(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

36

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Panasonic CU-4KE31NBU, CS-MKE9NB4U, CU-4KE24NBU, CU-3KE19NBU, CS-MKE12NB4U, CS-KE18NB4UW, CZ-18BT1U service manual Condition E12

CZ-18BT1U, CS-KE18NB4UW, CS-MKE12NB4U, CU-3KE19NBU, CU-4KE24NBU specifications

The Panasonic CS-KE18NB4UW and CU-KE12NK1, along with the CS-KE12NB41, CZ-18BT1U, and CU-KE18NKU, represent a suite of advanced air conditioning solutions built with cutting-edge technologies designed to provide optimal comfort, energy efficiency, and air quality in various settings.

One of the standout features of this lineup is the inverter technology. Inverter air conditioners adjust the compressor speed to maintain the desired temperature efficiently. This leads to significant energy savings compared to traditional air conditioners, which tend to frequently cycle on and off, consuming more power. By continuously regulating the temperature, the Panasonic units not only save electricity but also prolong the lifespan of the compressor.

Another noteworthy characteristic is the nanoe™ technology integrated into some of these models. Nanoe™ technology uses hydroxyl radicals to purify the air, minimizing harmful bacteria and allergens. This makes the Panasonic units particularly suitable for users with allergies or respiratory issues, providing a cleaner and healthier indoor environment.

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Furthermore, the CS-KE18NB4UW and CU-KE12NK1 offer a range of powerful cooling and heating capacities, making them versatile solutions for various climate conditions. The cold climate performance ensures consistent heating in colder regions, while the robust cooling capabilities make them perfect for hot summer months.

The user-friendly features include a smart remote control system, allowing users to adjust settings with ease from a distance. Some models are equipped with Wi-Fi capability, enabling integration with smart home systems for enhanced control and programmability.

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