  
|
www.ultimatehandyman.co.uk Forum Index -> Plumbing Forum
-> Central Heating & Boilers |
|
| Author |
Message |
mells
Junior Member
Joined: 24 Oct 2007
Posts: 2
|
 Posted: Wed Oct 24, 2007 4:00 pm Post subject: Boiler ON/OFF/ON/OFF |
  |
|
|
Hi Guys, great forum!
I recently moved into a new house. It has a old school central heating system that works brilliantly but has a mind of its own. I'm at work at the moment so dont have any model numbers etc, but the system isnt a pressurised system. It has 2 tanks.
My problem is: From cold the bolier fires up, warms the house nicely, but when its warm the boiler will switch off for about 2 mins, then fire up again for about 30 secs, then go off again, does this all the time its on etc.
This obviously isnt very good and I dont suppose its doing the boiler any good either.
Any ideas?
My first thought was the thermostat. The system doesnt have any rad thermostats its all done by a very old looking stat in the living room. I've bled all the radiators recenly as there was some air rushing about. |
|
| Back to top |
|
 |
|
|
|
Jaeger_S2k
Senior Member
Joined: 19 Nov 2006
Posts: 2786
Location: North West, England, United Kingdom
|
| Posted: Wed Oct 24, 2007 4:27 pm Post subject: |
|
|
|
It will need a service.
But the symptoms sound like some temperature monitors are goosed, an engineer will investigate the symptoms better than I can, Hinton Heating will be on later.
I'd say return temperature sensor isn't working and the boiler is monitoring the temp.
_________________
Jaeger.
"Does my bum look BIG in this?" Wit's a Ba' Hair in Metric? 
 FSBF |
|
| Back to top |
|
|
Hinton Heating
Gas/Heating Expert
Joined: 16 Jan 2006
Posts: 4296
Location: Bournemouth
|
| Posted: Wed Oct 24, 2007 5:57 pm Post subject: |
|
|
|
seems the boiler stat may need replacing...
But it is quite common for old boilers to cycle on & off, once the system is up to temperture.
Modern boilers have anti-cyling devices built on the the PCB, because of this situation in old boilers.
_________________
www.hintonheating.com
 |
|
| Back to top |
|
|
mells
Junior Member
Joined: 24 Oct 2007
Posts: 2
|
| Posted: Wed Oct 24, 2007 6:06 pm Post subject: |
|
|
|
thanks guys,
Hindsight is a wonderful thing. I should have had the vendors service it before we exchanged. Lesson learned. |
|
| Back to top |
|
|
|
FAQ
Search
Register
Profile
Log in to check your private messages
Log in
