Hitachi RPI-1.0FSG1 - 1.2.3 Troubleshooting in Check Mode by Remote Control Switch

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TROUBLESHOOTING
 “RUN” light flickers and “ALARM” is indicated on the remote control switch.
 The unit No., alarm code and the unit code is alternately indicated on the set temperature section,
and the unit No. and alarm code are indicated on the display of the outdoor unit PCB.
 This alarm code is indicated when the electronic thermal relay for the inverter is activated 3 times
including 3 in 30 minutes. Retry operation is performed up to the occurrence of 2 times.
Conditions: Inverter current with 105% of the rated current, (1) runs continuously for 30 seconds or
(2) runs intermittently and the accumulated time reaches up to 3.5 minutes, in 10 minutes.
*1): Regarding the checking method for diode module, refer to page 1-113.
*2): Regarding replacing or the checking of inverter components, refer to page 1-111 regarding electrical discharge.
Alarm
Code
Protection Activation Against Instantaneous Overcurrent of Inverter (1)
(For 5 to 20HP)
Refer to next page.
Restart operation.
Abnormal
No
Smaller than
activation current.
Yes
(The circuit board is normal.)
Is discharge pressure
high?
Check pressure and
refrigeration cycle.
Is the compressor
current larger than
activation current?
Check the diode
module. *1)
Check the inverter
circuit board (PCB3)
connection. *2)
Normal
Normal
"2"
"4"
Check for clogging of
the heat exchanger.
Check the fan motor.
Replace the diode module.
Abnormal
Connect it correctly.
The inverter circuit board
is faulty. Replace it.
Is the cause of
stoppage " " of
troubleshooting by
7-segments display
"2" or "4"?
380-415V 50Hz
380V 60Hz
220V 60Hz
RAS-5FSG(3), RAS-8FSG(3), RAS-10FSG(3)
RAS-16FSG(3), RAS-20FSG(3)
RAS-8FXG(3), RAS-10FXG(3)
Model
14.0 / 25.0
16.5 / 30.0
14.0 / 25.0
Rated Current