Dirty coils – An authorized technician will need to clean the coils.Condenser fans broken or running backwards – Have the fans checked, cleaned and repaired by an authorized technician.Broken discharge temperature sensor – Contact an authorized technician to check and repair the sensor.This system fault occurs when there is high temperature input from one of the sensors. Overcharged system – An authorized technician will need to remove charge and check the subcooling.Fans aren’t operating – If the unit’s fans aren’t operating, have the fan’s rotation, fuses and motor blades checked and remedied by an authorized technician.Damaged or dirty coils – Contact an authorized technician to clean coils, comb fins and make any necessary repairs.Dirty coils – Have the coils cleaned by an authorized technician.Condenser fans broken or running backwards – Have the fans checked, cleaned and repaired by an authorized technician.Broken oil temperature sensor – An authorize technician will need to verify if the reading is reasonable.Have an authorized technician check and repair the problem. If this fault appears, this means the system fuse has blown. Contact an authorized technician to check and repair any issues. Broken chilled water sensor – There could intermittent operation with the sensor or shorts in the wiring.Leaving chilled liquid temperature drops faster than unit can unload – There could be restricted flow or rapid flow changes, or the flow is below minimum for the unit.If the reading isn’t comparable, the sensor will need to be replaced.Ĭhiller Fault: Low Leaving Chilled Liquid A tech will compare the temperature reading on the display to a thermometer reading at the sensor. Broken ambient sensor – Have an authorized technician check if the ambient sensor is broken.Ambient temperature too high – The ambient temperature could be above the maximum operating temperature.If the reading isn’t comparable, the sensor will need to be replaced. Broken ambient sensor – Have an authorized technician check if the ambient sensor is broken.Ambient temperature too low – The ambient temperature could be below the programmed operating temperature.Blow line fuse – The fuse will need to be repaired or replaced.Either component will need to be repaired or replaced by an authorized technician. Defective control or display board – The control or display boards could be broken.Wiring and electrical issues – Contact and authorized technician to repair and replace necessary wiring or electrical components.No power supply to the panel – Switch on the main power supply.If there is no display on the control panel and the chiller isn’t starting or running, look for the following causes: Our guide below provides York chiller troubleshooting tips and breakdowns of fault codes for popular air-cooled screw liquid models. If your unit is experiencing issues or displaying fault codes, knowing what is causing it can be tricky. When it comes to HVAC, York is one of the top manufacturers in the industry, making a wide variety of chillers to cool down any large building with ease.

York ycal parts list