Evening,

 

My neighbour has a problem with his boiler and I just wondered if anyone has a clue about it. The boiler is a Ravenheat CSI 85A - CSI 85AT (numbers from the user manual) and it's a condenser combi. The hot water works fine but the heating just won't fire up at all, the timer light comes on but absolutely nothing happens. The dials are in the right position for hot water/heating and have tried the reset button but nothing.

 

Any ideas?

 

Cheers

 

Vijay

Apart from it being a crap boiler it may be the diverter valve that's stuck if the heating has not been on all summer.

Would that cause it not to fire up at all when the central heating is switched on? It's not been on all summer.

got the same craapy boiler even though they use worster bosh components come from b&q have you tried switching it on manually override

Do you mean with the timer? If so yeah, the light comes on but that's it

If the diverter valve is stuck it will not push the pin out to activate the microswitch and run the pump.

Cheers bud. I'll let him know but think he's just gonna have to get an engineer out. He called one place and they wanted £80 call out and they're local :shock:

ring british gas they do a one price repair, if its expensive then its a winner, if it needs a tap with a hammer then you have missed out, they also dont charge a call out and they dont charge if they dont repair

i would say its the diverter valve too, if they use worcester's valve this is very common they are crap i have had call out to five new boilers with this problem

how much pressure in the system u got there ?? usually depends on the size on the house . minimum id recomend 1 bar

over 1 bar

over 1 bar

 

how many radiators ??

I'd imagine 7 or 8

I'd imagine 7 or 8

 

try to increase the presure to 2 bars as i had similar problem at one of the jobs ive done .and as i increased presure boiler start working strainght after ..

I'll let him know tomorrow. Cheers :)

here is a fault finding chart it on page 44

http://www.ravenheat.co.uk/pdf/manuals/CSI85A(T).pdf

Cheers bud but I think I'm gonna have to leave it and let him get someone in, was just hoping it may have been a simple known fault.