Troubleshooting
- 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 - How to wire the field installed smoke detector on a Legacy 2020-2023 unit.
- Foundation - Medium- Error Code E5 - Evaporator coil temperature sensor fault for Circuit A (T2-A / plug CN40)
- Foundation - Medium- Error Code E6 - Evaporator coil temperature sensor fault for Circuit B (T2-B / plug CN41)
- Foundation - Medium- Error Code Eb - Thermostat output signal sequence fault
- 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- 410A Refrigerant Charging Chart
- Foundation- Medium- 454b Refrigerant Charging Chart
- Foundation- Medium- Error Code- 1b3 / 2b3 / 1b4 / 2b4 / 1b7 / 2b7 / 1b8 / 2b8- How to troubleshoot and replace the 454B leak detector sensor
- Foundation- Medium- Error Code- E0 / E01 How to troubleshoot incoming power / phasing error code.
- 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 - Error Code- E2 - How to troubleshoot a Condenser Coil Temperature Sensor T3-B Fault
- Medium Foundation - Error Code E7 - Discharge temperature sensor fault for system A (T5-A)
- Medium Foundation - Error Code E8 - Discharge temperature sensor fault for system B (T5-B)
- Medium Foundation - Error Code E9 - Indoor ambient temperature sensor fault (T1)
- Medium Foundation - Error Code EA - Outdoor ambient temperature sensor fault (T4)
- Medium Foundation - Error Code Ec - Error in model number selection (SW1)
- Medium Foundation - Error Code H7 - P4 or P6 or PE occur 3 times within 60 minute
- Medium Foundation - Error Code H8 - P5 or P7 or PF occur 3 times within 60 minutes
- Medium Foundation - Error Code H9 - Pb error occurs 6 times within 120 minutes
- Medium Foundation - Error code P1 - High Pressure Switch Reverse Protection
- Medium Foundation - Error Code P2 - Low-Pressure Switch Reverse Protection
- Medium Foundation - Error code P3 - Indoor Fan Overload Protection
- Medium Foundation - Error code P4/P5 - Low Pressure Switch protection for system A/B
- Medium Foundation - Error code P6/P7 - Discharge temperature protection for system A/B
- Medium Foundation - Error Code P8 - Discharge temperature sensor reverse protection
- Medium Foundation - Error Code PA - VFD Protection