My outside unit does not turn on itself, but it does work. I just did a quick repair just thinking it was the capacitor and it was only 15 dollars for a new one so I changed that out and still had the same problem. After this I pushed in the contactor and the unit will turn on so I measured for voltage and am not receiving 24 volts to the unit. I just moved into this house so do not know what was done beforehand but we have two thermostats one controls the ac the other the heat. When I measure the voltage across R to Y, or from R to G, I receive 24V. The wiring that is connected at C and Y are going to the outside unit and I do not get any Voltage across here which in turn means it is not sending out the 24V to the AC Unit i believe. The wires connected at Y and C are going directly to the unit outside. The wires at RGY are connected to the thermostat as far as I can tell. I should mention that the fan will come on in any operation. set to on it comes right on. If in auto it will also come on (on the thermostat).

I also double checked the wiring on the thermostat and it looks wired correctly but there are two sets of wire connected to the thermostat but only one set connected to the transformer and the other is just hanging there next to it. my ac unit is not turning onIt will not let me show the picture where the wire is hanging but it is there to the left of the transformer.parts for an ac unit Is this wired correctly?best rated window ac unit electrical wiring hvac air-conditioning thermostat Browse other questions tagged electrical wiring hvac air-conditioning thermostat or ask your own question. Why is My Home Air Conditioner Blowing Warm Air? Back to Blog Page Take advantage of these seasonal offersIt’s a bizarre, yet common sight.

There you are in the middle of summer. The sun is beating down. Everyone is wearing shorts. And your outside air conditioner unit or heat pump is caked in solid ice. How is it possible for an air conditioner to look like an igloo, even in the warmest summer months? Needless to say, it is abnormal for ice to form on an air conditioner, and it is certainly cause for concern. Several common problems can cause air conditioner freeze-ups: The buildup of ice and frost is a sure sign that your air conditioner is not operating properly. If you notice a decline in your system’s cooling capacity, ice build-up should be the first thing you suspect. Air conditioner freeze-ups should be addressed immediately; continued ice accmulation can cause permanent damage to your a/c unit. The first thing you should do once you notice your air conditioner is frozen is to turn it off and let it defrost completely. Once it has defrosted, check the airflow. Clean or replace dirty filters or remove any visible dirt or obstructions;

in some cases, this could be all that is needed. More serious airflow and refrigeration problems require professional intervention. Schedule a Service Call with Horizon Services; your Horizon service technician has all the tools necessary to troubleshoot serious air flow problems and repair refrigerant leaks. If your icing problem is due to drops in the outdoor air temperature, be sure to turn your air conditioner off when the mercury takes a drop. You should also consider installing a special ambient temperature control that will allow the unit to run properly in cooler temperatures. While all HVAC equipment should be checked by a professional once a year, and an HVAC professional should always be called in to deal with major issues or repairs, you can extend the life of your HVAC system by performing an annual precison tune-up. And, if you are ready to install or replace your air conditioner or heater our friendly and experienced team of Comfort Specialists know air conditioning and heating systems inside and out.