Recently replaced the microwave over the stove c/w hood fan. Fan comes on every time microwave is turned on and, if thermostat setting is below ambient temp, central air kicks in. Can anyone explain to me the mechanism that is happening here. As far as I can tell, the microwave is plugged into an outlet, so no wiring associated with thermostat. Is there a trigger in the ventilation baffle for the microwave that automatically kicks in the vent fan which is then triggering the A/C unit? I'm a DIY rookie, so appreciate any explanation...cheers,
First time using the outlet the microwave is on now since the h/a was installed or worked on? If the fan, microwave and central unit are madeup in the same box in the ceilig, you need to get someone to check the wiring out. Sounds like they are all tied together in a way that is supplying power ( completing a circuit)to all three when one is on.