Panasonic R410A - E07 Outdoor Unit Sending Failure to Indoor Unit

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E07 Outdoor unit sending failure to indoor unit
Error Detection Method
Error Diagnosis
It is judged an error when a unit itself cannot receive (discrepancy) a signal within a 3-minute period that it had sent.
Outdoor main PC board error
The setting of the terminal resistor select switch on the outdoor main PC board is set incorrectly.
•
•
For information on the procedures for replacing the outdoor main PC board, refer to the manual that is packaged with the
service board.
•
1.
2.
Is the terminal resistor select switch on the outdoor main PC board
set to OPEN?
Is the indoor/outdoor operation line opened or shorted?
1-3
1-4
Replace the outdoor unit main PC board.1-5
Is the indoor/outdoor operation line connected to more than one
outdoor unit? (Network wired?)
1-1
Is the SHORT on the terminal resistor switch on the outdoor main
PC board set to one unit, and the others are OPEN?
1-2
Make the SHORT
setting
1-4
Yes
No
1-2
1-3
Yes
No
1-4
Set the SHORT to
one unit only
Yes
No
1 Outdoor
unit
control
PC board
Correct the wiring
1-5
Yes
No
TERMINAL EEPROM EEPROMTERMINAL
TERMINAL EEPROM TERMINAL EEPROM
A746894 : (U-60PE1R5, U-71PE1R5)
(for single-phase outdoor unit PCB)
A746844 : (U-100PE1R5)
(for single-phase outdoor unit PCB)
A746845 : (U-125PE1R5, U-140PE1R5)
(for single-phase outdoor unit PCB)
A746967 : (U-100PE1R8, U-125PE1R8, U-140PE1R8)
(for 3-phase outdoor unit PCB)
Sec5.indd17Sec5.indd17 2012/03/0920:43:592012/03/0920:43:59