Hi,
I have a Pott C80 thats developed what looks like an overheat problem.
The CH fires up and the rads all get hot. However the temp rises and the pressure goes thru the roof until the pressure valve gives and all the water drains out the boiler. That shuts it down until its filled again manually.
The problem is related (I think) to the CH overheat sensor 10/18735 or the Boiler overheat sensor 10/18761.
Can someone confirm that the Boiler sensor is NC and tell me what temp it goes (should go) open at?
Also the CH sensor I believe this should have a cool temp resistance of between 8k to 15k, going open once its value is reached.(?)
The latter is very cheap so I will probably just replace it as a step in diagnosis, but the boiler stat is expensive to just swap incase so I want to try and test it first. Is there an easy way to check this is working ?
Another question, has anyone considered using the stats sold by Radio spares? The seem to be the same thing and are very cheap.
(www.rswww.com)
Any help or advice as ever appreciated.
Steve
I have a Pott C80 thats developed what looks like an overheat problem.
The CH fires up and the rads all get hot. However the temp rises and the pressure goes thru the roof until the pressure valve gives and all the water drains out the boiler. That shuts it down until its filled again manually.
The problem is related (I think) to the CH overheat sensor 10/18735 or the Boiler overheat sensor 10/18761.
Can someone confirm that the Boiler sensor is NC and tell me what temp it goes (should go) open at?
Also the CH sensor I believe this should have a cool temp resistance of between 8k to 15k, going open once its value is reached.(?)
The latter is very cheap so I will probably just replace it as a step in diagnosis, but the boiler stat is expensive to just swap incase so I want to try and test it first. Is there an easy way to check this is working ?
Another question, has anyone considered using the stats sold by Radio spares? The seem to be the same thing and are very cheap.
(www.rswww.com)
Any help or advice as ever appreciated.
Steve