Panasonic S-36PU1E5A Service Manual page 590

F31 Outdoor Unit Nonvolatile Memory (EEPROM) Trouble
1. Error Detection Method
It is judged an error based on the criteria listed below.
• When power initially turned ON for the first time, nonvolatile memory (EEPROM) is not installed.
•
Read values after writing onto nonvolatile memory (EEPROM) is inconsistent.
2. Error Diagnosis
1 PC board
1-1
1-2
1-3
5
Does EEPROM exist on the control PC board?
Is EEPROM installed properly?
(Check: Bent IC pin or incorrect installation, etc.)
Incorrect EEPROM
Replace with correct EEPROM.
5-34
Yes 1-2
No Install EEPROM
Yes 1-3
No Correct