Bosch Pilot Ignition Questions & Answers

Thanks for your response just one last question is the connections in the same position

My Bosch Optiflow 20 hot water system stays on when I am not using the hot water. I noticed when I walked past the unit and it was blowing out hot air nobody else was home. I had to turn it off at the power . I now have to turn it on when I need hot water because it will not turn itself off

I dont have the tf 400 but i hv the 10p water wizard ...not sure if similar but ive had similar problems.what ive put the pilot light going out and the main burner going out after 2 minutes or so is that there wasnt enough air flow.i used a holesaw to drill out a 30 mm hole in line with the pilot so if my ignition wont light i can use a gas extended lighter and also proped up the glass cover where the buttons are half way and put a makeshift hood over these .this has been an excellent fix and hasnt gone out in 3 weeks.try this and if it doesnt work just cover hole back up and drop glass screen..good luck.

I dont have the tf 400 but i hv the 10p water wizard ...not sure if similar but ive had similar problems.what ive put the pilot light going out and the main burner going out after 2 minutes or so is that there wasnt enough air flow.i used a holesaw to drill out a 30 mm hole in line with the pilot so if my ignition wont light i can use a gas extended lighter and also proped up the glass cover where the buttons are half way and put a makeshift hood over these .this has been an excellent fix and hasnt gone out in 3 weeks.try this and if it doesnt work just cover hole back up and drop glass screen..good luck.

Having the same issue with our Bosch 10p. Full burners on all the time and then it will just cut out (usually if we’ve turned on a hot tap once or twice at some point).

Go get a Gas plumber....

Not sure, but all the buttons on my system jammed, so it looked like they were on but were literally stuck, i tried contact cleaner and everything from CRC to Inox but after the second unit and fifth call out in 12 months i repaced it with a Rinnai B20???

Just Google it. Put in your model and there will be an online manual that you can look up.

Hi,
Start by making sure all your taps are off.
There should be two valves on the pipes outside the unit. Turn them both off for 20 seconds or so, then turn them back on. Done.
The unit locks-out if there is any air in the gas line. As its ignition is hydro-powered there is no need for lighter or matches.
I hope ur hotwater has already been restored, but if not, i hope this solves your prob.
Good luck.
C.

Had this same problem with my 16P just a short while ago. Was frantically trying to restart pilot but the off button I pressed by mistake would not pop up again Rang up their help line but the lady said nothing can be done but should call the plumber. Was about to call plumber but in meantime read a useful reply from a guy who said he sprayed WD 40 and just depressed a few times and off button popped up again. In my case the off button popped up again when I depressed the pilot light button. Saved me frustration and probably about $100 for plumber to come round. Bosch products are excellent as this unit is 6 years old and has been trouble free. The attitude of their service and management however is another matter altogether. Hope this advice helps someone.

Hi Lauren,
Sorry, but beyond my knowledge. Google 'Bosch' in your area and they are bound to have an authorised technician who could give proper advice.

These units need to be serviced every two years. I used WD40 in the and around the button.... Seemed to solve the problem.

This is your connection fee from your gas company - you pay $70 a quarter even if you don't use any gas.

Look up the side on the sleave you will see a sensor. Are both the wires connected?

The pilot needs to warm itself up for a while. Keep the button held in for about a minute until you see the colour of the flame change, then release slowly. If it goes out, try again. I'm no expert but I think the warmth of the pilot might actually draw that little bit of gas that keeps it going. No warmth = no draw?

You will need to ask Bosch as I am just a customer...

Bosch should declare 10p obsolete model and request all installers to stop selling. It's getting beyond the joke.

I have the exact same issue right now.
Does anyone have an answer?
Should the "Off" button remain depressed or is there something wrong with our switch?
Regards,
Scott

Hi,
I found the same issue in an other forum.
Yes, when the "Off" button is stuck depressed, no gas will flow to light the pilot light.
The forum suggested using WD40.
I just tried this and it works. Just spray the WD40 around the edges of the button to try and get some oil into the back of the switch.
I gave it a couple of pushes and out popped the button.
Next time I will use graphite as WD40 has a tendency of gumming up making these issues worse in the long term.
But for now I have hot water again!

Sorry, I have no idea! I don't understand the first thing about them. Depending on how long you have had it, it may still be under warranty, so I suggest you ask Bosch. Be wary about getting a Bosch technician out though, as I've heard if they say nothing is actually wrong with it you may have to pay a hefty fee.

possibly something like the diaphram or a service kit will MAYBE fix your problem and cheaper than you think around $100/$200 tops because the bosch techs usually have most spares with them if its fixable instead of i'll be back soon just got to go and get parts from bosch (another hour you pay for) so i say phone up the local bosch helpline and get it fixed in 24/48 hours then have it serviced every 3or4 years and all SHOULD be good