The KBURT3661A is an older 36-inch built-in bottom-mount refrigerator from Thermador’s KBU line, part of the same bottom-mount family as the later electronic KBULT3655E. Thermador still lists a service page for its FD variants.
On a bottom-mount this age, frost at the freezer seal and a fresh-food section that warms when an evaporator fan stops are the patterns seen most. Both are worth diagnosing before assuming the compressor or refrigerant charge is the problem; sealed-system work, if it is needed, is for an EPA-certified technician.
Key Features
- 36-inch built-in bottom-mount refrigerator from the KBURT family
- A-generation controls, earlier than the KBULT/KBURT 3655E-3675E models
- Fresh-food door above a bottom freezer
- Thermador service page for KBURT3661A/02
Most Common Issues on This Model
01
Freezer door or drawer frosting at the seal
02
Fresh-food compartment warm from a stopped evaporator fan
03
Ice maker (if equipped) slowing with age
04
Condenser under the top grille clogged with dust