Question about Bosch 1600H-NG Natural Gas AquaStar AquaStar Natural Gas Tankless Water Heater...

1 Answer

Water heater has a slow leak. I plan to clean water filter and lube water valve tomorrow and look for the leak. The leak is exiting from the micro switch at the bottom of the valve assembly but I cannot yet determine the origin. Any suggestions as to where the leak may come from? It drips at a rate of one drop every 2 to 3 minutes. The heater is 3 years old.

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Expert
  • 1,772 Answers

Sorry to read about your problem, I hope this helps you out.

Most leaks occur from the upper boiler area and condensate area. look for a white substance, looks like powder. this is acid based, and can eat thru metals.
as a rule, this comes from the exhaust area.

I tried to help you. Please help me and Rate/Vote on my response. We take the time to answer your question. take the time to rate us.Thanks and good luck

4 Thumbs - Very Helpful
3 Thumbs - Helpful
2 Thumbs - Somewhat Helpful

Posted on Dec 29, 2010

1 Suggested Answer

  • 2 Answers

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

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer


Yes, you have to shut off the gas going to the water heater. There should be an inline shutoff around it. Otherwise your going to be leaking a lot of gas which is very dangerous.

Apr 03, 2016 | Water Water Heaters

1 Answer

How can I fix a leaking valve in the water heater. For some reason, a genius decided to put a plastic valve and now it has a slow leak.

sorry but many genius people put in Plastic valves because they work much better than the old types but when we do they need to be made so they can be quickly replaced with unions also .

Nov 10, 2015 | Water Water Heaters

1 Answer

Water Leak

Turn off the main shutoff valve located where the water line enters the house.

Nov 04, 2013 | Water Heaters

1 Answer

My 50 gal lp water heater made a slight boom sound and now when i lite it and turn on the main bunner it snuffs its self out

1) Call manufacturer with model number and serial number appearing on label on side of water heater.

2) Copy following link to troubleshoot by type of gas control valve:

3) Product manuals today recommend yearly service, and yearly cleaning of combustion parts, and to keep air intake clean.
If air intake becomes clogged, or combustion parts get dirty, it can slow the exit of combustion gasses, and this will soot the burner, and clog burner ports, which means slow lazy yellow flame and incomplete burning of released gas. So unburned gas is present in combustion chamber and up the flueway. The ignition of unburned gas can cause explosion of various intensity ... and the 'boom' sound you heard.

The explosion certainly overheated combustion chamber and tripped FVIR system.

4) Since each manufacturer has different FV system (flammable vapor ignition retardation system), and each manufacturer has continued to make changes over time in FV systems, the solution for tripped FV will vary by brand and age and model of water heater.
For example the intellivent gas control can be reset in some models, while other models require replacement of parts ranging from gas control valve to FV sensor to glass vial, and include possibly full replacement of water heater.

Jan 20, 2013 | Water Heaters

1 Answer

What should the gas pressure be on pilot?

Copy following link to troubleshoot by type of gas control valve:

Bradford White posts service manuals: Both before and after introduction of ICON (Honeywell) gas control valve

Don't forget to clean air intake locate under combustion parts, using instructions in service manual. Or compressed air. Ample air supply will ensure that combustion chamber does not overheat because of slowed venting of hot combustion by-product that will trip the FV system.
And remove heat trap inserts if water pressure has problem or water heater is humming or whistling

Post question on pro water heater forum:

Nov 28, 2012 | Bradford White MI40T6FSX 40 gallon LP gas...

1 Answer

Drain valve plastic slow leak 81V-80D

If the drip is coming out of drain valve: Put a hose cap over end of drain valve.
If water is seeping out of cracked drain vale, then replace it.
If the leak is seeping around previously sealed threads, then tank may be rusted beyond repair.

Oct 06, 2012 | RHEEM 30 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Bosch aq 125 no water preasure

Clean water filter yearly or monthly. Page 16 example manual.
Shut off the installer supplied cold water supply valve.
Disconnect water pipe going to the back of the water
valve. Remove filter from back of water valve. Clean the
filter and inspect for damage. Replace if the filter is at all
damaged. Inspect the top of the water valve for signs of
a water leak or corrosion. If present, rebuild the water
Bosch service bulletins:
Descale heat exchanger yearly.

Sep 29, 2012 | Bosch Water Heaters AquaStar 125 series...

2 Answers

I have a rheem 21v50 hot water heater and it is dripping from the spout on the side. How do I stop this slight drip?

Hi, W/D here.
What you are describing sounds like your t&p (temperature and pressure) safety valve, and resetting one involves some risk. You need to have a plan B if resetting it doesn't work.
Plan B: Locate the valve above the water heater. This is the cold water inlet. Locate the gas shut off knob.
We'll execute plan A. Make sure that we are talking about the t&p valve. It will have a tag attached to it, listing the maximum pressure and temperature for the valve. The valve will also have a lever on the top of the valve, attached to a pin.
Try tapping on the pin that the lever is attached to. These aren't hard knocks, but about the amount of force if you were hitting a tack with a small hammer. Just a few taps, then wait. If this seals off the leak, you're done. If not.....
Get a pair of gloves on before proceeding from here. What you can do is lift the lever on the t&p valve, letting some water discharge out the piping. Caution here, the water can be very hot, so you want to protect yourself. The intent here is to flush water through the seat of the valve, clearing any debris out of the valve so that it can seat properly. There are three positions that you can put the lever in, the ready position, which is it's normal position, partially opened, where you lift the lever until you get water, and locked open where you lift the lever and it stays open when the lever is about 90 degrees opened from the ready position. Get something to catch the water if you need to, Place a washcloth in the unbreakable container to reduce the amount of splash. With your gloves on, lift the lever slowly until you get a steady flow of water out of the valve, then release the lever. If this stops the flow, again, you're done.
If neither of these methods resolve the issue (tapping or flushing), then the valve will need to be replaced.
IF THE LEAK GETS WORSE: (Plan B): Close the water inlet valve to the heater described above, and shut off the gas control knob. Relieve the pressure off of the tank by opening a hot water faucet that is fed by this water heater.
Best regards, --W/D--
Please rate this solution so that we may continue to help others. Thanks.

Feb 21, 2011 | Rheem 50 Gallon FVR NATGAS Water Heater...

2 Answers

I have water leaking from the bottom of my waterheater PE50T9A

It is possible that the water heater has a leak at the bottom. They eventually rust out. The valve should be removed if it is leaking and you should replace it. They are cheap. Be sure to use teflon tape to seal it back up

Apr 27, 2009 | Water Heaters

6 Answers

Slow water flow from GE SmartWater under sink water filter.

I solved the problem! The system's manifold (the plastic base you put the filter in) has small black conical shape button. When you tight the filter in, one of the two small triangle-shaped cams (located close to the filter's central hole) pushes the manifold's button, and this opens the water flow. The problem is that the cams are too low and do not push the button all the way in. Take a pliers and squeeze (not too much!) the cams, so they will raise a little: it will be enough to push the button to open the flow completely.

Mar 11, 2009 | General Electric GE SmartWater Household...

Not finding what you are looking for?
Bosch 1600H-NG Natural Gas AquaStar AquaStar Natural Gas Tankless Water Heater... Logo

62 people viewed this question

Ask a Question

Usually answered in minutes!

Top Bosch Water Heaters Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Donni Steen

Level 3 Expert

659 Answers

john h

Level 3 Expert

12104 Answers

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

Answer questions

Manuals & User Guides