Question about Bosch & Tankless LP Hot Water Heater

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PowerStar. Model 45-557701 tankless water heater water wont get hot...it slowly quit getting the water hot

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Gary

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Hot Water Hot to Cold And back. I had that problem for 2 years. I had a very large shower head from the time I installed the tank-less hot water heater and the water temp would change from one extreme to another. Over time my shower head had stopped working as well as it did so I bought a smaller shower head and installed it and amazingly my water temperature quit changing temperature. I now turn my water to what temp I want and it stays there. It's been working correctly for 6 months now ... until yesterday and it quit working completely which is the reason I'm on here. lol

Posted on Jun 30, 2012

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James Stenklyft

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I have had no hot water and have fixed it by removing the inlet screen and cleaning it, also make sure the water flow thingy is spinning in the clear inlet side of the heater. If your on a well or have questionable water algae can affect the flow indacater very gently tap the clear plastic while you have the hot water flowing only if it not spinning . It fixed mine. I ended up dumping bleach in my well to fix mine. Hope this helps someone, nothing like getting ready to go to work and having no hot water!

Posted on Feb 19, 2013

  • ken conatser Feb 25, 2013

    Your solution worked for me. last night had no hot water. After seeing this post took a look at the flow meter and saw it was not turning. fixed the problem by tapping the flow meter.

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4 Related Answers

Anonymous

SOURCE: I have a PowerStar model

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

Read manual cover to cover, make sure tankless receives yearly maintenance as outline in manual.

Add a comment with your experience so others with same-similar problem can benefit.

Also take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Posted on Apr 03, 2011

Anonymous

  • 248 Answers

SOURCE: We have no hot water

diaphragm valve or micro switch best of luck

Posted on Nov 06, 2009

Anonymous

  • 37 Answers

SOURCE: i have the bosch

how is heating element ? Wasit on with no water running thru it. Does it have a reset?

Posted on Jan 26, 2011

Roni Davey

  • 414 Answers

SOURCE: Hi I need a installation manuel on a bosch hot

http://www.boschhotwater.com/HelpfulResources/BrochuresManuals/tabid/354/Default.aspx

Posted on Oct 07, 2011

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1 Answer

I have a PowerStar tankless electric water heater, model #44-557710 and it was replaced about 3 months ago. This morning I had hot water and this afternoon I do not. When I call for hot water a red light...


Call Bosch. And exercise your 10 year parts warranty rights.
Copy following link for Bosch power star manuals:
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html#Ariston
Check circuit breakers, fully off and then fully back on. Test if voltage is at least 80% rating plate on unit. Check that temperature dial is set correctly. Call for service again.
Don't install tankless computer that heats water. You cannot fix this computer yourself, and they are problematic for owners.
Go to Lowes right now, spend $285 and buy tank-type electric water heater, roll it into your house, and save money, since the electric tankless computer heater costs average $100 more per year to operate than tank-type heater for average family of 4.
Tank type heater can be repaired by homeowner same day for $25 using off-the-shelf parts from hardware store. And that empowers the regular guy, and gets you off the junk tankless treadmill.
Gene

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

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This is a "point of service" tankless water heater that was manufactured by BOSCH. BOSCH is now Bosch-Climate.us. Technical support is available at 866-330-2729. P.S. check this site: http://tanklesswaterheaterz.com/bosch-ae-9-5-powerstar-1-5-gpm-point-of-use-indoor-tankless-electric-water-heater-reviews/

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I just replaced the circuit board, and the water gets warm, but not hot.


Problem might be crossover from failed single-handle faucet cartridge:
http://waterheatertimer.org/Crossover.html

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

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My Powerstar tankless water heater was installed last April and we have a problem that has become a real issue. We can set the temperature where we want it and get in the shower and the water will go from...


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