Rheem R802VA07542117MSA Error Code A227_F: Internal Fault: Gas Vlv 2 Rly Welded Shut
What Does Code A227_F Mean?
Fault code A227_F on the Rheem R802VA is the two-stage-only counterpart to A225_F, and it indicates that the relay controlling gas valve 2 (the high-stage gas valve) on the IFC board has welded shut. Two-stage furnaces use a second gas valve relay to enable high-fire operation; the welded relay means this second relay cannot open and the high-stage gas valve remains continuously energized.
With the high-stage relay welded shut, the furnace cannot de-energize the high-stage gas valve, creating a condition where gas may flow at high-stage rates even when only low-stage or no heating is commanded. This is a critical safety fault requiring the same immediate response as A225_F: shut off the manual gas supply valve to prevent uncontrolled gas flow.
The welded relay is integral to the IFC board and cannot be field-repaired. The entire control board must be replaced. After replacement, the new board requires the full Bluetooth programming sequence for model data, blower coefficients, and configuration.
Common Causes
| Cause | Likelihood | DIY? |
|---|---|---|
| Gas valve 2 relay contacts welded due to electrical arcing | Most common | ✗ Call a pro → |
| Control board component failure | Common | ✗ Call a pro → |
When to Call a Professional
Contact a licensed HVAC technician if:
- Turn off the manual gas supply valve immediately and call a technician — this is a critical safety fault on your two-stage furnace
- The control board must be replaced; the welded relay cannot be repaired individually
- After board replacement, a technician must complete all required Bluetooth programming and verify both gas valve relays operate correctly
✓ Verified against manufacturer service manual — March 2026