TC feedback cab air-con was not working.Unable to reset. Cab was warm. ~~~~~ 3720 TC feedback cab A/C not working Unable to reset. Cab was warm. CE: 3720 found ON/OFf switch faulty, Temp at 29.7C Unable to on.  63720 cab A/C panel replaced. Tested operation - OK. Fazly/Farid/Raja 45068