RCD trips when tank stat turned own

[klunk]

Hi,

My heating system is a myson apollo 30b with a 3 way valve etc.

The other day wife said was a popping noise coming from kitchen where the programmer and boiler is , on investigation i have found when you turn down the tank stat which is a drayton hts 3 it when it gets below the temp and you can here the click in stat it causes the fault, Sometimes tripping the main rcd in the house,

I changed the 3 way valve,programmer and tank stat about 18 months ago and have had no problems up to now

I also looked at the fuse in the spur for the heating which is a 13amp should this not be a 5amp?

 

[lame plumber]

some one needs a sparky to sort that fault out.

 

[Ermintrude]

Or a decent heating engineer . Should be 3a

 

[klunk]

well them were two helpful replies thanks

 

[Dotty]

Extremely helpful. Take the advice given.

For your own safety.

Thread closed.