This is gonna be your main screen when you show up and look at the HeatPumPro. So if you’re looking at the top of the screen, it’s gonna show HVAC along with a condenser and an air handler. What this is showing you is exactly what we’re outputting to your equipment, so you can see in real time what the panel is doing.

In this case, you’ll see outputs like W1, W2; Y1, Y2 on the condenser; Y1, Y2 on the air handler; plus G and O. This represents exactly what signals are being sent out to your equipment, and what your equipment is actually receiving from the panel. It helps speed up troubleshooting because you can immediately verify system output.

Just underneath that, you’re gonna have OAT and LAT readings. OAT is outdoor air temperature. If you’re using a conventional gas furnace system with air conditioning, you don’t need to run the outdoor sensor outside, but it still needs to be connected to the panel. If it’s not connected, it will read 0 degrees and the panel will think it’s too cold to run the condenser, so you’ll only get fan operation.

Next to that is LAT, which is leaving air temperature. This is measured in the ductwork plenum and is used for temperature protection to make sure the system isn’t overcooling or overheating the air stream.

Below that you’ll see compressor lock. If the system overheats or the coil starts to freeze, you’ll first see a compressor stage lock that drops out Y2 or W2 depending on the system. If the condition continues, the compressor will shut down completely and only the fan will run until the duct temperature recovers by about 10 degrees.

Right below that is purge time. This only appears at the end of a call when all zones are satisfied. The panel will run the pump for a set amount of time, usually around 5 seconds per damper, to ensure all dampers return to the open position before the next call starts. This allows for smoother operation and prevents duct noise or pressure shock.

On the left side of the screen you’ll see zones that are actively calling, such as zone 1 through 4 depending on the system. It will also show zone weight, which represents how much ductwork is effectively open in the system at that moment, helping you understand system load and airflow conditions.