Today I checked the function of the New York rooftop unit. Both the airflow and its performance was checked (low ambient checks). The existing thermostat wire has a short that is powering 2nd stage cooling as well as the common wire. Thank you, Jon Tech notes: Supply trunk: front 15x15”(1,300), (3) 10” flex runs, @300cfm (approx)/run=900cfm Rear 8x18”(800), (4) 10” flex runs, @ “ “ = 1,200 cfm, Damper opened in the rear Out 52, indoor temp 62, resting pressures 161 suc, 165 dis, 1st stage cooling, economizes normally, Econ removed, low side 101 (31.5), high side 333-421 (125+) rat 62, sat 40, 2nd stage constant voltage 18v Common, constant voltage 16v S.A.T 13.3k ohms, O.A.T. 14.9, RAT 13.6 (all are accurate), two fault blinks on this board indicate that there are no faults saved. Unit functions with the below the ceiling thermostat wire removed. A short exists without the T-stat wired in. Sat temp is a control feature to prevent low ambient operation and cycles withou