Do you have a question about the Carrier 50QD and is the answer not in the manual?
Guide for connecting field power supply and control wiring.
Instructions for cleaning the indoor coil, including panel removal.
Procedures for determining and adding refrigerant charge.
Steps for evacuating and weighing in the specified refrigerant amount.
Using charts to add refrigerant for low charge cooling conditions.
Checking operating charge during heating for low charge situations.