Mitsubishi Electronics MR-455R-W-A(NZ), MR-385R-ST-A, MR-420R-W-A(NZ) Disassembly Instructions

Page 21

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DISASSEMBLY INSTRUCTIONS

MR-385R-A

MR-420R-A

MR-455R-A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Unplug the power cord before prepairing and servicing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OPERATION PROCEDURE

 

 

 

 

PHOTO

1.

Remove parts insider the Freezer room

Photo 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(1)

Photo 1st Remove Crystal shelf Freezer,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ice corner tray assy, Ice tray, Ice box

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Crystal shelf F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ice tray

 

Fan Grille

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ice box

Ice corner tray assy

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(2)

Photo 2nd

Remove scews for closing Lead cover F,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Photo 2

 

Remove 2 Rivets From Fan grille

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Screw

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rivets

 

 

 

 

 

 

 

 

 

 

(3)

Photo 3rd

Cut binder, remove poly bag, Take off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

connector lead wire.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lead cover F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fan grille

 

 

 

 

 

 

 

Fan motor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(4)

Photo 4th

Remove Fan motor after remove fan and

Photo 3

 

remove screw out of fan motor base.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bag

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Defrost thermal fuse and Freezer thermistor

 

 

Binder

 

 

 

 

 

 

 

 

 

 

 

 

(5)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Photo 4th

Remove fan grille out of bell mouth, remove

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Connector lead wire

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the connector and plug to take out the thermal fuse and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

thermistor freezer.

 

Photo 4

 

Defrost heater and Drip tray

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Screw

 

 

 

 

(6) Photo 5th

Lift up evaporator and remove the defrost heater

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Thermal fuse

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

out of base after remove heater cover plate and drip tray

 

 

 

Fan motor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bell mouth

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Caution on assembly

(7)1. Insert the fan into the base of fan motor's shaft, check if the fan rotates with your finger.

2. When inserted drip tray to effect to slacken the lead

Photo 5

 

 

 

 

 

 

 

 

 

wire of defrost heater in order to prevent water from

 

Evaporator

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

entering the glass tube.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Def thermistor

 

 

 

 

 

 

3. Attach defrost thermistor with muffler and lighten the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Drip tray

 

binder.

 

 

 

 

 

 

 

 

 

Defrost heater

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heater cover

 

 

 

 

 

 

 

 

 

 

 

 

- 20 -

Image 21
Contents Mitsubishi Specification MR-420R-A MR-420R-ANZ MR-455R-A MR-455R-ANZ MR-385R-A MR-385R-ANZ Electrical Parts SpecificationMR-420R-A MR-420R-ANZ MR-455R-A MR-455R-ANZ Outlines and Dimensions MR-420R-A MR-420R-ANZ MR-455R-A MR-455R-ANZ Actual Wiring Diagram Skeleton Wiring DiagramRefrigerant Circuit MR-455R-A MR-455R-ANZ Name of Parts Trouble Shooting Measure the resistance with a tester Precautions HOW to Check P.C BoardsTest Point Diagram of Main Control Board Malfunction Display and Checking points Yes Caution Importance detail of fault analysisDisassembly Instructions Remove parts inside the refrigerator Operation ProcedureFigMR-385R,420R,455R Operating ProcedureDOOR, Body Parts Parts ListPart Name Spec Accessory Parts Part Name Spec Electricial Parts and Unit Parts Evaporator Packing Part B BOX Assy Mitsubishi Electric Corporatation

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.