Chemical or burning plastic smell when the unit is running.

Safety first: Immediately unplug the unit if you smell burning. Do not continue to operate until inspected.

Steps to investigate burning smell:

• 1. Visual inspection: With the unit unplugged, remove the rear cover and inspect the control board, wiring, and compressor area for discoloration, melted plastic, or burn marks.
• 2. Check wiring harness: Look for wires touching hot compressor lines or sharp metal edges. Repair or replace damaged wiring and secure away from heat sources.
• 3. Examine control board: If components on the board appear burnt or cracked, replace the main control board.
• 4. Assess compressor: A compressor that overheats and emits a burnt odor may be failing internally and should be evaluated by a refrigeration technician.

Warning: Do not ignore burning smells; they can indicate a fire risk.