Goodman Error Code EEH indicates Twinning feature error (TWIN error). Start by checking the most common and safe items identified in the troubleshooting section. If the code returns after those checks, professional diagnosis is recommended.
Easy
Twinning feature error (TWIN error)
Twinning feature not working; furnace fails to operate; LED displays EEH
Improper twinning wiring connection or control board fault
Check wiring connections for twinning feature; replace integrated control board if wiring is correct
Twinning wiring, integrated control board
Call an HVAC technician if the error persists after completing the recommended basic troubleshooting steps or if the system repeatedly locks out.
Disconnect power before inspecting the equipment. Never bypass safety devices or operate the system if you suspect unsafe conditions.
Learn more about the furnace components and operating conditions commonly associated with diagnostic error codes: