Panasonic U-4LE1R8 Service Manual page 61

3. Mini VRF System Alarm Codes
E16 Auto-Address Alarm (too many units)
1. Error Detection Method
It is judged an error when there are too many indoor units that reply to communications and this is determined from the
number of indoor units specified with the outdoor unit. (This is detected even when auto address setting is not used.)
The actual number of indoor units is more than that specified at the outdoor unit.
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2. Error Diagnosis
1 Auto
Address 1-1 Conduct checks prior to auto address setting.
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Mini VRF SYSTEM
Trouble Diagnosis
3