We needed to replace a Lennox air handler which was in the Ceiling with a smaller unit which would fit in a closet. A Lennox would not fit so we had a Goodman installed. Everything seemed fine except the installers were not familiar with the lennox 2 zone. They seemed to have connected up the system incorrectedly as the replaced unit will not turn on the compressor and the compressor does not respond to that aur handler by switiching to high speed. In fact the air handler is permanently on and only cools when the second air handler which was not replaced is on.
Obviously the Goodman unit was wired up incorrectly. Any ideas?