What rt Means
rt on a Bosch French door refrigerator is the room temperature sensor, abbreviated RT in the repair manual, reporting a disconnection or a short. This probe reads the air around the appliance rather than inside it, which the control uses to adjust how hard the compressor works in a warm or cool kitchen. A fault here does not stop cooling but does make the appliance less efficient.
Common Causes of rt
- Room temperature sensor failed open or shorted
- Sensor connector loose at the main board
- Harness damage near the machine compartment
🔧 One Safe Check You Can Try
Check the clearances around the refrigerator, especially whether it has ended up alongside a dishwasher, oven or a sunny window. Bosch uses ambient temperature to tune compressor behaviour, so an appliance in an unusually warm spot behaves differently even with a healthy sensor.
⚠ Why You Shouldn't Go Further Than That
- The ambient sensor sits near the machine compartment, where the compressor start circuit and its capacitor are also located.
- Moving a French door refrigerator to reach the rear without the right technique stresses the water line on plumbed models.
- Resistance measurement at the named board connector risks disturbing the other circuits that land there.
- A sensor replaced when the real issue is where the appliance stands wastes the part and leaves the efficiency problem in place.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.