Gledhill Bolermate relay problems

[ianh1000]

Hi
I have a Gledhill Boilermate heatstore that contains 2 pump control PCBs.
I have been getting a lot of relay noise (Chattering) for a while. There are 2 PCB, one for boiler pump delay to run teh pump for 5 min after the boiler stops firing and a second that runs the CH pump for a couple of seconds per day to avoid it sticking during the summer.

This problem was originaly just once per day so I assumed it was the CH pump drive PCB. It recently got worse and happened almost everytime the boiler fired ( Boiler delay pcb?).

I just fitted a new Boiler delay PCB and the problem is still there once per day. it only happens for a couple of seconds so I cant ensure I am there to confirm which rleay is noisy.

Question

Could the relay failures be caused by a failing pump?
( both pumps are Grundfos Selectric 15/50)

Could I just be unlucky to have 2 failures?

These PCBs look real simple but I do not have the time to look at fixing to component level.

Thanks in advance,

Ian

 

[oilman]

Could the relay failures be caused by a failing pump?

( both pumps are Grundfos Selectric 15/50)

Unlikely.

Could I just be unlucky to have 2 failures?

Again unlikely.

These PCBs look real simple but I do not have the time to look at fixing to component level.

You shouldn't have to, they are probably n holiday, but speak to Gledhill technical, they will try to help.

 

[ChrisR]

post query on plumbingpages.com forum - a guy there'as a bit of a specialist on these.

 

[breezer]

relays as you may or may not know are just electric switches, so if the relay is chatering it is more than likeley the control circuit that operates it rather than the relay itself (unless the relay coil connection has a dry joint)