Fault Code Lookup

HVAC Sales Master
A116_F
One-hour lockout: flame presence alarm
This code typically points to
  • Flame detected when not expected — escalated state of A014_F

Next checks to confirm
  1. Find and correct underlying flame-presence fault (gas valve leakage, false flame signal)

Escalation
One-hour soft lockout
Reset behavior
Auto-clear after one hour OR power interrupt ≥5 seconds OR remove heat call.
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 one-hour soft-lockout section