Ok, so hopefully this makes sense.
I have a Jandy FloPro FHPM 2 speed pump http://www.zodiacpoolsystems.com/Pro...ps/FloPro.aspx , wired at 220V with a Intermatic P1353ME Timer, this one http://intermatic.com/Products/Pool_...s/P1353ME.aspx
My PB told me I ALWAYS have to turn OFF the pump before I switch speeds, ok easy enough.
EXCEPT - what happened today.
To give a bit more info...Circuit 1 is the HIGH sped and Circuit 2 is the low speed, (3 is the light if it matters).
I decided to take a quick swim after work and brush the walls a bit to clean some of the fine dirt...manually turned the pump on HIGH. About 5 minutes later, MASSIVE BUZZ and the pump died. OH BOY, not good, what the heck.
Ran over to timer and dang...I forgot that I had the autotimer set to kick on the low speed pump at 6 PM, so what happened was the pump was running on HIGH, then the timer tried to turn it on LOW and WHAM - it froze or at least sounded like it did.
I tried to turn both off and fired back up the low and nothing....so I waited.
Tried again and the low came on - then I could turn on / off like usual, etc. So it seemed that no massive damage, unless I shorted the live of something.
Bottom line, this just does NOT SEEM RIGHT to me ?? Especially when I see other posts about switching low/high while on the fly.
Any help is appreciated.