Your plants should be ok but it might take a day or two for them to recover completely and grow at their full potential. Plants are pretty resilient...even concrete foundations are no match for a plant root.
When a person designs a room the thought of "What can go wrong
will go wrong" should be considered every step of the way.
Timers and temperature control, once working properly, will save many grows.
Here's my suggestion for you and everyone who uses timers and controllers....
If possible, use separate circuits for lights and for the cooling unless your circuit can handle both loads easily. If I had a dollar for everyone who told me the electricity went out and only the lights turned on when the electricity came back on I could have put my kids through college. Use a separate circuit and make sure the air cooler you purchase does't have to be manually turned back on if the electricity goes out.
This little tip could have saved a lot of frustration.