Question about Carrier Heating & Cooling
I have all the rite voltage to circuit board in a/c but no comunication lite and no a/c.infinity controler calls for cool and blower comes on.no a/c
Posted by Anonymous on
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Posted on Jan 02, 2017
We have a Carrier A/C, Model# 2397E15183 (INSIDE) about 12 hours ago (I believe it is a fan) started making a kind of grinding noise when it starts up and when it cycles off, this is located at the bottom portion of the unit. It is cooling well and the outside unit works fine.
Posted on Jul 15, 2008
Hi!!! Does your ac unit work fine?If not check your low voltage problem..You have a low voltage problem check the wire going out to your condensor make sure that they are not touching..Good luck..Check low voltage wires..short in progress..
Posted on Jan 04, 2009
There should be a little black sensor bulb outside either on the unit normally under the electrical panel or inside it. It sound like the wire has come off or been disconected. It needs that on to properly run. Your control is trying to communicate with the outdoor unit and can not.
Posted on Jul 08, 2009
If the low pressure sensor trips, the least likely problem is a bad sensor, more than likely, you have a leak in the system, this will require leak location, repair and recharged.
Also posible, a dirty air filter, plugged indoor coil, causing the indoor coil to ice up, causing a temporary low pressure issue, solution would be to clean the coils, power the system down and restart and test.
If this has been helpful, please rate the new guy :)
If you have any other questions, please give me a shout.
Posted on Apr 06, 2010
SOURCE: blower motor does not respond?
First, Open the Blower Access panel door of your air handler and touch the motor to see if it is hot to the touch.
If it is hot to the touch, turn everything off of approximately 1 hour.
Then with the blower access panel door off, turn the FAN back on and listen for any sounds. If the motor does not start, try spinning the blower wheel with your hand.......be cautious, because the motor could start up while you turn the wheel. If this happens, chances are good you have either a bad capacitor or bad bearings. To test the bearings, turn off all the power. Grab the end of the shaft and start trying to move it from side-to-side in every direction. Do not move it up-and-down. Up-and-down will not hurt anything, but it will not tell you anything either. If there is any movement side-to-side, the bearings are bad and the motor will need to be replaced. If you do not feel side-to-side movement, then there is a good chance it's the capacitor.....take to A/C supply house....they will test and offer you a replacement if it is needed.
If the motor is cold and it doesn't try to spin and it doesn't try to run on it's own after you spin it, then the problem is in the control circuit. Try putting a jumper at R & G. If the motor then runs, you have a problem with either your thermostat or the wiring from your thermostat to your Air Handler. If after jumpering R & G the motor does not try to run, then you may have a failed blower relay or a failed board (if the relay is internal in the board). Let me know if you need additional help. :-)
Posted on Apr 16, 2010
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