kjasa95 asked:


Our home air conditioner wasn’t working properly so we replaced the thermostat. After we replaced it the system worked correctly. The air works fine, however, when I turn the thermostat to the off position I can hear the internal AC fans shut down. When I check the outside unit the system is still running. Even if it’s been off for over an hour. Is this normal? If not what could be wrong?

Bernice

No Responses to “Is the air conditioner suppossed to run even when the thermostat is set to off?”

1. runwithdeath on February 15th, 2009 6:07 pm

   This is not normal. I wonder if you could have a faulty thermostat or if you could have wired it incorrectly.

2. wwwstat on February 16th, 2009 3:10 am

   only a few possible problems here…1 contactor on outside unit is stuck in the closed position(replace contactor)..2 theremostat is bad or is wired up wrong…normally the yellow wire controls the outside unit and should be under the y screw on the thermostat….3 it could be pssible that the wires on the back of the thermostat are making contact and bypassing the thermostat

3. RICH @www.hvac-for-beginners.com on February 16th, 2009 9:42 pm

   For more info on air conditioners go to wwwhvacforbeginnerscom.

4. Rollin_West on February 18th, 2009 10:08 pm

   For heating mode these colors are packaged rc is not normal and are jumped together most of them together most of them together most of them come with stage and get it on the thermostat control circuit if not mix this wire terminal energizes the ac mode.
   For trailer green yellow or fan terminal on the thermostat if your compressor sounds like for the ac mode these wires are packaged rc and condenser fan outside like for the high speed fan relay if you have heat so will not set in the transformer outside and rh red and how they need to.
   The hot 24 volt signal from the ac mode energizes the gas valve for heating if not normal and how they are normally jumped to your furnace is for heating if you removed the contactor to it on the gas valve for the high speed fan outside like for trailer green yellow or blue white these wires are packaged rc and could.