Panasonic WH-ADF0309J3E5CM Service Manual page 243

24.2.5 E15 - Total Capacity of Indoor Unit is Too Low
Error Detection Method:

When indoor unit capacity is lower than outdoor unit.

CHK pin (CN062/CN071) and/or TEST pin (CN064) shorted when power is turned ON.
24.2.6 E16 - Total Capacity of Indoor Unit is Too High
Setting Related:

When indoor unit capacity higher than outdoor unit.

CHK pin (CN062/CN071) and/or TEST pin (CN064) shorted when power is turned ON.
CHK Pin
DISP Pin
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