Can someone help with this. Trying to pick the C wire and the NO wire from here. Please note I am in the UK
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C Wire is blue. So use pin 2. https://www.pickhvac.com/thermostat/c-wire/ – Parker Jan 21 '21 at 17:10
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Hi. I am in the UK and the picture shows – Jady Khalid Jan 21 '21 at 17:58
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This is UK wiring and the picture shows pin 1 which is the live wire pin 2 is yellow but no idea wht it does. Pin 3 is blue which is the neutral wire here. Pin 4 is the earth/ grounded wire. I was thinking that the C or common wire was the red/ live wire. – Jady Khalid Jan 21 '21 at 18:01
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Possible duplicate: [How do I identify the C terminal on my HVAC?](https://diy.stackexchange.com/q/33593/2196) – BMitch Jan 21 '21 at 20:11
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@BMitch -- definitely not a dupe, UK HVAC controls are completely different from their US counterparts – ThreePhaseEel Jan 22 '21 at 00:26
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Your 2nd and 3rd pics are identical. Did you intend to upload 3 different pics? If so, please [edit] to include the proper ones. – FreeMan Jan 22 '21 at 14:08
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Well I have found the serial number of the Hineywell thermostat.... its T6380 as shown in pic2. The C wire is the red wire in pin 1. The Normally Open wire NO is the yellow wire in pin 3. – Jady Khalid Jan 22 '21 at 14:30