Grundfos pump still not working

[Echo the husky]

The electronics are probably blown then.

 

[Funkyfridays]

Which electronics?

 

[Echo the husky]

The ones in the terminal box with the lights on.

 

[Funkyfridays]

These are brand new? This is the terminal box im referring to

 

[Echo the husky]

Post a photo showing exactly what part was replaced, I assumed the terminal box you were referring to was the black part of the pump where the wires connect?

 

[Funkyfridays]

Yes correct

 

[Funkyfridays]

 

[Funkyfridays]

Heating is currently on, thermostats calling for heat, actuators lit up bit nothing on pump

 

[Echo the husky]

The UPS2 has a circuit board in it with the speed control electronics in the black part, these are delicate and fail frequently. If the motor in the silver bit is faulty it will kill any replacement circuit modules. The circuit modules often fail as a short across live and neutral, that often destroys any boiler PCB they are directly connected to, terrible things. If there is 240V power at the pump end of the cable, the pump has to be faulty.

 

[ollski]

Pick yourself up a pump head for an old Worcester 350 or something and change the heads

 

[Funkyfridays]

Ive just picked up a new replacement pump with the black terminal box and still no joy which is why i started thinking am i missing something? Just rechecked and there is 233V at the terminal box on the side of the pump so then does this mean the new pump is no good

 

[Echo the husky]

You changed the silver part too?

 

[Funkyfridays]

No but ive plugged the new silver part of the pump onto the new terminal box withoit it being plumbed in and it still doesnt light up or spin