pulsacoil 3 header tank

We have a pulsacoil 3 with a grey open topped header tank

I have refilled this today as unit is not working and green lights out.
Please can you tell me how full this needs to be. I cant see an inner marking.
At present I have filled the tank halfway to the midline ridge as is seen on the outside
Should it be filled right to the top of the doughnut?
Thanks

Sounds like you have enough.
When hot the water will rise a bit.
Keep and eye on it.
If you have to keep filling.
Then you could have a leak
Mike
MGC/H2O
Norfolk

Many thanks for this
Fabulous to have helpful forum

What is the exact purpose of the header tank please?

To fill the unit up.
And to take any expansion of the heated water.
Mike
MGC/H2O
Norfolk

stephy1968 wrote:We have a pulsacoil 3 with a grey open topped header tank

I have refilled this today as unit is not working and green lights out.
Please can you tell me how full this needs to be. I cant see an inner marking.
At present I have filled the tank halfway to the midline ridge as is seen on the outside
Should it be filled right to the top of the doughnut?
Thanks

Yes fill the tank halfway to the midline ridge is correct, do not overfill this tank, it is a fill AND EXPANSION Tank ,so water will expand in it, if you struggle with this ,you can also have a sight glass fitted to this tank as shown on my website ( www.marios-boiler-service.co.uk, slight show !! ). after filling ,your green neon should come on again.
Mario at Marios Boiler Service, Fareham Hampshire

fill the header a little above half way, on the front of the header you will see what looks like a flexi pipe which is in fact a lead going to a level switch, if the water level is not high enough then the switch wont make contact, in my experience the level is always above halfway but you need to be careful not to overfill, if this is happening on a regular basis you will have a leak somewhere . You can obviously test the switch before you fill it up by manually making contact by simply lifting it up, but this depends on access. a volt stick or volt meter is handy when doing this if you feel you are competent.

Useful information here - saved me a lot of time! thanks.

It sounds like you're not use to having a Pulsacoil 3 system.

I would highly recommend you use the following links to request manuals for basic fault finding and further information on your Pulsacoil 3 system.

Pulsacoil 3 (III)
Pulsacoil 3 Manual
Pulsacoil 3 Repair
Gledhill Pulsacoil 3 Spares
Gledhill Pulsacoil 3 Repairs

I hope these help you, if you don't understand any of the information provided, feel free to call us on 0800 046 1241.