In order for you to connect a split A/C unit to the iPonic, you MUST HAVE A LOW VOLTAGE INTERFACE & BUILT IN THERMOSTATIC CONNECTIONS to achieve this.
iPonic is a Low voltage contact closure -- MUST HAVE A THERMOSTAT TERMINAL AND A 24V DRY CONTACT
Wiring a Thermostatic Control for an AC/Heater Unit
To wire an AC/Heater you will need to devote three outputs: one for the fan/blower, one for the AC, and one for the furnace. The accompanying drawing shows the heater wired to output 5 (which is by system default, the output assigned for a heater,) the AC wired to output 8 and the unit fan wired to output 7.
Note: Before you begin wiring, your unit must have built-in thermostatic connections. Wire colors and setup are typical only. This equipment type and associated wiring are provided by others. You should consult the documentation from the unit manufacturer to confirm the accuracy of these instructions.

To wire this unit:
Remove power from the controller and the AC/Heater.
Open the front panel of the controller and locate the relay outputs on the circuit board.
Disconnect the yellow wire from the 5+ relay and cap/wire nut it.
Then remove the two black wires from the 5- relay and cap/wire nut them together.
Connect the red wire from your AC/Heater to the 8- relay and daisy chain it to the 7- and 5- relays.
Connect the yellow wire from your AC/Heater to the 8+ relay; you will program this as your AC output.
Connect the green wire from your AC/Heater to the 7+ relay; you will program this as a fan.
Finally, connect the white wire from your AC/Heater to the 5+ relay; you will program this as your heater.
To program this setup:
First you will want to give each output the correct type. From the main menu, select "System Setup" then "Equipment Setup" then "Advanced." In turn, select outputs 5, 7 and 8. Under each you will want to select button 3 "Initial Settings" and press button 1 “Set Type” to give each the correct equipment type (5-Heater, 7-Fan, 8-AC).
If you have Vent Fans hooked up to output 6, you might also want to give the fan wired to output 7 a distinct name such as "blower" or “unit fan” to avoid confusion later on in the programming. Under “Initial Settings” press button 3 “Set Name,” use the BACK button to erase the default name and choose each character of the desired name by repeatedly pressing the button for that character until it appears on screen, if the next character in the name corresponds with the same button as the last you must wait two seconds before pressing the button to choose the next character. When you are done selecting a name press OK to accept it and press OK again to save it.
After setting the type and name for each of the three outputs, under one of the three outputs/equipment types you will want to choose button 4,"Assign Stage." Select button 1 for “Temp Stages.” Select button 2, “All equipment stages.” Using buttons 5-8, select the stages and equipment that should be affiliated with one another. Press button 3 “Setup” and use the wheel to choose “On.” Make sure you assign the blower from the AC/Heater to both the heating stage AND the cooling stage in which you utilize the AC, otherwise it will not engage and blow the warmed or cooled air. When you have assigned all equipment and stages, press OK, press OK again to save your changes.