Control Specification SiUS121502E66 Function and Control3.4.5 Compressor Protection FunctionWhen turning the compressor from OFF to ON, the upper limit of frequency is set as follows.(The function is not used when defrosting.)3.5 Discharge Pipe Temperature ControlOutline The discharge pipe temperature is used as the internal temperature of the compressor. If thedischarge pipe temperature rises above a certain level, the upper limit of frequency is set to keepthe discharge pipe temperature from rising further.Detail18 class 24/36 classA (Hz) 55 35 ~ 55B (Hz) 65 48 ~ 65C (Hz) 80 70 ~ 80D (seconds) 180 120E (seconds) 360 200 ~ 500F (seconds) 400 180 ~ 470AD E FBC(R13528)(Hz)Frequency(sec.)TimeZone ControlStop zone When the temperature reaches the stop zone, the compressor stops.Dropping zone The upper limit of frequency decreases.Keep zone The upper limit of frequency is kept.Reset zone The upper limit of frequency is canceled.18 class120˚C (248˚F)103˚C (217.4˚F)102˚C (215.6˚F)100˚C (212˚F)95˚C (203˚F)24/36 class120˚C (248˚F)111˚C (231.8˚F)109˚C (228.2˚F)107˚C (224.6˚F) +107˚C (224.6˚F) +ABCDEReset zoneStop zoneDroppingzoneKeepzone(R14266)ACDEBDischarge pipetemperature+ The same value continues.