You may be, or the unit itself may be short cycling just after shutdown. the unit needs about 5 minutes for the pressures to equalize. If the unit comes on too soon, blown fuses are usually the end result. If you have a round Honeywell t-stat, gold in color, you system should have a time delay added to eleminate this problem. Also, the wire connections on the 220vac both inside and out should be tight,...good connection.
I think that you will find that the problem is that the unit is comming back on just after shutdown. It's hard to see and it's really not your fault.
Ask the service tech. if there is a time delay anywhere in the system, and if not, to add one.
[This message has been edited by HOLLYWOOD (edited August 29, 2000).]