Service Mechanic Charlie was excellent and knowledgeable. Troubleshooting problems and made necessary corrective repairs. Note: my first call for emergency service May 6th ( off hours) was unacceptable. No one responded to my request for service. Hart answering service took my call for service. I had to call back the next day Saturday May 7th, 2022. Customer Service representative dispatched service mechanic Charlie, who responded to make repairs.