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Truman caravan water heater.good flow of water but not hot

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Our truman water heater leaks BEFORE GETTING UP TO TEMPERATURE

Posted on Apr 17, 2010

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6ya6ya
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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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2006 dodge grand caravan replaced thermostat and radiator, still no heat?? And the van is running hot


How hot is the engine in degrees F? With a fully warmed engine are the heater hoses, hot? Check coolant flow through the heater core. If no coolant flow through the heater or engine, I'd have to check water pump.

Sometimes when the cooling system is opened, it may get air in the system, your temp gage may be reacting to air in the system?

Nov 22, 2014 | 2006 Dodge Grand Caravan

1 Answer

1986 dodge caravan heater troubleshooting, not heating the vehicle


try bleeding the heater matrix out to remove the air,with the heater switched to hot,disconnect the out flow pipe from the engine end with the motor just warm, (so you dont scold yourself), till water flows well then reconnect pipe and top up system, if theres no flow then you need to flush the matrix out by disconnecting both water pipes and connecting a hose to the in flow of the matrix and flushing out till water runs out the out flow end,then reconnect hoses and bleed out, top up rad or heder tank and check anti-freeze.

Feb 08, 2013 | Dodge Caravan Cars & Trucks

1 Answer

Low water pressure


Hi Bob,

You can determine if the tank is the problem by connecting a garden hose to the drain that is provided on most water heaters. Before doing this, be sure to shut of the electrical supply to the heater - otherwise you can damage heating elements if an electric type or waste fuel by heating an empty tank if a gas / propane fired type.

If you get a slow flow out of this drain, it means that somewhere in the cold water supply side to / in the tank - there is a problem. Inside the tank, the cold water is delivered by a "dip tube" that distributes the cold water to the bottom in the tank. Dip tubes are used in both electric and gas / propane fueled heaters. Here's a cut away view of a typical tank:



6_29_2012_9_57_32_pm.jpg

If the tube is clogged, or there is build up, scale or debris in the supply (cold water) side of the heater, flow rates will suffer. Likewise, if there is a problem with the output of the tank, it will directly affect flow as well.

If you get a good flow rate from the drain, then the issue is going to be on the hot water output side of the heater. Again, the same build up, scale, debris issues on the hot water out put pipe will cause problems with flow. Typcial tanks do not have dip tubes for the hot water side of the tank - as taking hot water from the top of the tank is most desireable and is furthest away from the cold water that rushes in to make up the hot hot water going out.

There's nothing really in the tank itself that can cause issues with flow outside of the dip tube, and piping to and from the tank.

Good luck!

Jun 29, 2012 | Water Heaters

1 Answer

I installed a dhc tankless heater, but when I open only the hot water everything is ok, but when I open the cold water at the same time the heater turns off.


Hi and welcome to FixYa, I am Kelly.

What is happening is that your cold water flow is greater in volume (gals per min) than your hot water. So when you open the cold water it is mixing with the hot water inside the faucett or shower plumbing and actually reverse flowing back into the hot water heater plumbing. The reverse flow slows the water flow sensing turbine inside the heater and it is thinking that there is not any water flow. (There isn't actually due to the equalization of water pressure when you open the cold water faucett) Since this is a safety feature of the tankless heater to keep it from overheating, it shuts off.
Somewhere in the hot water plumbing there is a major restriction. It may very well be the internal plumbing of the tankless hot water heater or the flow detector design.

There are 2 ways to correct this. The easy way would be to restrict the available cold water flow. You can do this by installing another shut off valve inline with the cold water plumbing and just not open the valve all the way. You would have to adjust the setting so that the hot and cold water can be on at the same time and the hot water heater stays on. The hard way is to locate the hot water flow restriction and eliminate it.
It is possible.... if you have a flow restrictor in a shower head or a screen in a faucett areator that they are partially clogged. Clean any flow restrictors and screens then see how the hot water heater performs before you start modifying plumbing.

Thanks for choosing FixYa,
Kelly

Apr 10, 2011 | Stiebel Eltron DHC-E 8 Tankless Electric...

1 Answer

The heat in my 1994 dodge caravan does not work. The van will heat up and then I try the heater sometimes it starts to then it fades to coolness.


Sounds like a partial plug in a heater hose or the heater core itself. There's not a full flow of water and it cools off faster than its replenished.The hot water valve may not be opening all the way either. Backflush the heater core,run water from a hose the opposite way it normally flows,Thru the core to clear it. Check hoses the same way. Also chech them for soft spots the hose may be collapsing internally.If the engine is not overheating the water pump is probably ok . if it is running a little too hot the thermostat may not be opening all the way either/ Replacing it could help too. Chibasset

Oct 23, 2009 | 1994 Dodge Caravan

2 Answers

Carver cascade 2 No water at all comes out of the hot water outlet. The inlet non return valve has been changed & is working correctly.


Check the tank drain valve for water there.If you get a good water flow there you know the tank is getting water pressure.Check the first outlet downline from WH and if there is no water there you have a blockage or other problem.If you have to turn off water to tank, remove the outlet pipe ,and check for water flow from tank with in valve on.If no flow, tank is plugged up.
Hope this gets you going.

Oct 06, 2009 | Reliance & 40 Gal Mobile Home Water Heater...

2 Answers

Burners will not disengage after shutting off Hot Water.


Ok the way this system works is from a pressure and flow switch. The pressure switch picks up the slight drop in pressure when the hot side water is turned on then turns on the burner. The flow switch measures the amount of water flowing and adjusts the size of the burner to the amount of water flow. So a couple different things might be happening. The flow switch might be sticking causing the water heater to throttle down the burner but not off when the water flow is off. Or the gas control valve might be by-passing gas when off causing the burner to stay on even when the demand is off. Run the hot water on high demand then turn the water off. If the burner is still on try banging on the water heater with your hand and see if the burner shuts off completely. If it does the gas control valve might be by-passing. You would also need to check and see if the pressure/flow switch is giving any voltage signal changes when the water flow is off. These tankless water heaters are more comlplicated to work on than a standard water heater and you may need a professional's help...good luck

Sep 23, 2009 | Bosch AquaStar 125FXKIT-NG 125FX Natural...

1 Answer

No hot water after installation and powering up


All water valves open? Unit will flow approx 3/4 gallon prior to starting. If flow is good, check the flow switch to see if it is closing. If flow switch is closing and unit still not firing, assuming gas pressure is good; Nat 3.5''w.c., LP 10" w.c., loose wiring at board, ignitor. Sounds like something simple overlooked.

Jul 12, 2009 | Rheem Tankless Hot Water Heater...

1 Answer

No water coming out of hot water taps, water is getting hot in the tank, we have changed the non return valve it izs a cascade 2 that is whot it says on the outer cover of the caravan


I'm not sure I have the whole picture here but When water simply will not flow from a tank your first guess that it is a faulty valve was a good one. While you had the valve off did you turn on the water briefly to verify that it flows well at least up to where your valve was? You may have to do this test. The clog could be right at the tank itself. Before you open up the pipe again first look for anything steel. I have found steel plugs screwed into an old threaded outlet on a pipe that has, over time, produced a large rusty blob that has blocked the flow of the water. If there is nothing like that going on you will have to open up the pipe. By the way, if hot water flows at any other locations, like the tub, then you know that the problem is not at the tank. you have to figure out where the blockage is by a process of elimination.

Jun 16, 2009 | Water Heaters

1 Answer

Under sink water heater no flow of hot water from it


basically the principle of the heater is water flows into a internal tank and is heated by an element. You open a hot tap and the mains cold water forces the hot out and replaces it inside the heater.As you have a flow problem i can only suggest you may have some kind of restriction or blockage in the cold water supply at the water heater or from the hot supply from the heater.If you live in an area where lime content is high then this can calcify when heated.If you can, isolate the water supply and electrical supply and check the pipework for blockage.Also investigate your hot tap as this may be the fault. Good Luck

Mar 26, 2009 | Water Heaters

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