Re: Relay problem

On Fri, 27 Jan 2006 21:46:43 +0000, capnfishytakethisout@xxxxxxxxxxx
wrote:

>This could be OT, but I'm posting here to get replies with no
>baggage....
>I have a relay in my boiler which buzzes/arcs I'm trying to diagnose
>the fault, probably in my wiring. What conditions (eg shorting) would
>cause a relay to switch on & off very rapidly (leading to a buzzing
>noise) & arc?
>Many thanks
>Jonathan

Graham & Art wrote,
HVAC Technician time, would probably save you
a bunch in the long run.
Many possibles. Get a heating engineer in to look at it.

Thanks - I am somewhat impecunious at present & also trying to check
whether my wiring is at fault or if therelay is defective from new -
and therefore who should foot the bill. If I had the cash I would
quite happily call an engineer. In fact, if I'd had several grand
spare, I would have got a pro to install the whole CH system and save
me a lot of time & effort. But I haven't.

Rich Grise wrote:
I'd look at the physical condition of the relay, like dirt or some
obstruction; and check all of the connections in the relay's coil
circuit. It sounds like it's not pulling in fully.

It used to work, and this symptom appeared recently, right?

The boiler & all controls are brand new, so it SHOULDN'T be u/s.
No, the arcing was there at the start. I looked at Schrack's website
at the spec, hoping the relay was plug-in rather than soldered in
directly, but alas not. I can't see into the casing of the relay as
it is too small & too crowded. I don't want to go opening stuff up
until I know the fault is mine not the boiler manufacturers.

.

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