York YU2E18YJ6AMHO-Y Service Manual

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204) If the compressor cumulative running timereaches 120 minutes and T3<-15℃.Defrost Stop ConditionsIf any one of the following conditions is satisfied,defrosting ends and the unit returns to normalheating mode:----T3 rises above than TCDE1℃.----T3 remains at TCDE2℃ or above for 80seconds.----The machine runs for 10 consecutive minutesin defrosting mode.Defrosting Action：off onCool-F910S 30S TimeA 10S4-way valve defrosting Defrosting overcompressorIndoor fanOutdoor fanEXV openfrequencyMax 10 minutesfrequencyCompressor stopsoffAnti-cold controloff480P 480P for 240sCondition of ending defrosting:If any one of following items is satisfied,defrosting will stop and the machine will turn tonormal heating mode.① T3 > TempQuitDefrost_ADD ℃;.② The defrosting time achieves 10min.③ Turn to other modes or off.5.4.3 Outdoor Fan Control5.4.3.1 Cooling ModeUnder normal operating conditions, the systemchooses the running fan speed according to theambient temperature:Outdoor temperature℃4543 Supper high fan speed2826 High fan speed2523 Middle fan speed2220 Low fan speed1917 Supper low fan speed109 Breeze fan speed0-1 F fan speed-5-6 G fan speed-10-11 H fan speedI fan speedWhen low ambient cooling is in effect::Outdoor fan speed control logic (low ambientcooling)When T4 <15 ℃ (59 ℉) and T3 < 30 ℃ (86 ℉),the unit enters into low ambient cooling mode.The outdoor fan chooses a speed according to T3.When T3≥38 ℃ (100.4 ℉) or when T4≥20 ℃(68 ℉ ), the outdoor fan chooses a speedaccording to T4 again.38Exit low ambient coolingmode, run with high fanfor 1 minuteLow302723off