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Hitachi RAK-18QH8SW - Page 40

Hitachi RAK-18QH8SW
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– 43 –
Exp
Operation mode: HEATING
Indoor fan speed: AUTO
Thermo ON and thermo OFF depends on room temperature.
Indoor fan speed changes during thermo ON and thermo OFF depends on:
1. Heat exchanger sensing temperature
2. Time
Room temperature factor
Thermo ON condition: Room Temperature remote setting + 0.66¡C
Thermo OFF condition:Room Temperature remote setting + 1.33¡C
Remarks: 0.66¡C and 1.33¡C are preset temperatures in the micon.
Heat exchanger sensing temperature factor
Time factor
Single
Multi
During Thermo OFF, fan speed depends on below table:
Note: Value of HEX Temp H, HEX temp M, HEX temp S are preset value in the EEPROM.
As the heat exchanger sensing temperature varies, fan speed varies.
Thermo OFF delay time (heating) - preset value in EEPROM of the indoor unit.
During Thermo ON, fan speed depends on the heat exchanger sensing temperature.
Heat exchanger is located on the indoor unit heat exchanger.
1: Room temperature 18¡C - fan speed = STOP
Room temperature 18¡C - fan speed = Silent
When thermo OFF starts - within 15 seconds
During thermo OFF - after 15 seconds
Fan speed = Lo
Fan speed = Silent 1
Fan speed = Lo
Fan speed = (ON / OFF)
When thermo OFF starts - within 15 seconds
During thermo OFF - after 15 seconds

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