Volkera Compact - Green flashing light

[RainTown]

Hi

i have circa 15 year old Volkera Compact 24 boiler, seems almost sane as:

Plumbase Manuals

it is in my kitchen, next to it external 24hr timer and power switch, with thermostat control in hall.

i was changing the on/off hours on the timer, and now boiler won’t go on for central heating. At all, whatever I set on timer or thermostat. the timer still audibly ticks. The power switch powers boiler, timer, and I presume thermostat.

When powered on the Green LED flashes slowly. I understand this means boiler is in standby.

Turn on a hot rap, boiler starts up ok. Stops when hot water no longer required.

I think I’ve tried reset a few times, though precise procedure here isn’t clear.

Pressure is around 2 bar.

when I move the CH control around on boiler, the green LED flashes rapidly for a few seconds.

But LED on thermostat never lights up, and boiler never starts up, whatever setting I set on timer.

from reading here and elsewhere this looks like a connectivity problem with external timer/thermostat?

is there any straightforward way to confirm this ?

if so, is an electrician the right tradesman to contact first?

Thank, RT

 

[CBW]

What thermostat do you have?

 

[RainTown]

Not at the property now, it’s too cold

Here’s 2 pics, maybe you might recognise it.

 

[RainTown]

The thermostat logo is Danfoss, the timer is from Drayton

 

[DP]

rapid flashing of green light for heating or hot water is indicative of boiler startup of ignition process. Will culminate in solid green light after the burner is established. if the Burner does not light, the rapid flash will change to solid red.

Thermostat light is a separate issue. Boiler is already reading to demand for heating

 

[DP]

I think I’ve tried reset a few times

Boiler is working correctly. Reseting boiler is waste of time.

 

[Madrab]

when I move the CH control around on boiler, the green LED flashes rapidly for a few seconds.

That denotes that it is registering the movement of and a change in the CH flow temps and is normal.

Can you override/advance the programmer and does the CH come on then?

 

[RainTown]

Thanks for answers.

In this case I slept somewhere else cos it was cold. When I came back boiler / CH were working properly. Both timer and thermostat now had solid green lights , as did boiler.

I dunno, likely user error. Maybe lack of patience.

Thanks for suggestions/comments