General Functionality Si04-11536 Main Function1.15 Peak-Cut Control FunctionOutline In a heating operation, there will be anxiety that a head pressure excessively increases andexceeds the permissible limit in an over load conditions.For avoiding this fact, when the head pressure increases, frequency step down control is carriedout for the protection so that the head pressure will not exceed the permissible limit afterdetecting the temperature of the indoor unit’s heat exchanger (saturation temperatureequivalent to head pressure).Processing∗ J type makes DP1 ~ DP4 increase 2°C in POWER FULL heating operation.∗ DP : Peak cut temperature of heat exchanger" The restriction for frequency is not conducted in the return area by means of peak-cutcontrol." Frequency is increased approximately every 2 Hz/min. in the up-area." Frequency alteration in the steady area is not conducted." Frequency - down is carried out in the step down area approximately every 4 Hz/20sec.." Compressors stop in the stop area.Setting a constant J typeDP0 67°CDP1 56°CDP2 54°CDP3 53°CDP4 46°CStop areaStep downareaReturn areaUp-areaSteady areaDP0Heat exchanger temp. DCHeat exchanger temp. DCDP4DP3DP2DP1 ∗ This function has not time guard.(R1921)
