Removed previous condensate line for tankless unit that was ran using half inch pex with a brass adapter that broke due to freezing/improper material. Ran new line using 3/4 cpvc to help prevent freezing by sizing up. Also flushed tankless unit which I would recommend doing annually from this point forward. Turned unit back on and everything is working properly. Will reach out to Rheem today for a warranty replacement of the pump inside of the unit that’s failed. Once I get shipping info I’ll have the office schedule work to be completed.