Panasonic S-36PU1E5A Service Manual page 567

E03 Error in Indoor Unit Receiving Signal from Remote Controller (central)
(When indoor unit(s) are connected)
1. Error Detection Method
It is judged an error when there is no communication from any remote controller (collectively) in a 3-minute period or if there
is no communication from the central device in a 15-minute period.
• When there was once communication, but during use the remote control wiring is opened or miswired.
•
The line to the central control unit for indoor/outdoor operations is opened.
•
Settings are made only for sub remote controller.
•
The power to the central control unit is not on and remote controllers are not being used (or the indoor/outdoor operations
line to the central control unit is opened).
• When remote controller are not being used, only the sub remote controller is set up.
2. Error Diagnosis
1 Central
1-1 Is the central control unit connected?
control unit
1-2 Is the central control unit's powered off?
Are all the Main/Sub switches on the connected central control unit
1-3
set to Sub?
Of the central control units that are connected, set only the uppermost central control unit to
1-4 Main and the others to Sub. The order from top to bottom is communication adaptor
system controller
Is the indoor/outdoor operations line connected to the central
1-5
control unit opened?
2 Remote
2-1 Is the indoor unit under group control?
controller
Are the wires 1 (white) & 2 (black) to the remote control group
2-2
opened, have wrong contact or grounded?
3 Indoor
Is the wireless remote controller connected to on the indoor unit's
3-1
unit
control PC board?
control
Disconnect the connector mentioned above on the control PC board
PC board
of the indoor unit control PC board, and see whether the E03 goes off
3-2 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.)
3-3 Replace wireless remote control parts including wiring.
Is there a short, miswiring, open, wrong contact or grounding
3-4
in the remote control's wiring?
•
Regarding the remote controller check, refer to the Reference Materials.
• For information on the procedures for replacing the nonvolatile memory (EEPROM) of the indoor unit and/or replacing the
indoor unit's control board, refer to the manual that is packaged with the indoor unit service board.
SW1
ON Side
ON
OFF Side
1 2 3 4 5 6 7
7
Central Control Main/Sub Switch
Main: OFF Side
Sub: ON Side
System Controller
ON/OFF controller.
ON Side
OFF Side
8
ON
1 2 3 4 5 6 7 8
4
Central Control Main/Sub Switch
Main: OFF Side
Sub: ON Side
ON/OFF Controller
5-11
Yes 1-2
No 2-1
Yes Power on
No 1-3
Yes 1-4
No 1-5
Yes Correct the setting
No 2-1
2-2
Yes
No 3-1
Yes Correct the setting
No 3-1
Yes 3-2
No 3-4
Yes 3-3
No 3-4
Yes Correct the wiring
Replace the indoor
No
unit control board
5