Potterton 105 e hot water keeps cutting out

[Fredb125]

Hi,newbie here sorry if it has been covered but my 105e when turning on the hot water runs for approx 20 secs then goes cold for about 10 then kicks back into hot ,the central heating seems to be beahaving ,
Changed the diverter valve diaphragm and temperature sensor and the pcb board after reading on forums.now it seems like relay rl1rt is clicking in and out and the flashing led is for the central heating sensor .
Any help would be appreciated as have 2 young children in the house
Thanks

 

[Gas2Air]

I love people like you.

 

[Fredb125]

Why do you love people like me please

 

[Gas2Air]

8)

 

[Gas2Air]

Ok, what forums have you read? Let's start from the beginning.

 

[Fredb125]

Can you help at all.

 

[Gas2Air]

Yes. When have these parts been changed? For a similar fault? I'm giving you free advice please bare with me I can't see your boiler.

 

[Fredb125]

All today
We had insurance from Scottish power whom I feel they are not holding there end of the deal up
They said the diverter valve was us and the boiler was furred up but it was inspected for the insurance 3 weeks ago
We have the platinum of which is supposed to cover everything but my misses is having arguments with them bu in the mean time we have the issues with the boiler
Thanks fo replying

 

[Fredb125]

Worse thing in the world I googled it and went from there
Looked at a few forums and they mostly said the diaphragm and the sensor of which were cheap fixes,the pcb was £50 from eBay from a company in Wembley of which is guaranteed

 

[Gas2Air]

You replaced these parts? Scale and sludge isn't covered in any home policy from the big companies. Why should it!

 

[Fredb125]

Yes I replaced these parts the system is not scaled or slugged up.it was checked the other week by the Scottish gas engineer,and we recently have had the whole system flushed as had radiators fitted back in November

 

[Gas2Air]

So why is a Scottish engineer saying it's furred/clogged up?

 

[Fredb125]

The engineer did not even strip anything out as I said I don't trust them
There have been a lot of problems with them if you google Scottish gas .
But it still does not help me with this problem of no hot water

 

[Fredb125]

The fault is still there from day it became faulted

 

[gas112]

Out of the 3 parts you have fitted it could only possibly have been one of them so god knows what advise you have read.
IF the red neons are going all the way up before the boiler cuts off then your plate heat exchanger is scaled up remove it and clean it with brick acid or spirit of salts .
Do search it has been explained in here loads and loads of time