Mitsubishi Electric LGH-F300RVX-E Handbook page 26

[3] System controller
No. Problem
1 The group of
Lossnay cannot be
set with the system
controller.
2 Some Lossnay units
in the group do not
operate.
3 The screen display
of the system con-
troller changes by
itself. Even if you
press the buttons,
the screen returns to
the original screen
right away.
Factor
The power of the Lossnay unit is
not ON.
M-NET transmission cable is
connected to the remote controller
terminal block (TM4 [1] [2]).
Lossnay address setting is incor-
rect.
Power is not supplied to the
M-NET transmission cable.
The wiring length of the M-NET
transmission cable is longer than
specified. (Longer than 219 yd.
(200 m) from the power supply
unit, or longer than 547 yd. (500
m) in total length)
The power of the Lossnay unit is
not ON.
Faulty connection of the M-NET
transmission cable
The remote controller transmis-
sion cables are not correctly
connected between the terminals
(TM4 [1] [2]) of the Lossnay units
in the group.
The Lossnay unit is operating in
the protective mode (intermittent
operation).
Faulty connection of the remote
controller transmission cable
When PZ-61DR-E is used, the
group wiring and the group setting
of the system controller do not
match.
The Lossnay unit, which is set as
the main Lossnay (SW5-10 ON),
is not set to the address with the
smallest number in the group.
Check the items described in (1) [1].
Connect the M-NET transmission cable to the
M-NET transmission cable terminal block (TB5
[A] [B]).
Check the address setting switches (SA1 and
SA2) on the Lossnay circuit board.
If the system is configured with only Lossnay
units, connect the power supply unit.
(See the Lossnay technical manual.)
Check the wiring length of the transmission
cable.
(See the Lossnay technical manual.)
Check the items described in (1) [1].
Check the items described in (1) [2].
Connect the remote controller transmission
cables correctly between the terminals (TM4 [1]
[2]) of the Lossnay units in the group.
For details, see the Lossnay technical manual.
Check the items described in (1) [2].
Check the group wiring or the group setting of
the system controller.
Set the Lossnay unit, which is set as the main
Lossnay (SW5-10 ON) to the address with the
smallest number.
(See the Lossnay technical manual.)
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Corrective action