Boilermate OV A-class not delivering heating and water

Hi,

We are in a property around 6 years old and had this thermal storage fitted from new.

It all worked fine until recently when we got some hot weather and turned the house thermostat down so the heating was not coming on (not the first time we have done this by the way). The other night it got cool so we turned up the thermostat till it 'clicked', the radiators got hot for a short while then went cool.

Tonight, my wife had a shower then after that the water went cold and there was no hot water. We also tried turning up the thermostat again for the heating but the radiators stayed cold?

Has anyone had a similar issue? Plaese help as I am really uncertain of this system

Thanks in anticipaton

Well you need to carry out a few checks.
Header tank all ok?
Main board display ok?
Any fault codes?
Pumps working?
Boiler working and running long enough to heat the unit?
Boiler set on max?
Check the post on here ref your unit.
And try stating where you are located.
As there may be an engineer in or around your area.
Mike

Mike - thanks for the very quick response, appreciate it!

After looking at some posts on here I checked the header tank but could not see a 'fill line' mark, however there was sufficient water in the tank to keep the ball valve closed - is that OK?

I haven't opened the front yet, is that where I can check for 'main board display' and 'fault codes'?

How can I tell if the pumps OK?

The boiler is gas, based down stairs and seems to be working OK from what I can tell, but is not set on max (I know that is the recommendation). Max setting is 6 and I am set on 4.5 but this has always been the case and I have had no issues before now so why would it change?

This seems to all have started when the outside temperature has risen, I can't believe that would have any affect, correct?

Interestingly this morning before I left the house we had hot water but I'm not sure how much. I have boiler cover with British Gas but am trying to understand if the boiler is not delivering enough hot water or if the thermal store is not 'requesting' it....or if something else is going on...and what is happening with the central heating...

I am based in Darlington, County Durham, DL5 post code area - do you know the details of my local Gledhill specialist and/or a number I can call?

Thanks again for your help and support

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Mike

Any insights into any of my questions?

Kevin

Yes plenty.
Put the boiler on max for starters.

Done that, no difference....

Well; what is happening with the boiler on max?

12 minutes not really long enough to say nowt happening.
With a "thermal store"
As it needs to be hot / heated/
Is it hot?

Boiler has been on max for around 12 hours not 12 minutes...
Now have warm, not hot water but still no central heating

Check the pumps are running.
Is the unit hot?

Hot water – we get around half a bath full then it goes cold..
Central Heating – move the room thermostat to 30C, sometimes the radiators stay cold, other times they get hot for 2 minutes then cold again

Pumps appear to be running and if they weren't wouldn't heating and water never get hot?

Unit is hot...

You need to get someone in to look at your unit.
As your knowledge is very basic to say the least.
And I do think tat you could do more harm than good.
Mike

I decided to get someone in after 1) you asked me where I lived and as I was not in your locale your interest seemed to reduce and 2) you didn't seem/want to try to understand my issue as it isn't/wasn't straight forward

In terms of my knowledge, I don't profess to be an expert in 'thermal stores' as I have a 'day job' which doesn't involve these but someone who has worked on these for a long period of time you would think would be an expert...and willing to help

FYI - I have a degree in mechanical engineering and electrical engineering so please don't try to deflect an issue you can't understand

Anyway, engineer came out today, I told him what I have stated on here and he went straight to the issue and resolved it...

First of all there are basic checks to carry out.
And when asking you to check etc.
You came back with well why as they are working are they not.
Also lots have been posted on here ref;
Checking pumps etc.
It is all well and good having a degree in mechanical engineering and electrical engineering, but you had not at one point even removed the cover.
So that is how you came across.
That you were not confident with it.
And that is fine with me, as I would never try to encourage anyone to proceed any further.
And it does appear to be rude, that an engineer has resolved your problem.
But you have not posted the result, which would help perhaps other posters / people following this post of yours.
I have made over 1000 posts on here, hence a lot of info too.
But I can not keep repeating this as why?
I have a day job to.
I wish you well and that your unit continues to give good service to.
Mike

I had removed the cover, the issue I had was you were asking me to check things that defied 'logic' and being an Engineer I need a logical approach. I told you on a number of occasions that at times I had both 'hot water' and 'heating' and on other occasions I didn't, so why check the pumps? Pumps rarely are intermittent so boiler pump was working or thermal store would not get hot, heating pump working or I would not get heating and hot water pump working or I would not have got hot water...so why state 'check pumps'.....

You state 'you find it rude that an engineer has solved my problem' - when you have a family and need hot water anyone would try a number of options to get to a solution so calling an engineer was my parallel activity to being in this forum. As I stated previously I only contacted an engineer when '1) you asked me where I lived and as I was not in your locale your interest seemed to reduce and 2) you didn't seem/want to try to understand my issue as it isn't/wasn't straight forward'.

In terms of the issue, from what I had done logically I decided either the 'thermal store was calling for more heat from the bolier and the boiler couldn't keep up' OR the 'thermal store wasn't calling for more heat from the boiler when it needed it' - this was because we were getting heat in both water and heating but not constantly. When the engineer checked he confirmed the logic and that the thermal store was calling/triggering the boiler but the boiler wasn't supporting the request. After looking at the boiler he found that the solenoid that fed the gas for the pilot was not working consistently so the boiler wasn't always working and giving heat to the thermal store - he replaced the solenoid and now perfect heat for water and central heating

Well at least after all that after all that.
You are up and running.
And you may help others in the process too.
The reason for location being stated due to the fact some areas have cover and some none at all.
If an engineer can see the posters location then offers of help can be made.
I found it rude that you did not post how your problem was resolved.
You have now!
Not that you got an engineer.
Pumps do go intermittent more so when the main ACB is involved and sensors etc.
And due to sludge and bits of scale etc etc.
So if the gas valve was not working correctly, the unit was not hot?
There are many reasons why you may not get DHW.
And indeed the answers are on this forum.
I have my way of working, and when reading messages etc I ask questions, which gives me information ref your unit.
And what the person is capable of.
I and many others give up our free time to help the people on here.