Question about Bosch AquaStar Indoor Natural Gas Tankless Water Heater with Vent Hood #125

2 Answers

No hot water

The grid lights up but no hot water only luke warm also a small water leak is coming out of the valve from the cold water intake.

Posted by on

  • albert getty
    albert getty May 11, 2010

    is it hooked up backwards more then ten people have had simuler problems no one ever answers me on this ? can you please let me know? I have a feeling that becuse this is a newer product some plumbers are installing wrong lets say you are hooking one up on the wall infront of you and to the left in the corner where it just so happens the water input is comeing from so it gets hooked up this way but in truth the water input for the waterheater is on your right? do you also have low water pressure when unit is on? if so it would explain my thoughts on this where the hot water is pushed backwards through heater causeing low warter pressure and heat and in cases where there is a pump in heater leaking . thank you if you can help me with this please leave your name and I will add your name to my finding thank's again Albert

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Our will start clicking and stop. it does not light unless we smack on the tank a few times

Posted on Aug 06, 2009

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 332 Answers

If the leak is behind the handle take the handle off and tightn the packing nut, do not over tighten, as far as luke warm water is this with just one facucet on, they way these tankless water heaters work they are by gpm, gallons per min, if you have more gallons of water going thru the unit then it is designed for then it won't get hot, if your water pressure is to high going thru it will push it to fast thru the unit and won't get hot, your house pressure should be no higher then 75lbs no lower then 65lbs

Posted on Jun 06, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Radiators hot no hot water. Luke warm for a bit. Then back cold. Setting is past 'eco' just moved in not used to combi but surely this isn't right


check the diverter valve. look to see if when hot water turned on the small electrical switch at the end operates. If not then a ned valve or diaphragm

Apr 10, 2015 | Water Heaters

1 Answer

A.o. smith powerhouse powershot nat gas hot water heater 40000 btu the vent hasnt stopped running for 3 days and the water is luke warm at best


If the vent has been running for 3 days, is there fire in the hole? I suspect there is a lot more to this story. If there is fire in the hole, turn off gas and call someone before you get killed. Seriously.

Apr 02, 2014 | Water Heaters

1 Answer

Replaced diverter valve on worcester 9.24 combi and still only luke warm water


check your expansion vessel is not flat.if so recharge..simple way to check press in valve on vessel if water comes out or little air recharge..if water still in vessel the diaphram in vessel has split so replace vessel?hot water relys on expansion??

Dec 10, 2012 | Water Heaters

1 Answer

Gas ignites flame but water is not getting hot


You have gas water heater with working burner.
But not getting hot water at faucet?

1) Bad faucet cartridge. Test for crossover. Copy following link:
http://waterheatertimer.org/Crossover.html


2) Is there hot water inside the tank? Open drain valve and check for hot water.

3) Drips and leaks: Turn off all taps and put ear against pipe and listen for water leak.
Water leak can run all the hot out of tank.

Dec 05, 2012 | Water Heaters

1 Answer

After draining solids from the water heater I now have mostly luke warm water. And had no problem before.


the dip rod in heater may have failed. did you see any white chips in sediment while draining. if so its the dip rod, they do fail sometimes. If the water heater in your home was built between 1993 and 1996 and you are beginning to find small pieces of plastic in your faucet aerators, shower nozzles and washing machine supply tube, or if your water temperature is suddenly not as warm as it used to be, the source of the problem may be your water heater's dip tube. The purpose of a dip tube is to carry cold water to the bottom of the tank, where it is heated for use. The defective dip tubes tend to crumble and disintegrate into the tank. Over time, its plastic ! have a very good day !

Dec 18, 2011 | Rheem 50 Gallon FVR NATGAS Water Heater...

1 Answer

I have abosch 1600 ps aquastar 4.3 gpm indoor when i turn hot water on it all fires up but no hot water comes out only luke warm water why


Water heater is heating water but only luke warm water arrives at faucet.
Open TP valve and confirm that hot water is available.
If water at TP valve is hot, then problem might be plumbing-related, for example crossover.
http://waterheatertimer.org/Crossover.html

Aug 15, 2011 | Bosch 1600PS NG Aquastar 4.3 GPM Indoor...

1 Answer

My oil fired hot water heater provides only sporadic hot water. For example, when I am home alone it takes 2 minutes to get luke warm water in the shower, then it is only warm for a few minutes, then...


It sounds like your thermostat on the water heater isn't working properly. try turning it up higher and if this doesn't work I would have a service techy look at it.

Mar 24, 2011 | Water Heaters

1 Answer

My water is luke warm and then runs cold and then overnight goes back to luke warm. I turned temp gage s up to 150 and still luke warm. I have a Rheem 40 gal electric tank


Its time to replace the heating elements. 90% of the time it's going to be the bottom element, but if you're going to drain it anyway, elements are only $10.00 to $12.00 I would go ahead and replace them both. Replacing the elements is simple just follow these steps.

Step 1: Turn off the power to the water heater.
Step 2: Turn off the cold water valve supplying the water to the heater.
step 3: Drain the water heater there are a few steps to proper draining, connect a hose to the drain port on the lower front of the heater and open the drain valve (remember its gravity drain so downhill all the way) pull up on the pop off handle to relief the pressure in the tank and to let air in so it can start draining also open the hot water valves in your tubs and showers (the more air you can get in the faster it will drain)
Step 4: Undo the 2 wires connected to the heating elements and unscrew the element counter clockwise until it comes out of the tank (they make a socket type tool for removing the elements it's real cheap and can be found at any Home Depot)
Step 5: Take the elements to Home Depot (or any hardware store) and find the exact replacements also get a 1/2" roll or Teflon tape.
Step 6: Teflon tape the threads on the elements (with the threads facing you apply the Teflon tape clockwise) about 4 times around the threads is good.
Step 7: Reinsert the elements into the holes and snug them up tight. (Clockwise) Not supper tight
Step 8: Reconnect the wires to the elements they are 220 volts so there is no neutral either wire to either screw is fine.
step 9: Close the drain valve a disconnect the hose make sure the pop off is closed and turn the water back on leave the tubs and showers on until the tank is filled and air quits coming out of them . Check around the elements for leaks if you see a leak simply snug it up a bit more.
Step 10: Set temp to 125 or whatever you find efficient, replace element covers and turn the power back on and you're all set.



controlltech_4.jpg

Nov 23, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

My jAYCO rv only get luke warm water for as few seconds and


Also check that by-pass valve(s) is/are, in proper position at back of tank.

Apr 19, 2010 | RTO Atwood DSI-RV Water Heater-6 Gallon

1 Answer

Hot water tank shuts down after5 minutes pilot still on water


Carefully catch some water in a container from pressure relief valve (pull lever slightly) at top of tank, and see if it's up to temperature. If it's hot there, I suspect your by-pass at back of the tank, is faulty. Depending on what by-pass system your using, it may be in wrong position, blocked, or mixing hot and cold. Cold water flows into bottom of tank, and hot out the top. If any valve in between the 2 lines, close it, and make sure valves in and out of bottom and top are open. Let me know what you find, or if water from pressure relief valve is not hot either.

Jul 12, 2009 | RTO Atwood Water Heater - 6 Gal LP

Not finding what you are looking for?
Bosch AquaStar Indoor Natural Gas Tankless Water Heater with Vent Hood #125 Logo

274 people viewed this question

Ask a Question

Usually answered in minutes!

Top Bosch Water Heaters Experts

Steven Foerst
Steven Foerst

Level 1 Expert

52 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21936 Answers

Raygin
Raygin

Level 2 Expert

322 Answers

Are you a Bosch Water Heater Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...