(3-2) Condition: E12

Troubleshooting Serial Communication

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

2.Disconnect the cable from the terminal 3 on the Outdoor

unit terminal strip.

(Fig. 6)

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: E01

What is the latest self-diagnosis result ?

Condition: E12

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

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

unit terminal strip.

(Fig. 7)

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: E01

What is the latest self-diagnosis result ?

Condition: E12

Defect in the indoor unit

P.C. board

Outdoor Unit

1

2

3

4

5

6

 

 

 

 

 

 

 

 

Power

1 2 3

Indoor Unit

Fig. 6

Defect in the outdoor unit

P.C. board

Outdoor Unit

1

2

3

4

5

6

 

 

 

 

 

 

 

 

Power

1 2 3

Indoor Unit

Fig. 7

Defect in the inter-unit

cable

53

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Panasonic CU-KS24NKUA, CS-KS24NKU service manual Condition E12

CU-KS24NKUA, CS-KS24NKU, CU-KS24NKU specifications

The Panasonic CU-KS24NKUA, CU-KS24NKU, and CS-KS24NKU are a part of the company’s advanced air conditioning lineup, known for their efficient performance and user-friendly features. Designed to provide optimal cooling while ensuring energy efficiency, these models cater to both residential and commercial spaces, making them an ideal choice for various settings.

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