LG LMHM2237 Over-the-Range Microwave

Use this as your LMHM2237 reference: shared model numbers, ranked failures with the parts behind them, diagnostic codes, recall notes, and an honest fix-versus-replace framework. Skim it top to bottom before you book, or jump to the section that matches your symptom.

LMHM2237 at a glance#

The guidance here covers LMHM2237ST, LMHM2237BD — they share the LMHM2237 parts catalog and fail the same ways, so one repair note fits the group.

Common problems on the LMHM2237#

Here is the LMHM2237 failure list, most frequent first:

Magnetron failure. What you'll see: runs without heating. On the LMHM2237 it lands at about 30% of repair visits, and replacing the Magnetron 2M246 050GF clears it.

EasyClean interior staining from food splatter. Expect it in near 20% of the repairs logged on this platform. It is worth ruling out early, before it drags other components down.

Door switch pack intermittent. It accounts for roughly 20% of LMHM2237 service calls, and replacing the Door switch 6600W1K004F clears it.

Vent fan speed selector stuck on one setting. On the LMHM2237 it lands at about 15% of repair visits, and replacing the Fan speed switch/control board EBR86692760 clears it.

Turntable roller guide cracking. Expect it in near 15% of the repairs logged on this platform, and replacing the Turntable roller guide 5889W2A005K clears it.

Parts that fail most#

These are the LMHM2237 parts we replace most; verify the number on your data plate before buying.

Step-by-step replacement walkthroughs:

• Lg Microwave Motor Replacement Guide
• Lg Microwave Door Latch Replacement Guide
• Lg Microwave Switch Replacement Guide

Recall status#

No active recalls stand against the LMHM2237 as of 2026-05-28. Recalls can post at any time, so check cpsc.gov by model number and sign up for alerts.

Repair or replace?#

For the LMHM2237, a unit under 7 years old is almost always worth fixing when the repair runs below 50% of a replacement. Past 7 years, total up the last two-to-three years of repairs and lean toward a new unit once that sum clears 40% of replacement cost — you also reset the warranty clock.

Maintenance that heads off these failures#

A few habits keep the LMHM2237 out of the repair queue:

• Clean EasyClean interior with damp cloth immediately after splatters — the coating resists stains when cleaned promptly
• Replace charcoal filter annually if recirculating
• Clean grease filter monthly
• Close door gently — slamming wears door switch contacts

Long-term ownership notes#

Over-the-range microwaves typically last 7-10 years. The most important maintenance is keeping the grease filter clean (monthly in warm soapy water) and replacing the charcoal filter annually if the unit is not ducted to the exterior. Never run the microwave empty — this can damage the magnetron. Keep the interior clean to prevent food buildup from absorbing microwave energy and reducing heating efficiency.

Safety note#

If the magnetron is failing, do not continue using the microwave. Professional diagnosis is required — capacitors store lethal voltage even when unplugged.

When you would rather hand it off, book a LMHM2237 microwave repair: upfront pricing before any work and a 90-day warranty on parts and labor.