ESIE12-06 Function DetailsFunction and Control 65Defrost ControlDefrost Ending ConditionsDefrosting ends when the following conditions have been realized. Note that defrosting can beoperated for 10 minutes at longest.Hp: High pressureTb: Heat exchanger distributor pipe temperatureTm: Intermediate heat exchanger temperature3.2.27 Outdoor Unit Fan Control when Frost is AdheredDuring heating, when frost has adhered to the outdoor unit heat exchanger and the ventilationflue is blocked, the fan sound increases.To prevent this fan noise from increasing, the number of revolutions of fan is lowered.3.2.28 Emergency Operation• No transmission is performed between indoor and outdoor unit.• During cooling, the cycle of operation for 20 minutes and stop for 10 minutes is repeated.• During heating, defrost is performed once every one hour.• Under other conditions, the same control as the normal control is performed.Model ARZQG71L Step 25RZQG100-140L Step 20OFFA HzON ONOFFON ONOFFON ON0 HzDefrosting start Defrosting completeCompressorFour way valveElectronicexpansion valveOutdoor unit fanIndoor unit fan150pls 480 plsprevious control(wet protection control)0 pls (5~60 sec.) 0 pls (5 sec.)Defrost Time > 10 sec.Hp > 2.45 MPaDefrost Time > 1 min.Tb > 10°CTm > 12°CDefrost Time > 9 min.Tb > 8°CTm > 10°COR&&&
