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 426: Excessive Inverter Alarms Detected
When your Lennox XP25 heat pump displays Error Code 426, it signals excessive inverter alarms, pointing to a potential issue with the inverter controlling the compressor and fan motor. You'll need a … [Read more...]
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