E15 Automatic Address Alarm (The total capacity of indoor units is too low.)
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.
1.
Is the indoor unit powered off?1-1
3-1
Was the number of indoor units changed after auto address setting
finished?
Conduct checks prior to auto address setting. 3-2
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.
3-2Yes
3-1No
Power on
2-1
Yes
No
2
2-2
Was a high voltage (over AC200V) applied in the indoor/outdoor
operations line circuit?
Is the indoor/outdoor control line opened or shorted?
Correct the wiring
2-1
Yes
2-2No
Indoor/
outdoor
control line
3 No. of
Indoor
Units
1 Power
Source
2. Error Diagnosis
3-2Yes
4-1No
Replace wireless remote control parts including wiring.
4-4
Is the LED blinking on the indoor unit’s control PC board?
4-5
4-6
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.)
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.
4-7
Are the CHK Pin and TEST Pin on the indoor unit control board
short-circuited?
Return the detailed setting item to the factory setting.
4-2
4-1
Is the wireless remote controller connected to on the indoor unit’s
control PC board?
4-3
4-5Yes
4-6No
Remove the short
4-3
Yes
No
4-2
Correct the setting
Run the auto address
Yes
No
4-4Yes
4-6No
4 Indoor
unit
control
PC board
unit control
5 Outdoor
PC board
4-7Yes
5-1No
•
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.
Factory setting
Item code Item Value
11 0
99
99
99
Indoor unit capacity
Indoor unit address
Group conrol address
System address
12
13
14
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