8. TROUBLESHOOTING (BEFORE CALLING FOR SERVICE)

8-1. Precautions before Performing Inspection or Repair

After checking the self-diagnostics monitor, turn the power OFF before starting inspection or repair.

High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). They retain an electrical charge (charging voltage DC 310V) even after the power is turned OFF, and some time is required for the charge to dissipate. Be careful not to touch any electrified parts before the controller LED (red) turns OFF.

If the outdoor controller is normal, approximately 30 seconds will be required for the charge to dissipate. However, allow at least 5 minutes for the charge to dissipate if there is thought to be any trouble with the outdoor controller.

8-2. Method of Self-Diagnostics

Follow the procedure below to perform detailed trouble diagnostics.

NOTE

1:If the operation lamp blinks every 0.5 seconds immediately when the power is turned ON, there is an external ROM (OTP data) failure on the indoor circuit board, or a ROM socket insertion problem, or the ROM has not been installed.

2:The failure mode is stored in memory even when the power is not ON. Follow the procedure below to perform diagnostics.

PROCEDURE

After turning on power to the air conditioner, use the remote controller and follow the steps below to execute self-diagnostics.

Step 1: Press and hold the remote controller QUIET button and 1 HR TIMER button. At the same time, press the ACL (reset) button. Use a pointed object such as the tip of a pen to press the ACL button. When this has been done, "oP-1" (test run) appears, blinking, in the remote controller clock display area.

Step 2: Next, press the 1 HR TIMER button once to change the display from "oP-1" to "oP-3" (self-diagnostics). (The display continues to blink.)

Step 3: Finally press the ON/OFF button to engage self-diagnostics mode.

•The self-diagnostics function utilizes the 3 indicator lamps on the main unit, in combinations of ON lamps, blinking lamps, and OFF lamps, to report the existence of sensor trouble or a protective operation. (The lamps blink or remain ON for 5 seconds, then turn OFF for 2 seconds.) Self-diagnostics is completed when the buzzer sounds 3 short beeps.

•A maximum of 3 self-diagnostics reports are displayed, for 5 seconds each, beginning with the most recent report. Following this display the lamps turn OFF. In order to view the self-diagnostics results again, press the ON/OFF button again.

•The 3 lamps remain OFF if no trouble has occurred.

<IMPORTANT> After self-diagnostics is completed, be sure to press the ACL (reset) button to return to normal mode. The air conditioner will not operate if this is not done.

QUIET button

<Clock display > Test run mode

Self-diagnostics mode

ON/OFF operation button

1HR.

TIMER button

ACL (Reset) button

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Panasonic CS-MKE9NKU, CS-MKE7NKU Precautions before Performing Inspection or Repair, Method of Self-Diagnostics
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CS-MKE24NKU, CS-MKE12NKU, CS-MKE18NKU, CS-MKE7NKU, CS-MKE9NKU specifications

The Panasonic CS-MKE series comprises a range of advanced air conditioning units designed to provide efficient cooling and heating solutions for both residential and commercial spaces. The models in this series include the CS-MKE18NKU, CS-MKE7NKU, CS-MKE12NKU, CS-MKE24NKU, and CS-MKE9NKU, each tailored to meet various needs while ensuring energy efficiency and user comfort.

One of the standout features of the CS-MKE series is its inverter technology. This innovative approach allows the air conditioner to adjust its compressor speed in accordance with the set temperature, leading to reduced energy consumption and lower utility bills. The inverter system operates smoothly, maintaining a consistent temperature without the bothersome on-off cycling typical of traditional units.

Moreover, the models in the CS-MKE range are equipped with the Plasma Quad Plus air purification technology. This feature effectively eliminates harmful particles and odors from the air, ensuring that the indoor environment is not only comfortable but also healthy. The air conditioning units can filter out dust, pollen, and various allergens, making them ideal for allergy sufferers or those with respiratory issues.

In terms of cooling and heating capacity, the CS-MKE series provides a versatile range. From the compact yet efficient CS-MKE7NKU, suitable for smaller rooms, to the robust CS-MKE24NKU designed for larger spaces, users can find an option that best suits their needs. Each model comes with adjustable airflow settings, allowing occupants to direct cool or warm air to where it's needed most, enhancing comfort levels.

The aesthetic design of the CS-MKE units is another appealing aspect. With their sleek and modern exterior, these air conditioners seamlessly blend into a variety of interior styles. Their ultra-quiet operation further enhances the user experience, making them suitable for bedrooms, offices, or any environment where noise reduction is a priority.

User-friendliness is a key characteristic of the CS-MKE series, boasting remote control features and programmable timers that allow users to set cooling or heating schedules, ensuring comfort upon arrival home while maximizing efficiency throughout the day.

Overall, the Panasonic CS-MKE series air conditioners, including models CS-MKE18NKU, CS-MKE7NKU, CS-MKE12NKU, CS-MKE24NKU, and CS-MKE9NKU, offer a blend of advanced technology, energy efficiency, and design sophistication, making them a commendable choice for any space.
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