When your Lennox XP25 heat pump displays error code 437, it means the Heat Sink Temperature Sensor has failed, compromising your system's performance and potentially causing further damage if left … [Read more...]
Lennox XP25 Heat Pump Error Code 436: Inverter Heat Sink Overtemperature Detected
If you're seeing Error Code 436 on your Lennox XP25 heat pump, it means the inverter heat sink is overheating. This might happen during winterizing when the heat pump is working overtime. Poor … [Read more...]
Lennox XP25 Heat Pump Error Code 435: Inverter EEPROM Checksum Error Detected
Your Lennox XP25 heat pump's error code 435 indicates an inverter EEPROM checksum error, which can bring your entire system to a grinding halt. This error code points to a fault in the inverter's … [Read more...]
Lennox XP25 Heat Pump Error Code 434: Loss of Communication with Inverter
When you see error code 434 on your Lennox XP25 heat pump, it means a complete loss of communication with the inverter, disrupting the system's performance and ability to provide reliable heating and … [Read more...]
Lennox XP25 Heat Pump Error Code 433: Compressor Overcurrent – Phase Current Too High
When your Lennox heat pump model XP25 displays error code 433, indicating a compressor overcurrent with phase current too high, it's vital to take prompt action to prevent further damage to the … [Read more...]
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