| Freezer column stopped making ice | The most common Thermador call we get: failed ice-maker module, frozen fill tube or a weak inlet valve feeding the internal ice system. |
| Frost on the freezer back panel | Defrost heater or defrost sensor failure — a standard wear repair we perform routinely on the BSH platform. |
| Refrigerator section warm, freezer fine | Evaporator fan failure or a frosted coil from incomplete defrosts; on columns, each side is independent, so this isolates quickly. |
| Error code / warning on the display | BSH-platform controls log specific faults (sensor, fan, inverter). We read the stored codes first — it usually points straight at the failed part. |
| Water dispenser slow or leaking | Clogged filter housing or a weeping inlet valve; occasionally a frozen reservoir on older installations. |
| Tall column door not sealing | Compressed gasket or hinge drift on full-height columns — we realign and, if needed, replace the gasket. |
| Compressor running constantly, humming | Inverter-driven compressors modulate rather than click on/off — constant running with warm sections points to a sealed-system or inverter-board fault. We test the inverter before assuming the compressor. |
| Wine reserve temperature fluctuating | Zone sensor drift or an evaporator fan slowing down; verified against a calibrated thermometer, not just the display. |