9-2. MALFUNCTION-DIAGNOSIS METHOD BY REMOTE CONTROLLER

<In case of trouble during operation>

When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop.

<Malfunction-diagnosis method at maintenance service>

IR wireless remote controller

CHECK display

ON/OFF button

CHECK

ON/OFF

TEMP

FAN

AUTO STOP

[Procedure]

1. Press the CHECK button twice.

Refrigerant address display

2. Press the temperature

Temperature buttons. button

"CHECK" lights, and refrigerant address "00" blinks.

Check that the remote controller's dis- play has stopped before continuing.

Select the refrigerant address of the indoor unit for the self-diagnosis.

Note: Set refrigerant address using the outdoor unit’s DIP switch (SW1). (For more information, see the out- door unit installation manual.)

CHECK button

MODE

VANE

AUTO START

CHECK

LOUVER

h

TEST RUN

 

min

SET

RESET CLOCK

 

HOUR button

3.Point the remote controller at the sensor on the indoor unit and press the HOUR button.

4.Point the remote controller at the sensor on the indoor unit and press the ON/OFF button.

If an air conditioner error occurs, the indoor unit's sensor emits an intermit- tent buzzer sound, the operation lamp blinks, and the error code is output.

(It takes 3 seconds at most for error code to appear.)

The check mode is cancelled.

Wired remote controller

 

ERROR CODE

 

TEMP.

 

 

ON/OFF



 

 

 

 

 

MENU

ON/OFF

 

FILTER

BACK

MONITOR/SET

DAY

 

CHECK TEST

PAR-21MAA

CLOCK

OPERATION

CLEAR

 

ERROR CODE

 

ERROR CODE



Turn on the power.

Press the [CHECK] button twice.

Set address with [TEMP] button if system control is used. Press the [ON/OFF] button to stop the self-check.

CHECK button  Address

 TEMP. button  IC : Indoor unit

OC: Outdoor unit

 Check code – – – – : No trouble generated in the past. F F F F : No corresponding unit.

Unit No.

Timer ON/OFF button

<To delete check code>

Display the error code on the self-check result display screen. The address for self-check will blink when the  ON/OFF

button is pressed twice within 3 seconds.

To be continued to the next page.

13

Page 13
Image 13
Mitsubishi Electronics PKA-A24KA4.TH MALFUNCTION-DIAGNOSIS Method by Remote Controller, Procedure, Wired remote controller

PKA-A36KA4.TH, PKA-A30KA4.TH, PKA-A24KA4.TH specifications

Mitsubishi Electronics introduces its PKA series of commercial air conditioners, comprising models PKA-A24KA4.TH, PKA-A30KA4.TH, and PKA-A36KA4.TH. These units are designed to meet the growing demand for energy-efficient and reliable climate control solutions in commercial spaces. Each model in the series is equipped with advanced features that set them apart in the competitive air conditioning market.

One of the main features of the PKA series is the innovative inverter technology. This technology enables the air conditioning units to adjust their cooling or heating output according to the indoor temperature, leading to significant energy savings. By operating at varying speeds rather than a constant rate, the inverter system provides a more consistent and comfortable environment while reducing energy consumption by up to 30% compared to traditional fixed-speed systems.

Another standout characteristic of the PKA-A24KA4.TH, PKA-A30KA4.TH, and PKA-A36KA4.TH models is their compact design. These units are designed for easy installation in various commercial settings while taking up minimal space. This is particularly beneficial for businesses looking to optimize their floor space without compromising climate control efficiency.

The PKA series features advanced filtration technology, including a highly efficient air purification system. This enhances indoor air quality by removing dust, allergens, and other airborne pollutants, creating a healthier environment for occupants. The inclusion of a self-cleaning function also contributes to maintenance ease, as the unit automatically cleans the heat exchanger, preventing dust buildup and ensuring efficient operation.

Mitsubishi's commitment to whisper-quiet operation is another critical feature of these models. They are engineered to operate at sound levels as low as 19 dB(A), making them ideal for environments where noise control is essential, such as offices, hotels, or healthcare facilities.

Moreover, the PKA series is compatible with Mitsubishi's sophisticated control systems, allowing users to manage their air conditioning remotely via smartphone or tablet. This level of control enhances user convenience and maximizes system efficiency by enabling real-time adjustments based on occupancy and other factors.

Overall, the Mitsubishi Electronics PKA-A24KA4.TH, PKA-A30KA4.TH, and PKA-A36KA4.TH units represent a perfect blend of modern technology and user-centric design, providing businesses with effective, efficient, and quiet climate control solutions. With their advanced features, energy-saving capabilities, and emphasis on air quality, these models stand out as premier choices for managing environmental comfort in commercial applications.