Bosch
Temperature Reading Inaccuracy
Thermostat shows incorrect room temperature compared to other thermometers.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Poor thermostat placement (drafts, sunlight, exterior wall), Internal sensor drift, Wall cavity air leaking behind thermostat, Heat from wiring or electronics affecting sensor
How to Fix / Troubleshooting
Safety: Turn off power before removing the thermostat from the wall.
- Compare readings: Place a reliable thermometer near the thermostat and wait 30 minutes before comparing.
- Seal wall opening: Remove the thermostat and use foam or putty to seal large gaps in the wall box that allow wall cavity air to influence the sensor.
- Adjust offset: Use the thermostat’s temperature calibration/offset feature to correct small differences.
- Relocate if necessary: If the thermostat is on an exterior wall, in direct sun, or near vents, consider relocating it to an interior wall per Bosch guidelines.
- Replace if error is large and persistent: Significant inaccuracies despite good placement and offset may indicate a failing sensor.
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Repair Difficulty
Medium
3/5
Required Part
Bosch Smart Thermostat Main Control Assembly
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