HVAC & Air Conditioning
E03: Low pressure or refrigerant loss protection
Trane XR-14
Safe preliminary checks permitted
Documented meaning
Suction pressure fell below the protection threshold.
Model variants covered: see the model record
Documented possible causes
- · Refrigerant loss
- · Restricted expansion device
- · Evaporator airflow restricted
Safe preliminary checks
- · Clean the accessible indoor filter
Professional service required
- · Clean the accessible indoor filter
- · Record the code
- · professional_only
Stop and call a professional if you see
- · Burning smell, smoke, water on live parts or a tripped protective device
- · Unusual noise, vibration or a refrigerant leak