HVAC Sales Master

Fault Code Lookup

HVAC Sales Master
ERR.184.10
SOV (switch-over valve) in Wrong Mode
This code typically points to
  • Switch-over valve is in heating mode while system is calling for cooling
  • Outdated outdoor VSPD software / thermostat software
  • SOV disconnected or broken wiring
Next checks to confirm
  1. Reprogram drive to latest outdoor-unit VSPD software
  2. Update thermostat software
  3. Check SOV wiring and connections to drive
Escalation
5-minute soft lockout
Reset behavior
Clears when mode/wiring/software issue corrected.
Urgent
Fix now
Deeper detail available
The manufacturer has pushed full per-code troubleshooting trees into the Trane Technician app. Use the app for subcode detail beyond what's shown here.
Source
Trane System Alert Guide p.41, public distributor-posted PDF
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