I've got a Morgan spa that is about 8 or 9 years old (I think -- it came with my house). I run the spa on the 24-hour pump timer, set to run continuously in the afternoon/evening for about 10 hours and the heater timer is disabled.

I recently had to replace the timer breaker, because it would no longer switch on. After I replaced the timer, it started cycling power on and off (on for about a minute, off for about 15 minutes) during the time when the spa is supposed to be off (it runs fine when it is supposed to be on). I replaced the timer breaker again, but the new breaker has the same problem. To troubleshoot, I disconnected the bypass switch for the timer and the cycling still happens. I also disconnected the power from the timer contacts and put a meter to see if the contacts were closing while it was running, but I didn't see it happen. I'm guessing there is something else causing this, but can't isolate it. Any ideas?

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