Well, I had a brand new Vaillant Ecotec Plus 831 boiler fitted 3 years by a corgi registered person after my old boiler had its days after 15 years.
Since that day I have had nothing but trouble with the boiler.
After 4 weeks of fitting the boiler it started to make a lot noise, then temperature on the boiler should it went to 74C then cut off. It then bought up an error of f23.
We rang up Vaillant as it was under guarantee. The Vaillant engineer came and said the secondary heat exchanger had blocked up because the system has not been flushed properly. The engineer opened up the boiler and cleaned out the heat exchanger in front of us. It had black bits in the 2 holes which are linked to the radiator system.
So we then rang the person who fitted the boiler. He firstly denied it was his fault. Saying he had already powerflushed the system when fitting the boiler. We got the manufacturer to ring him. He then rang us back saying he would do a powerflush a second time but after that if anything happened it would not be his fault.
So the boiler person came and powerflushed the system, he spent the whole day doing it. Going to each radiator turning the valves on and off.
Then after 2 weeks the boiler started to do the same thing as before stopped working. So we got some other plumbers to give their opinion.
One said fit a Magnaclean. So we fitted a Magnaclean. But still the boiler had same trouble of heat exchanger getting blocked.
Another plumber said fit a Y strainer. So we fitted a Y strainer. Still we had the same trouble.
Another plumber said fit Auto valves on the highest points, so you don’t have air in the system. We did that but still had the same trouble.
We then rang Vaillant to say that we are still having the problem. The engineer came back, showed us the black bits coming out of the heat exchanger. He said one of radiators must be corroding that is why the stuff keeps coming.
So then we changed all the radiators. And now still we have the same problem and also the guarantee has finished so i can’t go back to the manufacturer. It has just become one big headache. I feel like throwing the boiler out.
Some more information:
I contacted magnaclean, and there system doesn’t seem to capture all the magnetic bits because the water comes in at such high pressure and they are so small. Also the y strainer doesn’t capture the bits as they are so small. It seems the secondary heat exchanger collects all the small bits and they become big bits and block up the heat exchanger. The bits are magnetic, I tried it with a magnet.
Over the 3 years i have put the following cleaning agents and inhibitors into the radiator system to solve the problem but none of them worked fernox f3 cleaner, fernox f3 superconcentrate central heating cleaner, fernox f1 superconcentrate central heating protector, Sentinel x400, Sentinel x100, B&Q cleaner, B&Q inhibitor.
Once the pressure is filled in the radiator system it doesn’t lose pressure.
The bits in heat exchanger are big black and magnetic. The bits on the magnaclean are fine soot like.
So has anyone got any solutions to why this is happening and what is the solution?
I really need your help!
Since that day I have had nothing but trouble with the boiler.
After 4 weeks of fitting the boiler it started to make a lot noise, then temperature on the boiler should it went to 74C then cut off. It then bought up an error of f23.
We rang up Vaillant as it was under guarantee. The Vaillant engineer came and said the secondary heat exchanger had blocked up because the system has not been flushed properly. The engineer opened up the boiler and cleaned out the heat exchanger in front of us. It had black bits in the 2 holes which are linked to the radiator system.
So we then rang the person who fitted the boiler. He firstly denied it was his fault. Saying he had already powerflushed the system when fitting the boiler. We got the manufacturer to ring him. He then rang us back saying he would do a powerflush a second time but after that if anything happened it would not be his fault.
So the boiler person came and powerflushed the system, he spent the whole day doing it. Going to each radiator turning the valves on and off.
Then after 2 weeks the boiler started to do the same thing as before stopped working. So we got some other plumbers to give their opinion.
One said fit a Magnaclean. So we fitted a Magnaclean. But still the boiler had same trouble of heat exchanger getting blocked.
Another plumber said fit a Y strainer. So we fitted a Y strainer. Still we had the same trouble.
Another plumber said fit Auto valves on the highest points, so you don’t have air in the system. We did that but still had the same trouble.
We then rang Vaillant to say that we are still having the problem. The engineer came back, showed us the black bits coming out of the heat exchanger. He said one of radiators must be corroding that is why the stuff keeps coming.
So then we changed all the radiators. And now still we have the same problem and also the guarantee has finished so i can’t go back to the manufacturer. It has just become one big headache. I feel like throwing the boiler out.
Some more information:
I contacted magnaclean, and there system doesn’t seem to capture all the magnetic bits because the water comes in at such high pressure and they are so small. Also the y strainer doesn’t capture the bits as they are so small. It seems the secondary heat exchanger collects all the small bits and they become big bits and block up the heat exchanger. The bits are magnetic, I tried it with a magnet.
Over the 3 years i have put the following cleaning agents and inhibitors into the radiator system to solve the problem but none of them worked fernox f3 cleaner, fernox f3 superconcentrate central heating cleaner, fernox f1 superconcentrate central heating protector, Sentinel x400, Sentinel x100, B&Q cleaner, B&Q inhibitor.
Once the pressure is filled in the radiator system it doesn’t lose pressure.
The bits in heat exchanger are big black and magnetic. The bits on the magnaclean are fine soot like.
So has anyone got any solutions to why this is happening and what is the solution?
I really need your help!
