Error E[r] during calibration

Please try the following step-by-step procedure including the trick with the 2 cent coin. We have learned that around 10% of the valves used have a slightly too small stroke, the coin compensates for this. If it works with the coin, we will gladly send you a mini adapter, which is put over the pin of the valve and compensates the stroke.

1. Delete Eve Thermo from Eve app
2. Un-mount Eve Thermo and make sure that you can move the valve on heater side (if not use grease and eventually hit the valve's body with a hammer to solve the problem)
3. Put new batteries in Eve Thermo ("E[x]" means either calibration problem or discharged batteries)
4. Hard reset Eve Thermo until the 66/99 appears on the LED.
5. Press one of the arrow on screen until "E[x]" disappears (the screen will then show "no", which means "mounting" and the valve will move to a correct mounting position)
6. Re-pair Eve Thermo in Eve app and follow instructions to mount it and calibrate it.
7. Insert a 2 cent coin into the valve holder of Eve Thermo.
8. Follow the assembly and calibration instructions.

If the code "E[x] does not appear on the display of the Eve Thermo during step 5, please skip this step.