HVAC Sales Master

Fault Code Lookup

HVAC Sales Master
A031_F
Open fuse
This code typically points to
  • Low-voltage fuse opened
  • Short in 24VAC control circuit
Next checks to confirm
  1. Inspect 24VAC circuit for short and replace fuse after correcting cause
  2. Public booklet elsewhere notes fault code 31 via Bluetooth app when fuse opens
Escalation
Fault until fuse/cause corrected
Reset behavior
Clears after fuse replacement and restoration of normal control power.
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 and earlier booklet note on code 31 via Bluetooth app
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