Question about Water Heaters

1 Answer

I have a aqua star 250sx lp tankless water heater that i have to keep resetting. seems to trip when the water flow is high i tried to look for a manual but no luck. help thanks brian

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 332 Answers

You should have no more then 75lbs of water pressure going thru the unit and min of 60lbs these are the pressures they are designed to work under, you may have to add a regulator to the system

Posted on Jun 09, 2009

  • gary miller
    gary miller Jun 09, 2009

    you should have no more then 75lbs of water pressure going thru the unit and min of 60lbs these are the pressures they are designed to work under, you may have to add a regulator to the system

  • gary miller
    gary miller Jun 09, 2009

    you should have no more then 75lbs of water pressure going thru the unit and min of 60lbs these are the pressures they are designed to work under, you may have to add a regulator to the system

×

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Tankless Water Heater


Yes you need to delime tankless each year.
http://waterheatertimer.org/pdf/Bosch_Descaling-heat-exchanger.pdf
http://waterheatertimer.org/pdf/Rheem-De-lime-tankless.pdf

Contact Bosch for exact repair information. My records show following number for tankless gas: 800-642-3111
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html

Sep 20, 2012 | Bosch Water Heaters

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

Aqua star runs on and was running water to out side I guess it would be the overflow ( tankless). Had to turn the water off


Problem is not clear

Before calling service technician, open following link for Bosch troubleshooting resources including contact information for Bosch:
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html

Jun 09, 2011 | Bosch 2400ES LP AquaStar 6.4 GPM Indoor...

1 Answer

I have a aqua star 125 bng-l ser 9650617 the only way i can get water hot is by turning on the shower annd the bathroom tap on?


These type of heaters require a minimum amount of water flow. If your showerhead is the most common flow-restricting type then perhaps it is not permitting the minimum amout of gallons per minute to flow through the unit for it to remain engaged. You might have to try removing the flow restrictor :(

Feb 04, 2011 | Bosch AquaStar Natural Gas Tankless Water...

1 Answer

I have a 250SX aquastar Bosch tankless hot water heater . It keeps going out on EC code; whats wrong? Also I've been running the unit for about a 9 months without hooking up the condensate dain line.


The 250 MUST have the condensate line connected. EC comes from gas supply problems and CO2 levels not being adjusted. LP units require 3/4" smooth gas pipe or 1" corrugated pipe minimum size. The LP regulator needs to be turned up to about 13 inches of water column and with all the gas appliances on, measure no less than 11 inches of water column. The CO2 levels must be measured by a qualified gas technician with a calibrated (with in 6 months) CO2 analyzer.

Mar 20, 2010 | Bosch & Tankless LP Hot Water Heater

1 Answer

250sx quit working. Gas o.k. water flow good, throws ea code after 3 start attempts. 1. where is the ionization electrode, and is the fan supposed to come on before ignition? Fan comes on afterea code....


The gas pressure must be increased at the regulator from 9 inches of water column to about 12.5-13 inches of water column. The CO2 levels need to be adjusted for each installation. The air intake MUST come from outside the same wall as the exhaust. I have never seen any manufactures tankless unit installed properly. Plumbers do not read the manual.

Jan 24, 2010 | Bosch & Tankless LP Hot Water Heater

1 Answer

Reset keeps triping


http://www.boschhotwater.com/HelpfulResources/TechnicalSupport/BoschAquaStarModels/250SXTechSupport/Troubleshoot/tabid/563/Default.aspx
click on this link and it has the troubleshooting in strucktions for the unit . hopt that it helps you out.

Jan 11, 2009 | Bosch Water Heaters

Not finding what you are looking for?
Water Heaters Logo

Related Topics:

93 people viewed this question

Ask a Question

Usually answered in minutes!

Top Water Heaters Experts

Steven Foerst
Steven Foerst

Level 1 Expert

52 Answers

Mike Cairns
Mike Cairns

Level 3 Expert

3053 Answers

Brad Brown

Level 3 Expert

13529 Answers

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

Answer questions

Manuals & User Guides

Loading...