Hitachi RPI-0.8FSG1 Service Manual page 326

OPTIONAL FUNCTION
(4.2 Indoor Unit)
(2) Picking Up Alarm Signal
This signal is utilized to pick-up activation of safety devices and is normally indicated on the remote
control switch. However, this function is not available under abnormal transmission conditions.
Connect the wires as shown below. Please note that the contact of auxiliary relay, RYa is closed
when one of the safety devices is activated.
(In Case of Giving Alarm Signal to 1# and 3# of CN7)
(3) Picking Up Heating Operation Signal (Except for KPI Series)
This function is utilized to pick up the heating operation signal. The contact of RYa is closed when
heating operation signal is ON despite "Thermo-ON" or "Thermo-OFF". Connect the wires as shown
below.
(In Case of Giving Heating Operation Signal to 1# and 3# of CN7)
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