Heating/CH NO terminal is constantly "on"
I'm having to resort to posting here as the customer service team have seemingly stopped responding to my live-chat messages. They've "seen" my last one where I asked for someone to respond after 24 hours of waiting, but another 24 hours later it looks like they've decided to ignore it. I can understand being busy or needing to investigate, BUT COMMUNICATE THAT TO YOUR CUSTOMERS. IT'S CUSTOMER SERVICE 101.
Anyway, here's my problem:
I purchased Tado last weekend and wired it up myself according to the instructions. I'm not an electrician but I have an electronics qualification so it was easy enough to follow. Since installing, I noticed that the heating was on 100% of the time, regardless of what the Wireless Receiver or app are saying. The app can be switched off and on, the heating light on the receiver goes off and on, and the relay can be heard clicking. Despite this, the heating stays on 100% of the time. If I disconnect the CH NO terminal, the heating does not come on. I had to keep turning the boiler off as the house was getting hotter than the Sahara.
The customer service team advised me to reconnect my old wired thermostat. I did this, and the problem is still the same, apart from now I can essentially turn the old wired thermostat up and down and the heating will stop or turn on as the wired thermostat is opening and closing the circuit. Pointless really, as it defeats the purpose of having the tado system. It's the whole reason that the bridging blocks are included in the kit.
It's quite clear that the CH NO terminal in the wireless receiver is stuck providing a "live" signal to the boiler, despite the lights going off and on, the app saying off/on, and the relay clicking. Funnily enough, the hot water control is perfect and works as intended. I tried connecting that wire to the CH NC terminal but the heating just doesn't come on at all so have switched back to the instructed wiring.
Does anyone know how to fix this? I've sent my findings to the customer service team and have had no response in 48 hours. I'm hugely HUGELY disappointed. I really love what the products are trying to achieve and just want to enjoy using mine considering I spent quite a bit of money on it.
Thanks in advance.