I have a Bosch AquaStar Tankless Water Heater, GWH 1600P. I have had it close to 10 years with no problems but other day pilot light went out and I can not get it to light and stay lite.

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Leighton Hurry

Contributor 28 Answers
Posted on Mar 26, 2019

Leighton Hurry

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Joined: Jan 15, 2011

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It could be the thermostat sensor They usually have a carbon buildup. They are easy to install and not that expensive. Good luck

Kathrine Potter Feb 01, 2022

How do i replace the thermocouple? I cant get it out

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Ned C Cook

3433 Answers
Posted on Oct 10, 2009

SOURCE: Bosch Aquastar tankless water heater model

There should be a thermocoupler, it is that bulb that sits in the pilot flame. If it is not functioning properly the main gas valve will not open.. Hmmm, Is the main valve in the on position?

Anonymous

Posted on Mar 05, 2011

SOURCE: roblem with the Bosch 1600H-NG

Problem could be air supply, gas supply, venting, part failure or combination of listed things.

Best place to start is manual.
http://www.boschhotwater.com/BoschModel1600H/FeaturesandSpecs/tabid/1024/Default.aspx

Typical 1600 manual shows troubleshoot starting page 19
http://www.boschhotwater.com/Portals/7/TechManuals/1600H_English_0606.pdf

Bosch has online tech support form:
http://forms.boschhotwater.com/Home/BoschTechSupportForm/tabid/614/Default.aspx

BOSCH error codes:
http://www.boschhotwater.com/HelpfulResources/TechnicalSupport/BoschAquaStarModels/2400ESTechSupport/Troubleshooting/tabid/1295/Default.aspx

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I have a Bosch AquaStar Tankless Water Heater, GWH 1600P. I have had it close to 10 years with no problems but other day pilot light went out and I can not get it to light and stay lite.

1 Answer

Leighton Hurry

2 Related Answers

Ned C Cook

Anonymous

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I have a Bosch AquaStar Tankless Water Heater, GWH 1600P. I have had it close to 10 years with no problems but other day pilot light went out and I can not get it to light and stay lite.

1 Answer

Leighton Hurry

2 Related Answers

Ned C Cook

Anonymous

Add Your Answer

Attachments: Added items

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Roblem with the Bosch 1600H-NG Natural Gas AquaStar AquaStar Natural Gas Tankless Water Heater... Aquastar gwh 1600 h igniter fails clicks does...

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Bosch Aquastar tankless water heater model 1600P Pilot is lit but main burner will not lite. replace water valve that controls ignition.

Can't light my Bosch 1600 P tankless water heater.

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Bosch tankless GWH 1600 H NG won't always ignite. The igniter sparks, but doesn't always light the gas. It just clicks. When installed it lit every time, now it takes more and more tries to get it to...

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Bosch tankless hot water heater 1600H

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Roblem with the Bosch 1600H-NG Natural Gas AquaStar AquaStar Natural Gas Tankless Water Heater... Aquastar gwh 1600 h igniter fails clicks does...

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