You're experiencing an Inverter PFC fault on your Lennox XP25 heat pump, indicated by error code 431. It's a low-pressure lockout condition related to the Power Factor Correction system. You'll need to … [Read more...]
Lennox XP25 Heat Pump Error Code 427: Inverter DC Peak Fault Detected
When your Lennox XP25 heat pump displays error code 427, indicating an Inverter DC Peak Fault, it's a warning sign that requires immediate attention from an expert to diagnose and repair, as … [Read more...]
