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Condenser fans cycle on and off to control the temperature/pressure of the refrigerant in the condenser. This is normal operation.
As to cooler weather start up and tripping the breaker; how cold is it when you are running it? If it is too cold you could be pumping liquid refrigerant back to the compressor, slugging it and causing it to trip a breaker. However, many things can cause an air conditioner to over-amp and trip a breaker but this tends to be more problematic as the weather is hotter.
Sometimes on new units it is common for the fan to not start until you give it a push. Did you happen to hear if the compressor was operating? If the unit was froze-up the Insulated Suction line would also be iced over as well. If it wasn`t it is more likely that either the compressor was not operating or it shutoff due to
high discharge pressure and can only be reset on its
own or cooling the compressor off with cold water.
Sounds like there is a problem with your unit. The cooling tower doesn't have anything to do with the compressor other that the delivery of water to your heat pump. The compressor is probably shutting off on a low pressure because the water is cooler than in summer. I think the heat pump you have is low on charge or has a defunct TXV.
have your unit cleaned first, if it is cleaned and still the trouble persist. check if the compressor works. if not check the running capacitor for leak. if all are working fine have your unit system reprocess.
ok now you said,the system was checked to be sure the refrigerant level was full . It could also be over full causing a over preasure shutdown. The compressor has a low and high pressure switch, that will disengage the compressor clutch if it senses a over or under preasure situation to protect the system.Did you check to see if the compressor clutch was Engaging and will it stay Engaged or disengage and keep cycling like that? you Will need to get the preasures on the high and low side of the compressor from a gauge manafold set and please record the outside temp. it will change the preasures in the a/c system than i can better help with the issue you have. also a/c will always work better if recirculated air is used, because it is already cooler than out side super heated air.
my name is ron and if you get the preasures for me i will be glad to check the preasures to My R-134 refrence card
May need to wash out the out door coil. Normally spray through rear coil at about a 30 degree angle. try not to spray water directly into fan motor. If unit is freezing up it may be low on freon. if it is real hot out you may need to run 24 hour a day. High indoor humidity will affect its output also. could have weak compressor. check temp drop accross indoor coil. Shoud be 20 - 30 degrees in most cases cooler than room temp.
Sounds like the relay went bad not giving the compressor enough electrical to start up which is why you are not getting the cold air. I would recommend if it is under warranty to just let a company work on it and let them deal with the pproblem