Worchester Bosch Highflow Greenstar 440

postle · 8 Oct 2011

HELP! is there something I can do to get my central heating working properly without calling an engineer out ... The water is heating up but the central heating will only come on if I press the button on the far left, which looks like a test setting. Then it fires up, but goes off after a while. I have the manual override setting on and have never used the wireless thermostat and that doesn't even turn on now ( yes I checked the batteries ) But it has never worked, so I don't think its that. The setting on the front is lit up in the 'on' position btw.

Any ideas?

petit_pablo · 8 Oct 2011

Sounds like a control issue rather than the boiler.

What controls do you have for the heating.

picasso · 8 Oct 2011

What make/model of wireless room stat do you have and why do you think its never worked ?

postle · 8 Oct 2011

The controller is a Drayton Digistat Rf1 Wireless system. But we have the part that is connected into the boiler on manual over ride, so I guess that should do the trick .... however I agree the problem must lie with the fact the controller is not doing the job properly

postle · 8 Oct 2011

I say it's never worked because the display does not have anything on it. It all seems a bit pointless since we have TRV on every rad in every room and the timer on the 440 has always worked well.

simond · 8 Oct 2011

The radio receiver is probably knackered.

Turn all the electrics off, then remove the radio receiver front. There will be LN1234 terminals.

Then join terms 1 and 3 on the terminal back plate using a piece of wire, replace the front and turn on.

Alternatively, take the wire from '3' and put it in '1' (there will be something in 1 already, leave it there).

The heating will now work; then go and buy a new radio stat.

muggles · 8 Oct 2011

Re-check the batteries, both for being new and also for being installed correctly, it's not too hard to get that bit wrong believe me!!

postle · 9 Oct 2011

Batteries are good. I have not only checked them on a battery charger, put new ones in and double checked that I have put them in correctly. common sense tells me the problem is located before that ... As I said before, that part of it has always been dodgy. I have always used the manual override at the transmitter end. What I need is to over ride the transmitter entirely!

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Worchester Bosch Highflow Greenstar 440

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