Worcester 28i - no heating

[JSM87]

Hello guys

I have a Worcester 28i central heating system.

Yesterday I came home to find the house was freezing with no central heating and no hot water. It had been left on while I was out in full working order so its not as if I had manually done something to trigger a fault.

• It powers on
• There is a red LED indicator to say its powered on
• There is no noise other than the timer clicking for around 5 seconds when its powered on, then it sounds as if its trying to ignite at which point it makes a bit of a rumble but not the normal rumble it used to make which would be the gas ignition.
• the pressure is at 1.5
• I've bled all radiators (3 radiators had air in them but fine now)
• When I turn the hot tap on there is a clicking noise that clicks once, I think this is the spark maybe. If im right in saying its as if its trying to spark but doesn't ignite hence no big rumble noise.
• Im unable to re/de-pressurise the system above or below 1.5 as when I repeat the pressuring method it doesnt budge. Whether this is because it is already fully pressurised I don't know, but just thought Id mention.
• Our gas fire and cooker work fine

Can anyone help. I'm happy to try out any suggestions.

Whoever can lead me to a resolution is a hero.

 

[gasmarc]

try switching the power on and off a few times

 

[JSM87]

Yeh tried that numerous times, doesnt kick anything into action.

 

[gasmarc]

is it a condensing boiler

 

[Blackcatgas]

Frozen condensate pipe.

 

[Blackcatgas]

Strangly enough most of frozen condensate pipes Ive ever had are on Worcesters either they are very popular or they run very efficiently and make lots of condensate.

 

[gasmarc]

well thats what I am thinking I havnt had I call for a frozen condensation pipe yet

 

[JSM87]

Frozen condensate pipe.

Wouldnt it have melted by now... its actually not that snowy/cold over here...

How can I check it never the less?

 

[Blackcatgas]

Wouldnt it have melted by now... its actually not that snowy/cold over here...

How can I check it never the less?

I dont know, its still icy here. Is the pipe external?, go and feel it.

 

[gasmarc]

just disconnect plastic nut on the left hand side of boiler and see if water comes out if it does it could be blocked

 

[JSM87]

I dont know, its still icy here. Is the pipe external?, go and feel it.

Pipe is external, its cold but wouldnt say freezing. Anyhow, I have poured hot/warm water over it to warm it right up, it was was froze, it isnt now

Still no heating

There a 2 rubber hoses inside the system, red and white. Blowing down the red one does some to trigger something and seems to kick start the spark to click for about 10 seconds trying to ignite, it doesnt, but the red pipe blow trick does definitely do something

 

[Blackcatgas]

Pipe is external, its cold but wouldnt say freezing. Anyhow, I have poured hot/warm water over it to warm it right up, it was was froze, it isnt now

Still no heating

There a 2 rubber hoses inside the system, red and white. Blowing down the red one does some to trigger something and seems to kick start the spark to click for about 10 seconds trying to ignite, it doesnt, but the red pipe blow trick does definitely do something

Lol, oh dear.......

 

[hydrotherm]

Went to two worcester bosch breakdowns today, both with frozen condensate pipes, one vaillant yesterday showing F28 fault code which should mean gas fault but it was frozen condensate again

 

[hydrotherm]

went to two worcester bosch breakdowns today both had frozen condensate pipe fault, same rumble sound