Panasonic OCU-R200SF, Service Manual

Page: 39 / 52

For some reasons, if the condensing unit or refrigerant circuit part fails to work, turn off the power before repairing.
In order to avoid repeated failures, please pay attention to the following points
(1)In order not to repeat the same failure, ensure to carry out the failure diagnosis and identify the broken part
and its cause before repairing
(2) When repairing the pipes, make sure to recover the refrigerant and braze the repair part while running the
nitrogen gas through the pipe.
(3) When replacing the major parts of compressor or condenser, or when replacing refrigerant or oil, please
make sure to replace the filter dryer. If the inside of the refrigerant pipe is very dirty due to, for example,
compressor motor burning, please blow nitrogen gas through the pipe in order to remove the remaining oil
in the refrigerant circuit. (Please remove expansion valve at this time.)
(4) When repairing/replacing/disposing the condensing unit, please make sure to recover all the refrigerant.
(5) For parts' failure, please just replace the broken parts, instead of the replacement of the entire unit.
(6) The broken part should be replaced with the same model that is written on the part. When the parts number
is unknown, please consult with us. When replacing a fuse, please make sure to use the designated
fuse with silica sand. (The other fuse may explode at the time of fusing.)
(7) In order to prevent the earth leakage accidents, please make sure to put all parts that are removed during the
check service (e.g. cover, electrical part, etc.) back to their original places.
(8) Prevention of idle heating of crankcase heater:
When replacing compressor, please make sure to turn off power so that the electricity will not run through the
crankcase heater while the crankcase heater is detached from the compressor (prevention of fire).
(9) After repair, make sure to test the operating condition, just like test operation. Particularly, check if the
failure will not occur again.
* For the failures which the causes are not clear, please record the failure appearance, model number,
and manufacturing number, then contact with after sales engineers.
The following table shows the abnomal status of unit
In case of failure alarm, please check the cause of the alarm and consult relevant professionals for troubleshooting if necessary.
Page
35
Auto Reset
Reset Way Items
External
Alarm
serial
communication
Compressor Status
Troubleshooting Guide
What to do in case of failure
When the unit fails to work or has a problem, please ask the specialized agency to repair.
Abnormal alarm instructions
Compressor Motor
Fault
E07 Yes Yes Stop
Auto Reset
Condensing Sensor
Alarm
E05 Yes Yes Stop Auto Reset
Discharge Sensor
Alarm
E04 Yes Yes Stop
Correct phase sequence
High Discharge
Pressure Alarm
E03 Yes Yes Stop
Reset the Power OFF or Manual
Switch OFF
Anti-phase Protection E00 Yes Yes Stop
Yes Stop Auto Reset below 75
℃
Over-current Alarm E02 Yes Yes Stop Reset the Power OFF or Manual
Alarm
Code
Discharge Temp.
Abnormal
E01 Yes