- Thermostatic mixing valve issue
- Control box malfunction
- Water supply issues (hot/cold)
Problem Description
Your Kohler Konnect smart faucet is dispensing water at a fixed temperature, or the temperature is not changing as expected when adjusted via the app, voice, or manual handle. This prevents precise temperature control.
Symptoms
- Water temperature stuck
- Hot/cold not working
- App shows wrong temperature
- Voice commands ignored
- Manual handle works but no change
- Happens intermittently
Recognize these? Here's what usually causes it.
Common Causes
- Thermostatic mixing valve issue
- Control box malfunction
- Water supply issues (hot/cold)
- Firmware glitch
- Sensor calibration error
- Debris in mixing valve
Most fixes happen in the first 3 steps.
Never attempt to force or manually adjust internal components of the control box without consulting the manual or Kohler support, as this can cause damage or leaks.
Step-by-Step Solution
Power Cycle the Faucet
Unplug the control box for your Kohler Konnect faucet (usually under the sink) from its power outlet for at least 30 seconds. Then, plug it back in. This can reset the internal thermostatic mixing valve and clear any temporary electronic glitches affecting temperature control.
Check Hot and Cold Water Supply
Ensure both the hot and cold water supply valves under the sink are fully open. Verify that you have hot and cold water available at other fixtures in your home. If not, the issue might be with your home"s water heater or main supply.
Recalibrate Temperature Sensor (If Applicable)
Some Kohler Konnect models allow for temperature sensor recalibration via the app or a specific procedure. Consult your faucet"s user manual or the Kohler Konnect app for instructions on how to recalibrate the temperature sensor, which can improve accuracy.
Update Firmware
Check the Kohler Konnect app for any available firmware updates for your faucet. Install any pending updates, as they often include bug fixes and performance improvements related to temperature control and sensor accuracy.
Inspect Thermostatic Mixing Valve
If comfortable, and with the water supply off, locate the thermostatic mixing valve within the control box (refer to your manual). Inspect it for any visible debris or mineral buildup that might be preventing it from adjusting properly. This is an advanced step; consider contacting Kohler support.
Quick Solutions
Still having issues? This is usually the deeper cause below.
Schedules that skip randomly are usually a daylight-saving holdover — delete and recreate the schedule to clear the corrupted entry.
Regularly flush your hot water heater and check its settings to ensure a consistent supply of hot water to your smart faucet.
Thermostat issues that keep returning are often caused by stale backup-battery memory holding old settings across power cycles without the user realising.
- Thermostatic mixing valve issue
- Control box malfunction
- Water supply issues (hot/cold)
- Firmware glitch
- Sensor calibration error
Before you go — try one of these (they fix most cases).
Official Manufacturer Manual
Kohler provides official product documentation through their online manual rather than downloadable PDF. Access setup guides, troubleshooting steps, and product specifications for your Kohler Konnect Faucet.
Source: kohler.com
Need More Help? Kohler Support
Note: The contact information below connects you directly to Kohler's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.





