Worcester 28iRSF no CH but yes hot water

[freezemon]

HiCan anyone please help?? Worcester 28i RSF Combi is not working properly there is NO Central Heating but hot water is still working fine. Few day ago the water pressure keep fluctuating. We change the turbine flow switch ( similar to diverter valve) and still no luck. We think it might be the PCB but not sure and do not want to spend so much and find out it is not. Any suggestion and can anyone help PLEASE!! THANKS!!

 

[bengasman]

Does the boiler react at all to timer and roomstat coming on with lights/clicks/fan/pump?

 

[freezemon]

Does the boiler react at all to timer and roomstat coming on with lights/clicks/fan/pump?

Yes we have check the thermostat seemes to be fine. When turn on hot water tap everything seems to be working fine but not CH switch turned on, thermostat been set to call for heating and connection is fine.

 

[freezemon]

Does the boiler react at all to timer and roomstat coming on with lights/clicks/fan/pump?

Yes we have check the thermostat seemes to be fine. When turn on hot water tap everything seems to be working fine but not CH switch turned on, thermostat been set to call for heating and connection is fine.

Sorry for the wrong answer earlier...LED is on ..Few days ago we heard a click and pump, fan and lights came on but only for few minutes and then it went off.

 

[bengasman]

How did you test that timer, roomstat and connections are ok?

 

[bengasman]

Sorry for the wrong answer earlier...LED is on ..Few days ago we heard a click and pump, fan and lights came on but only for few minutes and then it went off.

Which led?
Do pump and fan still come on?

 

[freezemon]

How did you test that timer, roomstat and connections are ok?

Thanks for your prompt reply. I pressumed the timer is on the boiler we had the switch on on constant and not on auto. The roomstat we installed a digital one and when heating is called a flame icon comes on the screen. Which it is showing at the moment. Do you think it could be that? Will recheck it now and it might be BINGO...

 

[bengasman]

Drayon digistat by any chance?

 

[freezemon]

Thanks for your prompt reply. I pressumed the timer is on the boiler we had the switch on on constant and not on auto. The roomstat we installed a digital one and when heating is called a flame icon comes on the screen. Which it is showing at the moment. Do you think it could be that? Will recheck it now and it might be BINGO...[/quote]

Forgotten to mention that the water pressure is holding since we change the flow switch.

 

[freezemon]

Drayon digistat by any chance?

No it is Hortsmann.

 

[freezemon]

Sorry for the wrong answer earlier...LED is on ..Few days ago we heard a click and pump, fan and lights came on but only for few minutes and then it went off.

Which led?
Do pump and fan still come on?

No not anymore...

 

[bengasman]

Is it wired, or rf?
Flame on display only tells you the stat calls for heat; it doesn't mean that the boiler actually gets that signal.
You need to find out if the stat/timer connections on the boiler get a signal.
You have to know what you are doing as you are dealing with 230 volt.

 

[freezemon]

How did you test that timer, roomstat and connections are ok?

Thanks for pointing out about the roomstat will try to disconnect that and see whether it works as normally there is a click sound together with the flame icon but no click sound heard...

 

[freezemon]

Is it wired, or rf?
Flame on display only tells you the stat calls for heat; it doesn't mean that the boiler actually gets that signal.
You need to find out if the stat/timer connections on the boiler get a signal.
You have to know what you are doing as you are dealing with 230 volt.

Disconnected the digi roomstat from boiler but still not working..

 

[bengasman]

Disconnected the digi roomstat from boiler but still not working..

What did you do to compensate for disconnection of roomstat?