Samsung · Microwave Minor

-dr- — Door Open (Demo / Reminder)

Display shows '-dr-' (or 'door') when a cycle is started but the door is not fully closed, or one of the door switches is not making contact.

Keep using it?
Yes — fix when convenient
DIY difficulty
Easy
Verified against
samsung.com ↗

How to fix it

  1. Open and firmly re-close the door.
  2. Clean the latch hooks and switch plunger area.
  3. Inspect for door sag — gently lift while closing to test.
  4. If error persists with a closed door, unplug and test/replace the primary interlock switch.

Why it happens

Typical signs: '-dr-' or 'door' shown on display · Cycle won't start until door is closed · Sometimes shown even with door appearing closed

  • Door not fully latched Push the door firmly until latch engages on both sides.
  • Food debris in door seal/latch Crumbs or buildup keep latch from engaging.
  • Misaligned/sagging door Hinge wear prevents proper latch engagement.
  • Failed primary interlock switch Switch doesn't close even though latch is engaged.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • Samsung microwave door interlock switch Common replacement
    Amazon →

More Samsung microwave codes

5E 5E / SE — Touchpad Shorted (Older Spelling) C-21 C-21 — Cavity Over-Temperature C-22 C-22 — Temperature Sensor Error C-A0 C-A0 — Communication Error Between Boards C-A1 C-A1 — Functional Error (Damper / Sensing) C-A2 C-A2 — Humidity Sensor Short Circuit

All Samsung codes → All microwave codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: samsung.com.