Kasa KE100 Showing E1 or E2? Here’s How to Fix It

Step-by-step fix guide | Kasa KE100

Try this first — E1 is usually fitting or calibration; E2 is usually a stuck valve pin.

If the KE100 shows E1 or E2, these are the checks from Tapo’s KE100 error guide.

What This Problem Means

The valve cannot calibrate (E1) or cannot move the valve pin (E2).

Common Symptoms

  • E1 on the display
  • E2 on the display
  • The valve will not move

Safe Checks You Can Try

1. E1: recalibrate

Tapo says to turn the valve to recalibrate it, check it is seated properly, and check the connector is M30 x 1.5 or use an adapter.

2. E2: free the pin

Tapo says the pin may be stuck with limescale. Work the valve pin in and out; refit the old head and open and close it a few times.

3. Refit and replace the batteries

Refit the KE100 and fit new batteries.

When To Contact Support

If none of these checks fix it, contact TP-Link support through TP-Link’s UK support site. Have your KE100 or KE110 and KH100 hub model numbers ready.