Air Conditioning - A/C Concern - Power Issues

I decided to try and give my coils a cleaning with the advice I received and info I read. Have the vertical air handler with the slant evap coil. I pulled the blower by disconnecting one power cord (and flipped all the power off first) and removed 2 screws. Sprayed cleaner on inside and outside, let it sit, then cleaned with brush along coils. All seemed well. I rinsed in spurts with hose and wet/dry draining on outside. Ran a blower/fan on inside to dry out... waited about an hour... then put it all back. Flipped outside switch, inside switch, and put back in the emergency clip next to the airhandler. Power went on on tstat. Looked good... put filter in.. lowered temp... and waited. Few minutes rolled by and nothing. Checked fuses and nothing was tripped, but when I returned to tstat, it was blank. I removed fact, cleared off dust.. put it back.. nothing... went to make a call... and after five minutes of no display... it turned on and is cooling like a SOB. Working great.
My concern is why it took so long.. why did it power, then lose power, then turn back on. Nothing was tripped, nothing visible.. no elec concerns that I can see or smell. :o) Any ideas?

Its working damn good right now.. just concerned with why it did that.

Thanks,
KDC

Some equipment will not power up the low voltage right away after the line voltage has been shut down. I have seen up to a 10 minute delay built in. Three to five minutes is common.

Thank you Grady.

Glad to hear. I was worried more than you know that I screwed something up. Glad to hear that is common. Still running well and nice and cold. Thanks for your help and all others in other posts.

KDC