Oil Boiler Fault

[washer]

A year ago I moved into a property which has an oil boiler, and I am now in the fustrating position with it developing an intermittant fault, although I am GSR and am more than happy fault finding on gas boilers, I do not know the sequence of operation on oil boilers.

If anyone could perhaps give me a couple a pointers, I would appreciate it, I stress that I will only fault find with a multimeter, and if any parts need replacing, I will get the bloke who serviced it last to fit if needed.

The boiler is a Worcester Danesmoor 12/14.

All controls are working fine, pump is running but only circulating cold water, no lockout light on the boiler, and increasing the boiler stat does nothing.

The only way it will restart, is turning the fuse spur off and then turning on again.

Happens about every couple of weeks, so of course if I did get an OFTEC engineer to have a look, you can guarantee it will work fine.

Cheers

 

[kimbo]

Is the burner going at all, and when does this occur, last thing at night or any time etc. It may be the control box.

 

[washer]

It does seem to happen mostly at the first demand in the morning, the burner isnt on. A dodgy control box, doesnt sound like something easily checked?

 

[kimbo]

You need to first check that you have a live feed to the burner if there is a live feed is there a buzzing noise it could be the capacitor need to be methodical difficult to say without checking things through.

 

[washer]

Cheers, gives me something to go on when it next packs up.