Samsung ME16A4021 (AS/AB/AW) 1.6 cu ft OTR microwave: quick sheet

Covers: Samsung ME16A4021AS (stainless), AB (black) and AW (white); 'A' = 2021 model-year letter. Entry-level OTR often installed in rentals and builder kitchens.

Cross-checkedBrands: Samsung6 components

Basic 30 in Samsung OTR: 1.6 cu ft, 1,000 W, 300 CFM 2-speed vent, auto-cook and Eco mode, no sensor cook. Samsung OTR microwave codes (SE, E-xx, C-xx) already in the library apply. The common calls are door-switch faults, a dead keypad and 'no heat' from HV parts.

Safety first

CAUTION: the high-voltage capacitor can hold a lethal charge after the unit is unplugged. Only a trained tech opens the cabinet: unplug, wait, then discharge the capacitor with an insulated discharge tool before touching the HV section (transformer, capacitor, diode, magnetron).
Never run the oven with the wrapper or panels off, with an interlock defeated, or empty; never take live readings in the HV circuit.
After any door, hinge, latch or interlock work, confirm the door closes squarely and run a leakage survey (see microwave-leakage-limit-interlock-check-after-door-repair).
OTR units are heavy and hang on a wall plate plus top-cabinet bolts: two people, and support the unit before removing the top bolts.

How it works

Standard transformer HV circuit; power levels by on/off cycling.

Eco mode can turn the display off in standby; a blank display may be Eco mode, not a dead board. Check the owner's manual before ordering parts.

Vent is 300 CFM with 2 speeds, convertible to outside venting at install.

Components & tests

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Official manufacturer documentation

Always confirm values against the tech sheet for the exact model.

OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work. © 2026 OnCall Tech. Original content; not a reproduction of any manufacturer document.Generic part photos (not of this brand): Over-the-range microwave mounted above a stainless electric range by Curtis Adams, Pexels License

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