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Mitsubishi Electric PAC-YT51CRB Operation Manual

Multi control system and mr.slim air conditioners
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CITY MULTI Control System and Mr.SLIM Air Conditioners
SIMPLE MA CONTROLLER Operation Manual

Safety Precautions

• For your safety, first be sure to read "Safety Precautions" described below thoroughly and use the remote controller correctly.
• The precautions described here contain important safety information. Always observe them.
• After reading this manual, keep it and the installation manual in a place where the final user can see them whenever he or she
wants to.
When the user changes, forward this manual and the installation manual to the final user.
Symbols and Terms
WARNING
This symbol denotes what could lead to serious injury or death if you misuse the PAC-YT51CRB.
This symbol denotes what could lead to a personal injury or damage to your property if you misuse the
CAUTION
PAC-YT51CRB.
• Ask your dealer or technical representative to install the
unit.
Any deficiency caused by your own installation may result in
an electric shock or fire.
• Securely install in a place which can withstand the weight
of the controller.
If it is not enough, the controller may drop and cause an in-
jury.
• Make sure that the controller is connected to a rated
power supply.
If the controller is not connected to a rated power supply, it
may cause a fire or damage to the controller.
• Stop the operation if any malfunction occurs.
Contact the your dealer or technical representative immedi-
ate. If the controller continues to operate after a malfunction
occurs, this may cause damage, electric shock or fire. If mal-
• Do not install in any place exposed to flammable gas
leakage.
Flammable gases accumulated around the body of PAC-
YT51CRB may cause an explosion.
• Do not wash with water.
Doing so may cause malfunction.
• Do not touch any control button with your wet hands.
Doing so may cause malfunction.
• Do not use the controller for special applications.
This product is designed for use with the CITY MULTI CON-
TROL SYSTEM and Mr. SLIM Air Conditioners. Do not use
the system for other air condition management operation or
applications. It may cause malfunctions.
• Do not apply insecticide or flammable sprays to the con-
troller.
Do not place flammable spray near the controller and make
sure it does not blow directly on the controller as this may
cause in fire.
• Do not clean the unit using benzene, thinner or other
chemicals.
It may cause discoloration or other damage. If the unit should
become particularly dirty, apply a mild cleaner that has been
diluted with water to a soft cloth and wipe the unit clean. Be
sure to wipe away any residual moisture with a dry cloth.
Model name: PAC-YT51CRB
WARNING
function occurs (burning smell, etc.) stop the operation and
turn off the power supply.
• Ensure that installation work is done correctly following
this installation manual.
Any deficiency caused by installation may result in an elec-
tric shock or fire.
• To dispose of this product, consult your dealer.
• Never modify or repair the PAC-YT51CRB by yourself.
Any deficiency caused by your repair may result in an elec-
tric shock or fire.
Consult with your dealer about repairs.
• Stop the operation immediately and notify the your dealer
if an error code is displayed or malfunction occurs.
Fire or damage may cause it the controller is operated in this
condition.
CAUTION
• Do not use in any special environment.
Using in any place exposed to oil (including machine oil),
steam and sulfuric gas may deteriorate the performance sig-
nificantly or give damage to the component parts.
• Do not press any control button using a sharp object.
It may cause damage and trouble.
• Operate the controller within the specified temperature
range.
Observe the specified temperature range when operating the
controller. If the controller is used outside the specified tem-
perature range, it may cause serious damage. Be sure to
check the operation temperature range in the operation
manual.
• Do not stretch or twist the remote controller wire (trans-
mission line).
It may cause malfunction.
• Do not remove the remote controller cover.
Removing the remote controller cover and touching the inter-
nal printed circuit boards or other parts will cause trouble.

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Table of Contents
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  Summary of Contents for Mitsubishi Electric PAC-YT51CRB

  • Page 1: Safety Precautions

    Symbols and Terms WARNING This symbol denotes what could lead to serious injury or death if you misuse the PAC-YT51CRB. This symbol denotes what could lead to a personal injury or damage to your property if you misuse the CAUTION PAC-YT51CRB.
  • Page 2: Display Overview

    A [CENTRAL] Display Displayed during remote operation prohibited by an optional centralized control unit, etc. B Temperature Display Displays the temperature set with the [TEMP.] buttons. Set temperature can be displayed in either Centigrade or Fahrenheit. (For details, refer to the Operation Manual of the indoor unit.) C Operation Modes Displays the operation status.
  • Page 3: Temperature Range Setting

    Note: If these buttons are pressed while trying to change the fan speed of an indoor unit which is not equipped with a fan speed adjustment setting, the fan speed display flashes and the unit’s fan speed does not change. K Operation Mode Selection Button This button is used to select the operation mode.
  • Page 4: Auto Mode Skip Setting

    • When the temperature beyond the temperature setting range is set, the set temperature display flashes. * The temperature range can be set from the centralized remote controller that has the function of temperature range setting via this Simple MA Controller connected with the indoor unit that has the function of temperature range setting.
  • Page 5: Display And Controls Overview

    CENTRAL TEMP. CHECK ON/OFF TEMP.
  • Page 6 TEMP. TEMP. TEMP. TEMP.