Hitachi RAM-68NP3B, Service Manual, Page: 32 / 79

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Notes:
(1) Cool dash is started when the operation is started at fan speed “AUTO” or “HI” or when the fan speed is changed to “AUTO” or “HI” during cooling operation, and when the
compressor speed (P item) reaches (CMAX_M or CMAX2_M) or higher.
(2) The maximum compressor speed period during cool dash is fi nished.
1 When 25 minutes have elapsed after cool dash was started.
2 When the room temperature reaches the cooling set temperature -1°C (including cooling shift) and then becomes lower than the preset temperature by 0.66°C after the steady
speed period
3 When thermo is OFF.
(If cool dash fi nished in the above 1, the compressor does not go through the steady speed period but it starts fuzzy control.)
(3) The thermo OFF temperature during cool dash is cooling set temperature (including cooling shift) -3°C. After thermo OFF, cool dash is fi nished and fuzzy control starts.
(4) The compressor minimum ON time and minimum OFF time is 3 minutes.
(5) The time limit for which the maximum compressor speed (CMAX_M or CMAX2_M) during normal cooling can be maintained is less than 60 minutes when the room temperature
is less than CLMXTP_M: it is not provided when the room temperature is CLMXTP_M or more.
(6) Compressor speed is determined by instruction sent from indoor unit and corrected by outdoor unit according to such factors as capacity, fan speed, number of units being operated,
outdoor temperature, discharge pressure and etc.
(7) If another indoor unit is doing heating operation, cooling operation cannot be done.