14.Protection Control

14.1Protection Control For All Operations

14.1.1Restart Control (Time Delay Safety Control)

šThe compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing OFF/ON button at remote control within this period.

šThis control is not applicable if the power supply is cut off and on again.

šThis phenomenon is to balance the pressure inside the refrigerant cycle.

14.1.230 Seconds Forced Operation

šOnce the air conditioner is turned on, the compressor will not stop within 30 seconds in a normal operation although the intake air temperature has reached the thermo-off temperature. However, force stop by pressing the OFF/ON button at the remote control is permitted or the Auto OFF/ON button at indoor unit.

šThe reason for the compressor to force operation for minimum 30 seconds is to allow the refrigerant oil run in a full cycle and return back to the outdoor unit.

14.1.3Total Running Current Control

šWhen the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor operation will be decreased.

šIf the running current does not exceed X value for 5 seconds, the frequency instructed will be increased.

šHowever, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for 3 minutes.

Model

E9NKUA

 

 

E12NKUA

Operation Mode

X (A)

 

Y (A)

X (A)

 

Y (A)

Cooling / Soft Dry (A)

3.89

 

15.00

6.55

 

15.00

Cooling / Soft Dry (B)

3.28

 

15.00

6.10

 

15.00

Heating

5.50

 

15.00

7.05

 

15.00

1. The first 30 minutes of cooling operation, (A) will be applied.

14.1.4IPM (Power Transistor) Prevention Control

šOverheating Prevention Control

o When the IPM temperature rises to 212°F, compressor operation will stop immediately. o Compressor operation restarts after 3 minutes the temperature decreases to 203°F.

o If this condition repeats continuously 4 times within 20 minutes, timer LED will be blinking (“F96” is indicated).

šDC Peak Current Control

o When electric current to IPM exceeds set value of 18.5A, the compressor will stop operate. Then, operation will restart after 3 minutes.

o If the set value exceeds again more than 30 seconds after the compressor starts, the operation will restart after 2 minutes.

o If the set value exceeds again within 30 seconds after the compressor starts, the operation will restart after 1 minute. If this condition repeats continuously for 7 times, all indoor and outdoor relays will be cut off, timer LED will be blinking (“F99” is indicated).

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Panasonic Indoor Unit Outdoor Unit CS-E9NKUAW CS-E12NKUAW CU-E9NKUA CU-E12NKUA service manual Protection Control

Indoor Unit Outdoor Unit CS-E9NKUAW CS-E12NKUAW CU-E9NKUA CU-E12NKUA specifications

Panasonic has been a pioneer in the heating and cooling industry, and its range of air conditioners, particularly the CS-E9NKUAW and CS-E12NKUAW indoor units, paired with the CU-E9NKUA and CU-E12NKUA outdoor units, exemplify the brand's commitment to energy efficiency, advanced technologies, and user-friendly features.

These models deliver exceptional cooling and heating performance, making them suitable for various climates. One of the prominent features of these units is their Inverter technology, which ensures that the compressor can adjust its speed according to the desired temperature. This not only provides accurate temperature control but also results in lower energy consumption compared to non-inverter systems. Users can enjoy a consistent and comfortable indoor environment while keeping their electricity bills in check.

A key characteristic of the CS-E9NKUAW and CS-E12NKUAW units is their whisper-quiet operation. The low noise levels make them ideal for bedrooms, living rooms, or office spaces, providing comfort without disturbance. With a decorative design, these indoor units seamlessly blend into any interior, enhancing the aesthetic appeal of the space.

These Panasonic models are also equipped with advanced air purification systems. Utilizing a combination of nanoe™ technology, the air conditioners effectively reduce airborne bacteria, viruses, and allergens, ensuring cleaner and healthier indoor air quality. The air purification feature is complemented by a powerful filter system that captures dust and particulate matter, further enhancing the overall air quality.

The remote control feature allows users to operate the units with ease. With programmable timers and personalized settings, optimal comfort and convenience are just a click away. Additionally, the units are designed to be eco-friendly, adhering to strict environmental regulations and standards, thus promoting sustainability.

For installation, the outdoor units CU-E9NKUA and CU-E12NKUA are engineered to operate efficiently and quietly, accommodating various mounting options for flexible installation. The robust design enhances durability while minimizing maintenance needs, ensuring long-term reliability.

In summary, the Panasonic CS-E9NKUAW, CS-E12NKUAW indoor units, along with their CU-E9NKUA and CU-E12NKUA outdoor counterparts, embody a perfect blend of cutting-edge technology, user-centric features, and energy efficiency. They represent an excellent choice for consumers seeking comfort, convenience, and quality in their heating and cooling solutions.