Tripping Under floor heating

Char1234 · Post by **Char1234** » Mon Dec 27, 2021 12:40 am

Hi, we had our under floor heating thermostat fitted Ocotber ish. It’s turned out company I bought off sent wrong one so send me new one - should have been like for like swap but keeps tripping. It ran before on 13AMP fuse plug - paper work said 16AMP do bought some 16AMP but blows straight away - also tried 13AMP. I have done everything like for like. These pictures are how it is wired now. Am I missing something really simple? Just before I call an electrician

thank you
Apparently red and white wires are sensor and does not matter which way round it goes.

Char1234 · Post by **Char1234** » Mon Dec 27, 2021 12:41 am

Photos before below

Someone-Else · Post by **Someone-Else** » Mon Dec 27, 2021 1:28 am

What is it that trips? (Picture would be good)
Humour me, with the mains off, take out the wires that are in 1 & 2, make sure they can't go anywhere, and turn it back on, what happens?

How many heating mats have you got? is it 4?

Neelix · Post by **Neelix** » Mon Dec 27, 2021 2:08 pm

You have a lot of wires there.

Do you have any details about the size and ratings of the electric mat(s)?

Also a fuse blows, not trips