Gents
This is my 1st post so please be gentle with me.
Vaillant VCW242E won't ignite, fan runs, diverter operates, pump runs, ignitor can be heard clicking (and seen sparking) and the piston operates on the differential valve (it was a bit dirty inside so cleaned the rust out, diaphragm is fine) and I've got 21v across the 2 wires for the gas operator.
Using this diagnostic http://www.acwilgar.co.uk/Boiler-Ma...t and thermocompact logical fault finding.pdf indicates the operator is at fault so I bought a new one, still no ignition.
I tested the solenoid coil on the new operator which gave infinite resistance, so the new one is defective right? Out of curiosity I removed the 4 retaining screws and eased the operator away from the gas section which allowed me to depress the spring loaded plate and hence the needle with my finger tips, hoping this would allow things to work (just to prove that there wasn't another problem, perhaps diaphragm pump?), still no joy. does the operator have any other function than to move the needle?
It's a given that I need another operator 'cos both old & new are toast, is there something else I should be looking at? Is something blowing the solenoid coil as soon as it powers up? Bearing in mind both the diagnostic and Vaillant handbook say 20v where I've got 21v.
Any help or suggestions gratefully accepted thanks
Max
This is my 1st post so please be gentle with me.
Vaillant VCW242E won't ignite, fan runs, diverter operates, pump runs, ignitor can be heard clicking (and seen sparking) and the piston operates on the differential valve (it was a bit dirty inside so cleaned the rust out, diaphragm is fine) and I've got 21v across the 2 wires for the gas operator.
Using this diagnostic http://www.acwilgar.co.uk/Boiler-Ma...t and thermocompact logical fault finding.pdf indicates the operator is at fault so I bought a new one, still no ignition.
I tested the solenoid coil on the new operator which gave infinite resistance, so the new one is defective right? Out of curiosity I removed the 4 retaining screws and eased the operator away from the gas section which allowed me to depress the spring loaded plate and hence the needle with my finger tips, hoping this would allow things to work (just to prove that there wasn't another problem, perhaps diaphragm pump?), still no joy. does the operator have any other function than to move the needle?
It's a given that I need another operator 'cos both old & new are toast, is there something else I should be looking at? Is something blowing the solenoid coil as soon as it powers up? Bearing in mind both the diagnostic and Vaillant handbook say 20v where I've got 21v.
Any help or suggestions gratefully accepted thanks
Max