Condensing temperatures often give technicians valuable hints as to what the problem may be within a refrigeration system. The high side of the refrigeration system offers valuable information to the wise technician.
Most technicians would rather troubleshoot the refrigeration system's high side than the low side. This is because almost all the heat absorbed in the system is rejected in the condenser. All the heat absorbed in the evaporator and the suction line is rejected in the condenser.