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 430: Compressor Startup Failure Detected
You're dealing with a compressor startup failure on your Lennox XP25 heat pump, indicated by error code 430. This error code requires immediate attention to troubleshoot and potentially repair or … [Read more...]
Lennox XP25 Heat Pump Error Code 429: Inverter DC Link Low Voltage Detected
You're experiencing an error code 429 on your Lennox XP25 heat pump, indicating an inverter DC link low voltage issue. This can be caused by low mains voltage, a faulty DC link capacitor, or an … [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...]
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...]
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