!!
critical Pureit
Error Code GKK Change Blinking Red LED
The respective Germkill Kit needs to be changed immediately. The Auto Shut Off feature will ensure you don’t drink unsafe water if the replacement is not done.
? What Causes This
Life cycle of Germkill Kit reached, or malfunction detected.
✓ How to Fix It
Contact Pureit helpline to get your kit replaced.
Source: page 4 of the official manual
From the manual
This error code appears in:
Pureit Marvella UV G2 Water Purifier