My Amana 4 ton 2 stage 16 SEER condenser shuts down and would not come back on by itself. The AC tech said it appeared the HP switch could be the cause after checking everything else. I cleaned the coils thoroughly. The unit is in a corner and those 2 sides were very dirty. I cleaned them thoroughly. Once it turns off after making temp it will not restart until I turn off the 24V to the circuit board. Repeat... It seems that something on the circuit board (or elsewhere) is resetting itself each time I turn off the 24V. The unit is about 11 years old and is in great shape. The AC tech came back and could not find the problem and suggesting the circuit board is the problem, or he said it may be a good idea to replace the entire condensing unit. The unit does not have contactors. Anyone experience this specific problem? Don't want to buy a new circuit board and find out the problem is still there. Would appreciate any suggestions.