Haier AB122ACERA Service Manual - Page 36

Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA Initialize movement: 600 pulse close, then 50 pulse open, that is stop at 50 pulse at last; Full-open: 480 pulse open(E); Upper/lower limitation of open angle: 480---50 pulse; Driving speed: open direction: 30.3 PPS; close direction: 83.3 PPS; Electrify initialize movement: act as full-close; The movement of valve after compressor startup/shut off ; Compressor startup: the compressor will startup after the open angle of valve has reached the fiducial open angle; Compressor shut off: valve begin to full-close after the compressor has stopped. 1.3.2 Enter the fiducial open angle after compressor startup(no matter 2 minutes later or 2 minutes ago), 4 minutes later adjust automatically according to the target over-heat value, 10 minutes later begin to modify the over-heat value and open angle of valve. Cool Outdoor temp. ~22℃ 22℃~ Compressor frquency ~50 50~80 80~ ~50 50~80 80~ PMV open angle 230 220 240 260 250 280 Heat Outdoor temp. ~6℃ 6℃~ Compressor frquency ~50 50~80 80~ ~50 50~80 80~ PMV open angle 200 180 220 240 230 260 1.3.3 Confirmation of over-heat degree Standarded over-heat degree Actual running Hz ~20 ~30 ~40 ~50 ~60 ~70 ~80 ~90 90~ TXRH0 Cool, dry 2 2 1 1 1 1 1 2 2 （℃） heat 2 2 1 1 1 1 1 1 1 When discharging temp. Td is too high or too low, modify the EEV angle Mode Cooling Cooling Heating Heating Modification angle Ttc＞100℃, standarded over-heat degree -1 degree / 2 minutes 90℃< Ttc