Contents

NOTE

A direct current motor is adopted for indoor fan motor in the Concealed Duct Standard Type air conditioner. Caused from its characteristics, a current limit works on the direct current motor. When replacing the high-performance filter or when opening the service board, be sure to stop the fan. If an above action is executed during the fan operation, the protective control works to stop the unit operation, and the check code “P12” may be issued. However it is not a trouble. When the desired operation has finished, be sure to reset the system to clear “P12” error code using the leak breaker of the indoor unit. Then push the operation stop button of the remote controller to return to the usual operation.

ORIGINAL INSTRUCTION			4
WARNING INDICATIONS ON THE AIR CONDITIONER UNIT6
PRECAUTION FOR SAFETY			7
NEW REFRIGERANT (R410A)			13
	1. Safety Caution Concerned to New Refrigerant		13
	2. Cautions on Installation/Service		13
	3. Pipe Materials		13
1.	AIR DUCTING WORK		15
	1-1.	Static Pressure Characteristics	15
2.	CONSTRUCTION VIEWS (EXTERNAL VIEWS)		17
	2-1.	Compact 4-way Cassette Type	17
	2-2.	Concealed Duct Type	18
	2-3.	Ceiling Type	19
3.	WIRING DIAGRAM		20
	3-1.	Indoor Unit	20
4.	SPECIFICATIONS OF ELECTRICAL PARTS		23
	4-1.	Compact 4-way Cassette Type	23
	4-2.	Concealed Duct Type	23
	4-3.	Ceiling Type	23
5.	CONTROL BLOCK DIAGRAM		24
	5-1. Indoor Controller Block Diagram		24
	5-2.	Control Specifications	27
	5-3.	Indoor Print Circuit Board	40

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CONCEALED DUCK TYPE, CEILING TYPE specifications

Toshiba has long been a name associated with innovative and efficient HVAC solutions, and their Concealed Duck Type, Ceiling Type air conditioning units exemplify this legacy. These units are designed to provide exceptional comfort while seamlessly integrating into a variety of interior spaces.

One of the main features of the Toshiba Concealed Duck Type, Ceiling Type system is its discreet installation method. Unlike traditional wall-mounted units, this system is installed within the ceiling, allowing for an unobtrusive appearance. The result is a clean and modern aesthetic, ideal for residential and commercial settings where design is a priority. With only the supply and return grilles visible, the units maintain the integrity of the interior decor.

The technology employed in Toshiba's air conditioning systems revolves around energy efficiency and user comfort. The units are equipped with inverter technology, which allows for precise temperature control and reduces energy consumption. The inverter adjusts the compressor speed to meet the cooling or heating demand, ensuring not only optimal comfort but also reduced operational costs.

Another significant characteristic of the Toshiba Concealed Duck Type units is their quiet operation. Designed with sound-dampening features, they operate at low noise levels, making them suitable for environments where noise can be a concern, such as offices, hotels, or residential spaces.

Toshiba's advanced air filtration system further enhances indoor air quality. Integrated filters capture dust and allergens, creating a healthier indoor environment. This is particularly beneficial for individuals with allergies or respiratory concerns, as the system works to reduce airborne pollutants.

The units also offer flexible control options. With the availability of remote control or smart home integration, users can easily adjust settings to suit their preferences. Additionally, some models come with programmable timers, allowing for energy savings when the space is unoccupied.

Furthermore, these units are designed for reliability and ease of maintenance. Toshiba emphasizes durability in their construction, and the concealed installation not only enhances aesthetics but also protects the unit from potential damage. Routine maintenance can be performed efficiently, ensuring longevity and sustained performance.

In summary, Toshiba's Concealed Duck Type, Ceiling Type air conditioning units deliver a blend of innovative technology, energy efficiency, and contemporary design. With features like inverter technology, quiet operation, advanced air filtration, and flexible control options, they offer a compelling choice for those seeking comfort without compromising style. These units stand as a testament to Toshiba's commitment to quality and customer satisfaction in the HVAC industry.

Toshiba CEILING TYPE, CONCEALED DUCK TYPE service manual Contents

Models: CONCEALED DUCK TYPE CEILING TYPE

CONCEALED DUCK TYPE, CEILING TYPE specifications