Thermador VCI29CS User Manual - Page 8

Use a small flathead screwdriver (or your fingernail) to remove the lens. Figure 5: Light Bulb Replacement Pull damaged bulb straight out from the socket to remove. Press pins in bulb base straight into socket until fully seated. Snap lens back into place. Do not use cooktop while hood is disassembled, to ensure adequate ventilation. Service Before Calling Service Troubleshooting Chart Use the suggestions in the chart below before calling for service to avoid service charges. Table 2: Troubleshooting Problem Suggested Solution Noise during operation Noise when unit is off Some noise is normal do to vibration and air movement. Excessive noise could indicate one of the following: 1. Ductwork is too small / undersized 2. Ductwork is too large / oversized 3. Ductwork is loose 4. Transition is too small or is loose 5. Wood screws are not fully tightened 6. Loose screws in trim parts, etc. Check Installation Instructions to verify that ductwork is the proper size. Tighten screws. Backflow flap on outside of duct wall cap moves with the wind. This is normal. English 6