Hello, can someone please help answer a dilemma that I have with switching of bathroom extractor fans via the switches shown below?
During a major house extension 25 years ago, the electrician fitted these dual switch Fan & Light units, made and supplied to him through an electrical wholesaler.
> How it has worked to date - These have worked really well in being able to separately control the timer fan and light - avoiding the usual scenario of the fan coming on and running in the night when the light is put on.
The Fan switch is sprung and each push / click turns on the fan for the set timer duration - e.g. one push gives 5 mins, two clicks gives 10 mins etc, or multiples of whatever the fan timer is set to..
> Current Problem - All this worked fine until recently, two of the old fans failed and I fitted the following replacements on two of the bathrooms :-
1. Silent Tornado - an excellent fan, but it will only fire up if the Fan switch is pressed and held for exactly 10 seconds, then it works fine for the set timer duration.
2. AirVent Humidistat - this won't work at all from this Fan switch.
See photos of all this below incl the fan isolator switch.
> Your help please - I would really like to keep these switches, they are great. But ............
1) I don't understand how they work in the first place from one click of the switch. and
2) why they now will not fire up the new fans in the way they have for so many years.
Any ideas on this will be much appreciated.
Thanks
THE DUAL SWITCH
FAN ISOLATOR
OLD FAN
NEW FAN-1 - Silent Tornado
NEW FAN-2 - AirVent Humidistat
During a major house extension 25 years ago, the electrician fitted these dual switch Fan & Light units, made and supplied to him through an electrical wholesaler.
> How it has worked to date - These have worked really well in being able to separately control the timer fan and light - avoiding the usual scenario of the fan coming on and running in the night when the light is put on.
The Fan switch is sprung and each push / click turns on the fan for the set timer duration - e.g. one push gives 5 mins, two clicks gives 10 mins etc, or multiples of whatever the fan timer is set to..
> Current Problem - All this worked fine until recently, two of the old fans failed and I fitted the following replacements on two of the bathrooms :-
1. Silent Tornado - an excellent fan, but it will only fire up if the Fan switch is pressed and held for exactly 10 seconds, then it works fine for the set timer duration.
2. AirVent Humidistat - this won't work at all from this Fan switch.
See photos of all this below incl the fan isolator switch.
> Your help please - I would really like to keep these switches, they are great. But ............
1) I don't understand how they work in the first place from one click of the switch. and
2) why they now will not fire up the new fans in the way they have for so many years.
Any ideas on this will be much appreciated.
Thanks
THE DUAL SWITCH
FAN ISOLATOR
OLD FAN
NEW FAN-1 - Silent Tornado
NEW FAN-2 - AirVent Humidistat