Search results

i followed chris's advice and un-plugged the thermistor. guess what? it works. the gas fires up :lol: . i also measured the resistance of the thermistor and it reads 850kohm which is within the range that chris gave me. now, since the thermistor seems ok, can i assume that the pcb is the...

thanks chris. the problem is intermittent that's why i suspected the pcb.i'll check the thermistor tho. i have been looking for the installer doc for the suprima but i only found the user manual (or the installer one but for suprima HE which seems quite different). Any idea where i can get it?

thank for your replies the pump was replaced a few months ago and the water seems to be circulating fine. my problem is that there is no call for heat when the water is cold. i'm gona replace the pcb first and then the thermister. what is the latest pcb p/n that is known to be reliable...

any idea anyone? :(

i have a suprima 50 for 8 years and like the most of us i used to have the lockouts problem. i managed to get rid of them by re-soldering the PCB. everything worked fine up until a few weeks ago when the boiler simply wouldn't 'heat' (not sure what the exact term is :oops: ) as if the water was...

thanks guys, the boiler is a potterton suprima50 and the upstairs rads are under 12feet up from the boiler. However some hot pipes go right up to the attic, which would be around 14feet from the boiler. Is there any recommended pressure in the vessel for this type of systems? Thanks in advance G.

hi guys, what is the recommended pressure in the expansion vessel of a sealed system? is it to be check when the system is hot or cold? mine reads 0.4bar... also, I read somewhere in one of Chris's posts that we need to add water to the system every year or so. How do you do that in a sealed...

Hi JohnD- the house is about 8 years old. i'm not sure whether there's an inhibitor. the colour of the water is yellowish with a strong smell of chemical though... unfortunately i can't track the warmth down the pipes as all pipes are hidden behind the plasterboards. i'm gonna try balance the...

Blushy- my pump is set to the fastest speed and the noise isn't a problem. maybe you should try turning the pump manually. You shouldn't feel too much resistance or hear any noise. turn off the boiler, unscrew the black cap in the middle of the pump until you feel the impeller spinning.if it...

i tried that. it seems like downstairs rad are a bit warmer but they are still far from being as hot as upstairs, and still unevenly warm...the control valve is warm but the lockshield valve isn't. One more thing...I noticed that all lockshield valves are completely open. is that the way they...

i've checked the impeller and didn't noticed any resistance. any idea?

Folks, first let me thank you all for the good tips i've used from this forum...saved me a lot of money! :wink: hopefully you'll help me solve that one... I have a Myson CP53 pump that is getting so hot I can't leave my hand on it more than a couple of seconds... even when the boiler is...