Overthinking diagnosis or just incorrect?

[jaydebruyne]

went to a boiler breakdown yesterday, Vaillant turnomax 242/1 E

Put it in demand and nothing.. has power. No lights advising lockout. Reset boiler. Nothing.

Getting 240v on pump terminal on PCB but nothing at pump so I figure there's a break in the cable so have put it down for a new pump.

There is no manual reset overheat stat, not that I could fine anyway.

Now I'm wondering if I've missed something stupidly easy?!?!? Overthinking it???

 

[ShaunCorbs]

No if pump gas 240 going out from pcb pump should run

Did you multimeter the leads to check no break ? / are you getting 240 on connector/ terminal on pump ?

 

[jaydebruyne]

No if pump gas 240 going out from pcb pump should run

Did you multimeter the leads to check no break ? / are you getting 240 on connector/ terminal on pump ?

No getting less than a volt at pump.. didn't check continuity of lead.. for some reason I was a bit anxious so it didn't register to do that.. spoke to Vaillant earlier and they said same as I thought and what you're saying.. most likely a break in the cable as there are no manual reset stats.. just waiting to see if this company want me to go back and do the work so I guess I'll see when I change the pump - will test the lead first to see if I can just change the lead

 

[ShaunCorbs]

Yea break in the wire somewhere

You might be able to tell if you have a volt pen and lay it on the wire and go slowly up the wire