SHURflo Diafram Pumps Model # 8050-204-133

[lazy grady]

I'm confused. What is it you are trying to fix?

The pump that is running that shuts off when you pull the fuse is not on a switch (well battery switch). It will turn off when the pump primes and pressurizes the shower water line. If you got water in the shower handle and it still doesn't shut off then the switch inside the pump is bad.

8/4/24 Both Fresh water pumps continuously run whether the switch at the helm is "on or off". They will not turn off unless I pull the "auto type fuse" on the fuse block in the cabin. No water comes out of the faucet in the cabin lavatory or the gunwall shower or hand faucet.

 

[Hookup1]

8/4/24 Both Fresh water pumps continuously run whether the switch at the helm is "on or off". They will not turn off unless I pull the "auto type fuse" on the fuse block in the cabin. No water comes out of the faucet in the cabin lavatory or the gunwall shower or hand faucet.

Both pumps turn off when you pull the one fuse? What is the wire color of the wire to the fuse? How is the fuse labeled?
water pressure shower. --- orange/red
water pressure pump --- orange/blue

Why don't you just try to get the pump to pump water!

 

[lazy grady]

Dennis apparently this model has two freshwater pumps. Go figure but that is what the owners manual wirelist indicates. One is in the switch panel and one is on a fuse. Also shower sump pump is fused. My guess is the two fused pumps associated with the shower are alway on unless you turn the battery switch off.

The dash accessory water pressure switch controls the general fresh water in the boat (second pump). This is the only pump and switch I have on my boat.

8/4/24 Went to the boat. Opened the helm switch panel. Located the fuse (black push button terminals) beside the water pressure switch. Unhooked the fuse box terminal from the water pressure switch box then rebooked it. Switch began to work, cutting the 2 fresh water pumps on and off. Still no water.

 

[Hookup1]

8/4/24 Went to the boat. Opened the helm switch panel. Located the fuse (black push button terminals) beside the water pressure switch. Unhooked the fuse box terminal from the water pressure switch box then rebooked it. Switch began to work, cutting the 2 fresh water pumps on and off. Still no water.

That is not a fuse - it's a circuit breaker. That switch on the accessory panel controls the general fresh water pump. Anyway - you need to work on the pump to get water pumping.

 

[lazy grady]

That is not a fuse - it's a circuit breaker. That switch on the accessory panel controls the general fresh water pump. Anyway - you need to work on the pump to get water pumping.

8/4/24 Plan to work on the pump issue. The black, is it the circuit breaker? If so, it only worked when I disconnected the terminal on the box.

 

[Hookup1]

8/4/24 Plan to work on the pump issue. The black, is it the circuit breaker? If so, it only worked when I disconnected the terminal on the box.

I have no idea what you are talking about. Good luck!

 

[Sardinia306Canyon]

8/4/24 Plan to work on the pump issue. The black, is it the circuit breaker? If so, it only worked when I disconnected the terminal on the box.

Honestly i don't understand either what you wrote.

However, it has nothing to do with your problem.

When the pumps are running and no water comes out the faucets, shower or wash down then your pumps will run forever because the pump can not build up pressure and the built in pressure switch don't switch the pump off as no pressure is there.
In this case you should make sure:
the water tank is full and pump could suck water
If watertank/s are full then check if there is a air leak or lines are clogged
If water hoses to pumps seem to be ok fine the most likely the membrane inside the pump is damaged, they can be replaced

To achieve the above you can either:

• Disconnect the water inlet of the pump and suck on it, by mouth, by another pump, with a old primer bulb, etc to check if water can be primed from water tank. Using a transparent piece of hose you would see bubbles passing what means that there is a air leak.
• buy a new pump and install it (the most simple)
• pull the pump and check with a 12V battery and bucket with water if she works as supposed
• If pulled pump is not pumping on a bucket then open the pump head to verify the membrane, sometimes the flappers get dislodged or get new membranes and just install them.

There is nothing wrong with your electrical system! The pump runs forever as she don't have water inside to build up pressure.

Chris