Daikin VRVII Manual page 306

Troubleshooting by Indication on the Remote Controller
Troubleshooting
Caution
Check the LED lamps for
"Check 3" corresponding
to the error code " U7 " and
for Check 4 in the
monitor mode.
Check 3
Check 3
Check 3
Check 3
Check 3
Check 3
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
Check 4
Check 4
Check 4
Check 4
Check 4
Check 4
A
Go on to the
Diagnosis Flow
1 (Defective
transmission
caused when
the external
control adaptor
for outdoor unit
is mounted)
Go on to the
Diagnosis Flow
2 (Transmission
alarm given
when the
external control
adaptor for
outdoor unit is
mounted)
Go on to the
Diagnosis Flow
3 (Abnormal
transmission
between the
master unit and
the slave unit 1)
Go on to the
Diagnosis Flow
4 (Abnormal
transmission
between the
master unit and
the slave unit 2)
Go on to the
Diagnosis Flow
5 (Multi-
connection
units)
Go on to the
Diagnosis Flow
6 (Erroneous
manual address
settings of the
slave units 1
and 2)
301