Heat Repair - Unit not running right, huge pressure drop after orifice in heating mode. Most likely restriction. Non condensables also causing fluctuation in pressures. All other checks good. Steve is aware of issues and is coming out to repair. Filter replaced. 3/1 Steve returned and pumped down system, removed and cleaned orifice, removed and installed new filter drier. Pressure tested system, no leaks, pulled 500 micron vacuum on refrigerant lines and indoor coil.