Question about Bosch AquaStar 125FXKIT-LP 125FX Liquid Propane Gas Tankless Water Heater w/ Hood
The ignition flame always comes on, but the burner will not light 75% of the time, and often only when we first turn on the highest demand tap in the house, the washing machine set to hot, before we can open another tap and expect hot water out of it. But not even that works much of the time. Sometimes I can get it to light by blowing with all my might into the pilot flame and jumping back before my hair gets singed, but that usually doesn't work either. I checked the battery voltage and they are over 1.4V so that doesn't seem to be the problem (instructions say only need replacement when below 1.2V). Replacing them doesn't always help anyway. But the "clicking" when the water is turned on varies greatly in speed. When it is slow, I know the burner won't catch. When it is rapid there's a much better chance that it does.
May be That we have something we can try. first, what doesn't work most of the time? Blowing with all you mite or jumping out of the way before your hair gets singed?
I think it sounds like you might have a maladjusted ignitor. Mispositioned. Its not in the gas path. Sometimes this happens as the tungsten ignitor wears down. That can be adjusted by repositioning the ignitor so it is in the pat of the gas. Just don't test as you go. Set the ignitor so the arc is about 1/4 inch long and about 1/4 inch away from where the gass comes out. Keep clear of the access hole. The longer it takes to ignite, the more gas build up there is. Have your exhaust vent checked. restriction keeps it from drafting and drawing enought air to balance the air gas mixed to ignitable.
Be careful and be safe
Posted on May 18, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jun 13, 2011 | Bosch Water Heaters
Feb 01, 2011 | Bosch 425HN NG Tankless Water Heater
Dec 29, 2010 | Bosch & Tankless LP Hot Water Heater
Dec 08, 2010 | Bosch & Tankless Water Heater
Jul 05, 2010 | Bosch AquaStar Indoor Natural Gas Tankless...
Apr 25, 2010 | Bosch & Tankless LP Hot Water Heater
Dec 01, 2009 | Water Heaters
May 15, 2009 | Bosch AquaStar 125FXKIT-LP 125FX Liquid...
May 05, 2009 | Bosch & Tankless LP Hot Water Heater
Sep 19, 2008 | Bosch 1600H-LP Liquid Propane AquaStar...
598 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: