Baxi combi whistling

[trevorbayliss]

I have a 2 y/o baxi combi under a 7 yr guarentee.

The boiler is working fine, but on start up it does whistle quite a bit. Plus there is a fair bit of gurgling going on. The whistling went away after about 15 mins.

Baxi are coming on friday to have a look.

Is this likely to be an issue with the secondary heat ex ?

I cleaned the filter out the other day as well and the water was fairly brown. I thought the system was supposed to be clear. I am thinking not enough inhibitor has been added on instal. It was done under the replacement boiler scheme. The system is a big one as it has 14 radiators running off it, all bigger ones (except the two bathrooms). Would this need two bottles of inhibitor ?

 

[Stadan20]

Let me guess your boiler is a duo tec and does it when you run a hot water tap ?

 

[trevorbayliss]

it is a duo tec, and i will need to test it when it does hot water. Any ideas what the issue is ? Is this just how they operate.

 

[Stadan20]

Cold inlet cartridge needs replacing

 

[trevorbayliss]

Ok, but my issue is when the boiler starts up and it whistles. This is nothing to do with the cold water feed.

 

[Stadan20]

Well if it does it on heating also I would suggest you get the boiler checked over but if it's only on hot water then I will be right

 

[trevorbayliss]

The engineer came out and thinks it is the burner as only happens when fires up and for the first 10 mins. So the burner is being replaced next week.

 

[Steelmasons]

The burner isn't the problem.

 

[trevorbayliss]

Ok so what is the problem and why will baxi change the burner ?