Fault Code Lookup

HVAC Sales Master
A044_F
Inducer low-pressure switch won't open
This code typically points to
  • Pressure switch remains closed when it should reopen

Next checks to confirm
  1. Check low-pressure switch state, tubing, and inducer proving sequence
  2. Detailed tree delegated to contractor app

Escalation
Pressure-switch/inducer family
Reset behavior
Clears when switch state normalizes and cycle restarts.
Urgent
Fix now
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