Performed QA on Single Head Ductless unit. Homeowner mentioned that it worked great except yesterday and today it did not warm the room up in the morning. Went through system and ran in heating and cooling modes. Checked wiring and cleaned air filters. Poured water through condensation drain to make sure it was draining. Reviewed Remote control operation with homeowner. Found that where she keeps the controller the signal does not get to the indoor unit so it is not actually changing the temperature. Showed her how to use the controller and that the indoor unit will beep anytime a change is made to indicate is received the signal. System is operating to standards at this time. Completed checklist form in system. No additional follow up needed.