Vaillant Eco Combi Boiler leak

[johnpaddy]

Good morning, I woke up today to find that my Vaillant Eco Combi boiler was displaying a F22 fault. I referred to other posts on this forum and topped up the pressure using the two grey toggles on the bottom. The pressure gauge is now pointing mid way up the grey bar and the central heating and hot water are running fine now but water is discharging from a narrow plastic pipe which comes out at the bottom right at the rear of the boiler.

It appears to only do this if the hot water is running and not when the central heating is on. Can anyone tell me what may have caused this and if it's something I can fix without calling in an engineer?

Great forum, thanks for the advice and keep up the good work!

 

[YELLERBELLY]

the plastic pipe is the condense,it may be blocked,check where it goes

 

[spudly1]

f22 is a low pressure/dry burner code that plastic pipe is your condensate which may be frozen in cold weather which is backing up and causing to leak. i think some vaillants will only condensate on hw mode this is why it,s leaking only when you use hot water try pouring kettle over plastic pipe if its outside or use a hair dryer if it is inside common sense

 

[johnpaddy]

Thanks folks, I'll get the hair dryer out when I get home