Boiler not firing up

[fabian]

I have renewed the fan on my Potterton Profile boiler and now there is no ignition .the fan connections are in the right order. the pressure switch clicks in but the gas does not light up. all the covers are in place. can anyone tell me what I should do next please.

 

[namsag]

presure switch tubes split or on wrong.

What was original fault

 

[fabian]

presure switch tubes split or on wrong.

What was original fault

original fault was humming noise from boiler, traced to fan, checked pressure sw. tubesthey were not removed and are ok.

 

[kevplumb]

is the pilot lighting or trying to

 

[bengasman]

Does it spark at all?

 

[gassafeman]

You havent fitted a fan for a 30-60 if you have an 80 or 100 have you?

Mind you, youd have to drill a hole in the plate the fan sits on to have done that! Even you had done that, the P/S wouldnt operate.

Paul

 

[fabian]

Thanks for replies, correct fan for profile 60e fitted-no pilot light-no spark

 

[bengasman]

New fan, aps switches but no spark
Probably standard suprima problem: dead pcb.

 

[Boilerman2]

It would be if was a Suprima!!

Your Profile is showing classic APS symptoms, the fact that you hear the switch click is no indication that it is working electrically, this would have to be proved with test equipment and is well beyond a DIY task.

You really can't guestimate these sort of faults, it is important to work in a logical, methodical manner, using knowlege and experience along the way

thats why you need a RGI

 

[bengasman]

It would be if was a Suprima!!

Where's me reading specs, dammit, can't see my reading specs.

 

[Boilerman2]

I've just stood on mybeofa823obl;

 

[fabian]

good point! have been using fluke multimeter to check circuits, a/p switch has contacts 1(normally closed) 2(n/o) and3(c) if I test between 3 and 1 and 3-2 that would tell me if the switch was ok

 

[gassafeman]

You do have the case on properly dont you?

This all leads to an APS fault, but I have had a few when the pcb was at fault.

Paul

 

[bengasman]

good point! have been using fluke multimeter to check circuits, a/p switch has contacts 1(normally closed) 2(n/o) and3(c) if I test between 3 and 1 and 3-2 that would tell me if the switch was ok

Not sure what connection is what in your case, but in general it is quite simple.
Test 2 contacts on continuity, if no sound, blow on pipe and hear beep. Change one of the contacts and hear beep, blow on pipe and silence. The remaining 2 won't beep no matter what you do.

 

[fabian]

good point! have been using fluke multimeter to check circuits, a/p switch has contacts 1(normally closed) 2(n/o) and3(c) if I test between 3 and 1 and 3-2 that would tell me if the switch was ok

Not sure what connection is what in your case, but in general it is quite simple.
Test 2 contacts on continuity, if no sound, blow on pipe and hear beep. Change one of the contacts and hear beep, blow on pipe and silence. The remaining 2 won't beep no matter what you do.ote]
Hi and thanks, there is a red and clear plastic pipe.I removed the clear and tested as instructed.(I removed the pin plug from the pcb) there was a continuous beep which blowing down the pipe did not clear?? hope you bear with me on this.