transformer timer

[lammy76]

help i have just replaced t transformer connected to a manrose b/room fan like for like .but fan is not getting a power to is because i replaced it with manrose timer transformer where as the old one was not and does this have anything to do selv

 

[Rockingit]

Hi and welcome.

Assuming that you have indeed swapped units like for like, then the most obvious thing to check is that you've terminated your wires correctly. The transformer/timer unit has two lives going in - a permanent one and then a switched one (usually taken from a light or a pull cord), the neutral and earth. This is so that the fan can continue to run on the timer AFTER the light/pull/whatever has been turned off.

There's then +/- 12v out to the fan. Just take your time with a meter to identify which is which. If you've managed to accidentally connect the fan to 230V then it will in all likelihood be very dead.

 

[Edd]

As above, the only real way here is to test with a meter to see what voltages you have

 

[lammy76]

hi thanks for your response .i have double checked everything even replacing the transformer twice i connected supply to n/sl/live and then the fan comes off connecter blocks marked 1 2 . with my meter i have power on all points bar 1/2 , just to say i am training to be an electrician so the meter is still a bit new to me.