Comments on: Bosch 1600H Tankless Water Heater Troubleshooting

By: Gene mikkila

Gene mikkila — Tue, 17 Jan 2017 04:04:10 +0000

In reply to Ben. They recommend rebuild kit for water valve every 3-5 years. Cost $75

By: Rick RYan

Rick RYan — Thu, 27 Oct 2016 17:18:01 +0000

I have a 1600h that I installed at my cabin when they first came out. It is the most frustrating unit I have ever dealt with. The unit is installed at 7000′ on the West Slope of Colorado. I have an 80 gallon propane tank running it. In warm weather it is 80% reliable. We turn the hot water on at the sink in the bathroom and wait for hot. We hear the click of the igniter but until it catches and ignites we have to turn it on and off many times. Once we get hot, then we can turn the shower on and take a shower. The colder it gets outside the more likely it is not to work. Recently I tried unsuccessfully for an hour to take a shower that I desperately needed. I finally ended up replacing the whole house water filters ( the water is dirty and has to be filtered) to get it to work. We have about a 25′ run to get to the kitchen sink. We seem to never be able to get hot water here. I suspect there are a number of variables at play here. 1. The propane tank outside doesn’t get warm enough to generate enough gas to get it going. 2. Due to the reduced water pressure ( due to filter or other reason) the unit will not fire up.

By: george

george — Sun, 28 Oct 2012 19:46:44 +0000

i have a 1600 p hasent had 50 gallons of water run thru it, the piolot will not stay lit. ive had numerous techs look at it but nobody has fixed it yet, its got a full 3/4 pipe running to it correct w/c bosch is a rotten outfit, wont standby what they sell.

By: Ben

Ben — Tue, 17 Aug 2010 02:10:43 +0000

GWH 1600 H LP- The switch lights don’t go on in either position. The pilot light doesn’t light, when the hot water tap is turned on. It also will not light when lit with an outside flame,ie: match, lighter etc. All screens are clean, no blockages, or plumbing crossovers. Before a total failure in heating the water, the water temperature would fluctuate quite a bit during use.