HVAC Sales Master

Fault Code Lookup

HVAC Sales Master
A221_F / A222_F / A223_F / A224_F / A225_F / A226_F / A227_F / A228_F
Internal fault family — Configuration data restore failure / Model data restore failure / Internal fault monitor-chip communication failure / Flame-status circuit failure / Gas valve 1 relay welded shut / Gas valve 1 relay stuck open / Gas valve 2 relay welded shut / Gas valve 2 relay stuck open
This code typically points to
  • Internal configuration-memory, communication, flame-circuit, or valve-relay faults
Next checks to confirm
  1. Public booklet identifies names only
  2. Detailed troubleshooting explicitly deferred to contractor app
Escalation
Active internal/safety fault family
Reset behavior
Depends on exact internal fault; booklet does not expose per-code reset procedure.
Safety Critical
Immediate concern
Deeper detail available
The manufacturer has pushed full per-code troubleshooting trees into the Rheem Contractor App (QR code on equipment). Use the app for subcode detail beyond what's shown here.
Source
Rheem RDFXYC Installation Instructions fault table. Grouped into single record because accessible booklet treats these as an internal-fault cluster without exposing per-variant detailed trees.
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