How Can I Verify My Landis & Gyr RWB2 Programmer Is Faul

[Gyendor]

Hi,

I suspect my Landis & Gyr RWB2 Programmer to be faulty as my HW is working fine but I have no CH. I have tested the room thermostat, pump and 3 way valve which are all working fine.

Does anyone know which contacts I can short on the backplate to bypass the programmer and see if the CH fires up to confirm if it is the programmer at fault?

Thanks
Rod

 

[D_Hailsham]

Does anyone know which contacts I can short on the backplate to bypass the programmer and see if the CH fires up to confirm if it is the programmer at fault?

Terminal 4 is the CH ON terminal; so if you link this to the L terminal you will bypass the CH side of the programmer and the boiler should then work (providing it is not something else )

 

[Gyendor]

Terminal 4 is the CH ON terminal; so if you link this to the L terminal you will bypass the CH side of the programmer and the boiler should then work (providing it is not something else )

Thanks, that worked a treat

I'm off to buy a new programmer now.

Thanks
Rod