37 CDi Intermittant problem

[tamz]

I'm posting this for another member who cant get it to post a new thread


Hi
For some reason it will not allow me to post a new thread something to do with 'permissions'. So I am desperate for help for this problem:
I have a 4 year old Worcester Greenstar 37CDi combi boiler. Two years ago it stopped working, always intermittent problems and would not re-set. It shows the error message EA. Two years on my very sympathetic boiler repair man has replaced the electrodes, gas valve (4 times) and the motherboard. He has yet to charge me a penny as it still doesn't work. It can go for days, sometimes months and then will fail and not re-set. We are on the verge of replacing it altogether despite the cost of the new parts now in it. Worcester cannot suggest anything else and we are at a loss as to what to try next? Advice please.

LouiseinBath

 

[SimonJohns]

Possible reverse polarity
Condense blocked
Low gas pressure

One of them weird ones

 

[tamz]

Also has he checked the governor at the meter is not locking up.

 

[Roger Welton]

Wiring harness or earthing issue?

 

[Millsy 82]

I went out to 1 with EA code turned out to be a plume kit had become partially disconnected where it went outside so when it was running all the fumes were being pulled back into the boiler and when it was on high flame for long enough it would starve it of air. Is it vertical flue? What are the CO2 readings with the casing on.

 

[LouiseinBath]

Hi there. I'm not the expert but I can see that the flue is not vertical as it goes straight out of the wall. The only co2 reading I have says - 9.4% but I don't know if that was with the casing on. I have little print out of readings. Thanks for your help so far.
Louise

 

[mfgs]

Get worcester out for a fixed price repair maybe? Will be cheaper than replacing the boiler. I cant remember how much it is but its got to be worth giving them a call to see.