Mitsubishi Electric PAC-YT52CRA Manuale utente

– 1 –

Safety precautions............................................................... 2

Names and functions of controller components .................. 4

Controller interface .......................................................... 4

Display............................................................................. 5

Basic operations.................................................................. 6

Operation mode............................................................... 6

Preset temperature.......................................................... 7

Fan speed........................................................................ 8

Vane ................................................................................ 8

Controller operation - Function settings .............................. 9

Temperature range restriction ......................................... 9

Operation lock setting.................................................... 10

Mode skip setting........................................................... 10

Backlight brightness setting........................................... 11

Specifications .................................................................... 12

Icon explanations

The square icons used in this manual indicate as follows.

Indicates settings that can be changed only while the

units are in operation.

Indicates settings that can be changed only while the

units are stopped.

Indicates functions that are not available when the

buttons are locked or the system is centrally controlled.

Prior to use, thoroughly read the instructions in this manual to use the product correctly.

Retain for future reference.

Make sure that this manual and Installation Manual are passed on to any future users.

To ensure safety and proper operation of the remote controller, the remote controller should only be

installed by qualified personnel.

OFF

CITY MULTI Control System

and Mitsubishi Mr. SLIM Air Conditioners

Simple MA Remote Controller PAC-YT52CRA

Instruction Book

DFESINLPRGRRUTRSCTCDESW

WT06591X01.book Page 1 Tuesday, April 17, 2012 3:29 PM

– 2 –

Safety precautions

• Read the following safety precautions before using the controller.

• Observe these precautions carefully to ensure safety.

• After reading this manual, provide this manual to end user for future reference.

• Keep this manual for future reference and refer to it as necessary. This manual should be made

available to those who repair or relocate the controller. Make sure that the manual is forwarded to

future end users.

WARNING

CAUTION

WARNING

WARNING Indicates a risk of death or serious injury if you misuse the PAC-YT52CRA.

CAUTION Indicates a risk of serious injury or structural damage if you misuse the

PAC-YT52CRA.

General precautions

Precautions for moving or repairing the controller

Do not install the unit in a place where large amounts of

oil, steam, organic solvents, or corrosive gases, such

as sulfuric gas, are present or where acidic/alkaline

solutions or sprays are used frequently. These

substances can compromise the performance of the

unit or cause certain components of the unit to corrode,

which can result in electric shock, malfunctions,

smoke, or fire.

To reduce the risk of shorting, current leakage, electric

shock, malfunctions, smoke, or fire, do not wash the

controller with water or any other liquid.

To reduce the risk of electric shock, malfunctions,

smoke or fire, do not operate the switches/buttons or

touch other electrical parts with wet hands.

When alcohol sterilization is performed, ventilate the

air to remove the gas.

To reduce the risk of injury or electric shock, stop the

operation and switch off the power supply before

cleaning, maintaining, or inspecting the controller.

To reduce the risk of injury or electric shock, before

spraying a chemical around the controller, stop the

operation and cover the controller.

If any abnormality (e.g., burning smell) is noticed, stop

the operation, turn off the power switch, and consult

your dealer. Continuing the operation may result in

electric shock, malfunctions, or fire.

Properly install all required covers to keep moisture

and dust out of the controller. Dust accumulation and

water can cause electric shock, smoke, or fire.

To reduce the risk of damage to the controller, do not

directly spray insecticide or other flammable sprays on

the controller.

To reduce the risk of electric shock or malfunctions, do

not touch the touch panel, switches, or buttons with a

pointy or sharp object.

To reduce the risk of injury and electric shock, avoid

contact with sharp edges of certain parts.

To reduce the risk of injury, wear protective gear when

working on the controller.

Consult your dealer for the proper disposal of the

controller.

The controller should be repaired or moved only by

qualified personnel.

Do not disassemble or modify the controller.

Improper installation or repair may cause injury, electric

shock, or fire.

WT06591X01.book Page 2 Tuesday, April 17, 2012 3:29 PM

– 3 –

CAUTION

Additional precautions

To reduce the risk of shorting, electric shock, fire, or

malfunction, do not touch the circuit board with tools or

with your hands, and do not allow dust to accumulate

on the circuit board.

To avoid damage to the unit, use appropriate tools to

install, inspect, or repair the unit.

To avoid discoloration, do not use benzene, thinner, or

chemical rag to clean the controller.

To clean the controller, wipe with a soft cloth soaked in

water with mild detergent, wipe off the detergent with a

wet cloth, and wipe off water with a dry cloth.

WT06591X01.book Page 3 Tuesday, April 17, 2012 3:29 PM

– 4 –

Names and functions of controller components

Controller interface

Backlit LCD

button (See Page 7.)

button (See Page 6.)

ON/OFF lamp

button

OFF

button (See Page 7.)

button (See Page 8.)

* To set the functions that are not available on this controller (PAC-YT52CRA) such as Louver,

use MA remote controller or the centralized controller.

The lamp will light up in green when

turned on, and blink during startup

and when an error occurs.

Pressing this button starts and

stops the operation.

WT06591X01.book Page 4 Tuesday, April 17, 2012 3:29 PM

– 5 –

Display

*2 icon

For Mr. SLIM, when an error occurs, power indicator will blink, and refrigerant address (two digits), error code

(two digits), and unit No. will blink.

For City Multi, when an error occurs, power indicator will blink, and unit address (three digits) and error code (four

digits) will blink.

Check the error status, stop the operation, and consult your dealer.

When only error code blinks, air conditioning units stay in operation, but an error may have occurred.

Check the error code, and consult your dealer.

[Mr. SLIM] [City Multi]

Refrigerant

address and unit

attribute appear

alternately.

Error code and

unit No. appear

alternately.

Unit address

blinks.

Error code

blinks.

Error code

blinks.

Error code

blinks.

icon appears while the unit is operated in the

energy-save mode

* All icons are displayed for explanation.

icon appears when Operation lock setting is

effective. (See page 10.)

icon appears when indoor unit functions are set up.

(Refer to the Installation Manual.)

Fan speed icon

Vane icon

icon appears when the power is on.

Indoor temperature

Operation modes

CENTRAL icon *1

CHECK icon *2

Preset temperature *3

*1 icon

Appears when one of the following local operations is prohibited: ON/OFF; operation mode; preset temperature;

fan speed; vane.

CENTRAL

*3 Preset temperature

* Centigrade or Fahrenheit is selectable. Refer to the Installation Manual for details.

In COOL, DRYING, HEAT, or

AUTO (single set point) modes In AUTO (dual set point) mode

Preset

temperature

Heating preset

temperature

Cooling preset

temperature

WT06591X01.book Page 5 Tuesday, April 17, 2012 3:29 PM

– 6 –

Basic operations

Pressing the button will change the operation mode in the following order.

*1: Not all functions are available on all models of indoor units. Functions that are not available will not

appear on the display.

*2: The preset temperature for AUTO (either single or dual set point) mode will appear depending on

the indoor unit model.

*3: Available only on the Mr. SLIM unit interlocked with LOSSNAY unit.

"VENTI." will light up when LOSSNAY unit operates while the unit is in operation.

AUTO (dual set point) mode:

In AUTO (dual set point) mode, the preset temperatures can be set for cooling and heating, and

operation can be switched automatically between cooling and heating depending on the room

temperature.

The preset temperatures for cooling and heating set in AUTO (dual set point) mode will be reflected

to the temperature setting for COOL/DRYING and HEAT modes.

Operation mode

*1 *1 *1*1, *2 *1, *3

COOL DRYING FAN AUTO HEAT VENTI.

During operation in AUTO (dual set point) mode

Preset temp.

(COOL)

Preset temp.

(HEAT)

HEAT

Room

temperature

HEATCOOL COOL

The room temperature

changes corresponding

to the change in the

outside temperature.

WT06591X01.book Page 6 Tuesday, April 17, 2012 3:29 PM

– 7 –

In COOL, DRYING, HEAT, and AUTO (single set point) modes

Pressing the button increases the preset temperature.

Pressing the button decreases the preset temperature.

In AUTO (dual set point) mode

* During the preset temperature setting, the setting will automatically turn off if the or

button is left untouched for a certain period of time.

Preset temperature

Cooling preset temperature

Heating preset temperature

Current operation mode

Current preset temperature (cooling/heating) appears.

When the or button is pressed, the preset temperature

(cooling/heating) display blinks.

While the preset temperature (cooling/heating) display blinks, pressing the

button increases the preset temperatures for both cooling and

heating, and pressing the button decreases the preset temperatures

for both cooling and heating.

When the button is pressed, only the cooling preset temperature display

blinks.

While the cooling preset temperature display blinks, pressing the

button increases the cooling preset temperature, and pressing the

button decreases the cooling preset temperature.

When the button is pressed, only the heating preset temperature display

blinks.

While the heating preset temperature display blinks, pressing the

button increases the heating preset temperature, and pressing the

button decreases the heating preset temperature.

Pressing the button completes the preset temperature setting.

WT06591X01.book Page 7 Tuesday, April 17, 2012 3:29 PM

– 8 –

Preset temperature range is as follows.

*1 Preset temperature range varies depending on the indoor unit model to be connected.

Refer to the Indoor unit Instruction Book for details.

*2 The preset temperatures for cooling and heating for AUTO (dual set point) mode will be used for those for

COOL/DRYING and HEAT mode.

*3 The preset temperatures for cooling and heating can be set under the following conditions.

• The cooling preset temperature is greater than the heating preset temperature.

• The difference between the cooling and heating preset temperatures is equal or greater than the minimum

temperature difference that varies depending on the indoor unit model to be connected.

Pressing the button will change the fan speed in the following order.

* The settable fan speed varies depending on the indoor unit model to be connected.

* If the unit has no fan setting function, the fan speed cannot be set.

In this case, the fan icon blinks when the button is pressed.

Pressing the button will switch the vane directions.

* The settable vane direction varies depending on the indoor unit model to be connected.

* If the unit has no vane function, the vane direction cannot be set.

In this case, the vane icon blinks when the button is pressed.

Operation mode Preset temperature range

COOL/DRYING 19 - 30°C/67 - 87°F *1

HEAT 17 - 28°C/63 - 83°F *1

AUTO (single set point) 19 - 28°C/67 - 83°F *1

AUTO (dual set point) [COOL] Preset temperature range for COOL mode.

[HEAT] Preset temperature range for HEAT mode. *2, *3

FAN, VENTI. Unsettable

Fan speed

Vane

AUTO

AUTO Setting 1 Setting 2 Setting 3 Setting 4 Setting 5 Swing

WT06591X01.book Page 8 Tuesday, April 17, 2012 3:29 PM

– 9 –

Controller operation - Function settings

The preset temperature range for each operation mode can be restricted.

1Press the button to stop the air conditioning unit.

2Press and hold the button for three seconds or longer to bring up the temperature range

restriction setting display. (A or B appears.)

3Press the button to select from A through D.

* When the AUTO (single set point) mode is not available on the indoor unit, or when the AUTO

mode is set to OFF in the Mode skip setting, D will not be displayed.

A. No temperature range restriction:

The temperature range restriction will not be executed for all modes.

B. Temperature range restriction for COOL/DRYING mode:

The preset temperature range for COOL/DRYING and AUTO (dual set point) modes

can be changed.

C. Temperature range restriction for HEAT mode:

The preset temperature range for HEAT and AUTO (dual set point) modes can be

changed.

D. Temperature range restriction for AUTO (single set point) mode:

The preset temperature range for AUTO (single set point) mode can be changed.

4Press the button to switch between the upper limit (Hi) and lower limit (Lo) settings.

Temperature range restriction

OFF

(1)

(3)

(2)

(6)

(4)

(5)

(4)

OFF

(Press the button for three seconds or longer.)

(Press the button for three

seconds or longer.)

B. Temperature range restriction for COOL/DRYING mode

D. Temperature range restriction for AUTO (single set point) mode

C. Temperature range restriction for HEAT mode

The air conditioning unit stops.

A. No temperature range

restriction

OFF

WT06591X01.book Page 9 Tuesday, April 17, 2012 3:29 PM

– 10 –

5Press the or button to set upper/lower limit value.

• Pressing the and buttons simultaneously can bring up the previous

temperature range of COOL/DRYING, HEAT, and AUTO modes.

• The temperature can be adjusted within the preset temperature range of the indoor unit.

Refer to the Indoor unit Instruction Book for details.

6Press and hold the button for three seconds or longer to complete the setting.

• If this action is taken while A is displayed, the temperature range restriction will not be executed.

• If this action is taken while one of B through D is displayed, all temperature range restrictions for

COOL/ DRYING, HEAT, and AUTO modes set in B through D will be executed.

If the preset temperature range has not been changed, the restriction will not be executed.

• After the temperature range restriction is executed, if the user tries to select a temperature

outside of the range, the preset temperature display will blink.

* The temperature range on this controller (PAC-YT52CRA) connected to the indoor units that have

the temperature range restriction function can be restricted also from the centralized controller

that has the same function.

This function can lock all buttons.

Locking the operations

While the operation lock is disabled ( icon is unlit.), press and hold the button for three

seconds or longer to enable the Operation lock. (A)

* While the operation lock is enabled, icon is lit. (B)

* If any button is pressed while the operation lock is enabled, icon will blink.

Unlocking the operations

While the operation lock is enabled ( icon is lit.), press and hold the button for three

seconds or longer to disable the Operation lock. (C)

The usability of AUTO mode can be set.

This setting is effective only when the controller is connected to the indoor units that have AUTO

mode.

Operation lock setting

Mode skip setting

A. Operation lock is enabled. B. While the operation lock is enabled. C. Operation lock is disabled.

OFF

(1)(3)

(2/4)+

OFF ON

OFF

(Press the buttons for three

seconds or longer.)

A. AUTO mode

The air conditioning unit stops.

WT06591X01.book Page 10 Tuesday, April 17, 2012 3:29 PM

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