Answer: If the contactor is not getting the 24 volts to the contactor coil then it could be a time delay relay (if the unit is equipped), thermostat problem, transformer problem, safety control, (low on refrigerate) wiring problem, or a condensate pump, secondary drain pan safety switch problem.Jul 31, 2012
Why is contactor not holding?
Holding Does Not Close If the sealing circuit does not close, the cause could be from damaged or burnt contacts or any loose wiring connections in the contactor auxiliary contacts. Normally, the contactor holding should close when there is power.Feb 9, 2010
Why is the contactor not pulling in?
When the contactor does not “pull-in”, it means that the connections do not close to power the compressor. As a result, the AC works, but in the absence of a working compressor, it does not cool the home.Aug 5, 2019
How do I know if my AC contactor is bad?
- The condenser unit never shuts off. This could be a sign that the contactor has melted, leaving the air conditioner with no means to block electricity.
- AC hums and won't turn on. ...
- AC makes a chattering noise.