You're facing a low pressure switch open error on your Lennox XP25 heat pump, indicated by error code 452. This error typically occurs during winterizing or air conditioning modes and signifies a … [Read more...]
Lennox XP25 Heat Pump Error Code 445: Low Compressor Discharge Temperature Detected
You've noticed your Lennox heat pump, model XP25, is displaying error code 445 - a low discharge temperature issue that can't be ignored. This error affects the system's overall efficiency and … [Read more...]
Lennox XP25 Heat Pump Error Code 442: Compressor Top Cap Switch Lockout Triggered
When your Lennox XP25 heat pump displays error code 442, it's indicating a compressor top cap switch strikes lockout, a critical system fault that requires prompt attention to prevent further damage … [Read more...]
Lennox XP25 Heat Pump Error Code 440: Compressor Slowdown Due to High Heat Sink Temperature
When your Lennox XP25 heat pump displays error code 440, it means the compressor has slowed down due to a high heat sink temperature. This could be caused by refrigerant leaks, clogged air filters, … [Read more...]
Lennox XP25 Heat Pump Error Code 439: Compressor Slowdown Due to High Input Current
When your Lennox heat pump model XP25 displays error code 439, it means the compressor is slowing down due to high input current. This can lead to reduced cooling or heating capacity and potentially … [Read more...]
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