Mitsubishi Electric LOSSNAY LGH-F300RX5-E Handbook page 52

( 4 ) Troubleshooting 4: The Lossnay operation is disabled or irregular.
Lossnay checklist ( Table 4 )
No. Error
1 The fan does not oper-
ate.
The fan does not operate
normally.
2 Interlocked operation
with external devices
( air conditioners ) does
not occur.
3 Fan does not stop.
Cause
Connectors for the fan or connectors for the
Lossnay circuit board section are not cor-
rectly connected.
Power is not supplied to the Lossnay, or power
that does not follow specifications is used.
When M-NET is used, Lossnay group set-
ting is not performed. ( LED2 lights )
The type of external signal does not match
the connected terminal block ( charged,
uncharged, Mr. Slim signal ) .
The type of external signal does not match
the pulse input setting ( level signal, pulse
signal ) .
The external device signal is not being input.
The external device and signal cable wiring
is longer than specified.
12 V DC, 24 V DC: Longer than limitations of
external device
Uncharged a-contact: Longer than 547 yd. (500 m)
Mr. Slim signal: Longer than 547 yd. (500 m)
The Delay operation is set with the function
selection of PZ-60DR-E or PZ-41SLB-E, or
the function selection switch ( SW5-1 ) on the
Lossnay circuit board.
The ON Interlocked or OFF Interlocked is set
with the function selection of PZ-60DR-E or
PZ-41SLB-E, or the function selection switch-
es ( SW5-7, SW5-8 ) on the Lossnay circuit
board.
When multiple Lossnay units are used, the
external control input signal is connected to
a " Sub " Lossnay.
In a group of multiple Lossnay units with
M-NET, the external control input signal is
connected to a Lossnay unit other than the
one with the smallest address.
There is a communication error with the
remote controller or MELANS.
Trial operation switch ( SW2-1 ) on the
Lossnay circuit board is set to ON.
The TM4 9, 0 output setting switch ( SW2-
8 ) or the TM3 6, 7 output setting switch
( SW5-6 ) on the Lossnay circuit board is set
to ON.
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Action
Check the lead wire connectors
and the Lossnay circuit board
section connectors.
Check the power supply.
Check the Lossnay address and
the group setting. ( LED2 lights
when not using M-NET. This is
not an error. )
Check the external signal type
and the external control input
terminal ( TM2 ) connection.
<When using PZ-60DR-E>
Check the external signal type and
the pulse input setting from the
function selection.
<When not using PZ-60DR-E>
Check the external signal type
and the pulse input setting switch
( SW2-2 ) on the Lossnay circuit
board. ( Refer to page 23 ) .
Check the external device.
Check the wiring length of the
signal cable.
Check the delay operation setting
of PZ-60DR-E or PZ-41SLB-E,
and the function selection switch
( SW5-1 ) on the Lossnay circuit
board. ( Refer to page 24 )
Check the interlock mode setting
of PZ-60DR-E, PZ-41SLB-E, or
the function selection switches
( SW5-7, SW5-8 ) on the Lossnay
circuit board. ( Refer to page 24 )
Connect the external control in-
put signal to the " Main " Lossnay.
Connect the external control
input signal to the Lossnay unit
with the smallest address in the
group.
Check the remote controller or
MELANS.
Check the trial operation switch
( SW2-1 ) . ( Refer to page 28 )
When SW2-8 or SW5-6 is ON,
the fan will stop 3 minutes after
OFF operation of the remote con-
troller. ( Refer to page 19 )