Goodman has released their SD (side discharge) units with inverter technology! Attached is the install and commissioning training documents for easy set up. These inverter systems will require a proprietary controller (thermostat), the GTST. They will not work with out it.

 

Here are some notables worth mentioning:  Make sure you have a compatible set up below is a quick reference. If your indoor equipment was manufactured prior to May of 2023, use the Cool-Cloud app to push any updates to the equipment first. These earlier indoor models may not communicate with Goodman SD unless updated. During set-up on the Goodman Installer app, keep your device (phone or tablet) within 2 feet of the GTST control. Also, any extra conductors should be tied to cabinet ground to eliminate interference with communication. For example, if you ran 6 wire to the stat, you only need to use 4 of them, wire nut the two extras together behind the stat, and tie them to cabinet ground back at the equipment. Lastly, follow the commissioning guide STEP-BY-STEP EXACTLY TO A T, do not short-cut or deviate from the steps. 

 

NOTE: E11 will be displayed on the outdoor section during power up. This is a system verification test that MUST BE COMPLETED before start-up. This is done at the wall control in menu option 20. This test will last up to 15 minutes to complete. If the test runs longer than 15 minutes, check the indoor equipment for fault codes. It is normal for the outdoor section seven second LED display to go blank during verification or run.  

 

 

 Here is the link for the SD Inverter Service manual.pdf

 

 

 

 

FAQ's

 

Q: Why is my test taking longer than 15 minutes?

 

     A: If the verification test is taking too long to complete, check the indoor furnace or air handler, EEV coil and outdoor section for fault codes. Correct the fault and restart the test.

 

Q: What should the communication voltage be?

 

    A: At any point of the communicating system, the DC voltage measurement between terminals 1 and 2 should be .6VDC

 

Q: What is a E15 fault? 

 

    A: E15 is a pressure fault. If you get this fault during the Verification test, make sure your liquid and suction service valves are fully open. (Very common mistake)

 

Q: Can I use a regular thermostat on Goodman Side Discharge inverter systems?

 

    A: NO. The communicating wall thermostat dedicated to this system MUST be used. All components must be communicating with the exception of the furnace, in which case you can use an interface module DTA119A (Cooling SD units only!)

 

Q: Do I need a special R32 kit for this system?

 

    A: If the entire system is R32 ready, you will not need a mitigation kit. The Furnace will communicate with the leak sensor and force mitigation as needed. If the Furnace is a non-communicating, you will then need the dragonfly mitigation control.