Panasonic S-50PY2E5A - Page 581

5-25
5
E15 Automatic Address Alarm (The total capacity of indoor units is too low.)
Error Detection Method
It is judged an error the total capacity of indoor units replied by communication is lower than that of outdoor unit.
Connecting indoor unit
The total capacity of indoor units is lower than that of outdoor unit.
•
Some indoor unit(s) are connected but power is not turned on.
•
The CHK pin (CN062/CN071) and/or TEST pin (CN064) of the indoor unit is shorted when its power is turned on.
•
High voltage was applied (over AC200V) in the indoor/outdoor operations line circuit.
•
1.
Is the indoor unit powered off?1-1
Was the number of indoor units changed after auto address setting
finished?
3-1
Conduct checks prior to auto address setting. 3-2
3-2
3-1
Yes
No
Power on
2-1
Yes
No
Was a high voltage (over AC200V) applied in the indoor/outdoor
operations line circuit?
2-2
2
Is the indoor/outdoor control line opened or shorted?
2-1
Correct the wiring
2-2
Yes
No
Indoor/
outdoor
control line
3 No. of
Indoor
Units
1 Power
Source
Error Diagnosis2.
3-2
4-1
Yes
No
Disconnect the connector mentioned above on the control PC board
of the indoor unit control PC board and see whether the E15 goes off
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.)
Replace wireless remote control parts including wiring.
4-3
4-4
Is the LED blinking on the indoor unit’s control PC board?4-5
Check all items under the section “Check Prior to Auto Address Setting”. 5-1
The nonvolatile memory (EEPROM) on the indoor unit’s control board is either not installed,
improperly installed or the nonvolatile memory is faulty. Correct this or after replacing the
nonvolatile memory, write model data to it in the remote control detailed settings mode.
4-6
Are the CHK pin and TEST pin on the indoor unit control board
short-circuited?
4-1
Is the wireless remote controller connected to on the indoor unit’s
control PC board?
4-2
4-4
4-5
Yes
No
Remove the short
4-2
Yes
No
4-3
4-5
Yes
No
4 Indoor
unit
control
PC board
5 Outdoor
unit control
PC board
4-6
5-1
Yes
No
For information on the remote control’s detailed settings, refer to the Reference Materials.
•
For information on the procedures for replacing the nonvolatile memory (EEPROM) of the indoor unit, refer to the manual
that is packaged with the indoor unit service board.
•
A747938 : Duct TypeA747931 : 4-Way Cassette Type
Ceiling Type (T2 type)
TEST pin
RC
OPTION
CHK pin
EEPROM
EEPROM
TEST pin
RC
OPTION
CHK pin
A747336 : 4-Way Cassette 60 x 60 Type
EEPROM
TEST pin
RC
OPTION
CHK pin
SM830231-02Single欧州.indb25SM830231-02Single欧州.indb25 2014/09/1115:44:082014/09/1115:44:08