A main switch is one which controls all the electrical power at a given house or other location. That's what is meant by main switch.
That is exactly as it should be.
coolant temp switch or fan relay are bad.
1.switch off the lights and fans 2. switch the car engine off when in a jam or traffic lights 3. make more and more use of renewable sources of energy
Give them extra homework. Or appeal to their better nature . . . some of them might have one.
If your question is "What would I conserve by turning off lights and fans?", the answer is electricity.
1. Switch off lights ,fans and computers when not in use. 2. Recycling the school waste.
Some popular options for kitchen fans with lights include ceiling fans with integrated lighting, range hood fans with built-in lights, and under cabinet fans with lighting. These options provide both ventilation and illumination for your kitchen space.
Not usually, The light would have had to been wired with a three wire from the switch to the fan. One circuit to control the fan and the other switch to control the light. If this is your situation then all you will have to do is change the light switch to a timer and that will do what you want.
Having a ceiling fan can be a great thing in the hot summer months, but many people face one problem when they go to install these in their homes. The fans need to be placed in areas that are already occupied by their lights. They feel that they have to put the fan somewhere else or remove the lights. The solution to this problem is simple. You just need to look into ceiling fan light kits. These provide you with beautiful fans that give you the airflow that you desire without forcing you to choose between the fans and the lights.
I believe that the fan(s) come on automatically with the AC system. Someone else might be able to confirm that. If so, then I would guess that you need to find and replace the temp sensor/switch for the fans.
Smart home is a home in which all the home appliances like lights, fans, curtains, TV, set-top box, music system, Air conditioner and all other devices can be operated through smartphones, single remote, with remote access or a voice assistant.iliving.co.in
If you have a problem with the thermal switch, your fans will not come on at temperatures that will switch the fans to on in order to cool down the engine temperature. If you have a problem with the switch (faulty, burnt out), the only way to fix it is to replace it.