Thermostat wiring help

Discussion in 'Electricians' Talk' started by Christ6008, Jan 23, 2021.

  1. Christ6008

    Christ6008 New Member

    Hi all,
    Kids have broken thermostat housing so want to replace my very old mechanical one for a digital one but unsure of wiring.

    I have RED, YELLOW, GREEN, BLUE wires, could anyone help me with where they go on this diagram pretty please.

    Thanks in advance !
     

    Attached Files:

  2. jayktee

    jayktee New Member

    Going by the normally used colours of an old 3c/e cable. Red to 4, with a short link wire 4 to 1. Blue to 3. Yellow to 2.( Red and yellow cores should ideally be marked with brown tape or sleeving.)
     
  3. Philip Hyde

    Philip Hyde Screwfix Select

    Do you have a picture of your old stat before you do the wiring. The stat you are about to fit looks like a floor stat.
     
  4. Christ6008

    Christ6008 New Member

    It wont let me upload it for some reason. Defo a boiler stat
     
  5. Philip Hyde

    Philip Hyde Screwfix Select

    Trying reducing size of picture. Or screenshot on your phone normally works.
     
  6. Philip Hyde

    Philip Hyde Screwfix Select

    Just looking at the 5-6 NTC is an under floor probe. Most can do air sense and floor.
     
  7. Christ6008

    Christ6008 New Member

     

    Attached Files:

  8. Philip Hyde

    Philip Hyde Screwfix Select

    Like Jayktee says Red into 4, with a short link wire 4 to 1. Blue to 3. Yellow to 2.( Red and yellow cores should ideally be marked with brown tape or sleeving.)
     
  9. Christ6008

    Christ6008 New Member

    Brill will give that a try, thanks
     

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