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When the cause of displayed address and
attribute is on the remote controller side.
When operating with multi refrigerant
system indoor units, the indoor units
transmits the signal to the remote
controller after the other refrigerant
system outdoor unit is turned off or
turned on again in 2 minutes, and
detects abnormality.
(The indoor unit detects when there is no
reply (ACK) on transmitting from the indoor
unit to the remote controller unit.)
Contact failure of remote controller or
indoor unit transmission line
Indoor unit transmission connector
(CN2M) disconnection
Sending/receiving signal circuit failure
in the indoor unit or remote controller
When the cause of displayed address and
attribute is on the fresh master side.
When synchronized operating with
other refrigerant system fresh master,
the indoor units transmits the signal to
the fresh master after the fresh master
and same refrigerant system outdoor
unit is turned off or turned on again in 2
minutes, and detects abnormality.
(The indoor unit detects when there is no
reply (ACK) on transmitting from the indoor
unit to the fresh master.)
Contact failure of fresh master or
indoor unit transmission line
Indoor unit or fresh master
transmission connector (CN2M)
disconnection
Sending/receiving signal circuit failure
in the indoor unit or fresh master
When the cause of displayed address and
attribute is on the lossnay side.
When the lossnay power supply is Off,
the indoor unit detects abnormality at
signal transmitting to the lossnay.
(The indoor unit detects when there is no
reply (ACK) on transmitting from the indoor
unit to the lossnay.)
6607
Display
Abnormal point and detecting method
Causes
Check points
When synchronized operating with
other refrigerant system lossnay, the
indoor units transmits the signal to the
lossnay after the lossnay and same
refrigerant system outdoor unit is
turned off or turned on again in 2
minutes, and detects abnormality
Contact failure of lossnay or indoor
unit transmission line
Indoor unit transmission connector
(CN2M) disconnection
Sending/receiving signal circuit failure
in the indoor unit or lossnay
When the controller of displayed address
and attribute is not recognized
Since the address switch was changed
with the current passed, the unit in the
last address does not exist.
Since the fresh master/lossnay
address are changed after
synchronized setting of fresh master /
lossnay by the remote controller,
abnormality is detected at transmitting
from the indoor unit.
From the previous page.