2. Processes and functions

2-1 Room Temperature Control

The unit adjusts room temperature by turning the outdoor unit’s compressor ON and OFF. This process is controlled by the thermostat located in the remote control unit.

The figures on this and the next pages show how each part of the system performs when the room temperature changes and the thermostat activates the compressor to start (thermo ON) or stop (thermo OFF). Fig. 1 shows about the cooling cycle, and Fig. 2 shows about the heating cycle.

(A) Cooling

BODY SENSOR

T+2 °F

SET TEMP. T °F

T–2 °F

COMPRESSOR

21

OUTDOOR FAN (H OR M)

 

(THERMO. OFF)

THERMO. OFF

ROOM TEMP.

(THERMO. ON)

THERMO. ON

MORE THAN

3 MINUTES

5 MINUTES

MORE THAN

MORE THAN

5 MINUTES

3 MINUTES

5 MINUTES

ON

OFF

ON

OFF

ON

ON

OFF

ON

OFF

ON

INDOOR FAN

SET SPEED

1. Refer to 2-4 Outdoor Fan Speed Control

1133_THS_I

Fig. 1

Chart Summary and Explanations

Once the compressor starts, it keeps running for 5 minutes.

Once the compressor stops, it will not start running again for 3 minutes.

If you change the operation mode (HEAT, COOL or FAN) during the heating cycle, the control circuit stops the compressor for 3 minutes.

For 5 minutes after the compressor is first turned on, and for 3 minutes after it is turned off, the compressor is not controlled by the room sensor.

Thermo ON: When room temperature rises 2 F (4˚F when set on body sensor) above the set temperature T˚, (T˚+2˚F or T˚+4˚F when set on body sensor):

Compressor ON

Thermo OFF: When the room temperature is –2˚F below the set temperature T˚:

Compressor OFF

2-2

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Panasonic R410A service manual Processes and functions Room Temperature Control, Cooling, Chart Summary and Explanations

R410A specifications

Panasonic R410A is a refrigerant that has gained significant popularity in the air conditioning and refrigeration industry due to its favorable environmental properties and performance characteristics. Specifically designed to replace the harmful R22 refrigerant, which is being phased out due to its ozone-depleting potential, R410A offers a more eco-friendly alternative without compromising on efficiency or power.

One of the main features of R410A is its high energy efficiency. It operates at a higher pressure than R22, resulting in better heat transfer capabilities. This increased efficiency translates to lower energy consumption, making units using R410A more cost-effective in the long run. Additionally, R410A is known for its ability to provide excellent cooling performance even in high-temperature environments, making it suitable for a variety of applications, from residential air conditioning systems to commercial refrigeration units.

In terms of composition, R410A is a blend of two hydrofluorocarbons (HFCs), namely R32 and R125. This combination not only minimizes ozone depletion potential (ODP) but also reduces global warming potential (GWP) compared to older refrigerants. Panasonic has emphasized the importance of innovative technologies in its products, and R410A aligns perfectly with the company's commitment to developing sustainable solutions.

Panasonic also integrates advanced technologies to optimize the performance of R410A systems. For example, variable speed compressors, known as inverter technology, enhance system efficiency by adjusting the compressor's speed according to the cooling demand. This ensures that energy is only consumed when needed, further reducing operational costs.

Furthermore, R410A has a wide range of applications, including air conditioning systems, heat pumps, and chillers. Its versatility makes it a popular choice among manufacturers and consumers alike. The refrigerant is also compatible with existing R22 equipment, although specific retrofit procedures must be followed to ensure peak performance and reliability.

In conclusion, Panasonic R410A stands out as an innovative refrigerant choice in the HVAC industry, offering a combination of energy efficiency, environmentally friendly properties, and advanced technologies. As regulatory frameworks continue to tighten on greenhouse gas emissions, R410A and similar refrigerants are expected to play a crucial role in shaping a more sustainable future for air conditioning and refrigeration. Its high performance and lower environmental impact solidify its position as a leading refrigerant in contemporary cooling solutions.