilmalämpöpumput.com


4-way valve output

Pump down switch

12V power supply

PMV output

Case thermo

Contactor against night low-noise

5V power supply

TD sensor

TO sensor

TE sensor

TS sensor

Communication between CDB and IPDU

Existing pipe corresponding switch

(SW 801)

Outdoor fan output

GND

MCU

Status display LED www.ilmalämpöpumput.com


9-3-2. Outline of Main Controls

1. Outdoor fan control (Object: SM80)

SM800

Allocautions of fan tap revolutions [rpm]

W1 W2 W3 W4 W5 W6 W7 W8 W9 WA WB WC WD WE

250 270 290 310 340 370 400 440 480 520 560 610 700 780

1) Cooling fan control

Q

The outdoor fan is controlled by TE sensor.

(Cooling: Temperature conditions after medium term)

The cooling fan is controlled by every 1 tap of DC fan control (14 taps).

R

At the activation time, although the maximum fan tap in the following table are fixed for 60 seconds, after then the fan may not rotate with high speed for several minutes because the fan is controlled by TE sensor value. It is not an abnormal status.

S

When the discharge temperature sensor is abnormal or the sensor comes off the holder, the fan does not rotate with high speed, but a protective device works.

T

When the outdoor fan does not rotate with high speed, judge a fan error by comparing the control data in the following table with TO and TE values.

TE [ C]

46

37

34

20

MAX.

+30 rpm / 20 sec.

Hold zone

–

30 rpm / 20 sec.

MIN.

TO

MIN

MAX

TO < 5

°

C

W1

W6

Control for fan tap by outdoor temperature in normal operation

5

≤

TO <10

°

C 10

≤

TO < 15

°

C 15

≤

TO < 20

°

C 20

≤

TO < 25

°

C 25

°

C

≤

TO

W2 W3 W4 W5 WA

W8 WA WC WE WE

TO error

W1

WE

2) Heating fan control

Q

This control function lowers fan tap according to

TE sensor value when outdoor temperature is high.

R

When a status TE > 20

°

C is detected continuously for 5 minutes, the operation may stop. This status does not output an error code and is assumed as usual status of thermo-OFF. The fan restarts after approx. 2 minutes 30 seconds and this intermittent operation is not a trouble.

S

If the status in item

R

is frequently found, it is considered that the filter of suction part of the indoor unit is dirty. Clean the filter and restart the operation.

T

This control function does not work for 30 minutes after activation, 1 minute after defrosting, and during defrost operation.

TE [ C]

–

60 rpm / 20 sec. STOP timer count

24

–

60 rpm / 20 sec.

21

–

30 rpm / 20 sec.

17

Hold zone

15

+30 rpm / 20 sec.

–

61



2. Outdoor fan control (Object: SM560)

The outdoor fan is controlled by TO sensor and the revolutions frequency of the compressor (rps).

The outdoor fan is controlled by every 1 tap of DC fan control (8 taps). According to each operation mode, the fan is operated by selecting an outdoor fan operation tap in the following table based upon the conditions of TO sensor and the compressor operation (rps).

SM560

Tap

Revolutions per minute (rpm)

Allocations of fan tap revolutions

F1 F2 F3 F4

960 870 870 870

F5

750

F6

700

F7

540

F8

390

In cooling operation

Frequency of the compressor (rps)

TO

≥

38

°

C

TO < 38

°

C

To 14

F7

F7

To 14

F4

F5

35 to MAX

F3

F4

In heating operation

Frequency of the compressor (rps)

TO

≥

5.5

°

C

TO < 5.5

°

C

To 14

F7

F6

To 14

F6

F6

35 to MAX

F4

F3

3. Coil heating control

1) This control function heats the compressor by turning on the stopped compressor instead of a case heater. It purposes to prevent slackness of the refrigerant inside of the compressor.

2) As usual, turn on power of the compressor for the specified time before a test run after installation, otherwise a trouble of the compressor may be caused. As same as a test run, it is recommended to turn on power of the compressor beforehand when starting operation after power of the compressor has been interrupted for a long time.

3) A judgment for electricity is performed by TD and TO sensors. If TO sensor is defective, a backup control is automatically performed by TE sensor. For a case of defective TO sensor, judge it with the outdoor LED display.

4) Coil heating is controlled by TD and TE sensor.

5) For every model, the power is turned off when TD is 30

°

C or more.

Power-ON condition

TD < 30 C

TO [

18

15

10

8

C]

No power-ON

Continuous ON (L)

Continuous ON (M)

(In trouble of sensor)

TO [ C]

20

18

12

10

No power-ON

Continuous ON (L)

Continuous ON (M)

L

M

SM800

20W and equivalent

40W and equivalent

TO [ C]

(Object: SM560)

10

9

4

3

2

1

No power-ON

Continuous ON (L)

Continuous ON (M)

Continuous ON (H)

L

M

H

SM560

10W and equivalent

20W and equivalent

30W and equivalent

–

62



NOTIFICATION

It is not an abnormal phenomenon that electro-noise may be heard while heating the coil.

4. Short intermittent operation preventive control

Q

The compressor may not stop for preventing the compressor for 3 to 10 minutes after start of the operation even if Thermo-OFF signal has been received from the indoor. This phenomenon is not abnormal. (Continuous operation time of the compressor differs according to the operating status.)

R

If the equipment is stopped from the remote controller, the operation does not continue.

5. High-voltage suppression TE control (Only for SM800)

Q

This control suppresses that voltage becomes abnormally higher during cooling operation.

R

Stop the compressor under condition of TE

≥

67

°

C, and count 1 on the error count.

S

After 2 minutes 30 seconds passed, if TE < 67

°

C, the compressor restarts and the error count is cleared when the operation continues for 10 minutes.

T

When TE

≥

67

°

C is detected again within 10 minutes, 1 is added to the error count and restart is repeated.

U

If the error counts 10 are recognized, it is determined as an error and restart is not performed. Error code

‘

P04

’

is displayed.

V

After restarting the compressor, continue controlling by using 70% to 90% of the control value of the current release control for minimum 30 minutes.

6. Over-current preventive control

Q

This control function stops the compressor when over-current preventive circuit has detected an abnormal current.

R

The compressor restarts with error count 1 after 2 minutes 30 seconds.

S

If the error counts 4 are recognized, it is determined as an error and restart is not performed. Error code

‘

H01

’

,

‘

H02

’

or

‘

P26

’

is displayed.

7. Current release value shift control

1) Object: SM800

Q

This control function prevents troubles of the electron parts such as G-Tr of inverter of compressor drive system and troubles of the compressor during cooling operation.

R

This control function corrects the current release control value ( 1) in item 3 of 9-2-2 by TO sensor value.

S

The value to be corrected is based upon the following control diagram and correction value table.

Corrected value

TO [ C]

SM800

T a b c d

39

°

C 40

°

C 60

°

C 80

°

C 85

°

C

T+8

T+7

T+5

T+4

T+2

T+1

T

T-1

I

1 x a%

I 1 x b%

I

1 x c%

I

1 x d%

As I 1

2) Object: SM560

The current release value of a single-phase model is selected from the right table according to TO sensor value.

Current release value shift control

TO

45

≤

TO

40

≤

TO < 45

TO < 45

SM560

7.07

7.90

10.22

–

63



8. Defrost control

Q

In heating operation, defrost operation is performed when TE sensor temperature satisfies any condition in A zone to D zone.

R

The defrost operation is immediately finished if TE sensor temperature has become 12

°

C or more, or it also is finished when condition of 7

°

C

≤

TE < 12

°

C has continued for 1 minute. The defrost operation is also finished when defrost operation has continued for 10 minutes even if TE sensor temperature has become 7

°

C or lower.

S

After defrost operation has finished, the compressor and the outdoor fan start heating operation after stopped for approx. 50 seconds.

Start of heating operation

10

TE [

º

C]

0

–

5

–

10

–

13

–

18

15

* c b a d [min]

* The minimum TE value between 10 and 15 minutes after heating operation has started is stored in memory as TE0.

c d a b

T

A zone

B zone

C zone

D zone

Defrost operation is performed in this zone when TE0-TE

≥

3 continued for T seconds.

Defrost operation is performed in this zone when TE0-TE

≥

3 continued for T seconds.

Defrost operation is performed when this zone continued for T seconds.

Defrost operation is performed when this zone continued for T seconds.

SM560

28

28

28

60

120

SM800

34

40

55

90

120

–

64


CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS. 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

CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS. 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

9. CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS

9-1. Microcomputer System Block Diagram

9-1-1. Connection of Main Remote Controller

9-1-2. Connection of Wireless Remote Controller

Indoor unit

Infrared radiation

Main P.C. board (MCC-1370A)

E E P R O M

Sensors LED

Sensor display

P.C. board

CPU

Optional output

Comp.

Run

Error

Heat

Louver motor

Indoor fan motor

Driver

Indoor fan control circuit

DC

12V

DC

5V

DC15V

Power circuit

TMP87CM

40AN

(TMP87PM

40AN)

Transformer

DC310~340V

TA sensor

TC sensor

TCJ sensor

1 2 3

1 2 3

X Y

Outdoor unit

9-1-3. Control Specifications

9-2. Indoor Control Circuit

9-2-1. Print Circuit Board

9-2-2. Outline of Main Controls

REQUIREMENT

9-2-3. Indoor P.C. Board Optional Connector Specifications

9-3-2. Outline of Main Controls

NOTIFICATION

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?

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