Panasonic S-160PE1R5B Technical Data & Service Manual page 173

E06 Outdoor Unit Failed to Receive Serial Communication Signals from Indoor Unit
(When indoor unit(s) are connected)
1. Error Detection Method
It is judged an error when there is no transmission (reply) from the indoor unit to the outdoor unit for a period of three minutes.
The indoor unit is not turned on.
•
• The DISP pin of the indoor unit is shorted.
•
There is a short, open, wrong contact or grounding of the indoor/outdoor operation line.
•
The signal output control PC board (optional control PC board) inside the indoor unit has failed.
•
The thermistor inside the indoor unit is grounded.
2. Error Diagnosis
1 Indoor unit
1-1 Is the indoor unit powered off?
power
2 Indoor/
outdoor
Is the indoor/outdoor operation line shorted, opened,
2-1
operation
grounded or has a wrong contact?
line
3 Indoor
Are the DISP pin and CHK pin on the indoor unit control PC board
3-1
units
short-circuited?
control
Is the wireless remote controller connected to on the indoor unit's
PC board
3-2
control PC board?
Disconnect the connector mentioned above on the control PC board
of the indoor unit control PC board, and see whether the E06 goes off
3-3 after several minutes. (When doing so, if two remote controllers are
being used and the wireless remote controller is the main remote
controller, set the other remote controller as the main.)
3-4 Replace wireless remote control parts including wiring.
3-5 Indoor unit control PC board failure
•
For information on the procedures for replacing the indoor unit's control board, refer to the manual that is packaged with
the indoor unit control PCB.
Indoor Unit Control PCB
C3937-840-1Y
: S-160PE1R5B
FAN DRIVE
POWER LED EEPROM
CHK Pin T10
EXCT OPTION DISP JP001
Replace board.
ACXA73-3081*
: S-180PE3R5B, S-200PE3R5B, S-224PE3R5B
EEPROM (IC010)
EMG OC
RC
DISP (CN063)
FAN DRIVE (CN032)
5-9
Yes Power on.
No 2-1
Yes Correct the wiring.
No 3-1
Yes Remove the short.
No 3-2
Yes 3-3
No 3-5
Yes 3-4
No 3-5
POWER LED (D002)
EXCT (CN073)
JP001
EMG (CN044) OC (CN040)
T10 (CN061)
CHK (CN062)
5