Siemens RWB2E Two Channel Programmer

[YMF]

I have had this programmer for a few years. I had turned off the power (at the fuse box) to my flat for a few days. I then turned the power back on. All lights and appliances work.

However when I switch the Siements timer to heating or hot water, the RCD fuse box is tripped within 2 seconds. The boiler never fired. I reset the RCD and repeated the process of turning on the hot water or heating using the Siemens programmer and each time the RCD fuse it tripped.

It feels like a boiler issue?

Help!

Thanks

 

[Taylortwocities]

Why did you need to turn the power off "for a few days"? Was there some work being done in the premises? If so then I would look there.

The problem would appear to be with the boiler or associated devices or wiring. So not just the boiler, but also any valves, pumps, thermoststs, etc.

 

[ericmark]

I am lucky, I can measure in the main RCD tripping is not one thing, but a combination, and turning off the power may have allowed some thing to cool, and in doing so it has sucked in moisture. But since most MCB's don't turn the neutral off, to find what is the problem without tools is not easy.

So really no option but get some one with the tools, to test and find out what has gone wrong.