To Next PageTo Next PageWhy is the “Cool On” or “Heat On” flashing on my Honeywell Home RTH111B1024/E1 Thermostat?
The “Cool On” or “Heat On” is flashing because the compressor protection feature is engaged. To resolve this, wait 5 minutes for the system to restart safely. This protects the compressor from damage.
What to do if “Heat On” is not displayed on my Honeywell Home Thermostat?
If “Heat On” is not displayed, set the System switch to Heat, and set the temperature level above the current room temperature. This should activate the heating function and display “Heat On”.
What to do if “Cool On” is not displayed on my Honeywell Home Thermostat?
If “Cool On” is not displayed, set the System switch to Cool, and set the temperature level below the current room temperature. This should activate the cooling function and display “Cool On”.
General| Display | Digital |
|---|---|
| Programmable | No |
| Number of Stages | 1 Heat / 1 Cool |
| Voltage | 24V |
| Temperature Control Accuracy | ±1°F |
| Backlight | Yes |
| Temperature Range | 40°F to 90°F |
| Power Source | 2 AA batteries |
| Type | Non-Programmable Thermostat |
| Compatibility | Single-stage heating and cooling systems (gas, oil, or electric) |
