baxi combi c/h not working!!! help getting cold!!!

[andy456]

hi people i have a baxi combei 80e oe105e not shore as the manual says both the hot water works fine its just the heating will fire up or a little bit than cuts out and will restart if unpluged and pluged back it stright away i have the cover off and checked a few things any ideas would be great and also checked the wall stat and working.thanks

 

[Agile]

You should check the resistance of both sensors with the boiler cold.

It could be a PCB fault.

However, usually it would show a fault code but you have not mentioned any!

Tony

 

[andy456]

thanks for your reply which sensors ? i have taken the tem sensor on the heating side out if i unplug it than it wont run?and were would it show the fault code?also it will run hot a bath with no probs and realy seems only on the heating side.thanks again

 

[andy456]

forgot to say when it cuts out the pump still runs and the lights go down i sopose this is because the waters still being pumped around and the radiators are cooling the water as it wont be being heated?

 

[andy456]

hi again just unpluged the temp sensor in the c/h and shows a flashing 8 and the temp sensor on the h/w shoes a 7 when unpluged does this mean they are both working as it shuts down when unpluged

 

[bengasman]

do you mean stops and restarts after some time, or lock-out?

 

[andy456]

yer it will fire up and warm up for a bitthean go out with the pump still running them may or may not put in again in a bit normaly just turn off at the plug and it will come on again or turn the tap on then when turned off the heating will kick in again

 

[bengasman]

if the diverter is stuck so the water heats up but can't get out of the boiler, it will take a long time before the boiler cools down enough to light again, so best to leave it sit for a while and see what happens over a couple of hours.
Provided of course it does not seem to overheat or otherwise cause a danger.

 

[andy456]

the heating gets the rads nice and hot but just cuts out and some times wont restart ond other times willwould the diverter just jam or only when switching fron h/w to c/h because we havent used the taps this morning and still it will cut out after a bit.thanks again for you help.can i check the diverter??

 

[andy456]

can anyone help with this just keeps cutting out sometimes itsok cuts out then comes on soon as then athers like tonight it has not came back on all night i think

 

[baxpoti]

Eliminate faulty room stat or external wiring by refitting the loop on terminals 1 and 2 (refer to the installation instructions, wiring section)

 

[andy456]

hi first thing i did and still the same?

 

[baxpoti]

Your gas valve is probably out of calibration. Corgi job!

 

[andy456]

why would it work so well on hot water tho?also changed all the temp sensors for the hot water and c/h and over heat sensor and still the same,i can seem to make it stay on if i run the hot tap then turn it of seems to keep the heating going for a bit?just keeps cutting out than cut back in sometimes wont cut back in???please help carnt aford to get a person out at the moment and its getting cold

 

[andy456]

come guys somene must no whats up with it?????