3-70
Check code
Operation cause
[8E]
Outdoor unit connection
over limit
1. No. of connected outdoor units over limit
2. Connection error of communication cable between outdoor units
Check code
Operation cause
[8F]
Duplicated terminal outdoor addresses
1. Address set up of outdoor unit was duplicated.
2. Interface P.C. board error
YES
NO
YES
NO
No.of connectable outdoor units for
1 system is Max. 5 units.
Modify connection of communication cable.
Is No.of connected
outdoor units below 5 units?
Is communication
cable normally connected
between outdoor units?
Check interface P.C. board.
YES
YES
YES
NO
NO
It is normal.
Restart the operation.
Reset the power supply
and execute automatic address.
Is SW09 bit 1 of master
outdoor interface
P.C. board off? (*1)
Id [8F] detected?
Check interface P.C. board.
Turn off SW09 bit 1 on interface P.C. board
of master outdoor unit.
(
*
1) SW09 bit 1 on interface P.C. board of the master outdoor unit at exchanges set up method of outdoor
address.
Usually, the set up of outdoor address setting is automatic addressing (SW : OFF). If an incorrect set
up is performed, the compressor may be damaged.
Содержание MMC-P0151H
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