Fehlercodes: E20_ECOi_MF1

Alarm Code E16
Alarm meaning No indoor units at automatic address setting. 
Alarm conditions When automatic address setting was performed, no indoor units were recognized.
Probable cause
  1. The inter-unit control wiring from the outdoor unit to the indoor units has been cut.
  2. Serial connector 1 (CN001) is disconnected at the outdoor unit.
  3. The power is OFF at all indoor units in the system.
Check
  1. Check whether the inter-unit control wiring from the outdoor unit to the indoor units is cut.
  2. Check whether serial connector 1 (CN001) is disconnected at the outdoor unit.
  3. Check the power at the indoor units.
Correction
  1. Reconnect the inter-unit control wire from the outdoor unit to the indoor unit.
Example
Notes

Position of serial connector CN001 on 3-WAY System