Units that have a disconnect box may need to be looked at too.ģ.
The power cut off to the unit - There may be fuses or breakers between the house circuit breakers and the condensing unit. Any of these components could cause the compressor to fail.Ģ. The compressor - The compressor is made up of a series of coils, and the pump that circulates the refrigerant. The air conditioner stops pushing out cool air.ġ. Do not put off getting your unit looked at when it starts to get noisy. Fan blade - This blade will loosen over time.
It pumps the refrigerant that cools the air.ģ. The compressor - Another component that wears out after a great deal of use is the compressor. Replacing the motor is less costly than replacing the unit.Ģ. The bearings that are used wear out over time. Fan motor - This is common on older units. Common Lennox Air Conditioner Issues The unit is loud.ġ. Whether you troubleshoot yourself or leave it to the professionals at Rescue Air Heating and Cooling, this handy guide is worth bookmarking. In summary older units indicate gross BTU capacity and newer units indicate net BTU capacity.Troubleshooting a Lennox air conditioner is actually much simpler than homeowners think. Older units would indicated the actual BTUs the unit could produce which would be above the BTUs the unit could supply after taking into account loss from motor heat and other factors. Newer units go by the 12,000 BTUs per ton rule when annotating the unit's size in the model number which indicates the BTUs the unit can provide to the living space. Unit size or capacity has always been indicated in the unit model number in some way. There are 12,000 BTUs (British Thermal Units) per ton of AC cooling. 17 tons or 2000 BTUs are needed to overcome motor heat and other factors and 2 tons or 24,000 BTUs are available for the living space. 42/12 = 3.5 Tons of cooling.Ī unit with a model number of HS10-261-1P lists the unit's capacity that it is capable of producing. The model number (M/N) can be located outside on the panel along with the serial number.Ī unit with a model number of 10ACB42-1P lists the unit's capacity that it provides to the living space. The size of your Lennox Air Conditioner can be determined from the model number of the unit.
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