Excessive condensation or moisture on the inside of the glass door or interior walls.

Safety first: Condensation can make surfaces slippery; wipe up water promptly. Disconnect power before accessing heater wiring.

Step 1 – Check gasket and door closure

• Inspect the gasket for damage and ensure the door closes fully.
• Adjust leveling so the door self‑closes gently.

Step 2 – Reduce humidity and door openings

• Use a dehumidifier in very humid rooms.
• Minimize door openings and avoid leaving the door ajar.

Step 3 – Verify door heater operation

• If equipped with heated glass or frame heaters, check for EC33/EC35 codes and follow those procedures.