When you see error code 142 on your Lennox SL22KLV heat pump, it means the heat pump setting is incorrect. You'll need to check your thermostat settings, ensuring they match the current season and … [Read more...]
Lennox SL22KLV Heat Pump Error Code139: Short Cycling Detected (Rapid On/Off Cycling)
If you're encountering error code 139 on your Lennox heat pump model SL22KLV, indicating short cycling or unit cycling too quickly, it's likely due to a range of possible causes including a clogged air … [Read more...]
Lennox SL22KLV Heat Pump Error Code 137: Incorrect Voltage Supply Detected
If your SL22KLV Lennox heat pump displays error code 137, it's likely due to an incorrect voltage supply, which can prevent the furnace from functioning properly. This common issue can be resolved by … [Read more...]
Lennox SL22KLV Heat Pump Error Code 135: Low System Refrigerant Charge Detected
When your Lennox heat pump model SL22KLV flashes code 135, it means you've got a low system charge issue. This is likely due to incorrect installation, maintenance, or a refrigerant leak. You'll need … [Read more...]
Lennox SL22KLV Heat Pump Error Code 121: Low Pressure Switch Open Detected
When your Lennox heat pump model SL22KLV displays Error Code 121, it indicates a low pressure switch open fault that requires immediate attention to prevent further damage. You'll need to inspect the … [Read more...]
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