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Possible causes
Other I/U errors
(Group follower I/U error)
When an error occurs with other units in the group
[P31]
(New code)
When header unit detects E03, L03, L07 or L08 during group operation, “P31” is indicated on follower units in the group and
their operation stops. No code or alarm log is displayed on the R/C.
Troubleshooting (Continued)
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