MITSUBISHI

HOME REFRIGERATORS

SERVICE MANUAL

2005

NO.SM-RE-0502

Models MR-385R-W-A MR-385R-ST-A MR-420R-W-A MR-420R-ST-A MR-455R-W-A MR-455R-ST-A

MR-385R-W-A(NZ) MR-385R-ST-A(NZ) MR-420R-W-A(NZ) MR-420R-ST-A(NZ) MR-455R-W-A(NZ) MR-455R-ST-A(NZ)

CONTENTS

 

1. SPECIFICATIONS

1

2. OUTLINES AND DIMENSIONS

7

3. WIRING DIAGRAM

10

4. REFRIGERANT CIRCUIT

11

5. NAME OF THE PARTS

13

6. TROUBLE SHOOTING

14

6.1 TROUBLE CRITERION OF MAIN PARTS

14

6.2 HOW TO CHECK P.C.BOARDS

16

6.3 TEST POINT DIAGRAM OF

 

MAIN CONTROL BOARD

17

6.4 MULFUNCTION DISPLAY AND CHECKING

 

POINT

18

6.5 IMPORTANCE DETAIL OF FAULT ANALYSIS.

19

7. DISASSEMBLY INSTRUCTIONS

20

8. PARTS LIST

23

A……......Australia

A(NZ) .....New Zealand

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Mitsubishi Electronics MR-385R-ST-A, MR-455R-W-A, MR-420R-W-A(NZ), MR-420R-ST-A(NZ), MR-455R-ST-A service manual Mitsubishi

MR-385R-W-A, MR-385R-W-A(NZ), MR-455R-W-A(NZ), MR-455R-ST-A(NZ), MR-385R-ST-A(NZ) specifications

Mitsubishi Electronics has long been recognized for its innovative solutions in the realm of air conditioning and climate control. Among its impressive lineup are the MR-455R-W-A, MR-385R-ST-A, MR-420R-W-A(NZ), and MR-420R-ST-A(NZ) models, each designed to meet diverse cooling and heating needs while ensuring energy efficiency and user comfort.

The MR-455R-W-A is a versatile unit that stands out for its powerful cooling capacity, making it ideal for larger spaces. It is equipped with advanced inverter technology, which allows the compressor to operate at variable speeds depending on the cooling or heating requirements. This not only enhances energy efficiency but also ensures quieter operation, making the MR-455R-W-A a perfect choice for residential and commercial environments.

Similarly, the MR-385R-ST-A model offers a balance of performance and compact design. This unit is particularly suitable for medium-sized rooms and employs a range of smart features, including a programmable timer and a user-friendly remote control. Its energy-saving mode aims to reduce electricity consumption during off-peak hours, making it an eco-friendly option.

The MR-420R-W-A(NZ) is tailored specifically for the New Zealand market, emphasizing performance in diverse climatic conditions. This model incorporates Mitsubishi's sophisticated air filtration technology, effectively removing dust, allergens, and other pollutants from the air, contributing significantly to indoor air quality. With its sleek design and efficient operation, the MR-420R-W-A(NZ) is ideal for modern homes looking for both aesthetics and functionality.

In contrast, the MR-420R-ST-A(NZ) offers similar benefits but with a focus on reliability and durability. Its robust construction ensures it can withstand varying weather conditions, while the energy-efficient operation helps in minimizing utility costs. Both MR-420 models share a common feature – the ability to operate quietly, making them suitable for bedrooms or study areas.

Each model utilizes Mitsubishi's proprietary technologies aimed at maximizing energy efficiency and comfort. Features such as self-diagnosis capabilities, easy installation, and maintenance enhancements contribute to the overall user experience.

In conclusion, Mitsubishi Electronics has designed the MR-455R-W-A, MR-385R-ST-A, MR-420R-W-A(NZ), and MR-420R-ST-A(NZ) as reliable and efficient air conditioning units. With features focusing on energy conservation, indoor air quality, and user-friendly operation, these models cater to a wide range of customer needs and preferences.