Worcester 28cdi Greenstar Compact

[chirpychippy]

Hello Ianmcd, don't know how to copy and paste!! No, the condense pipe is run internally and attached to the waste below the sink trap. I am aware they can freeze if run externally during the colder winter months.

Gasguru, That really is a Chicken and Egg question. All I know is that the back of the boiler cover was saturated and as the solenoid to the Gas Valve is quite close to this cover then it really isn't unthinkable that the water could have created the problem.

I would never question my plumber he is extremely experienced, he had the foresight to ring Worc Technical to make sure he was testing the correct cables and to ask what the resistance Parameters were for the Solenoid on the Gas Valve, the manual supplied with the boiler isn't helpful.

The diagrams??
Incidentally the plumber that repaired the boiler wasn't the plumber that installed the boiler.

 

[ianmcd]

Hello Ianmcd, don't know how to copy and paste!! No, the condense pipe is run internally and attached to the waste below the sink trap. I am aware they can freeze if run externally during the colder winter months.

No mate reason I was asking, is I see a lot that are connected externally, and not frozen but with heavy downpours the rain water can back up into the boiler, hence why WB insist on an air break to stop this

 

[martyndc88]

How?

Rain hits baskets and drips down off it instead of hitting the flue terminal. It works

 

[martyndc88]

Did water ingress really kill the gas valve or just coincidence?
Was the combustion chamber actually flooded?

Those Sit valves are pretty reliable and AFAIR operate at 24Vdc and it's raised above the base of the chamber so should be protected from flooding.

Not convinced by your "plumber"...the diagrams tell you all you need to know.

240v gas valves on the compacts and they're prone to burning out

 

[ianmcd]

240v gas valves on the compacts and they're prone to burning out

correct it uses the Sigma 848 230V AC gas valve

 

[dilalio]

Rain hits baskets and drips down off it instead of hitting the flue terminal. It works

OK. Sounds plausible. And defo worth a shot before seeking more involved fixes!

 

[chirpychippy]

Thank you , off to buy a basket then...thank you everyone Merry Christmas...