System Diagnosis
Low Pressure Switch Open. The low pressure switch is open (Cooling/Heat Pump).
Lennox | Numeric Codes (E-Codes)
Error Code E223
Troubleshooting guide for the Lennox Numeric Codes (E-Codes) system fault E223.
Disclaimer: This information is for general reference. Error codes can vary by model and production year. Always refer to your machine's specific manual and the information printed on the unit itself.
Potential Causes & Solutions
- Low refrigerant, bad switch, restricted airflow.
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