Snap: 1632 Saloon stuffy. ~~~~~ Snap: 1632 Saloon stuffy. CE: 1632 check no ac fault but saloon ac warm. Temp 28.1c.  1632 Checked no Fault Code. Measured freon pressure when not running OK, no low freon detected, insulation test all 4 aircons OK.    Measure freon when train Aux-On found #1632 A/C 1-1 LP=120psi, HP=120psi. A/C 2-1 LP=120psi, HP=160psi. Found both aircon no heat exchange. Measure current A/C 1-1 at 7.6A, A/C 2-1 at 6.8A. Notification 2608932 (#1632 A/c 1-1) and 2608936 (#1632 A/c 2-1) raised for CCU changeout.  Aliff/Daniel/Chan SW 45461