Troubleshooting for Each Check Code, 121

14-4. Troubleshooting for Each Check Code

[1A error]

Are connections of CN301 and
	CN300 of CDB correct?
		YES
Does the fan rotate without trouble					NO
when handling the fan with hands under condition
of removing CN301 and CN300 from CDB?
		YES
The status that the resistance values
between leads below are 50 to 80
for 40W motor (ICF-140-43) and 25 to 55					NO
for 60W motor (ICF-140-63-1) is normal.					NO
for 60W motor (ICF-140-63-1) is normal.
Between	1	(Red lead) and 2	(White lead)
Between	2	(White lead) and	3	(Black lead)
Between	3	(Black lead) and	1	(Red lead)
of motor winding of connector (CN301)
		YES
	The status that there is				NO
5k to 20k		resistance values between			NO
1 (Yellow lead) and 4 (Pink lead)
of motor position detection of connector
(CN300, CN302) is normal.
		YES

CN301

CN300

•For RAV-SM560AT-E, CN300 changes to CN301, and CN301 to CN300, respectively.

Normal fan motor

(CDB error)

NOTE :

Defective fan motor

However, GND circuit error inside of the motor is rarely detected even if the above check is carried out. When the circuit does not become normal even if P.C. board has been replaced, replace outdoor fan motor.

	RAV-SM560AT-E RAV-SM800AT-E
Objective P.C. board	Control P.C. board	CDB P.C. board
Fan motor winding	CN300	CN301
Motor position detection	CN301	CN300

– 121 –

RAV-SM800BT-E, RAV-SM560BT-E, RAV-SM560AT-E, RAV-SM560UT-E, RAV-SM800UT-E specifications

Toshiba offers a range of innovative air conditioning units designed for optimal performance and efficiency, including the RAV-SM800UT-E, RAV-SM560UT-E, RAV-SM800AT-E, RAV-SM560BT-E, and RAV-SM800BT-E models. Each of these units is part of Toshiba's commitment to quality air conditioning solutions that cater to both residential and commercial spaces.

The RAV-SM800UT-E and RAV-SM800AT-E models are notable for their impressive cooling and heating capacities, making them ideal for larger spaces. They feature advanced inverter technology, which adjusts the compressor's speed to maintain a consistent temperature while reducing energy consumption. This not only ensures comfort but also translates into significant energy savings over time.

In terms of design, these models benefit from Toshiba's sleek and modern aesthetics, allowing them to blend seamlessly into various interior styles. The noise levels are remarkably low, thanks to Toshiba's engineering, making these units suitable for use in environments where quiet operation is paramount, such as offices and bedrooms.

The RAV-SM560UT-E and RAV-SM560BT-E models offer similar performance but are tailored for smaller spaces without compromising on efficiency. They include features such as multilayer air filtration systems that effectively remove dust, allergens, and other pollutants, ensuring a healthier indoor air environment. Furthermore, they come equipped with intelligent control options, allowing users to operate the units remotely via smartphone applications.

Another standout characteristic of the RAV-SM800BT-E is its ability to provide both cooling and heating, making it a versatile option throughout the year. These units utilize R32 refrigerant, which has a lower global warming potential compared to traditional refrigerants, aligning with Toshiba's commitment to sustainability.

Each of these models is designed for easy installation and maintenance, featuring a user-friendly interface and robust build quality. The advanced diagnostics feature allows for timely troubleshooting and maintenance, ensuring the longevity of the units.

In summary, Toshiba's RAV-SM800UT-E, RAV-SM560UT-E, RAV-SM800AT-E, RAV-SM560BT-E, and RAV-SM800BT-E models represent a blend of innovative technology, user-centric design, and environmental responsibility. These units not only deliver exceptional climate control but also contribute to reducing energy costs and improving indoor air quality, making them a smart choice for a wide range of applications.

Toshiba RAV-SM800UT-E, RAV-SM800AT-E Troubleshooting for Each Check Code, 121, 1A error

Models: RAV-SM800BT-E RAV-SM560BT-E RAV-SM560AT-E RAV-SM560UT-E RAV-SM800UT-E RAV-SM800AT-E