Boiler ignition failer

Sounds like an old boiler. It is not on timer and has to be lit manually. Push in the gas button and hold and push the sprung ingnition button to greate spark. Continue to hold in gas button 1-2 mins and release. The pilot light should then stay on. The flame will have heated the sensor in the combustion chamber and the boiler thinks that there is a flame and will allow the main gas jets to light when demanded . If the flame does not stay on clean the sensor prongs with emery cloth but do wait until they are cooled. You have open up the combustion chamber for access
The 1-2 mins above varies

Is there gas cause most of the time it won't ignite cause there is no gas. What you can do is light it your self and if it lights that is good and if it stays light than there is has sometime you have to light it your self

Parts list:
http://www.hotwater.com/lit/partslists/197728-004.pdf
Flame rod, flame sensor sits next to igniter inside combustion chamber. This can be cleaned with sandpaper. Do not touch with fingers. Purpose of flame rod is to detect whether ignition has caused actual, sustainable fire inside the combustion chamber.
If sensor is bad, or no ignition is detected after 2-3 attempts, then 'no ignition' error is given.
Bad gas control valve, bad-or-dirty flame rod-sensor, low gas pressure, misaligned rod, dirty combustion parts, etc

Service handbook:
http://www.hotwater.com/lit/training/316586.pdf
High gas pressure spikes can daMAGE gas control valve p7

Product manual:
http://www.hotwater.com/lit/im/com_gas/197727.pdf
Word-search for 'failure'
Low gas pressure. p14 and p54
1-3 trials before declaring 'ignition failure. p48
bad flame sensor (clean with sandpaper) #10 p58
unit must be grounded (check outlet with circuit analyzer) #12 p58
Sequence flow chart p59
Rough starts = ignition failure p60
Troubleshoot chart - ignition failure p62

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Difficult to get too specific without knowing if you have gas or oil. Also, I am going under the assumption you mean the burner shuts down, not the whole heating system. That being said, all heating appliances have whats called a safety curcuit. Each control has the ability to shut down if certain critera are not met. There is a sensor that senses light down the blast tube. If no light is sensed in a predetermined time period, then the sensor cuts power to the burner. This stops delivery of fuel so if it does ignite you wont blow up.
(I suspect that the ignitor and burner shut down simultainously.)
It may be the sensor (cad cell eye) is doing its job, however why is the question. Could be a number of things including the fuel delivery, ignition, improper air adjustment, etc.
No qualified professional should diagnose a problem unless they are in front of the appliance. I recommend you find a licensed qualified heating techician. Hope this helps.

have you checked that you thermostat on wall is set to a reasonably high temp. if not when room eaches temp setting , then the boiler will switch off,. Other than this obvios one , i would suggest you could google your boiler for the manual /instruction.


Parts For Porsche Cayenne

could be air presure switch which tells pcb that fan is working and would then bring inn ignition system then main gas valve.Would suggest getting gas engineer in.pommie engineer

Could be the flame sensor is bad,it looks like a thermocouple scratch it with a knife then try again.

Pressure is ok? at 1 bar or above
I think on this one there should be a reset button [red] on the left hand top of the casing - or lower the control panel [ phillips screw on each side] and the button is on the left of the base plate. Press this and try the heating.or hot tap
P.S. if you're on a prepayment meter check you have gas.

need to have it cleaned alsp maby fulty thimastat