What we did
A mini split system at this Paint Lick home was not working right, and it was showing error codes E500 and U200. Our job was to track down what was behind those codes.
We found the condenser fan loose on its shaft and reattached it securely. When we started the system again, it ran smoothly with no error codes. It did indicate low refrigerant levels, though, so the next step is to weigh the refrigerant and make sure the charge is where it needs to be.
Error codes on a mini split point toward a problem area, but they do not always tell the whole story. A loose condenser fan cannot move air across the outdoor coil the way it should, and in this case the codes cleared once the fan was secured. That left the low refrigerant indication as the next item to address. Weighing the refrigerant is the accurate way to check a mini split charge, since these systems are sensitive to small differences. Getting both the airflow and the charge right helps the unit handle Kentucky summers without struggling.
