Vaillant vcw 242 e no CH

[mouse2674]

what does the anti cycling device do? And do i go plus or minus?

 

[Ihavenojob]

it delays the boiler firing when the boiler stat swithes off&on again, - is a shorter delay,turning the power on&off or using hot water overrides it.

 

[mouse2674]

That makes sense of when I lose power to PCB board using red button any latching relays or timers drop out and boiler starts o.k.!!Is it the top PCB with the couple of relays on it do you remember

 

[Ihavenojob]

Theres 2 types of control,hybrid&non hybrid.Pull off thermostat knob,if spindle is white its hybrid & you want electronic pcb part number 252957, any other colour spindle is non hybrid & you need thermostat pcb,dont know number of this one

 

[mouse2674]

Nice one I will try the diverter clean first then order this pcb tomorrow Thanks

 

[Bunnyman]

Please mate don't touch divertor total waste of time they never fail , if look on pcb just to the lhs of the wiring block u will c a 2 pin plug if it's on 2 put it on 1 an try again, it does sound like a time delay fault post ur reply

Untitled

• Bunnyman
• 26 Mar 2010
• 499

 

[mouse2674]

Just got in after morning Playing with boiler bunnyman you were right diverter valve was a waste of time!!only read your post 2 minutes ago though doh!!Which board? there are 3 I think had them out today to check any loose connection dry joints etc.And when you say connector on 2 is this a number on the board/connector and there is another empty connector beside it or is it a dip switch? My board has a brass stem on the thermostat dial if this helps.Looked at some pics on web of card think I know what I am looking at now .What will moving this plug do remedy the fault or just take the delay out all together ?

 

[mouse2674]

Was the plug white and it connects in a triangular formation?It was in II then connected to I.The boiler fired up ok when thermstat turned off boiler the pump just ran on let it run for about 3 minutes then switched off on controller.Switched back on and the pump just ran and the boiler never fired up.Hope this is what you were expecting Bunnyman!! I wait for the next move with baited breath!!!!!Thanks Paul.

 

[mouse2674]

Quick question are the PCB boards common throughout all 5 of the Combicompact VCW Range?Or in particular the one it looks like I need ?Cheers Paul