Vaillant Ecotec plus 630 no heating hot water

[terryplumb]

If the entire system ,boiler / unvented cylinder / wiring / pipework etc is all only 8 months old ,it should still be under warranty by the installer. I appreciate the builder may have organised the work ,but a GSR engineer would have had to commissioned / installed possibly with a G3 certified plumber as well and you could contact them directly.
They would have had to notify building control of the installation.

 

[Johnmdc]

Has the RT 24v link been removed on the circuit board in the boiler?

 

[ianmcd]

Has the RT 24v link been removed on the circuit board in the boiler?

@Johnmdc beat me to it

 

[RMS786]

@Johnmdc - been away for work. Got back today and checked that 24VRT link has a little read wire linking two terminals on the connector (photo attached). I take you are asking for this to be removed to check if the short cycling still happens?

@terryplumb - sadly, pretty ugly story with the builder. I understand that this install has been Gas Safe certified but have no paperwork for this, brand new wiring in the whole house again Electric safe certified no paperwork, brand new extension built additional work carried as per building regs on instructions from building inspector, do not believe a completion certificate was issued. The builder has about £7K of our money overpaid to him and he has gone awol. So, no go at this point on warranty front

 

[Johnmdc]

Yes remove that link.
The boiler will just run constantly with it in place.

 

[RMS786]

Thanks John. I take it is normal practice to remove this link? The only reason i can think this link is put in place is to get the boiler going even without a thermostat? This cause of short-cycling would explain significantly higher gas bills even during summer months. Really hurts knowing that the installer should have removed this link as Hive thermostat was installed at the time of boiler installation. I will remove this link and report back on the boiler behaviour later this evening hopefully. Thanks again.

 

[Johnmdc]

Yes if 230 volt switching is used then the 12 volt link needs removing.

 

[ianmcd]

just a typo by @Johnmdc it is actually 24v as it says on the plug and yes it needs removed, very common for this to be missed by installers sadly

 

[ianmcd]

The only reason i can think this link is put in place is to get the boiler going

The boiler leaves the factory with this link in place

 

[Johnmdc]

just a typo by @Johnmdc it is actually 24v as it says on the plug and yes it needs removed, very common for this to be missed by installers sadly

Yes I meant 24v (as I said in my first post) not 12v.

 

[ianmcd]

Yes I meant 24v (as I said in my first post) not 12v.

sorry John wasnt picking on you, was just in case the op thought there was a 12v connection

 

[Johnmdc]

No probs