Panasonic OCU-R200SF, Service Manual

Page: 51 / 52

Cause
§ Detected reverse phase or loss of phase.
§ Condenser fan motor protection breaker (EB4) has
been turned OFF.
§ Discharge gas temperature increased to 130
°
C or
higher and generated an abnormal stop.
§ Discharge gas temperature sensor shorted.
No serial communication signal between the control PCB
and the inverter for 10 minutes.
High pressure condition, that is higher than ordinary
value, continued for 80seconds.
Suction gas superheat became
1 K or below continuously for
2 min. (Except for when compressor stops.)
Suction gas temperature increased to 24
°
C or higher for
30 minutes. (Except for when compressor stops.)
High pressure sensor became abnormal (open circuit
condition).
Suction gas temperature sensor became abnormal (open
circuit condition).
No controller signal exists in communication.
High pressure increased to 2.83MPa or higher and
generated an abnormal stop.
Thermal relay starts operating due to over current of the
compressor.
Abnormal stop caused by increased discharge
temperature to 130
°
C or higher occurred 3 times in
2 hours.
Discharge gas temperature sensor became abnormal
(open circuit condition).
Low pressure sensor became abnormal (open circuit
condition).