| Application: | Heat Pump Single-Stage (Heat/Cool) |
|---|---|
| Programmability: | 7 Day Programmable |
| User Interface: | Push Button |
| Mount: | Horizontal |
| Options: | Password Lockout Fan Control |
| Power Method: | Battery |
| Warranty: | 3 Year |
According to the manual, to prevent tampering, press NEXT NEXT NEXT HOLD. This sequence of keys will lock and unlock the set temperature, programs and other settings. If this does not work then we suggest contacting Lux directly for further assistance with their products.
Please refer to the operating manual for the thermostat, which can be viewed here: http://s3.pexsupply.com/manuals/1273868502678/30488_PROD_FILE.pdf The manual does state to rotate the dial back to RUN to accept all current values and end the programming session.
You will need to perform a hardware reset. This button will unlock your thermostat and read option switch positions, before the unit begins normal operation. It is located inside on the rear of the unit’s circuit board. It is a small square component labeled S8, with a white button at it’s center.
Had the same problem and I found this in the manufacturer's PDF Manual: LOCK To prevent tampering, press NEXT NEXT NEXT HOLD. This sequence of keys will lock and unlock the set temperature, programs and other settings. When the keys are locked, a padlock icon will be visible above the time and temperature display. The Lock will be disabled after a Hardware Reset. If you press 'NEXT NEXT NEXT HOLD' it UNLOCKS. If you want to DISABLE the lock, you do the hardware reset.