Low-Temperature Alarm. The process temperature has fallen below a user-set temperature value, possibly due to an insufficient heat load or a low-temperature alarm setting that is too high.
High-Temperature Alarm. The process temperature has risen above a user-set temperature value, possibly due to an excessive heat load or a high-temperature alarm setting that is too low.
Over-Temperature Safety Alarm. The process temperature has exceeded a factory- or user-set safety cutoff, possibly due to a problem with the refrigeration system or a temperature safety setting that is too low.
Low-Liquid-Level Alarm. The level of coolant in the reservoir has fallen below an acceptable level, possibly due to evaporation or leaks in the circulation system.
Low-Flow Alarm. The fluid flow rate has dropped below a minimum factory- or user-set safety setting, possibly due to restrictions or blockages in the process lines or equipment, a failing pump, insufficient coolant, or a minimum flow rate setting that is set too high.
High-Pressure Alarm. The process pressure has risen above a factory- or user-set safety setting, possibly due to restrictions or blockages in the process lines or equipment. The installation of a pressure bypass valve can be helpful in applications with naturally high process fluid pressures.
High-Ambient-Temperature Alarm. The ambient temperature has risen above a factory- or user-set safety setting, usually due to changes in environmental conditions, such as a new location or the installation of other heat-generating equipment close to the chiller.
High-Discharge-Pressure Alarm. The refrigerant discharge pressure is too high, possibly due to a dirty or blocked condenser, dirty air filter, failing or failed cooling fan, high ambient temperature, or over-charging of the refrigerant system.
Low-Discharge-Pressure Alarm. The refrigerant discharge pressure is too low, possibly caused by refrigerant leakage, clogging of the condenser tubing, under-charging of the refrigerant system, or low ambient temperatures.