Figure 5: light bulb replacement, Service, Before calling service – Bosch DHL755BUC User Manual
Page 8: Troubleshooting chart, Table 2: troubleshooting, Ductwork is too small / undersized, Ductwork is too large / oversized, Ductwork is loose, Transition is too small or is loose, Wood screws are not fully tightened
English 6
Use a small flathead screwdriver (or your fingernail) to remove the lens.
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.
Before Calling Service
Use the suggestions in the chart below before calling for service to avoid service
charges.
Troubleshooting Chart
Figure 5: Light Bulb Replacement
Service
Table 2: Troubleshooting
Problem
Suggested Solution
Noise during operation
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.
Noise when unit is off
Backflow flap on outside of duct wall cap moves with
the wind. This is normal.