Is E43 dispalyed?
Are there
any indoor units which
is not expected to exsist in
this signal
line?
Save data for 30 minutes before stopping in Mente PC
NO
NO
NO
Does
the number of
indoor units connected
and/or total capacity
exceed limitation?
Check the resistance
between A and B of signal
line as well.
Check the connected number
of indoor units with 7-segment
display code 40 or Mente PC
with reference to the utilities
drawing. (Check not only one
system, but also other systems)
YES
YES
YES
General checking of indoor/outdoor unit addresses by means of:
� Outdoor unit: Mente PC, 7-Segemnt display C40 and
rorary switch (SW1, 2)
� Indoor unit: Remote controller, rotary switch
(SW1, 2, 3, 4) and SW5-2
* It is recommended to use means other than the rotary switch,
which could be defective.
Reset the power.
Check and save the data of
operating condition.
Test run.
No action is taken because
it is judged that the power
reset was not done after
changing address.
Check indoor unit
addresses and correct.
In order to operate the
unit tentatively, even if
total capacity of connected
indoor units exceeds 150%
of outdoor unit capacity,
turn ON the dip switch
SW5-4 on outdoor control
PCB.
(However since this
tentative solution could
cause trouble, be sure
to correct it as soon as
possible)
Signal wire may be
connected to other systems.
Separate the signal wire.
Correct addresses.
(Either one of addresses is
wrong.)
If the address corrected
with rotary switch is still
wrong, replace control PCB
(Defective rotary switch)
* Before replacement,
please confirm whether
the rotary switch for
address setting is not
damaged. (It was
experienced that No. 5
on rotary switch was not
recognized.)
2. Error detection method
When the number of connected
indoor units exceeds the
limitation.
When the total capacity of
connected indoor units exceeds
the limitation.
(When the total capacity of
connected indoor units exceeds
150% of outdoor unit capacity)
3
.
Condition of error displayed
• Excessive number of
connected indoor units
• Excessive total capacity of
connected indoor units
• The total capacity of
connected indoor units
exceeds 150% of outdoor unit
capacity
4. Presumable cause
• Mistake in setting of indoor/
outdoor unit addresses
• Mistake in signal wire
connection
Note: After completing the above procedure, reset the power and confirm that the error display does not recur. Unless the power
is reset for both indoor unit and outdoor unit, the set addresses will not be confirmed.
*1 E43-1/1 time flash: Excessive number of indoor units connected, E43-2/2 times flash:Excessive capacity of connection
Caution:
Address will not be confirmed,
unless the power is reset after
changing addess.
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