Fan running constantly

[JWG83]

Hi

We have a logic system 24 boiler. I turned the boiler ofr for 2 weeks while away. Ever since then the fan is running constantly. Even when the burner is off or the programmer is set to off the fan is running. The code on the display is 'c' which i think means that the boiler thinks there is demand for bot water, but not 100% on this.
Tbe fan seems to be over heating so at the moment i am manually switching the boiler on once a day for an hour to keep the cylinder topped up.
Any ideas as to why the fan switch off and why the boiler is in 'c' mode, presumable sorting this will switch the fan off??
Thanks

 

[Harvest Fields]

Hi

We have a logic system 24 boiler. I turned the boiler ofr for 2 weeks while away. Ever since then the fan is running constantly. Even when the burner is off or the programmer is set to off the fan is running. The code on the display is 'c' which i think means that the boiler thinks there is demand for bot water, but not 100% on this.
Tbe fan seems to be over heating so at the moment i am manually switching the boiler on once a day for an hour to keep the cylinder topped up.
Any ideas as to why the fan switch off and why the boiler is in 'c' mode, presumable sorting this will switch the fan off??
Thanks

Sounds like you need a gas safe registered engineer to have a look for you mate. One question I do have, is what timer do you have?

 

[JWG83]

The programmer is a Salus ep101.

I have turned the programmer into off mode, but the boiler is still in c mode. So possibly not a programmer fault.

I think there are stats on the cylinder could they be faulty?

 

[Harvest Fields]

Time to get someone out me thinks.

 

[JWG83]

Time to get someone out me thinks.

Great help!!

 

[Harvest Fields]

Was that a hint of sarcasm or genuine thanks? I cannot tell?😀

 

[Burger]

To have someone to look inside your boiler, you will need someone who is gas safe registered. The C is usually a central heating demand, check everything is off for heating, unless of course you want/need it on? It could also be a motorised valve stuck.

 

[Stu-B]

Someone needs to fiddle with stuff inside, time to call a gas safe registered engineer

 

[Rob Foster]

Great help!!

UkPF is a very helpful organisation of experts in their respective fields and we get plenty of compliments from diyers and housholders in various degrees of trouble. One thing we never do is provide info about internal investigations by unqualfied people on potentially dangerous equipment. There is a Gas Fitters Forum where your problem can be discussed and the solution arrived at. By all means JWG83 join that forum after passing your GSR certs of confidence and having adequate experience and insurance. Rob Foster aka centralheatking

 

[Riley]

Hoping the op wasn’t sniping at what is perfectly good advice. For avoidance of doubt they need a gas safe engineer as the issue is not DIY. Thread closed

 

[Harvest Fields]

Was going to let it run until he had checked his motorised valves mate.

 

[Riley]

Open it up if you want mate

 

[Harvest Fields]

Cannot be bothered😀