Interior lights stay on after door is closed, causing heat and possible melting near light housing.

Safety first: If you suspect the lights are staying on, unplug the refrigerator to prevent heat damage. Bulbs and housings can become very hot.

Step 1 – Confirm lights staying on

• Place a smartphone in video mode inside the refrigerator and close the door; review the video to see if lights remain on.

Step 2 – Inspect door switch

• Locate the door switch and press it manually; lights should turn off.
• If they do not, test the switch for continuity and replace if faulty.

Step 3 – Check door alignment

• Ensure the door fully depresses the switch when closed; adjust hinges or leveling if needed.

Step 4 – Verify bulb type

• Use only the recommended wattage and type of bulb or LED module specified by Sub‑Zero.

When to call a professional: If the switch is good but lights remain on, the control board’s light relay may be stuck and needs replacement.