Electric underfloor heating thermostat

[Sallythedog]

The thermostat seems to have stopped working, even though I can programme it, and the time/day function is correct. It's been fine for the four years it's been in place, but I was attempting to increase the temperature and while going through all the functions, at one point I got an F1 error message, which apparently means Sensor Failure.

My question is this: can I buy a new one and have it fitted by an electrician? Is it that simple? And if it is, is there anything special I should be looking for in a new one. The one I have at the moment is C&F Technics, model K12, in case that is relevant.

All help gratefully received.

there will be an overheat sensor in the floor. It is supposed to be in a pocket so it can be slid out and replaced, but I hear they are sometimes (foolishly) concreted or tiled over.

They vary by make and age. If you still have the paperwork, it should give more clues.

The makers may have a help desk.

Thinking about it, try the makers first. I believe there are also systems where the heating cable itself control overheat. I have no experience of it.

Thank you PigletJohn. It's a bathroom floor and seems to be pretty solidly tiled, so I doubt there is a pocket. The only paperwork I have is the installation/user guide, which I've worked through a couple of times (faint hope that the second time it would make a difference!). The CF website has a contact form, so I'll start there.

I appreciate your replies.

My electric underfloor control (different model) stopped working after about 8 years.
I contacted the people who fitted it and they said I could just replace the controller, which they sold.
I brought one from ebay for half the price, fitted myself (basically remove old one, plug in new one, done) and it all worked again.

That's interesting Squirrels. I'm usually happy to have a go at most things, but I'm a bit wary of electrics.

I have emailed the company in the UK that is the agent for the manufacturers, but while I'm waiting for a reply, I might switch off the power and see if I can have a look at what's happening. I have the wiring diagram and initially, there are only a couple of screws holding the sensor in its housing. There is some connecting of wires to do, but it clearly shows which relate to the sensor, so I could check it's properly connected, as a start.