Hi Roger,
My 6100 also sets off the alarm. A couple of times, the pump did start up, but most of the time just sets the alarm. I tried different Everything is clean. By swapping parts, I have determined that the driver is the cause. The driver is a 7240.26 with a manufacture date of 03/12/02.
I guess I let it sit too long. The pump worked fine when I put it in storage. Took it back out after a couple of years and now get the alarm. I don't see any corrosion or fried components on the board in the driver.
Any suggestions? I thought these were no longer repairable.
Bob