Fault Code Lookup

HVAC Sales Master
Constant light / no pause / no flash
Board failure
This code typically points to
  • Failed outdoor control board

Next checks to confirm
  1. Verify board power and wiring
  2. Replace board if supply conditions are correct

Escalation
Board-level escalation.
Reset behavior
Not documented as a timed auto-reset in install/start-up manual.
Urgent
Fix now
Source
38TDB Table 5