( Continued from the previous page A. )

( Continued from the previous page B. )

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

 

 

 

Yes

 

 

 

Is the voltage of about DC22V to

 

 

 

 

 

 

24V given between the terminals

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 and 3 on the indoor unit terminal strip

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Serial Communication Line) ?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Fig. 2)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

Defect or connection error

 

 

 

 

 

Defect in the indoor unit

 

in the inter-unit cable

 

 

 

 

 

 

 

P.C. board

 

 

 

 

 

 

 

 

 

 

 

 

Outdoor Unit

1. Turn OFF the power and wait until the power lamp (LED)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

of the outdoor unit controller is turned OFF.

 

 

 

 

1

2

 

3

4

5

6

 

2. Short-circuit between the terminals 2 and 3 on the outdoor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

unit terminal strip.

(Fig. 3)

 

 

 

 

 

 

 

 

 

 

Power

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

 

3

 

 

 

 

 

 

1.Turn ON the power and operate the system using the remote controller or the operation button on the indoor unit.

2.Perform the self-diagnosis five seconds after the operation start.

What is the latest self-diagnosis result ?

Condition: E01

Condition: E12

Indoor Unit

Fig. 3

Defect in the outdoor unit

P.C. board.

1.Turn off the power and wait until the power lamp (LED) of the outdoor unit controller is turned OFF.

2.Remove the short-circuit between the terminals 2 and 3 on the outdoor unit terminal strip.

3.Disconnect the cable from the terminal 3 on the indoor unit

terminal strip.(Fig. 4)

Short-circuit between the terminals 2 and 3 on the indoor unit

terminal board.

(Fig. 5)

 

 

 

 

 

 

 

Outdoor Unit

 

 

 

 

 

 

 

Outdoor Unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

4

5

6

 

1

2

3

 

4

5

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Power

 

 

 

 

 

 

 

 

Power

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor Unit

 

 

 

 

 

 

1

2

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor Unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. 4

 

 

 

 

 

 

 

 

 

 

 

Fig. 5

 

 

 

 

 

1.Turn ON the power and operate the system using the remote controller or the operation button on the indoor unit.

2.Perform the self-diagnosis five seconds after the operation start.

Condition: E12

What is the latest self-diagnosis result ?Defect or connection error in the inter-unit cable

Condition: E01

Defect in the indoor unit

P.C. board

55

Page 54 Page 56
Page 55
Image 55
Panasonic CS-KS18B4UW & CZ-18BT1U, CU-KS18NKUA, CU-KS12NK1A, CS-KS12NB41 & CZ-18BT1U service manual From the previous page a
Page 54 Page 56

CS-KS18B4UW & CZ-18BT1U, CS-KS12NB41 & CZ-18BT1U, CU-KS12NK1A, CU-KS18NKUA specifications

Panasonic has long been a reputable name in the HVAC (Heating, Ventilation, and Air Conditioning) industry, continuously innovating to provide efficient and sustainable solutions. Among their latest offerings, the CU-KS18NKUA, CS-KS18B4UW, CU-KS12NK1A, and CS-KS12NB41 split systems stand out for their advanced features and technologies designed to enhance user comfort while minimizing environmental impact.

The CU-KS18NKUA and CS-KS18B4UW units are high-capacity air conditioning systems that cater to larger spaces. One of their defining features is the inverter technology, which allows the compressor to adjust its speed according to the demand, leading to significant energy savings. The units operate quietly, contributing to a peaceful environment whether in homes or offices. Furthermore, the super-efficient energy consumption aligns with modern sustainability practices, reducing users' carbon footprints.

The advanced R32 refrigerant used in these systems is another highlight. R32 is known for its lower global warming potential compared to traditional refrigerants, making it an eco-friendly choice. These models are equipped with a powerful cooling capability while maintaining a compact and sleek design, seamlessly integrating into various interior styles.

In terms of indoor air quality, both models incorporate a multi-stage filtration system. This system effectively filters out dust, allergens, and harmful particles, ensuring cleaner indoor air. Additionally, the nanoe-G technology helps in deodorizing and purifying the air, enhancing the overall comfort and health of the environment.

The CU-KS12NK1A and CS-KS12NB41 models cater to smaller rooms but do not compromise on performance. They share similar inverter technology and energy-efficient characteristics as their larger counterparts, ensuring that users can enjoy a comfortable climate in a smaller footprint.

With an emphasis on user-friendly design, all these models come with intuitive remote controls, allowing for easy temperature adjustments and scheduling. Some units even offer Wi-Fi connectivity for remote access and monitoring via smartphone apps.

The CZ-18BT1U, often paired with these outdoor units, serves as an innovative air conditioning solution that supports energy efficiency and provides reliable cooling performance.

Overall, the Panasonic CU-KS and CS series units are ideal for consumers looking for modern, efficient, and environmentally friendly air conditioning solutions. Their combination of advanced technologies, user-centric design, and eco-conscious operation set them apart in the competitive HVAC market.
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