Baxi 80e gets hot and then cuts of. C/H sensor fault display

[jonkey]

HELP!!!!!!! I have a baxi combi and im having some real trouble with it. Every time i turn it on it fires fine, then just as it starts to get hot it shuts down and the C/H sensor fault light starts flashing. I need to know if there is anything i can do before i call a heating engineer. thanx

 

[lor]

your boiler has diagnoes the fault for you ,just call a corgiman tell him this
ask him to bring a thermistor for this model with him tosave time
this is a straight forward job ,i would charge approx £45labour if close to me .part should be under £40 prob less.
count yer self lucky!

 

[just-thinking]

simple job.do it your self.
sensor is in a dry pocket,no water to drain out.2 red wires on small pull out plug.
turn off electric first.
while case is off have a look around for water leaks.combi 80 likes to leak water.
i change at least one of these a day.

 

[corgiman]

My advise is NOT to do it yourself

Please call a competent person to do it for you3

 

[jonkey]

Cheers for your advice, engineer came around today, he said it was the thermistor but he didnt have one on the van so he didnt charge me a call out (what a nice bloke). im going to do it myself but i cant seem to find a diagram of where it is. I think I know but don't want to risk it, could one of you nice chaps point me in the right direction just to be 100% sure, thanx

 

[gazthepottertonengineer]

if you look on here it will show you http://www.partsarena.com/baxi/

 

[jonkey]

Cheers, i take it that the thermistor is called the central heating temp sensor. ive just taken it out and cleaned it of. it had losts of white gunk on it. i cleaned it and put it back in and every thing seems to be working fine. fingers crossed it might just have been that. thanx for help

 

[gazthepottertonengineer]

its actually supposed to have the white gunk on it its called heat sink compound

 

[jonkey]

Well i took it out gave it a wipe and bobs you uncle, it works fine now. The only other question i have is does the boiler have such a thing called frost protection. And if it has what exactley does it do. I dont think mine has im just interested.