Electrical/Controls
- Foundation- Medium- Error Code- 1b3 / 2b3 / 1b4 / 2b4 / 1b7 / 2b7 / 1b8 / 2b8- How to troubleshoot and replace the 454B leak detector sensor
- Foundation - Medium- How to wire a smoke detector or safety device to a 7.5 ton - 12.5 ton DOE 2023-2024 main board.
- Foundation - Medium - How to wire the field installed smoke detector on a Legacy 2020-2023 unit.
- Foundation - Medium - How to set the SW1 dip Switches on the Main Board
- Foundation - Medium - How to view the Main Board mode descriptions and error history log.
- Foundation- Medium- Error Code- E3 / E4- How to troubleshoot an error code for the Electronic Expansion Valve EEVA and EEVB.
- Foundation- Medium- Error Code- Main Board display error codes list
- Foundation-Medium - Error Code- E1 - How to troubleshoot a Condenser Coil Temperature Sensor T3-A Fault
- Foundation - Medium - Temperature and Refrigerant Sensor Locations
- Medium Foundation Phase Monitor Info
- Foundation - Medium - Legacy 2020 -2023 Main Board Connections voltages
- Medium Foundation Main Board Versions (based on unit voltage)