Water Heaters Logo

Related Topics:

A
Anonymous Posted on Sep 09, 2014

Is the red light on a bosch ae125 supposed to come on when hot water is flowing

1 Answer

Gene Haynes

Level 3:

An expert who has achieved level 3 by getting 1000 points

Superstar:

An expert that got 20 achievements.

All-Star:

An expert that got 10 achievements.

MVP:

An expert that got 5 achievements.

  • Water Heaters Master 5,391 Answers
  • Posted on Sep 10, 2014
Gene Haynes
Water Heaters Master
Level 3:

An expert who has achieved level 3 by getting 1000 points

Superstar:

An expert that got 20 achievements.

All-Star:

An expert that got 10 achievements.

MVP:

An expert that got 5 achievements.

Joined: May 07, 2012
Answers
5391
Questions
0
Helped
2606469
Points
14124

Red light shows when power is applied to elements, and water is heating

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

5 Related Answers

freetek

Steve Allison

  • 5569 Answers
  • Posted on Sep 18, 2008

SOURCE: bosch ae125-re tankless water heaters

My experience in Germany with tankless water heaters was not good; the delivery promised was only vaguely warmed water; they are no replacement for standard devices.
If you can find closet or under-counter (in the kitchen) space you might look into the 20 gallon units made for RVs or small mobile homes/campers. They are not expensive to run and cost well below the ~ $400 US price I saw when looking at the Bosch. If you are worried about the efficiency of them or concerned with the cost of electricity in your area, you could have an electrician install a high-capacity (15-20 Amp) toggle switch (looks like a normal light switch) and manually turn it off completely when it is unused for a longer period of time.
In any case, before you jump on the Bosch bandwagon, check the degree (or lack) of satisfaction from current owners:
http://www.amazon.com/review/product/B0006GVO0S/ref=dp_top_cm_cr_acr_txt?_encoding=UTF8&showViewpoints=1
I wouldn't be encouraged to buy that one.   

Ad
co7196

Ned C Cook

  • 3433 Answers
  • Posted on May 06, 2009

SOURCE: no hot water, pilot light lights but no burner ignition

Thermo coupler may be defective. it controls the main gas valve by closing main if pilot is out. make sure thermo coupler bulb is positioned over and near tip of pilot flame, but not in the flame. Thermo couplers are inexpensive and easy to change out.

Anonymous

  • 6 Answers
  • Posted on Jun 10, 2009

SOURCE: hot water problem

Someone has not sized the system correctly. The water heater will heat a certain GPM a certain temperature rise. Most of those "generalizations" from the manufacturers are referencing the lowest of all the flow requirements like 2 lavatories. The truth is, don't use other fixtures while showering or get a bigger system. Lots of information related to sizing the tankless system at http://www.mechanicalengineeronline.com/Mini_Sites/Tankless_Water_Heaters_Ebook/Tankless_Water_Heaters.htm Have a good one. PS:Properly sized On-Demand water heaters are actually really good. Be prepared for the day your water heater quits.

Anonymous

  • 1489 Answers
  • Posted on Oct 04, 2009

SOURCE: I need to know the breaker size and wire gauge and

According to the user manual below, it's a 50 amp heater, therefore, you need 6 AWG electrical cable and a 50 amp double pole (220 volt) breaker in the main service panel.

You need two hot wires and a ground wire. The cable would be specified as 6/2 w/ ground. The 2 hot wires in the cable would be red & black or black & black -- these attach to L1 & L2 respectively. ( L = Line )

More info, let me know.

Charlie

http://ecx.images-amazon.com/images/I/A1b%2BxE2vITS.pdf

Anonymous

  • 3 Answers
  • Posted on Nov 16, 2011

SOURCE: Bosch Water Wizard 960 - Pilot light blown out by

Yes thermo coupling may help although i have the same unit ran well 11yrs then hot cold replaced thermostat about 90 110 to buy easy to fit just keep screw in same place as old thermostat ours blows out less if ever now you also need to lubricate the buttons/sliders which positivly engage that button undo the 2 screws either side of the buttons just loosen no need to remove then you will see how they bind up and jam not allowing you to light it or move from pilot lighting to 3 flame button graphite powder is best for lubing all buttons do up screws when you have tested the operation it should now be smooth do up both screws only hand tight and happy operation..

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

0helpful
1answer

I have a bosch ae115tankless waterheater - the neon light will flash when turned on but when i reset the breaker it will work? any ideas/

Flashing light means bad control unit..or your flow is too low. If you have a couple fixtures on, and its still blinking, the board needs to be replaced.
0helpful
1answer

Power lite flickers onwater heater when drawing hot water

Light flashing while water is flowing means you have a bad control board. Needs to be replaced. They can be purchased online
0helpful
1answer

What is the gray gravely discharge coming from my PowerStar AE125 when using the hot water? It plugs up the faucet and shower heads within minutes and almost completely blocks the water flow.

Heating water can peculate chemicals out of water, such as metals and organics.
Especially above 138 degrees.
Have well water tested.
Turn down thermostat temperature.
Or reasonably harmless well-water bacteria can react with anode rod, or other reaction in softener, to produce colored water, and smells.
Different water can produce different sludges, brown, red, gray, black, yellow.
The sludge can also combine with deteriorating pipe flakes to clog water flow.
Sludge can accumulate over years in low spots in pipes, or at elbows and constrictions.
Have plumber flush pipes.
Or run new pipes.
Also delime tankless yearly, and flush with white vinegar as shown in product manual, and treat bacteria with H2O2 hydrogen peroxide.
http://waterheatertimer.org/pdf/Bosch_Descaling-heat-exchanger.pdf

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

0helpful
1answer

Heater is ae125 is about 2.5 years old no problem until now turned on water and but no hot water light or anything checked breakers,checked cutouts,plenty of flow,still no hot water

Hey did you ever get this fixed mine is almost the exact same thing we've been using ours for about 3 years and today nothing. Thanks for your help.
0helpful
1answer

Not sure if my first try worked so will try again. Bosch PowerStar AE125 Tankless Water Heater. Quit heating water. Water pressure and flow is good. Thermal Cut-outs are good - (not tripped) (Power at...

The easiest thing to do would be to call Bosch and just ask for a new heater for free. The other option is to call Bosch and have them send you all new elements. If there is power, there should be heat of some kind.
0helpful
1answer

No heat, no light, has flow and power?

I'm experiencing the samething it's been installed 3 years and christmas day nothing. Please help.
0helpful
1answer

I need to know the breaker size and wire gauge and number of wires needed for a bosch ae125 water heater

According to the user manual below, it's a 50 amp heater, therefore, you need 6 AWG electrical cable and a 50 amp double pole (220 volt) breaker in the main service panel.

You need two hot wires and a ground wire. The cable would be specified as 6/2 w/ ground. The 2 hot wires in the cable would be red & black or black & black -- these attach to L1 & L2 respectively. ( L = Line )

More info, let me know.

Charlie

http://ecx.images-amazon.com/images/I/A1b%2BxE2vITS.pdf
0helpful
1answer

Only goes on when I put hot water on full blast

hi, i expect the problem to be because the flow switch which activates the heater wont switch the heater on as it requires a certain amount of water to activate the flow switch & then bring it on.
It may also be thatthe sensor on the flow switch is scaled up so it needs a greater flow to keep the heater running?
Sensor or flow switch may need replacing.

kindly

Richie
0helpful
2answers

PowerStar AE125 seems to have failed

You have a blown element. If you purchased the heater, call Bosch for technical assistance, and the unit should be under warranty. The grey matter your getting is the magnesium that the elements have in them.
Not finding what you are looking for?

130 views

Ask a Question

Usually answered in minutes!

Top Water Heaters Experts

Brad Brown

Level 3 Expert

19187 Answers

Paul Carew

Level 3 Expert

3808 Answers

ADMIN Andrew
ADMIN Andrew

Level 3 Expert

66963 Answers

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

Answer questions

Manuals & User Guides

Loading...