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12
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Signal cables to external devices (Table 1-3)
Check the following checkpoints when outputting the operation monitor and malfunction monitor.
No.
Checkpoint
Action
1 Do the signal cables meet regulations? (Type, diameter)
Use specified cables.
2 Is the signal cable wired at least 5 cm away from the power supply cable? Wire the signal cable at least 5 cm
away from the power supply cable.
3 Are multiple transmission or signal cables wired to the same power cable
duct?
Wire the transmission cables away
from the signal cables.
4 Are multiple signal cables wired with multi-core cables?
Use suitable cables to wire the
signal cables so that they are sepa-
rated from one another.
5 Are the signal cables securely connected to the terminals?
Connect them securely.
6 Are the signal cables connected to the specified terminal blocks?
Operation monitor: TM3
9
,
0
Malfunction monitor: TM3
7
,
8
Connect them to the specified
terminal blocks.
7 Are the output capacities of the operation monitor and malfunction moni-
tor within the ratings?
Output
Maximum rating
Minimum rating
Operation monitor
240 V AC, 1 A
24 V DC, 1 A
220 V AC, 100 mA
5 V DC, 100 mA
Malfunction monitor 240 V AC, 1 A
24 V DC, 1 A
220 V AC, 100 mA
5 V DC, 100 mA
Use them within the ratings.
State of machine Remote controller
Cause
Remedy
Does not operate. • Remote control-
ler display does
not appear.
• The power dis-
play “
” does
not appear on
the remote con-
troller. (When
PAR-21MAA is used)
Power is not supplied to Fresh
Master, or power that does not follow
specifications is used.
Check the power supply to Fresh
Master. (Refer to Table 1-1)
Is there a connection of 3 or more re-
mote controllers, or 16 or more Fresh
Master units?
Check the number of units con-
nected.
The remote controller is connected to
TM2
A
,
B
(terminal block for M-NET
transmission cable).
Connect the transmission cable
to TM2
1
,
2
.
The power display
“
” does not
appear on the
remote controller
when power is
supplied to the
system. (When
PAR-F27MEA is
used)
The power of the outdoor unit is not
turned on.
ME remote controller is powered by
the outdoor unit. Turn on the power
of the outdoor unit.
Power is not supplied to the trans-
mission cable that connects indoor
units and an outdoor unit.
Check the settings of the outdoor
unit. See the City Multi databook for
details.
Faulty connection of the M-NET
transmission cable
See Table 1-2.
The number of Fresh Masters, indoor
units, or remote controllers connect-
ed to the transmission cable exceeds
the power supply capacity of the
outdoor unit.
Connect Fresh Masters, indoor units,
or remote controllers within the pow-
er supply capacity of the outdoor unit.
See the City Multi databook for de-
tails.
(Table 2)