17914.5 Compressor Discharge Temperature Control• This control will operate if compressor discharge temperature is detected hot at alert level.o If Compressor Discharge Temperature 100°C, liquid bypass valve will open.o If Compressor Discharge Temp 105°C, compressor frequency will reduce 10% if the compressor dischargetemp still at down zone.Comp Frequency Control90 oC90 oC 105 oC105 oC 110 oC110 oCComp Frequency ControlLiquid Bypass Valve Control80 oC80 oC 100 oC100 oCLiquid Bypass Valve ControlUnchangedzoneClose(OFF)Open(ON)UnchangedzoneClose(OFF)Open(ON)FreeZoneUnchangedzoneCompStopDown ZoneFreeZoneUnchangedzoneCompStopDown Zone• The compressor frequency will only reduce max 2 times with 3 minutes interval OR to minimum frequency.• If compressor already reduced to minimum level but temp still at down zone, gas bypass valve will opens.14.6 Compressor Restart Delay Control• Compressor only can be startup after at least 3 minutes of compressor OFF.• During this control, compressor cannot restart and gas bypass valve is ON.14.7 Outdoor Residual Heat Removal Control• When compressor OFF, outdoor fan operate for 1 minute to remove the remaining heat.14.8 Compressor Stops Control• This control ensures compressor is stopped within 30 seconds during normal operation.• If compressor stop is due to protection control, compressor will stop immediately.Comp Frequency (Hz)Time (Sec)Normal ControlMax 30secComp Stop Signal• Outdoor fan motor will continue to run at maximum speed for 60 seconds after compressor OFF signal isreceived.• Gas bypass valve will ON for 3 minutes once received compressor OFF signal.14.9 Cooling Low Outdoor Ambient Temperature Protection Control• When outdoor is operating in Cool Mode if outdoor ambient temperature is below -15°C and compressor isoperating for 15 minutes, compressor will stop.• When outdoor ambient temperature is less than -10°C, the system will restart.14.10 Heating High Outdoor Ambient Temperature Protection Control• When outdoor is operating in Heat mode, if outdoor ambient temperature is more than 35°C and compressor isoperating for 15 minutes, compressor will stop.• When outdoor ambient temperature is less than 27°C, the system will restart.
