1. Specifications

7-9. Electrical Wiring

Signal receiving unit

Indoor PCB

WL 12

 

 

 

Operating controller W2

 

 

W3 Indicator section

 

 

 

 

CN1

CN2

(0.7 ft.)

 

(4.3 ft.)

CN1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

W1 (4.3 ft.)

 

 

 

 

 

BLU

 

 

 

 

BLU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YEL

 

 

 

 

YEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHT

 

 

 

 

 

 

 

 

 

PNK

 

 

 

 

PNK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

RED

 

 

 

 

RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GRY

 

 

 

 

GRY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Relay connector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. 1-93

Connection method

(1)Connect W1 to the indoor PCB WL connector.

(2)Connect W3 from the indicator section with W2 from the operating controller using the relay connector.

 

7-10. Test Run Switch

 

The test run switch is located in the operating control unit.

 

 

See the Installation Instractions attached to the outdoor unit.

1

7-10-1. How to use the test run setting (U1, T1 Types)

 

(1)

Set DIP switch [DS] No. 1 on the wireless receiver

 

 

unit PCB from OFF to the ON position.

 

(2)

Press the ON/OFF operation button on the

 

 

wireless remote controller.

All OFF( ) for initial settings.

(3)Make a test run using the air conditioner in COOL or HEAT mode.

(4)During the test run, each of the 3 indicator lamps on the indoor unit fl ash.

1 2 3 4

 

ADR

1.TEST RUN

 

 

 

 

2.PCB CHK.

 

1 2 3

 

3.RCU: MAIN

 

 

RCU: SUB

 

 

 

 

 

 

4.NORMAL

 

4 5 6

 

ALL •

 

 

(5)During the test run, the air conditioner runs continuously and the thermostat does not control the system.

(6)After the test run, be sure to reset DIP switch No. 1 back to the OFF position and check that no indicator lamps are blinking.

(This receiver includes a 60-minute automatic OFF timer function in order to prevent continuous test run.)

NOTE

DIP switch

Address

Flap

ON/OFF

No. 1

switch

button

operation

 

 

 

button

Fig. 1-94

In case of 4-way Cassette type, test run operation is not possible without the ceiling panel installation.

To protect the air conditioner from overloading, the outdoor unit will not start running for 3 minutes after power is applied or the air conditioner is turned off and then back on.

When the air conditioner fails to start the test run, 1 or more of the 3 alarm indicator lamps on the indoor unit will flash (See next section).

When the DIP switch is set to “TEST – ON,” temperature control from the wireless remote controller is disabled. Do not use this setting at any time other than for the test run. Doing so will place an excessive load on the system.

To avoid placing an excessive load on the equipment, use this function only when conducting the test run.

1-104

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Panasonic R410A service manual Electrical Wiring, Test Run Switch, How to use the test run setting U1, T1 Types
Page 109 Page 111

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.
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