What to do if my Grunbeck WINNI-mat VGX Water Dispenser shows Er 4?
- RRobert OrtizAug 17, 2025
If your Grünbeck Water Dispenser displays error code Er 4, this indicates a low salt level. Check the salt level in the brine tank and refill with salt tablets as per EN 973 type A if needed. After refilling, wait 5 minutes and then acknowledge the error.





