Hitachi RPI-0.8FSG1 Service Manual page 22

TROUBLESHOOTING
(2) Failure of Constant Speed Compressor
a. Contents of Operation
(Applied Models: RAS-8FSG(3), 10FSG(3), 16FSG(3), 20FSG(3), 24FSG1(5), 30FSG1(5) /
RAS-8FXG(3), 10FXG(3))
* This operation is an emergency operation by the inverter compressor, when the constant speed
compressor is failed.
* This operation is controlled by a normal control.
b. Operating Condition
* Set the No.2, 3 or 4 of DSW7 on the PCB1 at the "ON" side. (In case of 5 to 20HP)
* Set the No.1, 2, 3 or 4 of DSW7 on the PCB1 at the "ON" side. (In case of 24 and 30HP)
* Temperature of THM2, THM3 and THM4 on the top of compressors are not ignored by setting
DSW7.
If the thermistor is short-circuited or cut, this operation is available.
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