Question about Bosch AE-9.5 Electric PowerStar PowerStar Electric Tankless Water Heater 9

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My water heater wont refil with pressure - Bosch AE-9.5 Electric PowerStar PowerStar Electric Tankless Water Heater 9

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Open following link for Bosch tankless troubleshooting resources, including Bosch contact information, typical manuals, error codes, tech support, parts, fuel-saver calculator, water heater forum, fixya links, disclaimers, and for finding service technician.
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html

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Posted on Mar 29, 2011

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Posted on Jan 02, 2017

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I've got a Worcester Bosch boiler had a leak In the pipe On the landing so a friend emptied the boiler an I fixed the pipe but I don't know how to refill the boiler


Can you get the manual online? You have the Manufacturer info so you probably have the model number too. I found a manual on Manuals.com for my boiler so they may have yours too which will hopefully have some information on filling boiler although I realize each installation is somewhat different but that's why it's difficult to answer you question. Usually there is a manual pressure valve that regulates the water pressure in the boiler which is usually pretty low...like less than 20 lbs. The manual should tell you the pressure as well. But this pressure valve has a flip handle that comes off the cold water line to the boiler to do just what you want to do...refill it with water. When refilling the boiler (if you find the valve, you may have to purge the air out of the lines which there is a whole other process for. But you shouldn't allow cold water into a hot boiler...it could crack it when the cold water hits the hot cast iron. So make sure the boiler is cool when filling it up.
Now go try to find that manual!

Nov 22, 2015 | Bosch Water Heaters

1 Answer

How to change out copper piping from release valve


If the release valve referred to is the pressure release valve, then a water leak out the attached vent pipe is an indication that the valve is failing. To change the valve, the water must be allowed to cool (turn off AC power or gas) and the water level inside the tank must be lowered (drained) to below the level of the pressure relief valve. Once this is accomplished the vent pipe is unscrewed from the relief valve and the pressure relief valve is unscrewed from the water tank. A new pressure relief valve with a sealant on the threads, is then screwed and tightened into place with the outlet port facing downward. The vent pipe is attached to the new valve and the tank refilled with water. A hot water facet must be opened to allow air to exit while filling. Upon becoming full (water will begin to flow from facet), turn off the facet and restore AC power or gas, therefore allowing the water heater to heat up. When the first hot water is utilized there may be some air expelled from the facet.

Sep 13, 2015 | Water Water Heaters

1 Answer

We have a gas unit in our ensuite for a hot water we can not seem to get any hot water the gas cylinders are getting low so i have asked for them to be refilled or could i there.


refill the gas bottles and then if that doesn't fix it, get a technician out as it may be the pressure switch not opening the gas so that the pilot light ignites the burner

May 03, 2015 | Bosch Water Heaters

1 Answer

Can a pressure relief valve cause hot water to run slowly?


The real question is 'How old is the water heater?'... over time, particularly in areas with hard water, sediment builds up in the water heater. Particularly electric models. typically a TPV (temperature/pressure relief valve) won't cause the symptoms you describe, but mineral deposits around the inlet tube (internal) could, by restricting the flow of water into the water heater.

A TPV is designed to prevent over pressurization which could cause the tank to rupture. I have priced new water heaters as low as $308.00 for a gas powered 40 gallon unit with a 3yr warranty. If you have good soldering (sweat fitting) skills, these are relatively easy to replace yourself. Whether electric or gas, make CERTAIN you shut off the heat source before attempting a replacement.

Dec 20, 2014 | Water Water Heaters

1 Answer

How to troubleshoot a water heater


1) If water flow stops when tap is off, then Sound of water running: could be factory-installed heat trap inserts or nipples: These things cause noise.
http://waterheatertimer.org/Low-hot-water-pressure.html#trap
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html#heat-trap
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html

2) If sound of water continues when tap is off, then there is a broken pipe or leak somewhere in plumbing system.

Feb 17, 2013 | Reliance 606 Series 40 Gallon Natural Gas...

1 Answer

Toto toilet: refill valve opens and closes rapidly


I believe you have a high water pressure going to the
tank. Minimize the water volume going to your tank. This is done by fully closing the inlet valve under the tank. Then open about 1/4 to 1/3 of the inlet valve. To do this, count the number of turns to get it full close from full open position. For 1/4, divide the number of turns by 4 and divide it by 3, for 1/3 open. Hope this will solve your problem.

Nov 26, 2009 | Water Heaters

1 Answer

Bosch 25e water heater wont ignite


combi or standard if combi pressure too high and will be blowing off your high pressure release valve which would stop your boiler from igniting best of luck

Oct 27, 2009 | Bosch Water Heaters

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