These are related to low air flow. Either dirty filter, dirty indoor coil, blocked returns, blower malfunction etc...
The end result is not enough air is being moved through the furnace for heating or air conditioning.
would like further clarification?
I can describe each code if you like.
If this is a new install I would consider the duct work is too small or incorrect installation. It is very simple...you do not have enough air flow.
You have received correct information, but this is also available to you on the blower door of the furnace.
I would normally go to extremes to help a customer, but your demeanor dictates that I will opt out. If you have frustrations I would take it up with the installing contractor instead of venting towards a source you asked for help.
I feel for your situation, but will not take part in an interaction with such attitude.
I wish you well and will opt out now.