Panasonic CS-A24BB4P Service Manual page 129

Nothing abnormal appears on the remote control display, and
operation of indoor unit. No. 1 and indoor unit No. 2 is possible. /
However, indoor unit No. 3 cannot be operated.
- Remedy
1. Turn off the main power. /
2. Connect the disconnected wires correctly. /
3. Turn on the main power. /
4. After 1 minute, start the operation using the remote control. /
(Indoor units' operation will start according to the remote control
setting.) / (Outdoor units' operation will start after 3-5 minutes.) /
If slave units do not operate even after the wiring has been
corrected (automatic addressing is not possible)
1. Check that DIP switches 1 to 4 and DIP switch 8 are all set to
OFF, and then stop operation. /
2. Press the "AIRSWING AUTO", "OPERATION" and "A/C No."
buttons simultaneously. / The addresses will be momentarily
reset, and then automatic address setting will be carried out once
more.
/ The above procedure cannot be used to carry out automatic
address resetting of twin/triple control. / / (Note on automatic
address setting) / The printed circuit boards automatically store
the connected system configuration when power is supplied. As a
result, once the power has been turned on for these printed circuit
boards, the units can not be changed about within the system,
even if the units are of the same model and have same capacity.
1. Automatic address setting (don't need to set dip-switch) / If the
wiring is connected properly as above example, the address is set
automatically by the main power supply. An indoor unit with
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