Originally posted by adam1985
quote:
Originally posted by BenB
Fixed price British Gas repair is quite good for this kind of thing....
that is proberbly the first and last time i have and will ever hear that
Have a tennent in a flat and it has a Potterton Puma 100e combi boiler.
Heating is fine and so is hot water if the heating is on. If the heating is OFF then the boiler fires up on demand from a hot water tap being switched
on, the water takes a while longer than it should to go warm and then goes tepid. If the tap is turned down to a very low flow it warms a little more
but barely enough to be warm enough to shower in.
I'm reluctant to open the "demand your own price" chequebook as I don't have a recommended heating engineer and been bitten before
for mythical problems and parts.
Any suggestions please from you knowledgeable and wise men?
with the heating off when you run the hot tap for a while is the heating flow pipe warming ?
quote:
Originally posted by adam1985
with the heating off when you run the hot tap for a while is the heating flow pipe warming ?
does the boiler have an output temperature control to adjust?
At this time of year we hear this a lot and it's often because the water temp coming in is very cold.
if not you need to get the professionals in. if you as a landlord fiddle with the boiler and from your question I assume that you are not a qualified
gas engineer, you could go to jail if it all goes wrong and someone gets CO poisoning.
In your own house take the risk if you want but not with a tenant - if you can't fix it (or even if you can fix it) and they go and complain to
the council and say that their landlord won't get a proper engineer in to attend to the boiler but insists on having a go himself then you will
have some very awkward questions to answer.
Really not worth the risk IMHO
Have you checked the system pressure? the boiler wont run if its too low, but can cause what you describe if its low.
quote:
Originally posted by mookaloid
does the boiler have an output temperature control to adjust?
At this time of year we hear this a lot and it's often because the water temp coming in is very cold.
if not you need to get the professionals in. if you as a landlord fiddle with the boiler and from your question I assume that you are not a qualified gas engineer, you could go to jail if it all goes wrong and someone gets CO poisoning.
In your own house take the risk if you want but not with a tenant - if you can't fix it (or even if you can fix it) and they go and complain to the council and say that their landlord won't get a proper engineer in to attend to the boiler but insists on having a go himself then you will have some very awkward questions to answer.
Really not worth the risk IMHO
quote:
Originally posted by r1_pete
Have you checked the system pressure? the boiler wont run if its too low, but can cause what you describe if its low.
2 bar is fine.
Good test to see if the central heating pipe gets hot when the CH is switched off and the hot water is switched- could be the diverter valve which is
crudded up.
That would give the symptoms you describe....
Not a small job to change on some boilers. Fixed price British Gas repair is quite good for this kind of thing....
quote:
Originally posted by BenB
Fixed price British Gas repair is quite good for this kind of thing....
quote:
Originally posted by adam1985
quote:
Originally posted by BenB
Fixed price British Gas repair is quite good for this kind of thing....
that is proberbly the first and last time i have and will ever hear that
The symptoms you describe would point me straight to the divertor valve, there is a rubber membrane inside which is probally split, obtain a repair kit from parts center, and fit it!!
Sounds like the divertor valve to me too. Had the same problem with a Vaillant. Not cheap for yours though ....£100 ish