Panasonic S-36PU1E5A Technical Data & Service Manual page 547

E15 Automatic Address Alarm (The total capacity of indoor units is too low.)
1. Error Detection Method
Connecting indoor unit
It is judged an error the total capacity of indoor units replied by communication is lower than that of outdoor 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.
2. Error Diagnosis
1 Power
1-1 Is the indoor unit powered off?
Source
2 Indoor/
2-1
Is the indoor/outdoor control line opened or shorted?
outdoor
control line
Was a high voltage (over AC200V) applied in the indoor/outdoor
2-2
operations line circuit?
3 No. of
Was the number of indoor units changed after auto address setting
3-1
Indoor
finished?
Units
3-2 Conduct checks prior to auto address setting.
4 Indoor
Are the CHK pin and TEST pin on the indoor unit control board
4-1
unit
short-circuited?
control
Is the wireless remote controller connected to on the indoor unit's
PC board
4-2
control PC board?
Disconnect the connector mentioned above on the control PC board
of the indoor unit control PC board and see whether the E15 goes off
4-3 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.)
4-4 Replace wireless remote control parts including wiring.
4-5 Is the LED blinking on the indoor unit's control PC board?
The nonvolatile memory (EEPROM) on the indoor unit's control board is either not installed,
4-6 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.
5 Outdoor
unit control 5-1 Check all items under the section "Check Prior to Auto Address Setting".
PC board
•
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.
•
For information on the remote control's detailed settings, refer to the Reference Materials.
A747931 : 4-way Cassette Type
Ceiling Type (T2 type)
A747938 : Duct Type
EEPROM
TEST pin
CHK pin
OPTION
RC
5-25
Yes Power on
No 2-1
Yes Correct the wiring
No 2-2
Yes 3-2
No 3-1
Yes 3-2
No 4-1
Yes Remove the short
No 4-2
Yes 4-3
No 4-5
Yes 4-4
No 4-5
Yes 4-6
No 5-1
TEST pin
CHK pin
EEPROM
OPTION
RC
5