⚠
warning White
Error Code Display blanks out and does not respond
Thermostat malfunction possibly due to static discharge or voltage spike — display becomes unresponsive.
? What Causes This
Voltage surge, static electricity build-up
✓ How to Fix It
- Replace batteries if low.
- Press time button simultaneously with up and down buttons to reset.
Source: page 8 of the official manual
From the manual
This error code appears in:
White Rodgers 1f78