Ac Unit Contactor Keeps Burning Out

Other tech replaced 10 months ago.

Ac unit contactor keeps burning out.

It seems that ever year or so i need to replace my contactors because they have burnt out. A contactor is one electrical component that can be found in multiple parts of your air conditioner and it plays a crucial role in the distribution of power to your system. Ac contactor failure symptoms. If your transformer is not producing the minumum 24 volts ac at the contactor coil it will cause the contactor contacts to chatter and quickly burn up the contactor.

There are 3 main signs which indicate a bad contactor in your ac. If your 25 va transformer is being over worked then it will burn it up right away. Ac hums and won t turn on. This could be a sign that the contactor has melted leaving the air conditioner with no means to block electricity.

Checked amps 14 for compressor run winding before contactor and after. This message has been edited by pinemarten edited 09 08 2003. Coming to the knowledge pool. Last time i had someone out the guy said it seemed to be pulling a lot of amps on the first start up.

The condenser unit never shuts off. When you turn on the ac you may hear the air conditioner humming but it won t fully power on. Went to home to replace burnt contactor. One wire on line side completely burnt off burning that side of contactor.

The wire that was burnt goes from contactor to run winding on compressor. In case your thermostat is clicking on. I have had professionals out to look at it but there never seems to be anything wrong with it. Since you don t want the air conditioner to fail during the hottest months of the year pay attention to these symptoms of a bad ac contactor.

If that is not the case it is not getting the much needed electric current. Today we re going to talk about what an air conditioner contactor is what can go wrong with a contactor and what you can do to prevent problems with your air conditioner. These are 1. The other pole completely brand new looking.

However the unit itself isn t operating the contactor is most likely completely gone. Ac makes a chattering noise. If the armature is sticking or catching on something then it would have the double effect of not closing the contacts all the way so they burn out and burning out the coil because the air gap isn t closing.