New thermastat Air won.t turn on at all or if it does it only stays on for a second and then goes off and won't come back on.

Try one of these diagnostic repair videos on YouTube:

https://www.youtube.com/results?q=Whirlpool+dryer+won%27t+start+stays+on+sensing

Hello friend, thanks for the post!

From my understanding your Frigidaire air conditioner is rapidly turning on and off, this could be due to restricted air flow. First, I would check to make sure the air filter is clean because a restricted air filter could cause this problem. Secondly, check to make sure nothing is blocking the air flow like drapes, blinds, or furniture. Lastly, your condenser coil could be dirty or blocked I would make sure if it installed in the window that no bushes or trees are blocking the coil. I hope this helps. -Matt

Time for a new TV. or you might unplug it let it set for a while and then plug it back in see if it reset itself.

some design need audio signal in to get it wake up from standby mode.

Does your A/C unit have a manual? and can you specify what goes off? does the flashing temperature ever go off? Also do you have any cooling?

press and hold the arrow key for about 3 seconds and release. this puts it into the set mode. then adjust the temp as desired. when you have it, leave it. it will automatically set to that temp in a few seconds

Heat pump Thermastats have Terminals RYW/OW2 G C. I run into this a lot with people buying tStats at home depot. To wire three sages of heat you must have correct tstat. one stage cool and three stage heat. You have to have enough wires at the Tstat. I use white first stage brown second and grey or black third. Make a diagram where each wire goes. Remember to trun of air handler power or you will short the transformer or blow low voltage fuse. Yellow cool, green fan, most of the time blue is c unless it is a battery tstat. orange is O. Red R ot power wire. Rusty

Change the thermostat,It sounds like it is staying closed to long.




Please rate this a fixya

Try to hold the button down for 30 seconds at least before turning the knob to ON.
If you are doing this and it still goes out after you let up on the knob, then it may needs a new flame sensor.