E24 Communication Failure Between Outdoor Units (For Only W Multi - Panasonic 2WAY Multi Technical & Service Manual

E24 Communication Failure between Outdoor Units (for only W MULTI)

Error detection method
An Outdoor Communication Unit Failure is assumed when communications between outdoor units in the same
refrigerant system are not possible for 2 minutes.
• An outdoor unit address has not been properly assigned.
• Outdoor unit power is OFF.
Troubleshooting
1
Have outdoor unit addresses and outdoor unit and number of
1-1
Power
connected outdoor units been properly entered?
supply,
wiring
1-2 Have all outdoor units in the same system been turned on?
The indoor/outdoor operation wiring may not be connected between the indoor unit and
1-3 outdoor unit.
Check wiring connections on indoor/outdoor operation wiring.
IV–55
Yes 1-2
No Enter the data correctly.
Yes 1-3
No Turn power ON