If you get "Unit configuration loss" message after installing a replacement control board in a Commercial Self Contained unit.... Go into the configuration and configure the unit as a 50 ton Rooftop unit. Then get out of the configuration and get back in and change the configuration back to its original size and commercial self contained unit.
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.