ironmen
02-06-2011, 10:42 PM
Hi chillers guys out there,got a service call yesterday on a 30hxc unit and the complaint was the building was to cold.at the moment its winter here and the unit was not heating.when i got into the plant room i saw the system runing on one stage only and its just cycling evry two minutes.my condenser inlet was 19 dc and outlet 20dc.evaporator side was 4dc inlet and outlet.when i check on the BMS there was a couple of very low temperature alarm displaying.but on the prologic control on the chiller there was no fault at all.as if evrything is normal.but ive open the logic control and i heard a nonstop ticking noise that was'nt there before.I havent really get into it to check whats going on.one more thing ive got a full 100% terminal load for heating.any suggestion guys will be much appriciated.