Hitachi RAK-18QXB Service Manual page 42

(1) Pressing the "POWERFUL" button will reduce the temperature setting by PWSFTSD.
(2) The powerful operation is for 20 minutes after setting.
(3) Operation is continued forcibly thermo-ON for 20 minutes after the powerful operation is finished.
(4) Pressing the "START/STOP" button and "POWERFUL"button during powerful operation wil cancel the powerful operation.
(5) If the sleep timer is set during powerful operation, the powerful operation will be canceled.
(6) If the differential(the room temperature - the temperature setting) is "the differential≧3 ℃" after powerful setting , the compressor's
maximum speed during powerful operation will be set to SDMAX. Then the differential reduce "the differential ≦2.33 ℃" during powerful
operation,the compressor's speed will be set to SDRPM.
If the differential(the room temperature - the temperature setting) is "the differential
minimum speed during powerful operation will be set to SDRPM.
(7) After the powerful operation is ended, the system automatically operates with the previous settings used before the powerful operation.
3 ℃" after powerful setting , the compressor's
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