Incomplete: 2 systems worked on DS Unit: Trane Gas Package unit. Came to install ecobee Tstat and add 1lb of 410a. Installed Tstat and setup on customers to phone and cycled system. In the heat mode was going to add refrigerant due to outdoor temp. System tripped out on low pressure but extremely high pressure. Found filter, condenser coil and evaporator coil stopped up. Cleaned coils and replaced filter. System still dropped on low. Switched to cool mode and system ran great with pressures looking great. Need to order new Condenser TXV.