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How to decalcify - Mountain Plumbing Mountain The "Little Gourmet" Heating Tank MT641

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Have 2 Bosch tankless water heaters model 2400 ng. Won't maintain temp.

This could be a heating element going out do a ohms check on the elements

Jan 29, 2014 | Bosch Water Heaters

2 Answers

I have a PowerStar model #44-557701 tankless hot water heater. When you turn on the hot water it starts to heat and then it just shuts off. My dad thinks it might have something to do with the flow sensor....

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.

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.

Feb 13, 2011 | Bosch & Tankless LP Hot Water Heater

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Gets really hot but only for 2 short showers. Ran d/w this morning and no hit water for about 2 hrs. Tried curcuit breaker and reset button on heater worked last night.

My guess would be that the heater elements are coated very heavily with calcium deposits and are not oeperating effecient enough to keep up with use. These can be removed and replaced or cleaned but the tank itself would also be suffering the same problem. I have never tried decalcifying a tank because the age of water heaters are usually more energy and money saving to just replace. sorry

May 16, 2010 | Water Heaters

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