Wiring a timer fan on a non timer circuit

[SUNRAY]

I see, i thought you was saying its in series with the motor and reducing the voltage

No I doubt it.

 

[barrymac20]

Rocky was concerned about the touch safety of the bare wire link you placed between L & SL, I was only commenting that it was likely to be directly connected to the exposed wire of the resistor and therefore no more of a hazzard than as manufactured.

In my experience most [but not all] of this sort of fan mains powered unit uses a 230V motor and as Rocky says there is usually no circuit board in a basic fan, just a connector block and chances are doing away with the board is all you need to do.

I will however caution that one unit I've encountered had a 24V ac motor which seems to work properly when wired directly to the mains but of course didn't work for very long.

Thstnks for clarifying.
When plugged in as per my picture the potential across that resistor is around 120v but i wasmt sure if that was for the timer circuit. I could probably open the motor casing to see if theres any voltage marks to clarify its design.

 

[barrymac20]

There ya go

 

[endecotp]

There’s nothing to worry about. That resistor is part of the very crude power supply that provides the low voltage for the timer circuit.

 

[SUNRAY]

There ya go

In the words of Anna Richardson...
Ditch that board.

 

[barrymac20]

Done.
PCB gone. Connector block in place. Worked a treat.

Thanks everyone for your help.

Barry