Hitachi RPI-0.8FSG1 Service Manual page 327

(4) Picking Up "Thermo-ON" Signal during Heating Operation (Except for KPI Series)
This function is utilized to pick up the heating "Thermo-ON" signal of compressor running to control a
circulator or a humidifier. Connect wires as shown below. The contact of RYa is closed when
"THERMOSTAT" is ON during heating operation mode.
(In Case of Giving "Thermo-ON" Signal during Heating Operation to 1# and 2# of CN8)
NOTE:
"Thermo-ON" indicates that one of the micro-computer control function "THERMOSTAT" is ON as a
thermostat.
(5) Picking Up Cooling Operation Signal (Except for KPI Series)
This function is utilized to pick up the cooling signal. The contact of RYa is closed when cooling
operation signal is ON despite "Thermo-ON" or "Thermo-OFF". Connect the wires as shown below.
(In Case of Giving Cooling Operation Signal to 1# and 3# of CN7)
OPTIONAL FUNCTION
(4.2 Indoor Unit)
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