Panasonic OCU-CR200VF5 Service Manual page 35

Troubleshooting for Each Error Code
E 8 2
Indication
Probable
1. Refrigerant shortage was detected.
Cause
1. Check the cooling condition of a refrigerator, freezer, or showcase.
Check
2. Check if any gas leak from connecting pipe, etc.
1. When refrigerant shortage is confirmed, charge additional refrigerant.
(1) Perform cooling operation and charge additional refrigerant from the access port of the
low pressure service valve.
Corrective
(2) Adjust valve opening during slow charging operation to avoid frosting beyond the
Action
service valve.
(3) Guideline of charging rate of refrigerant is 20 g per 5 sec.
Rapid charging forces liquid slugging by the compressor and may lead to a failure.
(4) After completing refrigerant charge, close the access port of the low pressure service
valve. (Set the low pressure service valve to the back seated position.)
2. When refrigerant gas leak is confirmed, refer to "Gas Leak Repair Procedure" , and repair
the gas leak position.
Detected
• Refer to "Service Pipe Connection/Disconnection Method".
• Set the low pressure service valve to the Mid-position (the access port is open),
and the high pressure service valve to the back seated position.
Refrigerant shortage alarm
Content
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