Panasonic S-45PU1E5 Technical Data & Service Manual page 320

P14 O sensor detect
2
1. Error Detection Method
• It is judged an error whenever the outdoor unit receives the signal "O
• With the indoor unit's EEPROM setting (item code 0B) set to 0001, the EXCT input was shorted.
2. Error Diagnosis
1 System
configuration
2 Indoor unit's
EEPROM
setting
3 Indoor EXCT
wiring
4 Indoor unit's
control
PC board
5
1-1 Is an O sensor being used?
2
Is the indoor EEPROM setting, item code 0B, on the indoor unit's
2-1
control PC board set to 0001?
3-1 Is the indoor EXCT socket (wire) shorted?
Is the alarm triggered if the indoor EXCT socket (wire) is
4-1
disconnected, and the power is reset?
4-2 Since there is no error, see what happens.
4-3 Indoor unit control PC board error
Alarm Occurred" from the indoor unit.
2
replace PC board.
5-48
Yes 3-1
No 2-1
After correcting the
Yes
setting, 3-1
No 4-1
Yes Correct wiring
No 4-1
Yes 4-3
No 4-2