I've got a Sureflo Extreme Series 5.7 water pump in my rig. The other morning, I noticed the pump was running, but no water faucets were on nor was any water leaking anywhere. The pump will not turn off now unless the power switch at the wall is turned off.Any ideas on what the problem might be? This pump has not been used alot and I'm hoping I don't have to replace it as they cost $300+. I sent an email to sureflo, but have not heard back yet.This pump has 5 diaphrams and I'm wondering if a crack or leak has occurred and it won't pressure up? If not that, then maybe the micro- processor is defective? Any ideas or experience here? Thanks

The processor and limit switch are fine or it would run until it hydraulics and stalls. It probably sucked up a small piece of debris which is now stuck in the diaphragm (there's only one diaphragm assembly). When it does this it leaks pressure internally so it never builds enough pressure to shut down. Take the head apart and rinse the components off with water. Then reassemble and test - I'm betting all will be fine. (This has happened to me a couple of times.)

ScottG wrote:The processor and limit switch are fine or it would run until it hydraulics and stalls. It probably sucked up a small piece of debris which is now stuck in the diaphragm (there's only one diaphragm assembly). When it does this it leaks pressure internally so it never builds enough pressure to shut down. Take the head apart and rinse the components off with water. Then reassemble and test - I'm betting all will be fine. (This has happened to me a couple of times.)Great. Thanks for the advice! I'm leaving for home in a couple of days. I'll check that and get back with you. Thanks again.

This should answer your questionSureflow pump

VoodooMedicineMan wrote:This should answer your questionSureflow pumpThat post was for a pump that wouldn't run. The OP has the exact opposite problem.

that post for a pump that kept running but would not supply water

Sureflo 5,7 Water Pump | Good Sam Community

ScottG
Nomad
Jul 09, 2013
VoodooMedicineMan wrote:
This should answer your question

Sureflow pump

That post was for a pump that wouldn't run. The OP has the exact opposite problem.
VoodooMedicineM
Explorer
Jul 09, 2013
This should answer your question

Sureflow pump
MSGTRETIREDCSP
Explorer
Jul 09, 2013
ScottG wrote:
The processor and limit switch are fine or it would run until it hydraulics and stalls. It probably sucked up a small piece of debris which is now stuck in the diaphragm (there's only one diaphragm assembly). When it does this it leaks pressure internally so it never builds enough pressure to shut down.
Take the head apart and rinse the components off with water. Then reassemble and test - I'm betting all will be fine. (This has happened to me a couple of times.)

Great. Thanks for the advice! I'm leaving for home in a couple of days. I'll check that and get back with you. Thanks again.
ScottG
Nomad
Jul 09, 2013
The processor and limit switch are fine or it would run until it hydraulics and stalls. It probably sucked up a small piece of debris which is now stuck in the diaphragm (there's only one diaphragm assembly). When it does this it leaks pressure internally so it never builds enough pressure to shut down.
Take the head apart and rinse the components off with water. Then reassemble and test - I'm betting all will be fine. (This has happened to me a couple of times.)

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