Bosch Hot Water & Heating HydroPower 13H Questions & Answers

There's no real fix you can do yourself for this. Need to get a plumber to see if there are parts that can be easily replaced, but based on my experience with it, once it starts doing this it's basically toast.

thanks Gav, what do you recommend i replace it with

I have a Rheem instant gas and have similar issue - it makes a banging/clicking noise when hot water is turned on too. Please update and share if issue is resolve.

Call a plumber... it sounds like a gas fitter job.

This is because the system is not detecting sufficient flow of water. Turn the tap to max - if this does not work, then turn the tap off, wait 1 minute and turn it on to max as fast as you can... wait 60 seconds - watch as the system which claims to have a good energy rating wastes water.... if this does not work then turn all off again...

wait a minute - then turn on tap to max very quick - then go to another hot water tap and turn that one on as well to max.... - if this does not get you hot water then your water pressure is either not enough or your system is stuffed.

Do not try to turn the cold on at the same time until you have the hot working - and even when the hot works - be careful turning on the cold depending on your tap or shower attachments as this may slow the flow of hot enough to make the system shut down the burners again.

Sit back and watch your water bill and gas bill go through the roof even though these systems claim to be energy efficient.... obviously only under lab conditions with the perfect pressure.

Your other option is to take the cover off. There are two user adjustable settings (at least on my 16H) - one shows 1 to 3 flame symbols - this is for adjusting the temperature from low to high flame... this can be increased for hotter water - but this is not your issue - you are not getting enough gas to light the main jets, only the pilot light...

the second adjustment is a knob below the slider - this adjust the flow of gas in general - turn this to max - get some one inside to turn on hot water to full - watch and see if it now lights.

if this worked you may then need to turn it back a little and or adjust the slider so that your hot water when it actually works is not dangerously hot.

You don't. When you turn the water on it spins a small generator that ignites the gas. These font have a pilot light.

Hi Wayne, could you kindly get in touch with us at 1300 30 70 37 any time between 7:30AM to 6PM (AEDT) on a weekday, so we can better assist you with replacing parts for your unit.

Sorry but the unit is rubbish, I have had three plumbers in to try and get hot water but all say there is nothing they can do. They have contacted the Bosch technical team and spoken to them while they were here and the answer by the technical side was there was nothing more that could be done. The unit is useless.

We cannot turn the temperature up more than maximum on the unit, I have a shower on full heat! We have to turn the tap on a number of times to get the heater to work. I will never buy another Bosch product.

Hi Richie, thanks for your question. Please be informed that a few alterations can be made to increase the hot water temperature. Inside the unit there are 2 temperature adjustments that can be made: a slide control that controls the gas burner and a round dial on the water valve. Slide the control to the right to increase the burner and temperature, you can also turn the round dial clockwise to increase the temperature.

If these are already set to the maximum settings, then a service is required. Services are recommended every 2 years. If you need assistance with getting in touch with an approved service agent, please call us at 1300 30 70 37 any time between 7:30AM and 6PM (AEST) on a weekday.

Hmmm - interesting - mine doesn't go beyond 40.5C after max adjustment. Funny that sales don't mention the 2 yearly service charge when discussing the cost-benefits of these units. Solar panels and heat-pump are looking a whole lot more affordable now...

Hi Carrie-Ann, it sounds like your unit may need a service. We generally recommend that all hot water systems are serviced at least every two years. If you require assistance in finding a Bosch approved service technician, please get in touch with our helpful team at 1300 30 70 37 and we’ll be able to find you a local solution. Our team is available from 7:30am to 6:00pm (AEST) Monday to Friday on our toll-free line.

Not familiar with the model. The H for Hydroflo in the model name usually means it has a Water Wheel igniter (no pilot light). I'd be calling who ever installed it to check out the electrics and the gas flow.

I don't know who installed it but would a gas plumber/fitter know?

Hi Ann, as Peter mentioned, there is no pilot light for this type of unit. If you follow the steps mentioned in the answer to your other question and it does not trigger your ignition, please get in touch with us at our toll-free number 1300 30 70 37. Our team is available from 8am to 6pm (AEDT) during the weekday and we will be able to put you in touch with a Bosch recommended service agent.

Hi Ann, as it a HydroPower unit and therefore an electronic ignition system, there is no pilot light. We recommend ensuring that all your hot water taps are off before turning one tap back on at full flow. If this does not trigger your ignition, please isolate the valves at the unit for twenty seconds before re-opening them and trying the steps above again. If this does not work, please get in touch with us at 1300 30 70 37 from 8am to 6pm (AEDT).

Hi Lynn, thank you for your question. Please be advised that we do require more information such as the age of the unit, the gas type you are using, and whether it has been serviced recently. Our helpful team is available from 8am to 6pm (AEDT) from Monday to Friday and can be contacted free of charge at 1300 30 70 37.

Hi Gary, we require further information to assist you with your issue. Please call our helpful team at our toll-free number 1300 30 70 37 any time during the weekday from 8am to 6pm (AEST). If you would like us to get in touch with you, please fill out the following form: external link , referring to your issue by copying in the link to your review. Once we receive this information, we will contact you within a business day.

Hi Mod, Thanks for your question and we’re sorry to hear that you’re having issues with your unit. As there could be variety of factors involved, we would recommend calling our helpful customer service team at our toll-free number 1300 30 70 37 any time from 8am to 6pm (AEST) during the weekday. Our team will be able to gain better insight to the problem and assist in correcting the issue.

I have the the same problem how did you fix it

Probably a dirty pilot jet. Remove the little aluminum pipe to pilot piezo. Its got brass 10mm nuts. Be careful the jet does not get lost it is at the top of pipe. Remove the jet (its as big as a babies fingernail) blow through it and wipe it in your shirt. Its the tiniest little hole and gets wax from dirty gas stuck in it.

Put it back in and refit pipe. Try that.

Thanks for the thought Bog Balls. The pilot flame seems to be OK.. the main burner lights up ok... but then dies out after heating for around 20 seconds.

I have the same problem. Did you find a answer mate

Yep.. the HW people replaced the Control box ($220) and Flame Sensor ($65) + Call out fee and all is running sweetly.