MODEL PROFILE
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MODEL OVERVIEW
About this model: Midea MRW42B6AST
MRW42B6AST has two cooling zones and ten verified display faults, including fan speed and panel communication faults.
Confirm the cabinet and its two zones
Midea Canada's MRW42B6AST listing describes a 4.2-cubic-foot, 23.4-inch wine and beverage cooler with two glass doors. It advertises room for 21 wine bottles and 78 cans, but the owner's guide says bottle size and arrangement change the practical count. The left zone is intended for wine and the right for beverages. The exact owner PDF names MRW42B6AST alone on its front cover, which matters because another two-door cooler may use a different display alphabet. The product page allows built-in or freestanding placement and lists two nonreversible doors, adjustable legs, frost-free air circulation and UV-resistant Low-E glazing. Match the rating label before following any diagnostic instruction; appearance and approximate capacity alone do not prove the manual applies.
Install for airflow, then load bottles
The manual specifies a flat, ventilated location and says to leave the cabinet standing at least two hours after levelling before connecting power. For built-in installation it recommends at least 40 millimetres between the rear and the surrounding cabinet and an unobstructed front air outlet. It also recommends front feet about three millimetres higher than rear feet. Bottles should not touch the cabinet back, since that blocks air circulation, and oversized bottles reduce advertised capacity. A shelf can be lifted past its stop and drawn out, then reinstalled securely. Check these physical details if the drinks are warm or vibration is reported. They are useful owner checks, but a blocked vent is not proof that an E1 sensor fault has gone away.
Read operating states before fault characters
At first power-up the display lights for three seconds and sounds a prompt, then shows set temperatures in normal use. Holding Standby for three seconds changes operating state; holding the unit toggle for three seconds switches Celsius and Fahrenheit. The left zone has red, white and sparkling wine presets. On the right, rapid cooling deliberately shows FC, which is an operating mode rather than a fault. The manual says the cabinet restores previous settings after an unexpected power outage. There is a source discrepancy: the product page advertises a right-zone lower limit of 1°C, while the linked manual's operating text says 7°C. Use the actual controller's marked limits and ask Midea to clarify this difference; neither figure should be treated as a diagnostic code.
Distinguish sensor, display and fan faults
The rendered fault table on physical PDF page 13 lists ten displays. E1 is the left chamber temperature sensor, and E2 is the right chamber temperature sensor. E6+°C is specifically communication with the left display panel, while E6+°F concerns the right panel; the degree unit is part of each printed fault string here, not merely the temperature setting. L1 and L3 mean left and right chamber fan faults. L2 and L4 describe abnormal rotational speed for the respective chamber fans. L5 is the condenser fan fault, and L6 is abnormal condenser fan speed. Record the full sequence exactly: L1 versus L2 changes the meaning, and E6+°C versus E6+°F points to a different panel. The table identifies fault areas, not an owner procedure for opening the cabinet or replacing a fan.
Clean safely and report persistent faults
For maintenance, disconnect electrical power first; the manual also asks for a pause before restarting. Clean accessible surfaces and door seals without sharp tools or solvent damage. Its troubleshooting section allows ordinary checks such as supply power, level placement, blocked airflow and an unclosed door, then directs unresolved problems to after-sales service. The PDF contains a generic paragraph about flushing a water dispenser, although this exact product's listed equipment is a wine and beverage cabinet without a dispenser. Do not apply that unrelated paragraph to MRW42B6AST. If any of the ten fault strings persists, photograph the display, note the affected zone, set temperatures, bottle loading and whether fans appear to circulate air, then give the complete model and evidence to qualified service. Avoid dismantling electrical parts or the sealed refrigerant system.
Verified model details
Exact Canadian 4.2-cu.-ft. wine and beverage cabinet
Source for this detailTwo-zone setup and normal FC display
Source for this detailTen faults verified on PDF page 13
Source for this detailOwner care versus service work
Source for this detail
This description summarizes the linked source documents; check each cited source for your exact model and region.
Manufacturer source
Open official source
4.2 Cu. Ft. 23.4” Beverage Wine Cooler MRW42B6AST
Open official sourceIf there is a safety risk, stop using the appliance and follow the manufacturer’s instructions.