Rheem R802VA07542117MSA Error Code A001_F: Model Data Configuration Error
What Does Code A001_F Mean?
Fault code A001_F on the Rheem R802VA indicates that the Integrated Furnace Control (IFC) board is missing or has corrupt model data. The R802VA uses a Bluetooth communicating IFC that requires model-specific parameters to be programmed directly onto the board via the manufacturer's contractor app.
This configuration contains details such as the specific firing rates, blower speed profiles, and safety thresholds for this exact furnace model. Without valid model data, the IFC cannot operate the furnace safely or correctly, so it locks out and displays this fault.
The most common scenario is a control board replacement where the installer did not complete the Bluetooth programming step. If programming was interrupted mid-process, the data can become partially written and invalid, which also triggers this fault.
Common Causes
When to Call a Professional
Contact a licensed HVAC technician if:
- Any time this code appears — writing model data to the IFC requires the manufacturer's Bluetooth contractor app and a licensed HVAC technician
- After a control board replacement, a technician must complete the Bluetooth programming before the furnace will operate
- If programming was previously attempted but the fault persists, a technician needs to verify the correct model data file is being used
✓ Verified against manufacturer service manual — March 2026