Timer is off but boiler is still operating!!

[Jurgenjay]

It could possibly be something like this but please do not try removing anything yourself,👍 leave it to the installer to rectify . Regards kop

thanks a lot!
that photo is control link? if i show this to the installer, he would understand what to to/test/recify?
certainly i won't touch anything😅

 

[king of pipes]

I don't know which Worcester boiler you have but if I had to take a educated guess I would say you have slight wiring issue just mention it to the installer these can often be missed, but those motorised valves are also sometimes temperamental? It's a process of elimination I'm afraid. Regards kop

 

[Ric2013]

thank you!
should i mention or remind this "if the external controls are not complete at the time the boiler is installed" to the installer?

No, you'll probably just end up confusing the issue. I was just trying to explain what I thought a control link is (and ready to be shot down if my understanding was wrong).

 

[Jurgenjay]

I don't know which Worcester boiler you have but if I had to take a educated guess I would say you have slight wiring issue just mention it to the installer these can often be missed, but those motorised valves are also sometimes temperamental? It's a process of elimination I'm afraid. Regards kop

Thank you again for your reply!
I searched my quote record, the boiler is Worcester Bosch Greenstar 30Kw Ri SEDBUK.
I will mention " slight wiring issue" to the installer for his reference! Thanks for this reminder!

This issue (timer is off but boiler still operating) happened on Monday, but Tuesday and Wednesday were normal; But Thursday night happened again that boiler could not stopped working even if timber was off, then Saturday and today are normally so far.

So the problem is like intermittent, not all the time. That's why the installer came on Wednesday having a brief check and said nothing wrong... but Thursday night it happened again.

I agree with you very much that this is "a process of elimination", I hope when the installer comes again he would do the check process carefully, rather than quickly announce all good but later it happens again...

 

[Jurgenjay]

No, you'll probably just end up confusing the issue. I was just trying to explain what I thought a control link is (and ready to be shot down if my understanding was wrong).

All right! I understand it, won't mention that to the installer!
Thank you!

 

[Jurgenjay]

Port valve stuck / the micro switch, how capable are you with electrics and do you have a multi meter?

Hi Shaun, if it is Port valve stuck / the micro switch, how do you suggest I try with multi meter? I may test/check myself first if you instruct how? Many thanks!

 

[ShaunCorbs]

Do you have 240v on the oranges if you do you need to separate them being careful as one will be live and then retest to see which one is always on eg 240v on orange then once you’ve found the one follow it back to the same brown one in the cable then test does that have 240v if you do you have another fault if you don’t the port valve micro switch is stuck

 

[Jurgenjay]

Do you have 240v on the oranges if you do you need to separate them being careful as one will be live and then retest to see which one is always on eg 240v on orange then once you’ve found the one follow it back to the same brown one in the cable then test does that have 240v if you do you have another fault if you don’t the port valve micro switch is stuck

Thank you very much Shaun!
All those are to test the motorised valve? I need to open it up and test inside?

 

[ShaunCorbs]

Tests from the wiring centre

 

[Jurgenjay]

Tests from the wiring centre

May I ask where the wiring centre is? Sorry for this further question!

The other reply mentioned "I would say you have slight wiring issue just mention it to the installer these can often be missed"
===This wiring issue means the wiring centre as you said?

Thank you again!

 

[ShaunCorbs]

Follow the port valve wires eg the black ones should lead to a 12-14 way choc block strip or wiring centre

 

[Jurgenjay]

Follow the port valve wires eg the black ones should lead to a 12-14 way choc block strip or wiring centre

Thank you so much Shaun! Very helpful of you!

 

[ShaunCorbs]

That’s a wiring diagram for your system

 

[Jurgenjay]

That’s a wiring diagram for your system

Thank you so much Shaun!!

 

[akkeosflomdis]

Port valve stuck / the micro switch, how capable are you with electrics and do you have a multi meter?

 

[Jurgenjay]

Port valve stuck / the micro switch, how capable are you with electrics and do you have a multi meter?

If it is Port valve stuck---then we can replace it;
If it is the micro switch---how to do with this? And how to check if it is micro switch?