Rheem R802VA07542117MSA Error Code A222_F: Model Data Restore Failure

What Does Code A222_F Mean?

Fault code A222_F on the Rheem R802VA means the Integrated Furnace Control (IFC) tried to reload its model data from onboard non-volatile memory when it powered up, and that reload failed. Model data describes the specifications tied to this exact furnace variant — the R802V's staging behavior, firing rates, and blower performance profile — as opposed to the installation-specific configuration data covered by A221_F. Because the Bluetooth Communicating IFC stores this data in board memory instead of hard-coding it at the factory, the board relies on being able to read that record back correctly every time it starts.

A restore failure here means the memory read for model data specifically came back corrupted, blank, or unreadable, while the configuration record may or may not be affected. Causes are the same categories that produce A221_F: a power surge that corrupted memory cells, memory wear over time, or a replacement board whose model data was never successfully written in the first place.

A222_F is closely tied to A001_F, Model Data Configuration Error — both describe the board lacking usable model data — but the distinction matters to a technician. A001_F means no valid model data has ever been successfully written to this board. A222_F means valid model data was written and accepted at some point, but the board later failed to read it back from memory, which points more toward a memory or power-event problem than an incomplete initial setup. A222_F can also appear alongside A221_F when both stored records are lost at the same time.

Because power cycling the furnace is what triggers the failed restore attempt, cycling power again does not fix A222_F on its own — the model data has to be rewritten through the Bluetooth contractor app.

What You'll Notice

• The furnace fails to start a normal heating cycle after being powered on
• The alphanumeric display shows A222_F
• The furnace behaves as if it has lost its prior setup even though it previously ran normally
• The fault appears after a power outage, surge, or shortly after a board replacement
• Repeated power cycling does not clear the code

Common Causes

How This Is Diagnosed

A technician connects to the IFC with the Rheem contractor app over Bluetooth and checks whether model data is present and valid, or corrupted. If A221_F is also active, the technician treats this as a broader memory issue rather than two unrelated faults and checks both records together.

The technician then writes the correct model data file for the R802VA07542117MSA through the app. If the board accepts the write and retains it through a power cycle, the fault is resolved by reprogramming. If the newly written model data fails to persist or the fault recurs shortly after, that indicates the board's non-volatile memory is unreliable and the IFC likely needs to be replaced.

When to Call a Professional

This code involves components that are not homeowner-serviceable, so have a licensed HVAC technician diagnose and repair it. Keep in mind:

• The display shows A222_F and the furnace will not run a normal cycle
• The fault appeared after a power outage, surge, or a recent board replacement
• Model data was reprogrammed previously and the same fault has returned
• A221_F and A222_F both appear at the same time, suggesting broader memory trouble on the board

✓ Verified against manufacturer service manual — March 2026