If your digital thermostat has a separate fan speed setting or terminal, you may be able to use a jumper wire to control the fan speed. However, please note that the specific wiring and compatibility can vary depending on the thermostat model and HVAC system you have. Here's a general guideline:
Identify the terminals: Check the wiring terminals on your digital thermostat. Typically, the terminals are labeled with letters such as R, W, Y, G, etc. The G terminal is usually associated with the fan.
Locate the jumper wire: If your analog thermostat has a separate fan speed setting using a jumper wire, you'll need to identify the corresponding terminal on the digital thermostat. This terminal may be labeled differently, such as "Fan," "G," or "FANSPD."
Connect the jumper wire: Remove the jumper wire from the analog thermostat and carefully connect it to the appropriate terminal on the digital thermostat. Make sure the connections are secure.
Test the fan speed: Once the jumper wire is connected, set the fan speed on the digital thermostat to the desired setting. Test the system to ensure the fan operates at the intended speed.
It's important to note that not all digital thermostats support fan speed control, especially basic models. Additionally, depending on the HVAC system and thermostat compatibility, you may require additional wiring or configuration. If you're unsure about the compatibility or proper wiring, it's recommended to consult an HVAC professional or refer to the manufacturer's instructions for your specific thermostat model.