Pump trips GFCI, test/conclusion, replace or upgrade?

detlion1643

Well-known member
May 14, 2020
79
Erie, PA
Well, it finally happened. I didn't actually expect my current pump to last as long as it did. I bought an Xtremepower dual speed 1.5HP pump when we first put up our pool. It's possibly the cheapest no name brand pump but I will say it got us through and worked extremely well, money well worth it. That is until this morning.

Now, my current setup is breaker box -> gfci outlet -> timer -> pump/salt cell. I finally fixed up a few leaks and o-rings in my plumbing and was filling the pool yesterday. This morning I turned the timer to "on" and turned the pump to "low" and nothing happened. I immediately noticed that the salt cell didn't have power either. The GFCI outlet was tripped, so I reset it and immediately it tripped again. I opened the connection area of the pump and pulled off the red (positive) wire, plugged the timer back into the gfci outlet and turned the timer on, and the salt cell was getting power. Turned the timer off again, plug the red (positive) back into the pump, plug the timer back into the gfci outlet, and immediately tripped again (even with the timer turned off). Super curious how this trips the gfci outlet when the timer (which the power flows through) is turned off?

As a quick remedy I purchased a new wire whip and replaced the conduit and wire from timer to pump. Same thing, trips immediately even with timer off. Therefore, my conclusion is the pump is shot. I have not pulled it off the pad and opened it up yet. But I will be doing this in hopes that I can make a quick/cheap repair and keep it as a backup. FYI: I did not take the pump inside during winters, I unscrewed all the unions and connections to pump/filter and left them on the pad. I also noted water in the conduit from timer to pump as the conduit was never properly screwed into the pump opening. I can only assume snow/water got inside the pump and miraculously it lasted as many years as it did.

I already know, I should've done better about this. I can make excuses, perhaps it was a "let's test it and fix it later" and later never comes, but that doesn't fix the problem now.

The 2 speed pump that died successfully activated the salt cell on the low speed until the filter became dirty enough to impede the flow of water enough. Once the filter has been cleaned the low speed activated the salt cell again.

Now, the same pump is still pretty cheap, around $150ish. I checked out a few cheaper variable speed pumps that can have 3-4 speed selections, with an Xtremepower variable actually having some adjustable ranges. I'm not totally turned off the brand. True variable speed pumps are unfortunately out of my budget (have to recoup vacation money). Is a variable speed pump going to make that much difference to me, or is a 2 speed still the best option since the low speed already worked best for my situation? I'd rather not spend more than necessary, but if an upgrade is worth it I'll consider spending the extra.

To note, I have a couple solar panels but the connections are leaking as o-rings went missing and the connector knobs broke off. They aren't connected and the low speed barely worked to push the water through them. I'm undecided about fixing/replacing them, not sure they made much of a difference.
 
A VS pump is not going to give you any savings over a 2-speed pump running on LOW.
 
I'm putting some more information here in case it might anyone else in the future, or possibly me again.

I pulled the pump from the pad and set it aside. I was able turn the impeller by hand, so I figured I would hook up with positive/negative/ground without it plumbed in and see if it trips the gfci outlet. It did NOT trip it and the pump turned on for a couple seconds before I unplugged it.

Knowing that the pump actually does work I put it back on the pad, hooked the plumbing up again, opened the skimmer/return valves, wired the pump, and plugged in the pump. Immediate tripping of the gfci again, aagghh! My conclusion is when filled with water there is an issue. Possible o-rings or the seal assembly.

So I unhooked the pump, removed it from the plumbing, and brought it to the garage. It took a bit to figure out how to open it up but I got it done. I have ordered 2 each of the seal assembly and 2 o-rings I need. It took quite a bit to find them, most places that had the part number were out of stock and XtremepowerUS website shows part numbers and "stocked" but I couldn't find the actual parts and how to order them. I ended up buying through Paypal (protection) from some website using Shopify, so hopefully it's legit and I get the parts.

Once the parts arrive I can replace and reassemble the pump and store it for backup. I just hope that in the event I do need to use it that this is the actual solution to the tripping problem. Maybe I should replace, reassemble, and test it before installing the replacement pump I bought for peace of mind.