ERR.184.04
Low Suction Pressure Heating Protection
This code typically points to
- Low charge
- EEV pump down
- Low-side restriction
- Pressure transducer calibration/failure
- Outdoor ambient below -10°F
- Outdoor coil iced up
- Low/no outdoor airflow
Next checks to confirm
- Check charge and low-side
- Inspect outdoor coil for ice
- Verify outdoor airflow
- Check ambient conditions
Escalation
5-minute soft lockout
Reset behavior
Soft lockout clears; repeated events escalate.
Urgent
Fix now