I have a MK RCD single 13A outdoor socket which has ceased working after
about 18 months.
It just trips out even if there is nothing plugged in.
There's nothing obviously wrong - it's dry and the sealed front cover is
always kept shut.
It cost me £60 so I'm disappointed to have this problem after such a short
Does anyone know if these are repairable/serviceable or is it best to bin it
Any help/advice will be much appreciated.
They aren't readily repairable I'm afraid to say. The only advice I would
give you, is to replace the external socket with a plain, non-RCD type, then
install a separate RCD device internally to control it. I have found that
these RCD's are not very good at dealing with extremes of weather and
temperature conditions, and they do become weakened very prematurely.
In the five or six I have installed in just the last couple of years, four
have gone belly up already. A fifth one I remedied myself, before getting
the call to go repair it. I replaced all with plain, non-RCD sockets. Just
waiting for next year to arrive, just to see if this does really help, but
we live in hope. :-)
To rule out water having got inside somewhere you can't see, take the
socket off, and leave it in the airing cupboard for a few days (without
the back box on it). Make sure you have disconnected the outdoor supply
indoors, so the wires are not live, and make the exposed wiring and box
waterproof whilst it is missing the socket. However, if this fixes it
implying water had got in and caused the problem, you shouldn't use the
RCD socket again for real without at least checking it with an RCD
tester to ensure it's calibration has not been affected.
Did you remember to drill a condensate drain hole in the bottom of the
box? Was there any sign of condensation when you removed the socket
from the back box?
Some RCD's will also trip in the event of various supply problems
such as disconnected earth, disconnected neutral, live/neutral
reversed. Might want to check for any of these too.
Not repairable at all, and deliberately so.
Much of the MK range has long manufacturers guarantees, so you might
want to check if it is covered by that.
For future reference, the RCD for my outdoor RCD protected sockets
is indoors in the dry. (Actually, it's an RCBO in the consumer unit).
I called MK and they said to send the Socket back to them and they would
either repair or replace FOC.
When I took it off the wall it was extremely wet inside but after drying it
out overnight it still didn't work so it's now on it's way back to MK
The drain hole was clear but the inside of the box was generally wet.
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