ESIE05-03 Outdoor Unit Functional ConceptPart 2 – Functional Description 2–49324513.3.4 High Pressure Protection ControlOutline In order to prevent abnormal high pressures in the system and hence avoiding activation of the highpressure safety device the below control function will be activated.Details The high pressure value will be calculated from the low pressure, power input and compressorfrequency. In case of RZQ100~140, low pressure is a calculated value.P HPS opens at : 40 bar (tolerance: +0 / -0.15)P HPS closes at : 30 bar (tolerance : +/- 0.15)Flow chartParametersNormal operationORHp > (C) bar15 times orless stop-ping in 300minutesNormal operationCompressor operationfrequency B HzCompressor stopMalfunction stop (E3 indication)Malfunction stop (E3 indication)Compressor stopCompressor operationfrequency A HzCompressor operationfrequency –1 step/10 secCompressor operationfrequency +1 step/1 minCompressor operationfrequency +1 step/5 minHp > (D) barHp > (C) barOROR&&Hp < (H) bar • Hp > (E) bar*• HPS activates• HPS activates• Stopped 16 times in300 minutesHp < (F) bar• HPS activates• Hp > (E) bar for1 minute• HPS activates• Stopped 16 timesin 300 minutes(When cooling operation) (When heating operation)Hp < (G) bar • Hp < 3.24Mpa• 30 sec elapsedNote: (E) bar* = (E) bar for 1 minuteRZQ71B RZQ100~140BA Hz 79 Hz 58 HzB Hz 62 Hz 58 HzRZQ71B RZQ100~140BC bar 35.3 bar 35.3 barD bar 36.3 bar 36.3 barE bar 38.2 bar 38.2 barF bar 34.8 bar 34.8 barG bar 32.9 bar 32.9 barH bar 33.8 bar 33.8 barI bar 38.2 bar 38.2 bar
