Question about Bosch PowerStar AE125 AE125 Whole House Electric Tankless Water Heater...

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PowerStar AE 125 Electric Tankless Water ... No hot water, no light. Power to the unit is ok, and water is flowing through the unit.

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6 Suggested Answers

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Posted on Jan 02, 2017

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  • 25 Answers

SOURCE: Bosch 125 Tankless Water Heater - Water not hot enough

Sounds more like the venturi in the watervalve of the tankless water heater is clogged. I would recommed rebuilding it and paying close attention to properly relubing the pushrod and cleaning the venturi.

Posted on Jan 19, 2009

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gary1121
  • 332 Answers

SOURCE: Looking for Outdoor Tankless propane water heaters

it will tell you right on the box if it for indoors or out doors either way they have to have a cover over them,,

Posted on Jun 09, 2009

c7121
  • 160 Answers

SOURCE: Our PowerStar PS19T tankless water heater

The PowerStar AE115 unit replaces the PS19T model which has been discontinued. Now's the time to upgrade...

Posted on Dec 14, 2009

  • 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

  • 33 Answers

SOURCE: We have a powerstar 125

try bleeding that section of pipe. or the whole system if not.

Posted on Jan 30, 2011

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1 Answer

Bosch AE 7.2


Those flow switches are easy to replace, only wire connections and a couple compression nuts. The replacement switches are available online.

May 06, 2014 | Bosch AE-7.2 PowerStar 1.2 GPM...

1 Answer

How do i regulate water flow for powerstar 125


there are no valves in the unit. You can only regulate waterflow through this machine with self-supplied ball/gate valves

Nov 24, 2013 | Bosch PowerStar AE125 AE125 Whole House...

1 Answer

AE 125 Just Stopped Working Altogether,,,Still Has Power But No Light Or Hot Water?


Turn circuit breakers fully off and then back on.
Use nose to smell for burning inside main panel.
Make sure you are getting 240Volt and not just 120V from one leg of the breaker.
Do stress test on breaker panel.
http://waterheatertimer.org/Troubleshoot-household-electricity.html#stress

Least expensive solution: Replace tankless computer for $285 buying tank-type electric water heater from local box store.

If tankless computer is new, then call installer.
If you installed it yourself, call professional installer.
http://waterheatertimer.org/How-to-wire-Tankless-electric-water-heater.html

Gene
h

Sep 24, 2013 | Bosch PowerStar AE125 AE125 Whole House...

1 Answer

AE-9.5 Bosch Tankless Water heater - no manuel or installation instructions


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/

Feb 02, 2013 | Bosch AE-9.5 Electric PowerStar PowerStar...

1 Answer

Bosch AE-9.5 keeps tripping the reset


All resets and breakers trip with high heat.
Do you mean the tankless unit is tripping the 40 amp circuit breaker?
Or the thermal cut-out, located on unit, is tripping?

Is this a new installation?
Or was the tankless working before and stop working?

Copy following link to check wiring.
AE 9.5 requires 40 amp breaker and 6 gauge wire.
http://waterheatertimer.org/How-to-wire-Tankless-electric-water-heater.html

If the unit is tripping the thermal cut, -out, then product manual says to call Bosch or service technician.
Call Bosch 866-330-2729
http://waterheatertimer.org/pdf/Bosch-Powerstar-AE3.4-7.2-9.5.pdf
Thermal cut-out can trip if water flow is too low.
Try changing power selector screw from Hi to Lo so only 1 element is ON. See diagram page 6 of manual.
Adjust the 'outlet service valve:' The manual recommends that a ball valve be installed between hot outlet and faucet. Adjust the valve so more water flows to faucet.
Remove aerator, clean aerator, don't use low flow restrictions or low flow shower heads, replace leaky faucet cartridge on single-handle faucet.

Aug 29, 2012 | Bosch AE-9.5 PowerStar 1.5 GPM...

1 Answer

Have the 125. The light comes on on the panel, but water is usually ice cold. Have tried adjusting the thermostat but same results. Open to any suggestions on this matter. Thanks


Any suggestion could include a list of possible problems from bad PC board, burned out element, bad sensor, loose wire, or combination or these.
More information is needed to make a guess.
Test elements for continuity.
Check wires for loose and burned connections.
Open TP valve and test if hot water is available at machine.
If water at TP valve is hot, then problem might be plumbing-related, for example crossover.
http://waterheatertimer.org/Crossover.html

Aug 15, 2011 | PowerStar AE 125 Electric Tankless Water...

1 Answer

Need tanks for bosch ae-125 water heater


good luck,, there aren't that many whole house electric tankless units of any kind even made

Apr 17, 2009 | Bosch PowerStar AE125 AE125 Whole House...

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