No hot water

I have a Boilermate 11 with Potterton Suprima 40.
My heating is working fine, the problem is with the hot water, i dont have any!

When run any of my hot taps the water comes out hot for 5-10seconds, then luke warm and then cold, if I turn the tap off and then straight on again the water is still cold.
Please can you help?
I have read it could be the mixer valve, could you tell me roughly how much they cost and can I get it from places like plumb centre?

Thanks

google gledhill spares company is segel, i think in kent will be able to help.
hope this helps
mark.
www.gledhill-repair.co.uk

I have the same problem. I am looking more at the boiler rather than the boilermate2. My boiler turns on but does not stay on long enough to heat sufficient hot water. Please confirm what lights are displaying.
I think mine might be the pcb. If you reset the system it should correct it for a while. I have been told turning the temp to 3/4 on the boiler helps with this. I use to have my boilermate 2 timer set to on, i have now turnt it to timer mode. so far i have had 3 days with hot water. how long will it last?

your gas boiler needs to be running on maximum all the time to heat the store.
mark.
www.gledhill-repair.co.uk

Everytime I turn the boiler temp to max it stops before satisfying temperature. Then starts and stops every 5 mins!

Thanks for the help in where to get the part, i now have a new mixer valve but cant find anyone in the Ipswich area to fit it,
Does anyone know if this is a hard part to fit if the plumer isnt familiar with Boliermate 11?
Or knows anyone in the Ipswich area able to fit the part?
Any help much appricated

Hi,

Below are some (brief) instructions I wrote in reply to an earlier post on the subject of the Brawa-Mix valve replacement on a BM2. Any competent plumber should be able to change the Brawa-Mix valve on a BM2. They don’t need to understand the complexities of a thermal store. Although I would rate the design of a BM2 far higher than that of a Potterton Suprima boiler!

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No it is not necessary to drain down a BM2 to replace the Brawa-Mix valve. I have recently changed my Brawa-Mix valve and I didn’t drain down my BM2.
Before removing the old mix valve I would recommend you:
Isolate the BM2 and heat generator (Boiler) from the mains (230v AC).
Turn off cold water feed to the BM2 (very important if you don’t want to be soaked!)
Open a hot and cold tap closest to BM2 to remove water remaining in the heat exchanger coil. You can also open a hot and cold tap at the lowest point in your system too.
You may still get a bit of water during valve removal, so have an old towel and bucket to hand.

When fitting the new mix valve, make sure:
It is in the same orientation as the one you removed!
Use new fibre washers at all compression fittings.

Adjust the temperature by turning the green/white cap on the top of the mix valve. A thermometer or thermocouple is good for measurement if you have one.

Full mix valve replacement can easy be completed in under an hour.

Hope this helps?

Robin.

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