- Joined
- 3 Nov 2003
- Messages
- 11
- Reaction score
- 0
- Country
A few weeks ago started getting problems with DHW on this 9 year old Ferroli Falcon. I realise it's old for a boiler but could really do without replacing it unless repair becomes much too expensive.
Problem is this.
Start running bath. Runs hot. After a few minutes, maybe 10 the boiler cuts out. However the DHW demand light is still on.
If you turnoff the tap and then try and run again, runs cold. turn of boiler and cut power Wait 10 -15 mins try again will normally run a bath full of hot water no problem.
So read forums and suspected heat exchanger full of scale.
Had Powerflush come in on Friday and flush the hot water part of the boiler with descaling chemicals for a couple of hours. (£300) So presumably it's now fully descaled. Thought all was well as run DHW for 15 mins no problem. However next day exactly the same hot water problem returned.
Should i now be looking at changing the DHW temp sensor? Assume diverter working ok since demand light stays on.
CH is normally fine though i have noticed that occasionally it will cut out in the same way and re light and cut out again. But mostly the radiators are hot when they should be.
Any advice gratefully received.
Problem is this.
Start running bath. Runs hot. After a few minutes, maybe 10 the boiler cuts out. However the DHW demand light is still on.
If you turnoff the tap and then try and run again, runs cold. turn of boiler and cut power Wait 10 -15 mins try again will normally run a bath full of hot water no problem.
So read forums and suspected heat exchanger full of scale.
Had Powerflush come in on Friday and flush the hot water part of the boiler with descaling chemicals for a couple of hours. (£300) So presumably it's now fully descaled. Thought all was well as run DHW for 15 mins no problem. However next day exactly the same hot water problem returned.
Should i now be looking at changing the DHW temp sensor? Assume diverter working ok since demand light stays on.
CH is normally fine though i have noticed that occasionally it will cut out in the same way and re light and cut out again. But mostly the radiators are hot when they should be.
Any advice gratefully received.