I don't know if this problem has been posted, I couldn't find it. Here is my problem. I have had my Pentair Intelliflo SV+SVRS pump for six years now and this year has been horrible. My pump shuts off 3 or 4 times a day for no apparent reason. Sometimes it will run for a week with no issues then I'll get issues daily (when it shuts down it says clear drain blockage). It is not blocked. My pool installer told me to change the sand in the filter however that hasn't changed the issues with the pump just shutting down. I notice it will shut down more often when it switches to the slower speed setting. Any help would be appreciated.