Hitachi RAC-18WPD, Service Manual

Page: 43 / 93

Notes:
(1) Condition for entering into hot dashed mode. When fan set to "Hi" or "Auto" and i) room temperature is 18 or less, and ii) outdoor temperature is 10 or less,
and iii) compressor speed (P section) due to temperature difference between setting temperature(including shift value only) and room temperature is WMAX
or more.
(2) The maximum compressor speed period during hot dash is finished when ) room temperature has reached the setting tempe SFTDSW. ) thermo off.
(3) During hot dashed operation, thermo off temperature is setting temperature (with shift value) +3 . After thermo off, operation continue inn Fuzzy control mode.
(4) Minimum "ON" time and minimum "OFF" time of compressor operation is 3 minutes.
(5) During normal heating mode, compressor maximum rpm WMAX will maintain for 120 minutes. No time limit constrain if room temperature is 18 or less and
outdoor temperature is 2 or less.
(6) During preheating or defrosting or auto fresh defrosting mode, indoor unit operation lamp will blink.
(7) When heating mode starts, it will enter into preheating mode if indoor heat exchanger temperature is less than YNEOF + 0.33 .
(8) When fan is set to "Med" or "Lo" or "Silent", compressor rpm will be limited to "WJKMAX" or "WBEMAX" or "WSZMAX".
(9) During "Ultra-Lo" mode, if room temperature is 18 or less, indoor fan will stop. If room temperature is 18 + 0.33 or more, fan will continue in "Ultra-Lo" mode.
However, "Ulrta-Lo" mode during preheating or preheating after defrosting does not stop if room temperature is 18 or less.
(10) During hot dashed or outdoor temperature is -5 or less, compressor rpm is WMAX2.
(11) During hot dashed, when room temperature reaches setting tempe SFTDSW compressor rpm is actual rpm x DWNRATEW.
i i i