Hi all. We are getting a yellow/amber comfort alert flash code 4 (locked rotor) on our split 2-ton WF system. Readings taken in second stage: EWT 76.1 f LWT 86.3 f Pressure delta is 2.7 (33.7-31.0) I calculated 6.3 gpm using the above figures and the unit running at about 91% of spec heat of rejection. System was installed 5/2009. We had one other unexplained (I didn't know to check comfort alert then) lockout in 12/2009 (I think) in heating mode. System has run great otherwise. Thoughts?