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44
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1
(3) Troubleshooting 3: The remote controller operation is disabled or irregular.
Checklist for PZ-60DR-E or PZ-41SLB-E (Table 3-1)
Nothing displays on the
liquid crystal display
(LCD).
Transmission cable is connected to the
wrong terminal block.
No Lossnay unit is set to “Main”.
Power is not supplied to Lossnay.
Power that does not follow speci
fi
cations is used.
Transmission cable is not securely connected.
The length of the transmission cable wiring
is longer than speci
fi
ed (longer than 500 m).
Check the transmission cable con-
nection. (TM4 , for the transmis-
sion cable from the remote controller)
Turn off the main power supply and
set the Main/Sub selection switch
(SW1) (
fi
rst unit to “Main”, and sec-
ond and following units to “Sub”).
Check the power supply to Lossnay.
Check the power supply.
Check the transmission cable
connection.
Check the length of the trans-
mission cable wiring.
2
Starts or stops, or the
display changes, by
itself.
Multiple transmission cables are wired using
multi core cables.
Transmission cable and power supply cable
are too close.
Using suitable cables, wire the
transmission cables so that they
are separated from one another.
Wire the transmission cable at least 5
cm away from the power supply cable.
3
Displays an error code
that is not in the check
list.
LCD characters on the remote controller are
missing.
Poor return action of the remote controller buttons.
Replace the remote controller.
Replace the remote controller.
4
Cannot stop the Lossnay
with the remote control-
ler.
(“CENTRAL” is displayed)
Operation of the remote controller has been
prohibited by MELANS.
“INTERLOCK MODE” is set to “oUT” (exter-
nal input given priority).
Remote/local switching (CN32) is set to
“Remote.”
Check the setting of the
MELANS.
Check the interlock mode set-
ting. (Refer to page 19)
Check the remote/local switch-
ing (CN32). (Refer to page 22)
5
Cannot switch fan speed
with the remote control-
ler.
High/Low fan speed switching external input
(CN16) is ON.
When PZ-60DR-E is used, “POWER VENT
START” is set to “on” with the function selec-
tion of the remote controller.
When PZ-60DR-E is not used, the function
selection switch for “Power supply/exhaust
when operation starts” (SW2-3) on the
Lossnay circuit board is set to ON.
When PZ-60DR-E is used, the supply fan
speed setting and the exhaust fan speed
setting are set to “L” with the function selec-
tion of the remote controller.
When PZ-60DR-E is not used, the function selec-
tion switches for “Supply fan
fi
xed at Low speed”,
and “Exhaust fan
fi
xed at Low speed” (SW2-4,
SW2-5) on the Lossnay circuit board are set to ON.
Check the High/Low fan speed
switching input (CN16).
(Refer to page 20 and 21)
Check the setting of “power
supply/exhaust when operation
starts” with the PZ-60DR-E func-
tion selection. (Refer to page 28)
Check the function selection
switch (SW2-3).
(Refer to page 25)
Check the supply fan speed set-
ting and the exhaust fan speed
setting with the PZ-60DR-E func-
tion selection. (Refer to page 28)
Check the function selection
switches (SW2-4, SW2-5).
(Refer to page 25)
No.
Error
Cause
Action
6
The ventilation mode
cannot be switched with
the remote controller.
The bypass ventilation switching external
input (CN16) is set to ON.
Check the bypass ventilation
switching input (CN16).
(Refer to page 22)
