1. Press “SET” twice to access the set-point value.
2. Press “UP” or “DOWN” to change the set-point value.
3. Press “SET” to store the new set-point.
4. Press “EXIT” to return to the temperature display.
When the set-point temperature is changed the controller switches the heater on
or off to raise or lower the temperature. The displayed well temperature gradually
changes until it reaches the set-point temperature. The well may require 25
minutes to reach the set-point depending on the span. Another 10 to 15 minutes
is required to stabilize within ±0.03 °C of the set-point. Ultimate stability may take
20 to 30 minutes more of stabilization time.