Water not flowing out of pump

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'flow sensor; 'timer', 'sleep indicator'? Water Bed? Dehimidifier? Hot tub? AC Unit? Water Cooled PC? Well Pump? Sump Pump?

It is all guesswork.

Without knowing what heater manufacturer or model, or whether this is a burner style furnace or heat pump, I would surmise a guess that you have a flow issue, a restriction in your water flow. Most water flow issues are corrected by cleaning the filter.
many people who are not in the know, or don't understand these type of things, always ask what does the filter have to do with my heater?
heaters need to have the proper amount of the water flow through them for them to fire safely and efficiently. When that water flow is reduced or restricted there is a safety sensor that senses improper water-flow, and will not allow that heater to operate. Remove the restriction, and that specific sensor that senses for proper waterflow, will allow the heater to operate.

First things first, never let your lower unit lube be low. It should be changed every 100 hours of use, or at least checked after big trips with prolonged use. If it is low, but does not look grey, milky or burnt, then just add from bottom plug until it comes out of the top plug. Now, the water pump is completely separate from your oil situation. Whether or not your motor has what is called a "pee stream" does not necessarily mean you have a bad water pump. Often times the water flow indicator, or "pee stream" on your engine will be plugged, which is okay, it\'s just an indicator. However, if you were to test run your engine on a garden hose at home, and there was no flow out of the propeller hub, which is actually where the exhaust flow exits as well as your cooling water, then you\'ll need a new water pump impeller and/or possibly a water pump kit. This should be around 40 to 75 dollars in parts, and about 1.5 hrs in labor if you were to take it to a shop.

Low flow is an indication of not enough water flowing through the system.
Check the flow by removing the filter from the spa and see what that does for you. Many times even brand new filters have enough tiny fibers from the manufacturing process to not let enough water flow through to operate a spa.
If you remove the filter and it still has a flow issue then make sure the gate valves on either side of the pump are completely open and no restrictions.
Also make sure the water is full in the spa.


Rod
US Parts Center
888-521-6183

The problem is that the flow switch for your water heater is indicating no flow. Therefore your water heater will not operate. Without proper water flow your heater will burn up. Check that your valves are open. Check that your pump is running. Check that your filters are properly installed and not restricting flow. Check the wiring to your flow switch and make sure the flow switch operating properly (i.e. put a ohm meter across the contacts and see if you have continuity when the switch closes).

Code 90 indicates that the water flow rate is not high enough for the system to operate properly. This is measured by a white plastic piece hinged from the top of the pipe. As water flows by the plastic piece gets pushed back and up against the top of the pipe so that it touches a sensor. A couple of solutions are as follows or a combination of these:
1) make sure that all pipes and filters are clean and clear. Leaves or other stuff will slow the water flow.
2) check that the clorinator is clear of any blockage or dirt.
3) unscrew the flow meter and pull out to check that the hinge is clean and the plastic piece moves freely.
4) when you put the flow meter back in place try turning it ever so slightly which might make a difference. This has worked sometimes for me.
5) make sure that the clorinator is level. I tilted my unit so that the inlet side is slightly higher than the outlet as an experiment and this works as well since I was trying to get the flow valve to travel less distance.(it's a geometry issue)
6) make sure there is no air stuck in the lines. Try lifting the pipes/tubes to move air out and make sure you bleed your pump to ensure that it is full of water and there is no air trapped here that would reduce flow.
7) try taking any nozzle off the hose going into the pool. These may slow the flow coming into the pool and cause back pressure in the pipes.
8) I have a solar panel with a bypass valve. The clorinator only works when I run the water using the bypass valve so that no water runs through the solar panel. Try running all water only through clorinator with no other devices in line to slow the flow or produce any restrictions.
9) Try running the clorinator but take out the pump filter as an experiment. The filter may need replacing. Taking the filter out should tell you if this is the case if the clorinator works without the filter in place.
10) As a last resort check the flow rate requirements for the clorinator and on the pump you have. The pump may be undersized.

youll have to keep renewing the filter,or ask the people you bought it off

Water Flow should be like this
Pool Water-

HI
Its your flow meter. If you have a restriction in the intake line the message will not go away. There is a flow meter inside the machine that measures water flow. If the flow meter does not spin when the pump is running, the computer thinks that the pump is not primed. Coffee grounds will get into the intake and restrict the flow meter. If you get a restriction in the water intake (below the water tank, on the machine) the pump may run and water comes out, but the flow meter does not create the jet of water to spin the turbine wheel to send impulses to the computer. You get the ventilate message.
You need to take the flow meter apart and clean it or replace it.

This can happen if air gets inside the suction line. Run the pump for 2 minutes (not more).