Bosch Refrigerator rt Reports the Room Temperature Sensor

What rt means

The sensor named in rt is the one that reads the air around the refrigerator, called RT in the repair manual, and the code means it shows a break or a short. Because the probe measures the kitchen and not the cabinet, the control uses it to decide how hard the compressor should work in a warm or cool room. Cooling carries on, but the machine becomes less efficient.

Common causes of rt

Room sensor that has gone open-circuit or shorted
Plug on the main board that has come loose
Wiring damaged near the machine compartment

✓ One safe check you can try

1. Look at where the refrigerator stands: is it beside a dishwasher, an oven or a sunny window? 2. Note how much open space it has at the back and sides. 3. Nearby heat makes the compressor behave differently even with a healthy sensor, so open up the clearance if you can, and call us if rt stays.

! Why to stop there

Cooling continues, so the code is easy to leave, but the compressor may run more than needed and use extra power.
Reaching the machine compartment means moving the refrigerator and handling wiring close to the compressor.
A problem in the harness can look like a sensor failure, so swapping the sensor alone is not always enough.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Refrigerator codes

C1Bosch Refrigerator C1 Means the Compressor Runs but the Cabinet Will Not Cool F3Bosch Refrigerator F3 Shows a Freezer Defrost That Timed Out r3Bosch Refrigerator r3 Shows a Fresh Food Defrost That Timed Out ESBosch Refrigerator ES Means a Dispenser Button Reads as Pressed E21Bosch Refrigerator E21 Means the Dispenser Module Stopped Responding F1Bosch Refrigerator F1 Shows the Freezer Sensor Reads Open or Shorted r1Bosch Refrigerator r1 Marks a Fresh Food Probe With No Usable Signal u1Bosch Refrigerator u1 Points to the V-Sensor

rtrt questions

Will rt stop my refrigerator from cooling?

No, cooling continues as usual. What changes is how well the control adjusts to the room, so it may run harder than it needs to.

Why does the kitchen matter for this sensor?

The sensor reads the air around the appliance. A hot spot nearby changes how the control decides to run the compressor, even if the sensor is healthy.

Is rt urgent?

It is not urgent, but it is worth a visit before long. We test the sensor and its wiring and give you a written price before any work begins.