6. Defrost control

QIn heating operation, defrost operation is performed when TE sensor temperature satisfies any condition in A zone to D zone.

RThe defrost operation is immediately finished if TE sensor temperature has become 12°C or more, or it also is finished when condition of 7°C < TE < 12°C has continued for 1 minute. The defrost operation is also finished when defrost operation has continued for 10 minutes even if TE sensor temperature has become 7°C or lower.

SAfter defrost operation has finished, the compressor and the outdoor fan start heating operation after stopped for approx. 50 seconds.

Start of heating operation

 

0

10

15

c

b

a

d [min.]

TE [ºC]

 

 

 

 

 

 

 

 

 

 

 

–4

(–5)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A zone

–6 (–10)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–10 (–13)

 

 

 

 

 

 

 

B zone

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–25 (–18)

 

 

*

 

 

 

 

 

 

 

D zone

 

 

 

 

 

 

C zone

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Numerals enclosed with parentheses represent numeral values of SM1102 and SM1402.

* The minimum TE value between 10 and 15 minutes after heating operation has started is stored in memory as TE0.

A zone

Defrost operation is performed in this zone when TE0-TE > 3 continued for T seconds.

B zone

Defrost operation is performed in this zone when TE0-TE > 3 continued for T seconds.

C zone

Defrost operation is performed when this zone continued for T seconds.

 

 

 

 

D zone

Defrost operation is performed when this zone continued for T seconds.

 

 

 

 

 

 

 

 

 

SM562, SM802

SM1102, SM1402

 

 

 

 

 

a

35

50

 

 

 

 

 

b

29

35

 

 

 

 

 

c

29

30

 

 

 

 

 

d

90

90

 

 

 

 

 

T

20

20

 

 

 

 

 

– 78 –

Page 77 Page 79
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Toshiba RAV-SM802UT-E, RAV-SM1102UT-E, RAV-SM1402UT-E service manual Defrost control, Start of heating operation, Te ºc, Zone
Page 77 Page 79

RAV-SM562UT-E, RAV-SM802UT-E, RAV-SM1402UT-E, RAV-SM1102UT-E specifications

Toshiba has established itself as a leading name in the field of heating, ventilation, and air conditioning (HVAC) systems. Among their extensive range, the RAV-SM802UT-E, RAV-SM1102UT-E, RAV-SM1402UT-E, and RAV-SM562UT-E stand out for their performance, efficiency, and innovative technology.

The Toshiba RAV-SM802UT-E is designed for medium-sized commercial spaces, providing a cooling capacity of 8 kW. It employs advanced inverter technology, which enables it to adjust the compressor speed based on the load demand. This adaptability leads to a significant decrease in energy consumption, making the unit both eco-friendly and cost-effective. The unit also features a high-efficiency rotary compressor and a wide operating temperature range, ensuring reliable performance even in extreme weather conditions.

Next in line, the RAV-SM1102UT-E offers an impressive 11 kW cooling capacity, making it suitable for larger commercial applications. This model incorporates Toshiba’s cutting-edge Superlink technology, which allows multiple indoor units to be connected to a single outdoor unit, providing flexible installation options. The RAV-SM1102UT-E is also equipped with a sleek and modern design that blends seamlessly with any architecture while ensuring low noise levels during operation, enhancing comfort in the workspace.

The RAV-SM1402UT-E is a powerhouse among the series, boasting a cooling capacity of 14 kW. It is built with an enhanced refrigerant management system that minimizes refrigerant leaks and optimizes thermal efficiency. This model supports smart building management systems, making it an ideal choice for tech-savvy businesses looking to integrate their HVAC systems into a broader energy management framework. Furthermore, it maintains high EU energy efficiency ratings, verifying Toshiba's commitment to environmental sustainability.

Lastly, the RAV-SM562UT-E, with its 5.6 kW cooling capacity, is tailored for smaller commercial environments and residential use. It retains all the core technologies featured in its counterparts, including inverter technology and a high-efficiency compressor, ensuring comfort without excessive energy usage. This model also includes a user-friendly remote control and programmable timer functions, allowing for customized comfort settings and enhanced convenience.

In summary, the Toshiba RAV-SM series represents the pinnacle of HVAC innovation, blending energy efficiency with advanced technology. Each model caters to specific needs, from the compact RAV-SM562UT-E to the robust RAV-SM1402UT-E, ensuring that every commercial and residential space can achieve optimal climate control.
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