To Next PageTo Next PageWhat to do if the OFF timer indicator shows a check code and indoor unit number on my Toshiba MMU-UP0121HP-E?
If the OFF timer indicator on your Toshiba Air Conditioner is alternately displaying a check code and the indoor unit number, check the troubleshooting history by pressing the OFF timer button for more than 10 seconds.
General| Brand | Toshiba |
|---|---|
| Model | MMU-UP0121HP-E |
| Category | Air Conditioner |
| Language | English |
Instructs to confirm the presence and position of warning labels on the main unit for safe operation.
Defines the qualifications and knowledge required for air conditioner installation and service personnel.
Lists required protective gear for various tasks and explains safety indications and marks.
Provides detailed technical specifications for 4-way cassette indoor units, including capacity, sound levels, and weight.
Lists specifications for ceiling type indoor units, covering performance, dimensions, and electrical characteristics.
Outlines specifications for concealed duct standard units, including performance data and physical dimensions.
Provides technical specifications for high static pressure concealed duct units, detailing performance and physical attributes.
Details specifications for concealed duct units with fresh air intake, covering performance and dimensions.
Lists specifications for console type indoor units, including performance metrics and physical dimensions.
Provides technical specifications for high wall type indoor units, covering performance, dimensions, and electrical data.
Presents external views and dimensions for 4-way cassette indoor units, illustrating installation requirements.
Shows external views and dimensions for ceiling type indoor units, detailing installation clearances and component locations.
Provides external views and dimensions for concealed duct standard units, essential for installation planning.
Illustrates external views and dimensions for high static pressure concealed duct units, crucial for installation.
Displays external views and dimensions for concealed duct units with fresh air intake, vital for installation.
Presents external views and dimensions for console type indoor units, detailing installation and mounting.
Shows external views and dimensions for high wall type indoor units, important for installation and access.
Illustrates the wiring diagram for 4-way cassette type indoor units, detailing electrical connections.
Provides the wiring diagram for ceiling type indoor units, showing electrical connections and component layout.
Details the wiring diagram for concealed duct standard type units, essential for troubleshooting.
Presents the wiring diagram for high static pressure concealed duct units, crucial for diagnosis.
Shows the wiring diagram for concealed duct units with fresh air intake, vital for understanding connections.
Illustrates the wiring diagram for console type indoor units, detailing electrical connections.
Provides the wiring diagram for high wall type indoor units, essential for electrical configurations.
Lists parts rating for various indoor unit types, including fan motors, sensors, and PC boards.
Explains the function of key components in the indoor unit's refrigerant cycle, including sensors and valves.
Outlines control specifications, detailing operation modes, fan speed selection, and temperature settings.
Details communication types (TU2C-Link, TCC-Link) and lists compatible model names and controllers.
Explains unit combinations and maximum connectable indoor units for different communication types, crucial for system design.
Shows the block diagram for the MCC-1643 indoor controller, illustrating connections for wired remote controllers.
Provides the block diagram for the MCC-1720 indoor controller, detailing connections for remote controllers.
Illustrates the block diagram for the MCC-1696 indoor controller, showing connections for various control inputs.
Details the layout and components of the indoor unit's print circuit boards for servicing purposes.
Describes the procedure for performing a test run to check cooling/heating operation and ensure proper function.
Explains how to set indoor unit function codes (DN codes) using a wired remote controller for customization.
Details applied control methods, including ON/OFF control and ventilation fan control from the remote controller.
Provides an overview of troubleshooting, applicable models, required tools, and normal behaviors.
Explains how to identify trouble sites using check codes displayed on remote controllers and outdoor units.
Guides users on troubleshooting based on check codes and trouble history displayed on the remote controller.
Lists check codes, their detection conditions, and potential locations for checking to diagnose issues.
Provides step-by-step diagnostic procedures for indoor unit check codes, aiding in problem resolution.
Details the resistance characteristics of indoor unit sensors (TA, TC1, TC2, TCJ) across temperature ranges for troubleshooting.
Outlines recommended maintenance procedures for indoor and outdoor units, including cleaning and inspection schedules.
Provides procedures for replacing the indoor unit's P.C. board, including EEPROM data handling.
Details detachment and attachment procedures for 4-way cassette indoor unit components like grilles and covers.
Describes detachment and attachment procedures for ceiling type indoor unit components, such as air intake grilles and electric parts boxes.
Outlines detachment and attachment procedures for concealed duct standard units, focusing on air filters and panels.
Provides detachment and attachment procedures for high static pressure concealed duct units, covering panels and PC boards.
Details detachment and attachment procedures for concealed duct units with fresh air intake, including panels and PC boards.
Explains detachment and attachment procedures for console type indoor units, focusing on front panels and electric parts assemblies.
Describes detachment and attachment procedures for high wall type indoor units, covering air inlet grilles and air filters.
Provides an exploded view and parts list for 4-way cassette indoor units, identifying components by number.
Shows an exploded view and parts list for ceiling type indoor units, detailing component identification.
Presents an exploded view and parts list for concealed duct standard units, aiding in part identification.
Displays an exploded view and parts list for high static pressure concealed duct units, crucial for ordering.
Provides an exploded view and parts list for concealed duct units with fresh air intake, facilitating part identification.
Shows an exploded view and parts list for console type indoor units, helping to identify and order parts.
Presents an exploded view and parts list for high wall type indoor units, essential for component identification.
Provides details about the manufacturer, TOSHIBA CARRIER (THAILAND) CO., LTD., and their European counterpart.
States compliance with the Machinery Directive (2006/42/EC) and harmonized standards like EN 378-2.
