Hi folks. My Hayward SP3400VSP runs constantly on the following schedule programmed by previous owners:
Now sometimes, like this morning, I'll go out early to add chemicals or do some brushing while the pump is still running on low flow, so I'll press the "Speed 2" button on my pump to get some better circulation during those tasks. On my pump, hitting "Speed 2" once runs the pump at 2400rpm for 30 minutes before returning to programmed schedule. This cycle runs as expected, and then returns to 1500rpm once done.
Now the issue is, I have noticed more than once that at the end of the 30 minute 'speed button' cycle, the pump (unexpectedly?) goes through another priming cycle (8 minutes at max speed) before returning to scheduled operation.
Questions:
Why does it do this? Is this expected behavior? I don't see anything about this in the manual. It just mentions that additional speed button presses add more time, nothing about extra priming cycles. Is this an indication the pump thinks it has lost prime and therefore starts a new priming cycle on its own? (when this happens, it looks like there is still water in the pump pot, so I'm not sure it actually lost prime?) If "yes", why would happen specifically at the end of a "speed button" cycle, and not at other times during scheduled operation? This only seems to happen when I hit the speed button when coming out of low flow (1500rpm) to some higher speed, and then returning back to low flow.
- 10:30P-9:30A: 1500 rpm (low flow overnight)
- 9:30A-10:30P: 2900 rpm (normal flow for daytime)
Now sometimes, like this morning, I'll go out early to add chemicals or do some brushing while the pump is still running on low flow, so I'll press the "Speed 2" button on my pump to get some better circulation during those tasks. On my pump, hitting "Speed 2" once runs the pump at 2400rpm for 30 minutes before returning to programmed schedule. This cycle runs as expected, and then returns to 1500rpm once done.
Now the issue is, I have noticed more than once that at the end of the 30 minute 'speed button' cycle, the pump (unexpectedly?) goes through another priming cycle (8 minutes at max speed) before returning to scheduled operation.
Questions:
Why does it do this? Is this expected behavior? I don't see anything about this in the manual. It just mentions that additional speed button presses add more time, nothing about extra priming cycles. Is this an indication the pump thinks it has lost prime and therefore starts a new priming cycle on its own? (when this happens, it looks like there is still water in the pump pot, so I'm not sure it actually lost prime?) If "yes", why would happen specifically at the end of a "speed button" cycle, and not at other times during scheduled operation? This only seems to happen when I hit the speed button when coming out of low flow (1500rpm) to some higher speed, and then returning back to low flow.