Manual for MR-B42S

Name: Manual for MR-B42S
Brand: Mitsubishi
Availability: InStock

Brand: Mitsubishi

Category: Refrigerator

Document Type: Manual

Language: EN

Uploaded: Nov. 21, 2025, 9:08 p.m.

Warranty Information

This appliance is designed for use in Hong Kong only and cannot be used in any other country.

Refrigerator Overview: This manual provides operating instructions for the Mitsubishi Electric Refrigerator-Freezer MR-B42S. It covers installation, control panel usage, compartment settings (Refrigerator, Freezer, Vegetable, Ice Making, Versa), and special features like HIKARI Supercool Freezing and AUTO Shelf.

Key Features:

Non-Freon Refrigerant: Uses isobutane and cyclopentane, which are environmentally friendly.
Revolving Shelf: Allows easy access to items at the top and innermost positions.
HIKARI LED & Filter: Sterilizes and deodorizes cold air.
AUTO Shelf: Height-adjustable shelves without removing food.
HIKARI Supercool Freezing: For preserving hot foods while keeping them tasty.
Soft Freezing: For convenient food preservation, allowing food to be cut easily.

Installation & Operation: Proper installation requires adequate space for ventilation and a level surface. Connect to a dedicated power outlet. The refrigerator takes time to cool down after initial power-up. Food should be placed inside only after the compartments have cooled.

Control Panel: The control panel allows adjustment of compartment temperatures, selection of ice making modes, fast cooling, and other settings. It includes a child safety lock and door alarm features.

Maintenance: Regular cleaning of the ice maker components (water tank, ice tray, pipes) is recommended to ensure hygiene and optimal performance. The manual also details how to remove and clean various parts of the refrigerator.

Troubleshooting and error codes

Situation	Check	Solution, Cause
Refrigerator is not cooling at all	① Is the temperature control set to "L"?	① Set to "M" or "H". ② It takes about 4-5 hours for the temperature to stabilize. In summer, it may take up to 24 hours. ③ Ensure proper installation with adequate space around the unit. ④ Check if air circulation is obstructed or if doors are not closing properly.
Low ice production / Ice cubes melt	① Is it newly installed?	① See "Refrigerator is not cooling at all", point ②. ② Ensure the water supply pipe and water tank are correctly installed. ③ Check if there are any foreign objects in the water tank or water supply pipe. ④ Check if food items are placed in the ice storage bin, blocking the sensor or door closure. ⑤ Check if the ice making compartment is set to "STOP". ⑥ If set to "CRL", it takes longer to make ice (approx. 5-8 hours). ⑦ Ensure the water tank is filled and the unit is not tilted.
Cannot make ice / Water in tank does not decrease	① Is it newly installed?	① See "Refrigerator is not cooling at all", point ②. ② Ensure the water supply pipe and water tank are correctly installed. ③ Check if there are any foreign objects in the water tank or water supply pipe.
Frozen compartment food thaws (other than freezer)	① Is the temperature set to "H"?	① Set to "M". Note that the "Fast Cooling" function temporarily lowers the temperature. ② Are high-moisture foods stored in the back of the compartment? ③ Is the ambient temperature below 5°C? ④ Was "Super Cool" activated when adding hot food? ⑤ Are frozen foods stored correctly (e.g., "FZR L" or "FZR M")? ② Store high-moisture foods and drinks towards the front. ③ Set temperature controls to "L" to prevent freezing. ④ Activate "Super Cool" when adding hot food. ⑤ Set to "FZR H".
Freezer compartment food thaws	① Was the temperature set to "H"?	① Set to "M".
Condensation inside freezer compartment / Frost on walls. Water dripping to floor.	① Are doors opened frequently or not closed properly?	① Reduce door opening frequency and ensure proper closure. Frost forms due to moisture in the air. For humid weather, condensation may occur, wipe with a dry cloth. ② Ensure the unit is level and the door closes properly. Adjust leveling feet if necessary.
Door opens easily / Door does not close	① Are foods blocking the compartment door or shelves?	① Remove obstructions. Adjust leveling feet if the unit is not level.
Door alarm sounds (beeping)	Check the door open alarm indicator.	The alarm indicates the door has been open for more than 1 minute. Close the door properly. If the alarm persists, check for pinched food or a faulty door seal.
Ice may be cracked or split due to fast freezing.	N/A	Use caution to avoid finger injuries when separating ice cubes.
White sediment (white crystal) or bubbles inside ice cubes.	N/A	This can occur when switching modes, using mineral-rich water, or storing ice for long periods. It is harmless.
Blue LED light on Versa compartment does not light up.	N/A	Confirm that the blue LED lights up when the refrigerator and Versa compartment doors are open. If not, contact customer service.