On one thing I can agree
Sedbuk is a waste of time
I think the point you are trying to make oilman is lost in the fact that the running costs for a non condenser will always be higher.
I don't need SEDBUK or anyone else to dictate efficiency figures to me. My flue gas analyser tells me...
I see your point Ollski
I don't really care who follows my advice on oil heating issues, that's up to them but one thing is for sure, My back is covered, and I am an oil heating professional. There is a strong culture of blame these days and it doesn't hurt for us all to be aware of it.
My...
Thermecon - cheap n` nasty
Ecoflam burner - cheaper and nastier
I refuse to service these boilers
You got it right the first time - Grant Vortex, cracking piece of kit
These units have a pressure relief valve fitted, could be stickin, could also be that the gas valve is stickin, wether it is or not it shouldn't be producing steam, scrap it and get a new one.
This is Trianco's down firing floor standing boiler with a D42 Inter 10 burner (orange usually) if black it's an Inter 99
Possibilities
Photocell, as you say
BHO control box
Windings breaking down on the motor
Combustion chamber and flueways sooted up causing oxygen starvation...
If you offer advice on a forum like this you are leaving yourself wide open. If you give advice to someone who follows it and as a result a fatality occurs, when it gets to court, and it will, you will be expected to qualify your advice and prove your experience and expertise in the subject you...
OK
Place something flat, like a spanner, on the top of the pin and hit the spanner (not too hard) directly over the pin with a small hammer about the weight of a medium sized pair of pump pliers. Keep doing this until you hear the seat of the valve break free and see the pin pop up again...