Questions might be asking for a manual, and asks what error A7 means, and asks how to fix error problem, but model number of Bosch heater is not given. Error codes are start-point for troubleshooting, and can include multiple causes. So following answer provides general do-it-yourself resources, without saying that problem can be 100% diagnosed or fixed by homeowner. 1) Error code A7 is outlet temperature sensor fault. Problems include: need for descaling, dirty inlet water filter, debris in faucet aerators, dirty wiring terminals, bad wiring harness, or bad temperature sensor. 2) Before calling service technician who can test failed parts and catch tankless up on yearly maintenance, open following links for Bosch resources including error codes, phone number, possible manual, and descaling instructions, and cleaning inlet filter: 3) Product manual: Question posted under model 125HX-LP Open following link for possible manual: 4) Do it yourself service bullitens for 125HX-LP 5) Take a moment and rate answer: And take advantage of fixya expert assistance live. For a price, expert works with you while you work on water heater or any do-it-yourself project. Bosch ecologixx 7 manual - Water Heaters question. Clicking this will make more experts see the question and we will remind you when it gets answered. Are you looking for the the instruction manual of the Bosch EcoLogixx 7S WTW8656ECO? View the user manual of this product directly and completely free. Fixya is always less expensive than a service call. Sep 07, 2011|. Before calling service technician, open following link for troubleshooting resources including error codes, manual, links to bosch, phone number,: A7 is outlet temperature sensor fault. Temperature below freezing or above 210 degrees F 1) Check red wire connections at hot water temperature sensor. Clean terminals with an eraser. If badly corroded, replace sensor and wire harness. 63, page 46 in manual). 2) Sensor may trip if water temperature drops below freezing to protect heater from freezing conditions. Any damage due to freezing conditions is not covered under warranty. 3) Clean inlet filter screen and clear any debris out of shower heads, faucet aerators and whole house filters. 4) In areas where water has a high mineral content, periodic descaling may be necessary. Apr 17, 2011|. You ask for free nudge: I have links for resourceful do-it-yourselfer since tankless is large and developing field that can take years of study. For example tankless are prone to lime build-up and must be de-limed each year. Search utube for 'delime tankless' to help restore efficiency. Best place to start is troubleshoot section in your product manual. 1) BOSCH website is easy to navigate: 2) Bosch manuals: 3) Bosch problems at Fixya: 4) Bosch has online tech support form: 5) All costs are energy. Install DIY tank-type gas water heater and avoid the whole headache 6) Add a comment for more free help. Also take advantage of fixya expert assistance live. For a price, expert works with you while you work on water heater or any do-it-yourself project. Fixya is always less expensive than a service call. Mar 14, 2011|. You posted under Bosch tankless water heater. Fixya is ready to assist resourceful do-it-yourselfer, so read information below, and if you are unable to determine what problem is, post another question saying what you've done so far, or contact service technician and when technician arrives, ask that person tricks and tips for maintaining your tankless water heater. 1) Best place to start is troubleshoot section of manual. Bosch manuals: 2) Open pdf of typical manual: troubleshoot section page 33. 3) BOSCH error codes 4) Bosch has online tech support form: 5) Bosch problems at Fixya: 6) Read manual cover to cover and make sure maintenance is scheduled. For example de-liming is recommended each year. Utube search de-lime tankless water heater 7) Install DIY tank-type gas water heater and avoid the whole headache Add a comment for more free help. Also take advantage of fixya expert assistance live. For a price, expert works with you while you work on water heater or any do-it-yourself project. Fixya is always less expensive than a service call. Mar 10, 2011|. 1) BOSCH website shows error codes. FO does not appear: 2) I do not see FO error code listed on Internet search Other FO questions at fixya seem to have no answer: 3) At this point, I would suggest calling a service technician. While waiting for service, read manual cover to cover several times. 4) Your manual is valuable resource, and shows the word 'maintenance' and 'troubleshoot' frequently. Tankless are maintenance heavy, and should be de-limed each year. U-tube search 'delime tankless water heater.' 5) Also explore Bosch website for your manual and other valuable information. 6) When service tech arrives, ask that person for tips and tricks about your unit that will help you maintain your water heater. 7) All costs are energy. Install DIY tank-type gas water heater and avoid the whole headache.
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