Yes Bob I do, no cool. What I think they did was perform hard reset. Now, that may have had to be done for a couple of reasons, unit sat unlevel and the safety shut off, or possible, cooling unit failure in infant stages, Lets assume it was the earlier option. At any rate, I believe , if my memory serves me correctly, turn on refer in a/c mode, remove the 12vdc leads, igniter lead, ac cord gas valve lines, then remove cover. Hook 12vdc wires back up, You will go to pin connector #15, it will be beside an open pin on 16 pin next to white wire, I believe, on the board, With 22awg wire stripped at both ends, one end on pin #15 the other to ground for 15-20 seconds, you will hear a click. Turn refer off, then back on, if NC gone, replace cover and reconnect wires. I understand you are taking to service center, but this info may help you at a later time. Could be other reasons for the NC code, the 2 listed is most common that I have ran accrossed. Good Luck. If you have a manual on refer, double check the procedure for resest.