NECKAR N19E Gas Junkers Fails to Ignite Despite New Batteries and Checks

Hello everyone!

I have this problem:

I turn on the hot water in different ways - stronger, weaker, with different frequency and just nothing.
Sometimes the red LED blinks for a fraction of a second when you unscrew the water, but there is no spark or the gas does not fly because I tried with a match or maybe it will fire.
The batteries were replaced with alkaline ones a week ago - they have 1.55V - I have just measured it, which is even 0.05V more than necessary.
I blew compressed air on the sensors and the interior and nothing.
I checked all the fittings, etc.

The most interesting thing is that the day before yesterday it was practically working all day long. Before that, it did not work for a week. And now the second day does not work despite many attempts. I have not noticed any factor that could have influenced this. Nothing was touched by the junkers. Coincidentally, my wife unscrewed it and it just clicked. And then during the day we used it at least 5 times. So he had one good day :)

My wife complains to me that she cannot take a bath - you know how it is with women And there is still a long way to pay - by the 10th.

I'm an electronics engineer but I haven't dealt with junkers yet.
Help!
At least some suggestions ?!

Hello. Set the microswitch, the one next to the battery, white. You need to insert a thin flat screwdriver into the microswitch on the side of the battery, on the left. You must jump on the teeth in the middle. 2 contacts, when it ignites, i.e. the micro needs to be changed or it is damaged. Also check if it is flooded with water.

Bingo! Shorting the plug helped - it fired normally after unscrewing the water tap. I still have to deal with the micro-switch, maybe it can be completely repaired. What is its function and how does it work? Ie. what is the risk of e.g. using it in this way (make a jumper and take a bath? When I released the jumper, it immediately went out. Also, it seems to me that this is some kind of security. Is the possible replacement easy? Ie. isn't it somehow connected directly to the gas?

Added after 21 [minutes]:

I tried with a small screwdriver (for cell phone repair) to push whatever I could in the middle (with common sense) through that little hole on the left side. I have a feeling that something skipped over there, but was that it? There are various little plastic parts there and I'm not sure if I did it correctly.
Also, it seems to me that it will either be replaced or I did something wrong because it still does not work after connecting the microswitch.
There is no point in undressing it?
Maybe take a picture and say what and how?
If there is no other option - where can you buy it?
Thank you very much for help!

It is better to replace it with a new one - the cost is not great and it is sure that it comes much longer. You can buy it in an electronic parts store.

disassemble the micro.Rozbież-there are latches-gently with a small flat screwdriver underneath.Buy in an electronics store-cost about PLN 4. and it should be git. Ah, set the water flow to minimum. Nekars like not to work with higher water flow. And the micro is only from turning on the therma on the electric side. You can connect these wires and use, but only with the water turned on !!!!! !!!!!!!!!

Added after 2 [minutes]:

With the meter, check if the micro is closed, i.e. it makes a short circuit after pressing the micro. POZDRO

Check if the water fitting is dry, if it is leaking, you should replace it, because just replacing the microswitch
it will improve the operation only for a while, and a leak on the needle will damage the next microswitch. You can buy / only in the Junkers service / only the water fittings cover, it is worth buying a switch in the housing.

Yesterday I installed the new Neckar 19e, unfortunately it did not catch fire. Only adjusting the microswitch did the trick. In my case it was moved away from the diaphragm lever, so I had to move it from the battery to the right through the central hole in the microswitch housing.
As he mentioned before dolec1980 the stove works only at low flow settings, i.e. from half down to a minimum. If I unscrew the water in the bathtub, there is no problem with ignition, even at high flow settings on the stove. The problem arises when you set a high flow on the peicyku and use the tap in a small washbasin in the toilet. When open, even at full flow (pressure drop), it is too much for Neckar to fire.
Can it be solved with some kind of regulation, e.g. with a flow limiter?

greetings

The Neckar works with a minimum operating pressure of 0.2 bar, so it is adjustable. Read the instruction manual carefully. Everything is laid out there - coffee on the bench.

Hello, I have a similar problem as Syncro55. Well, the Neckar terma has been hanging in my place for 3 years and it worked "almost" flawlessly. The stove supports two batteries, one right under the therma (bathroom) and the other in the kitchen, maybe 2m of pipes (sic!) Warm water flows in this tap as before, but it has stopped reacting to turning on the water in the kitchen. Sometimes I have to turn on the hot water in the bathroom a little for the stove to react. The pressure is gone somewhere. Short-circuit tests of the switch confirmed insufficient pressure. I don't know what could have caused it, I only replaced the valve at the end of the pipe heh.
From the manual I can not really find out what to improve the input water throughput, because on logic it should help the membram.
PS I generally pay attention to the fact that having an old stove "made in komuna"
the water pressure was much stronger.
I am asking for tips
Greetings

To replace the batteries, you turned off the water in front of them, so you caused the muck to detach from the pipes and they clogged the filter, either in the thermal bath or in front of it. Clean and that's it.

Unplug the microswitch and connect the wire, if it works, replace it, if you do not check the overheating and chimney draft protections, if you are still nothing, you are out of luck (controller).

NECKAR N19E - gas junkers - does not fire, does not start - similarly, but I do not know if it is ?? !!

Hello,
Regarding the original topic of this discussion, I have an inquiry regarding the NECKAR N19E junker. At some point it stopped "igniting". I thought it was the battery, so I replaced it, but it did not help. The strange thing is that it suddenly stopped working even though the batteries were replaced not so long ago. However, when you turn on the hot water and press the switch button, the ignition starts, but in order for warm water to flow, it must be held. And now my question whether the problem may also result from a damaged microswitch. If so, I would ask for a bladder manual which cables should be shorted and whether in the microswitch after inserting a screwdriver something should be turned or just gently pressed. If it's not a microswitch, what could be the reason for this? I will be very grateful for your tips.

most likely your water pressure is too low

Rather small adjustment of the microswitch. If you feel up to it, dismantle it and move the "rack" to the left to make it catch faster. If this does not help, replacement of the regulator, cost about 150 + service, or as mentioned above, "aqueduct"

will warm the kotelet
I recently replaced the micro switch with everything beautiful.
But after 2.5 months, the problem returned and the cause of the microcircuit was also twisted after dismantling the white housing, I noticed that the miko was off. is wet! and everything around wet! Thanks to this water, the life of the micro-switch is significantly shortened. Where did this water come from?
what to tighten replace so that it does not condense on top of the microswitch

If there is water, the cover needs to be replaced.
At the service technician, the cover is 55 + microswitch 50 + service

microstock is not a problem to replace and next to the microstock to the left there are two screws I once loosened and tightened (as I did not know where the microstock is) please do not lynch me for arbitrariness, but maybe just tighten these screws tightly or replace the cover - is it a lot of work and a specialist is needed here, a friend is a plumber.

And where do you get the lid from?

I am supposed to understand that it is available only in the service and only the servicer can set it up

You understand well
So go to the website http://www.junkers.com/pl and look for the nearest service technician

Hello, I have this question, the stove fires up quickly and then for some time the green LED fades and the flame as if it faded and fired, it lasts for about 25 seconds, then it's ok
Do you have any ideas what is wrong

Hello, thank you very much for the information about this microstock. I was also dripping from under it. I bought a repair kit for PLN 65 plus a repair kit for probably PLN 55 (only the metal part to be inserted into this plastic body). When dismantling, it turned out that the diaphragm was also to be replaced. By the way, there are two membranes there. One black at the gas section and the other yellow at the water section. Thanks to you, the stove has come back to life. Regards. David Bittner.