Panasonic S-36PU1E5 Technical Data & Service Manual page 342

E15 Automatic address alarm (capacity too low)
1. Error Detection Method
Connecting indoor unit
It is judged an error the total capacity of indoor units replied by communication is fewer than that of outdoor units.
(This is detected even when auto address setting is not used.)
• The total capacity of indoor units is fewer than that of outdoor units.
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
Source
2 Indoor/
2-1
outdoor
control line
2-2
3 No. of
3-1
Indoor
Units
3-2
4 Indoor
4-1
unit
5
control
PC board
4-2
4-3
4-4
4-5
4-6
5 Outdoor
unit control 5-1
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.
A746802 : 4-way Cassette Type
EEPROM TEST pin
OPTION
Is the indoor unit powered off?
Is the indoor/outdoor control line opened or shorted?
Was a high voltage (over AC200V) applied in the indoor/outdoor
operations line circuit?
Was the number of indoor units changed after auto address setting
finished?
Conduct checks prior to auto address setting.
Are the CHK pin and TEST pin on the indoor unit control board
short-circuited?
Is the wireless remote controller connected to on the indoor unit's
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
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.
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,
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.
Set the number of the indoor unit setting at No.10 on the outdoor unit's control PC board.
And compare the status of the indoor unit's connection setting at No.9 (indoor unit check).
Then, make a detailed examination of any absent indoor units.
RC
CHK pin
A746803 : Duct Type
EEPROM TEST pin
OPTION
5-22
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
RC
CHK pin