Kalos GM Jesse goes over the straight cool setup & wiring of a Honeywell FocusPro thermostat for a basic A/C system.

The red wire goes on the R terminal, and it supplies 24v of constant power. Then, the yellow wire will go to the Y terminal, where it supplies a 24v call for cooling and engage the contactor coil at the outdoor unit. The blue wire attaches to the C terminal, which is the 24v common. From there, the white wire goes to the W terminal, which is the 24v call for heat. Finally, the green wire is the 24v call for the indoor blower.

First, hold the up arrow and fan button for approximately 10 seconds until the display shows a 1 and a 0. Then, you can use the up/down arrows to change the setting and select the "Next" button to configure the setting shown. The instruction manual shows the default settings in bold and dark font. For "System Type" (Option 1), the number 0 represents 1 heat/1 cool, which is the default. Since that is what we want to use in this case, we can proceed by pressing "Next."

The "Fan Control" (Option 3) enables us to specify if we have a gas furnace or an air handler with electric heat strips. In this case, we're dealing with a gas furnace, so we need to select 0.

For the "Stage 1 Heat Cycle Rate" (Option 5), Jesse selects 9 for an electric furnace.

For the "Stage 1 Compressor Cycle Rate" (Option 9), Jesse uses the recommended 3 cycles per hour. In most cases, that default setting will work just fine.

The "Manual/Auto Changeover" (Option 12) choice will vary by customer. Leaving the setting at the default 0 will make the changeover manual under all circumstances. Bumping the setting up to 1 will give you the auto changeover capability. The 2 setting is for the "auto" function only and is best for customers who don't like to work with the thermostat technology.

Option 14, the "Temperature Display," is also variable based on the customer's preferences, though most in the USA would probably leave it at 0 to keep the Fahrenheit scale.

We can also set the "Compressor Protection" (Option 15), but it's often fine to leave it at the default 5 minutes of off time.

The final options that matter to us in this scenario are "Heat Temperature Range Stops" (Option 27) and "Cool Temperature Range Stops" (Option 28), which are the maximum and minimum temperatures, respectively. Again, these will come down to the homeowner or property manager's preferences.

The Honeywell FocusPro 5000 also comes with an installer system test, in which you would hold down both arrows for about 10 seconds. Once the display changes, the installer or service tech can use codes in the manual to test the system under the conditions listed in the manual to confirm proper operation. This test mode allows the HVAC service professional to test the system without any delays. Selecting "Next" will allow the installer or service tech to proceed with the next test in the manual (from 10 to 30, 30 to 40, etc.).

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