As always you bring an insightful and very welcome perspective. Although trained as an engineer, I spent my career doing anything *but* engineering....but may dust off the old soldering iron and see what damage I can do.
Where would you start? Power down everything and inspect the control board? Do I have to remove the unit to get to the control board? (or is there an access panel?). One of my SCS thermostats has already been replaced effectively negating the two stage aspect. Should I start looking for an SCS thermostat or is that a lost cause?
As a last resort, my brother has done some research and says that coleman is making basement units again with the new freon. Around 1200$ per unit.
Thanks again for the help!
Cheers,
bill
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