Question about Bosch 1600H-LP Liquid Propane AquaStar AquaStar Liquid Propane Tankless Water Heater

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Have a Bosch GWH 1600 H (LP) Tankless Water Heater. In the winter it heats constantly with no issues. In the spring, summer, and fall, it will deliver HOT water for about 5 minutes, then progressively cool off. It will finally send cold water. Afetr about 2 minutes, the water will again begin to warm up, and then the cycle start all over again. This happens if there is any COLD water on as well as no COLD water. Any Ideas what is going on? My wife is losing her sense of humor!! Lance

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Posted on Jan 02, 2017

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SOURCE: Bosch tankless GWH 1600 H NG won't always ignite

The manual says to hold a match near the pilot while the ignitor is trying. It says that if the unit lights the pilot orifice may be dirty or clogged. We cleaned ours to no avail. Then the manual says to check the voltage on the igniter. It should be 1.3 volts DC minimum. I just checked mine, and it was under .85 volts DC. According to the manual that means the electronic control box is defective.

Thanks,

Mike Wenger

Posted on Mar 24, 2009

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gary1121
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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

mrhotandcold
  • 248 Answers

SOURCE: we have a 3 year old Bosch GWH 425 HN tankless LP

suggest you complain to Borch sometimes lemons get through best of luck

Posted on Oct 30, 2009

  • 1 Answer

SOURCE: bosch on demand tankless water heater gwh 2400 E LP error code "

BOSH AQ 250 On demand propane water heater ran out of propane, got gas now, but get EC flashing on the display and the unit won't fire? Lost manual, any suggestions. Thanks, Jim

Posted on Feb 23, 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

Add a comment for more free help.
Also take advantage of fixya expert assistance live.
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Fixya is always less expensive than a service call.

Posted on Mar 05, 2011

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