When your Lennox XP25 heat pump displays error code 438, it typically indicates an inverter PFC input overcurrent issue, often triggered by refrigerant leaks, undercharge problems, or faulty … [Read more...]
Lennox XP25 Heat Pump Error Code 428: Inverter High Main Input Current Detected
When your Lennox XP25 heat pump displays error code 428, it's alerting you to a critical issue with the compressor communication, specifically an inverter high main input current. This could be due to … [Read more...]
