How do I unlock the screen?
To unlock the keypad/screen on your STELPRO ST252NPFF thermostat, you need to access the advanced menus. Follow these steps: Press and hold the options…
Manuals+ Q&A
STELPRO ST252NPFF Non-Programmable Electronic Thermostat Owner’s Manual — questions & answers
Read product questions and troubleshooting answers linked to STELPRO ST252NPFF Non-Programmable Electronic Thermostat Owner’s Manual.
Browse topics
Answered questions
How do I program and lock the settings on the STELPRO ST252NPFF thermostat?
The STELPRO ST252NPFF is a non-programmable thermostat, meaning it does not support a weekly schedule. The temperature setpoint remains constant unless you manually change…