Question about Grundfos Comfort System Recirculator 595916

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Pump gets very hot. Water not

Pump gets very hot. Water not circulating. Cold water at taps. Impeller problems?

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That would be my guess. If water is not circulating then that points to impeller problem

Posted on Aug 19, 2010

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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SOURCE: pump gets very hot. Water not

Yep thats what it sounds like

Posted on Mar 24, 2010

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1 Answer

What would cause a circulator failure?


I am going to assume the circulator pump is on a hot water circulation loop. Turning the water back on could have stirred up the sediment that has collected in the bottom of the water heater. This could clog up and possibly ruin the impeller. Running for an extended period without circulating water can overheat and damage the pump also. It is a good idea to hook a hose to the water heater drain and flush out the sediment periodically. Hope this helps.

Jan 18, 2014 | Bell & Gossett 103252LF NBF-22 Circulator...

1 Answer

My VW POLO 1.6 clasic keeps overheating I have removed the thermostat no improvement I have replaced the thermostat top rad pipe hot bottom rad hose cold water not circulation replaced radiator still no...


Have you changed the water pump - if not, that could be it. Typically cold lower hoses imply water pump impeller not turning.
That would definitely be my next move.
Hope this helps and thanks for using Fixya!!

Nov 28, 2013 | 2000-08 Volkswagen Polo 9w Muranorot Pearl...

1 Answer

Cold water from tap is not cold


With circulating system, you wait for cold water to arrive instead of wait for hot to arrive
Turn pump off when you want cold water
http://waterheatertimer.org/Water-heater-recirculation-system.html
http://waterheatertimer.org/Crossover.html

Gene

Nov 10, 2013 | Grundfos Comfort System Recirculator ...

1 Answer

I have a kitchen aid dishwasher KuDR01TJBLO noisy when draining


see this causes and fix it. God bless you
Drain Pump If the dishwasher is loud during operation, the drain pump might be defective or might have some debris in it. This is a common problem.

Circulation Pump If the dishwasher is loud during operation, and the noise is a continuous drone similar in speed to the circulation pump sound, it's likely that the circulation pump motor bearings have failed. Once this happens the circulation pump will have to be replaced, the bearings are not repairable.

Drain Impeller If the dishwasher is loud during operation, the drain impeller might be broken, or there might be debris in the pump. Generally, to gain access to the pump the top of the pump housing will have to be removed.

Pump and Motor Assembly If the dishwasher is loud the motor bearings, drain impeller or wash impeller might have worn out. All three of these components are part of the pump and motor assembly. It may be possible to replace one of the impellers, but the motor bearings cannot be repaired. In that case the pump and motor assembly will need to be replaced.

Wash Impeller The wash impeller is a small, plastic blade. The motor spins the impeller forcing water through the spray arms to clean the dishes. If one or more blades has broken off of the impeller the dishwasher is loud. The impeller can also scrape against the pump housing if it is damaged, warped or bent.

Circulation and Drain Pump Motor If the dishwasher is loud during operation, and the noise is a continuous drone similar in speed to the motor sound, it's likely that the circulation and drain pump motor bearings have failed. Once this happens the motor will have to be replaced, the bearings are not repairable.

Water Inlet Valve The water inlet valve is an electrically controlled water valve. When it is new, the water inlet valve is very quiet. Over time, the diaphragm inside the valve deteriorates and deforms. This deformation interacts with the water rushing in and can cause a loud vibration, buzzing, squealing or other noises. If the dishwasher is loud during the filling cycle, replacing the water inlet valve may solve the problem.

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Sep 28, 2012 | KitchenAid Dishwashers

2 Answers

01 lincoln ls starts over heating but i turn my heater on and it returns to normal temp


Have the coolant level checked. The overflow for the Radator which is usally a white container marked coolant check that to see if there is any coolant in there. There should be some with a cold or hot check level. DO NOT REMOVE RADATOR CAP IF HOT ENGINE...

Sep 06, 2012 | 2001 Lincoln LS

1 Answer

I cannot figure out why my hot water no longer gets hot. I unplugged my timer 3 years ago and never had a problem. Now, no hot water unless timer is on and circulating.


Best solution is to remove the circulation-system crossover located under sink and see if problem is solved.
After removing crossover piece, try hot water tap.
Another way to check if this is the problem: Turn off cold water shut-off located above water heater. No need to turn off power or gas to water heater. Now, no water should flow when you turn on hot water tap because hot is turned off.
Open hot water side of double handled faucet. If water still comes out the hot side, then crossover is the problem.

After removing Taco crossover, you can still have the problem if a single handled faucet has the same type of crossover issue.
Repeat test to see if water comes out of hot side when water to water heater is shut off.
If water still comes out of hot side, then put ear against each single handled faucet and see which one has sound of moving water. That will narrow down the suspects.

Mar 27, 2011 | Taco 1/2" 006 BC4-TAC Circulator Pump/...

1 Answer

Overheating: 1999 bmw 323i m series 2.5 ..Installed: new water pump , thermostat. radiator,new Water Reservoir, cap.. hose on top side hot , lower hose cold even when engine is hot..no water circulating at...


the water pump and thermostat should have solved it. an air pocket can cause that but usually not to that degree.

don't get one of those cheap *** plastic impeller water pump for sissies. Get the metal impeller one. get a cool running thermostat and drill two 3/16" holes in it 180 degreess from each other. you may have installed the t-stat backwards.

Jun 03, 2010 | 1999 BMW 323 Series

1 Answer

Hi! My hot water taps from the wash hand basin and mixer bath has low pressure. I`ve got a combi boiler in the first floor. Can I install a single impeller pump connected from the hot water outlet from the...


In a word no. Combi boilers work on balanced pressure.ie the mains cold supply to the boiler should be around 1 bar minimum which would give a hot water pressure of the same 1 bar. Assuming the cold water pressure is fine, it sounds like you have a restricted flow on the hot side. If you live in an area with water problems the hot water systems pipework calcify over time effectively reducing water flow. Unless any flexi hoses are kinked, check if there are any filters in the appliances that may be blocked.Also check all valves are fully open and if possible check if there are any restrictions at the valves. Failing all that and the taps are in good order it is possible to fit a pump before the boiler but this may only be a temporary fix overall.

Apr 04, 2010 | Plumbing

1 Answer

Pump will not run when it is hot


Metal heats as it expands so if you have a fit that is tight to the maximum tolerance cold it can be rubbing as things heat up. If a motor is running inertia helps keep it going while the system heats but then it stops and once it has to restart, it can not develop the extra torque needed to get rotation started. Check for things such as sagging motor mounts on the pump motor, a worn bearing fit in a pump shaft or impeller assembly or a damaged wear ring inside the pump housing. Any sign of a rub would show you what to fix. It would be helpful if you clarified what brand and model the pump is and whether the whole unit was replaced or only a portion of it last year if these suggestions don't solve your problem.

Dec 17, 2009 | Plumbing

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