HVAC Sales Master

Fault Code Lookup

HVAC Sales Master
84-11
VFD heatsink overtemp
This code typically points to
  • Dirty heatsink
  • Poor airflow over VFD
  • Failed VFD cooling fan (if equipped)
  • High ambient temperature
Next checks to confirm
  1. Inspect VFD heatsink for debris/obstruction
  2. Verify airflow path
  3. Check ambient conditions
Escalation
Repeated occurrences escalate to 84-58 malfunction lockout.
Reset behavior
Retries after temperature drops; sustained fault leads to 84-58.
Urgent
Fix now
Need deeper detail?
Retrieve the subcode for this platform:
  1. From the main screen, touch Menu
  2. Touch and hold the Service icon for at least 10 seconds until it turns green
  3. Open Service Information
  4. Use View Diagnostics for the most recent fault's top three likely root causes
  5. Use Last 10 System Events for timestamped recent events
  6. Use Run/Fault History for resettable fault counters, cycle counters, and run times
Source
186CNV/284ANV service manual
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