AC turn off before it reaches the desired temp

HOME A/C units are designed to shut off when the desired room temp is reached.it is called Cycling. when the temp control unit senses that the temprature is too high then it will turn the unit back on till it again reaches the temp it is set oto

What are you using to measure the temperature of the oven? If you using a typical round oven thermometer, the reason is that your thermometer response is slow. It takes about 20 minutes for those thermometers to reach and display the actual temperature, and your oven is probably reaching it's set temperature in about 10 minutes. You really need an electronic thermometer or at least one of those liquid thermometers which you can sometimes find at Ace Hardware or True Value Hardware stores.

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Is this a gas fired furnace? If so it may be going off because one of the safeties is tripped. There is a high temp safety that will shut the unit down when this temp is reached. The usual cause is low airflow. Check your filters, if these are OK you may have a blocked coil which should be professionally cleaned.

so your reported figures show that the unit is operating as planned
the closer to ambient temp the shorter it runs for
the further away from ambient temp the longer it runs for
when the desired temp is reached , the compressor will stop but the fan will continue to run to circulate air past the thermostat so that it will switch back on when the room temp reaches too high temp
and that is why it is recommended to set the temp at 25 C as that is the most economical temp to run it at

thats simple. this is caused by weak power button of board. let me know if you dont know how to do this.

if it is a new one must be looked at under wantey

Hi, thermostats is not problem , it's asking for cooling when it should, it's your condensing unit outside, if mechanics said, system is o/k. then it's location of condensing unit, check location of your condensing unit, in relation to direct sunlight, condensing unit best location is always a cool place, preferable away from direct sunlight, check to see, when unit is doing that, if it's expose to direct sunlight, that could be your problem, direct sunlight for long periods could cause the high pressure & temp. controls malfunction. or maybe system is not fully charge with freon, double check freon charge. if direct sunlight is your problem, build a shade or change location of condensing unit, good luck.

GE use and care manuals

just bought one.It looks like the thermostat has problem. Set at 78 F, it runs forever and the room temp is 72F. Set at 79F, it runs, room temp shows 73 F, sometimes 75F or 77F. The Ac is on then off every 5 minutes even the desired temp (is set) reached. Lousy machine.

Sears Kenmore Electric Wall OVen, Mod.#9114012192 purchased in 1993. Set oven for 425 degrees, reaches set temperature, stays on about 10 minutes and temp. display goes out and oven starts cooling down. Will not stay on desired temp.to cook. Can you tell me what my problem is? Thanks. Doug.