Mitsubishi Electric LGF-100GX-E Handbook page 47

( 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 The fan will 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 specifi cations 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 specifi ed.
12 V DC, 24 V DC : Longer than limitations
Uncharged a-contact : Longer than 500 m
Mr. Slim signal : Longer than 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
switches ( 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.
output setting switch ( SW2-
The TM4 ,
8 ) or the TM3
, output setting switch
( SW5-6 ) on the Lossnay circuit board is set
to ON.
─ 47 ─
of the external device
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 18 ) .
Check the external device.
Check the wiring length of the
signal cable.
Check the delay operation set-
ting of PZ-60DR-E or PZ41SLB-
E, and the function selection
switch ( SW5-1 ) on the Lossnay
circuit board. ( Refer to page 19 )
Check the interlock mode set-
ting of PZ-60DR-E, PZ41SLB-
E, or the function selection
switches ( SW5-7, SW5-8 ) on
the Lossnay circuit board. ( Refer
to page 19 )
Connect the external con-
trol input 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 23 )
When SW2-8 or SW5-6 is ON,
the fan will stop 3 minutes after
OFF operation of the remote
controller. ( Refer to page 14 )