HVAC Sales Master

Fault Code Lookup

HVAC Sales Master
ERR.184.03
Low Suction Pressure Cooling Protection
This code typically points to
  • Low charge
  • EEV pump down
  • Low-side restriction
  • Pressure transducer out of calibration or failure
Next checks to confirm
  1. Check charge
  2. Check for low-side restriction/pump-down
  3. Verify suction pressure transducer
Escalation
5-minute soft lockout
Reset behavior
Soft lockout clears after timer; repeated 184.xx events can escalate to hard lockout.
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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