Potterton Profile 50e not sparking

[Michael29068]

Was the APS from a working boiler?

I have not got back to this boiler yet, when I do I am going to try a used PCB first and maybe then a used APS which I have taken off a working boiler which I have replaced with a new high efficiency condensing boiler. I have already blown down the APS tubes.

 

[ShaunCorbs]

did it fire?

 

[Michael29068]

did it fire?

did it fire?

No, it did not even start to spark.

 

[ShaunCorbs]

No, it did not even start to spark.

so that means it didnt sense the fan was running

 

[Michael29068]

so that means it didnt sense the fan was running

I dont know as I did not Voltage on T2 and T4 connections at the time

 

[Michael29068]

I dont know as I did not Voltage on T2 and T4 connections at the time

I left out word "check" between not and voltage

 

[SavageW]

Not 100%sure but Is there a Venturi on aps tube before aps, if there is check this? You may have already by passed this by blowing down the aps if you went straight on to the positive connection on it.If so got to be slow running fan or flue.
Had ridiculously high emissions from profile before an I put it down to glue & turned out to be slow running fan, could be same in your situation but the fans got to point where it won’t even operate the APS

 

[Michael29068]

Not 100%sure but Is there a Venturi on aps tube before aps, if there is check this? You may have already by passed this by blowing down the aps if you went straight on to the positive connection on it.If so got to be slow running fan or flue

 

[Michael29068]

Not 100%sure but Is there a Venturi on aps tube before aps, if there is check this? You may have already by passed this by blowing down the aps if you went straight on to the positive connection on it.If so got to be slow running fan or flue

I have checked the Venturi and it is not blocked, have alsolconnected a tube externally to APS to activate it

 

[SavageW]

Sounds more like APS then mate,can’t remember but is it a 3 wire or 2?
*just read you’ve already tried a new one,I’m out of ideas but be interesting to know how you get on