Panasonic CS-E18SD3UAW service manual - Page 71

refer to Error Codes Table by using Remote Control or Auto Switch at indoor unit. However,

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Diagnosis display Abnormality / Protection control Abnormality Judgment Emergency Operation Primary location to verify F98 Total running current protection 3 times occurrence within 20 minutes F99 Outdoor Direct Current (DC) peak detection 7 times occurrence continuously Note: "O" - Frequency measured and fan speed fixed. ─  Excess refrigerant  Improper heat radiation  Outdoor PCB ─  IPM (Power transistor)  Compressor The memory data of error code is erased when the power supply is cut off, or press the Auto Switch until "beep" sound heard following by pressing the "CHECK" button at Remote Control. Although operation forced to stop when abnormality detected, emergency operation is possible for certain errors (refer to Error Codes Table) by using Remote Control or Auto Switch at indoor unit. However, the Remote Control signal receiving sound is changed from one "beep" to four "beep" sounds. 71

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71
Diagnosis
display
Abnormality / Protection control
Abnormality
Judgment
Emergency
Operation
Primary location to verify
F98
Total running current protection
3 times occurrence
within 20 minutes
─
Excess refrigerant
Improper heat radiation
F99
Outdoor Direct Current (DC) peak
detection
7 times occurrence
continuously
─
Outdoor PCB
IPM (Power transistor)
Compressor
Note:
“O” - Frequency measured and fan speed fixed.
The memory data of error code is erased when the power supply is cut off, or press the Auto Switch until “beep”
sound heard following by pressing the “CHECK” button at Remote Control.
Although operation forced to stop when abnormality detected, emergency operation is possible for certain errors
(refer to Error Codes Table) by using Remote Control or Auto Switch at indoor unit. However, the Remote Control
signal receiving sound is changed from one “beep” to four “beep” sounds.