Hitachi RAK-18QXB Service Manual page 76

Indoor unit
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HOW TO CHANGE THE FAN SPEED IN COOLING MODE DURING THERMO OFF
The fan speed in Cooling mode during thermo off can be changed by the remote controller.
(This procedure shall be implemented strictly by service personnel only.)
It is possible to return it to the default setting.
PROCEDURE
Press
[ POWERFUL] button and
   
when the remote controller is OFF.
Transmission sign lights up with beep from indoor unit simultaneously.
Beep sound pattern : 1) Default setting : Short beep
Beep sound pattern :
Beep sound pattern :
Beep sound pattern :
Beep sound pattern :
NOTE :
(1) The selected fan speed will remain unchanged after the unit is turned off.
(2) If Timer reservation has been set, it will be canceled.
(3) During time setting and timer setting, this operation cannot be set.
2) Changed setting : Double beep
2) Changed setting : Double beep
2) Changed setting : Double beep
2) Changed setting : Double beep
[TIME
( UP)]] button simultaneously for about 5 seconds
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