# My “drip tray full” alert will not clear on my TK-02. What should I do?

> Its possible for this to happen if the drip tray sensor isnt registering To clear this empty the drip tray again and replace it with your TK02 If the aler

Source: https://support.terrakaffe.com/en_us/my-drip-tray-full-alert-will-not-clear-on-my-tk-02-what-should-i-do-SJQ3yqmIT

Last updated: 2026-07-21T14:21:15.165Z

If you've emptied your drip tray, slid it back into place, and your TK-02 is _still_ telling you to empty it, you are likely dealing with a sensor misread.

Inside the machine, small metallic contacts or sensors detect the presence and fill level of the tray. If moisture, steam, or stray coffee grounds bridge these contacts, the machine will assume the tray is still full or missing.

Here is how to clear the stuck alert and reset the sensor.

**1\. The Re-Seat:**

Pull the drip tray completely out of the machine. Give the rear contact points a quick wipe with a dry cloth, then slide it back into the TK-02 firmly to ensure it clicks into place.

**2\. Hard Power Cycle:**

If the alert persists, perform a hard reboot. Reach behind the machine and flip the main power switch to the **OFF (O)** position. Wait 10 seconds, then flip it back **ON (I)** to force the software to re-scan its hardware sensors.

**3\. Clear Moisture Build up:** The overnight fix.  
  
If the reboot doesn't clear the alert, moisture has likely seeped into the internal sensor housing. Power down the machine, pull the drip tray out entirely, and leave the tray out overnight to allow the internal sensor cavity to dry thoroughly.

  

![](https://cdn.kustomerhostedcontent.com/media/6320c21d66c4d179f1318fc9/13c7ff859bdd537653d0c21b73a93466.png)![](https://cdn.kustomerhostedcontent.com/media/6320c21d66c4d179f1318fc9/4c3b315b283023f92824291389c197c2.png)

> **Still stuck after drying overnight?**
> 
> If your machine has dried out and still refuses to clear the alert, the sensor contact may need hardware support. Drop us a line at **[contact@terrakaffe.com](mailto:contact@terrakaffe.com)** so our engineering team can assist.