Vaillant ecotec pro 24 f.62 and f.25

[alirafay]

Hi guys!!

I am currently experiencing a problem with my Vaillant ecotec pro 24 boiler. Last Friday night my boiler broke down. The fault code f.62 appeared which stands for according to the Vaillant manual "Gas valve shutoff delay" and the cause for it is "Gas valve leaking, electronics defective". The heating technician established that the printed circuit board needs to be replaced. So I replaced the circuit board. After changing and igniting the fault code f.25 appeared . F.25 stands for "Interruption in the compact thermal module cable harness" the cause is "Compact thermal module cable harness defective". I called Vaillant the suggested that the cable tree harness (Part no: 0020052332) needs to be replaced. So the harness was ordered and replaced. And now I am back to F.62 again!!! I am quite frustrated!! Whats wrong with my boiler and whats wrong with the weather!!!! It's freezing cold. Have you experienced a similar problem? Any suggestions?

 

[Agile]

What was the involvement of this "heating technician" ?

Why did he not complete the repair and take responsibility for diagnosis and repair?

Tony

 

[Bunnyman]

Probably external earth fault in the house or other appliance

 

[alirafay]

I have asked an engineer to pay a visit today. He should be able to give an accurate diagnosis and get the problem fixed. I will keep you updated.

 

[alirafay]

The thermal fuse was blown out. Unfortunately the thermal fuse is not sold as a single component. One has to replace the whole heat exchanger, which is quite painful. So for future references if someone is experiencing the fault code f.62 or f.25, then unplug the cable that is located on the top of the heat exchanger put a cable loop (a wire not longer than necessary that connect one outlet of the cable with the other) to simulate a fuse. Restart your boiler see if it is working. If your boiler is working than the thermal fuse has gone. Other possible issues could be due to the printed circuit board. Anyway call a qualified engineer!

 

[Bunnyman]

Lol what a load of utter ****** mate , please ignore that advice it's wrong an laughable !

 

[ianmcd]

The thermal fuse was blown out. Unfortunately the thermal fuse is not sold as a single component. One has to replace the whole heat exchanger, which is quite painful. So for future references if someone is experiencing the fault code f.62 or f.25, then unplug the cable that is located on the top of the heat exchanger put a cable loop (a wire not longer than necessary that connect one outlet of the cable with the other) to simulate a fuse. Restart your boiler see if it is working. If your boiler is working than the thermal fuse has gone. Other possible issues could be due to the printed circuit board. Anyway call a qualified engineer!

Absolute rubbish if you are having a similar fault please ignore this advise

 

[GuessMan]

Get a proper RGI boiler engineer in and stop playing with stuff neither of you know about!

Or is this a wind up post?

 

[Gasant]

Hi I'm a rgi I have had same problem with the thermal fuse f25
After a lengthy chat with Vailliant tech I changed main heat exch(can't purchase the fuse separately)
And when I disconnected the rubber/copper pipes from the hydro block they were blocked with magnetite that's why it overheated but I only got the f25 code after replacing Pcb !
Now boiler has been flushed out it runs perfectly

 

[Bunnyman]

F25 has fook all to do with the thermal fuse as others have said pls ignore this thread

 

[Dan Robinson]

You chewing on your wooden spoon again Bunnyman?

 

[Bunnyman]

?? Dan what u mean?

 

[Dan Robinson]

Frustrations mate