Fault Code Lookup

HVAC Sales Master
2 flashes
Retries or recycles exceeded
This code typically points to
  • Repeated failed ignition
  • Repeated flame loss after lightoff
  • Gas delivery instability

Next checks to confirm
  1. Check igniter and gas supply
  2. Verify flame sense and grounding
  3. Inspect burner carryover and combustion stability

Escalation
This is typically a result code, not the original root cause. Check fault history for preceding live-cause codes.
Reset behavior
Stored in memory; auto-erased after 14 days.
Urgent
Fix now
Source
Emerson 50V64-743 diagnostic features