hot water problem flowmatic 20-80 rs
- Thread starter grant111
- Start date
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There is no short term fix, but there is a long term one assuming you can find someone competent and a diverter valve service kit.
yes have the domestic diaphragm replaced by some one competent in doing so, probably 10 quid max for parts and about an hour's labour for whatever your local labour rate is!
Grant, where in the country are you?
It may or may not be the diaphragm that is root cause of your problems. Boiler indeed is getting quite old, but it is resliant and can still give you good service if looked at by someone who is not a part changer or gunning to replace your boiler. Do this kind of work regularly and had a Flowmatic a few weeks ago with same symptoms. That one is now working well.
It may or may not be the diaphragm that is root cause of your problems. Boiler indeed is getting quite old, but it is resliant and can still give you good service if looked at by someone who is not a part changer or gunning to replace your boiler. Do this kind of work regularly and had a Flowmatic a few weeks ago with same symptoms. That one is now working well.
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The diaphragm may be ok because your diverter must be partially opening for you to get some hot water. When working properly it'll reach the microswitch for HW only mode. When operating on CH, if HW is drawn, the same microswitch will override the CH command. Therefore you need a full kit which will include diaphragm, shuttle, head shaft/sping/pin & washers.
I would suggest do nothing for present BUT check operation of boiler during HW demand. The diverter may well be operating correctly (but have reservations as neglect and slippage of service gums up the parts). Have yet to replace the shuttle but almost certain tail piece will need replacing.
OP, have you checked if the person who is going to look at the boiler, is familar with boiler operation? That is paramount as throwing parts at this or any other boiler, is a fools way of effecting repairs. You chose to not say where in the country you are. There are a few guys here who are a dab hand at this boiler, so posting location could pay dividends.
OP, have you checked if the person who is going to look at the boiler, is familar with boiler operation? That is paramount as throwing parts at this or any other boiler, is a fools way of effecting repairs. You chose to not say where in the country you are. There are a few guys here who are a dab hand at this boiler, so posting location could pay dividends.
He has already chosen someone. Probably expecting that all engineers are familiar with all boilers!
The reality is that its probably going to be someone with no experience or even desire to repair who will try to sell a new boiler instead!
Tony
Thanks for (most of) the replys, as i said only wanted an idea of cost and the best option.
As it turns out Tony the eng didnt try sell me a new boiler as you expected and believe it or not I did have the common sense to ask if he was familiar with the make!
Boiler running away lovely, thanks again for the positive replys!!
As it turns out Tony the eng didnt try sell me a new boiler as you expected and believe it or not I did have the common sense to ask if he was familiar with the make!
Boiler running away lovely, thanks again for the positive replys!!
I am glad that you were lucky and found someone willing to repair the boiler.
You did not say where you are and that can have an effect on the price for the repair.
If only the diaphragm is to be replaced then in our local area I would charge £106 including a basic service but some smaller parts are often needed which would be extra.
Tony
You did not say where you are and that can have an effect on the price for the repair.
If only the diaphragm is to be replaced then in our local area I would charge £106 including a basic service but some smaller parts are often needed which would be extra.
Tony
G
gaswizzard
Tony , please don't undermine the RGI's out there , plenty of good engineers who have better things to do than visit a DIY forum.
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