Mitsubishi Electric Lossnay LGH-50RVS-E Handbook page 29

Error LED1 LED2
Code (green) (red)
4101 11 Overcurrent
blinks error of the
remote con-
troller terminal
4116 1 Abnormal rota-
blink tion of the sup-
ply fan motor
(Centrifugal fan
does not work,
insufficient
motor speed,
excessive
motor speed,
or rotation
detected when
operation is
stopped)
Symptom
Shorting between the remote control-
ler terminals
The group contains two or more Loss-
nay units with the same address.
M-NET transmission cable is con-
nected to the remote controller termi-
nal block (TM4 [1] [2]).
Three or more remote controllers are
connected.
Circuit board failure
Remote controller failure
Faulty connection of the supply
fan motor connector (CN10) on the
power circuit board
Faulty connection of the connectors
(CN14 - CN114 and CN19 - CN119)
between the control circuit board and
power circuit board
The model selection switch (SW6) is
not set correctly.
The temperature around the product
is high.
The motor and centrifugal fan are not
fixed securely.
Deformed centrifugal fan
Foreign objects around the centrifu-
gal fan
Fan motor failure
Circuit board failure
Cause
─ 29 ─
Corrective action
Check the remote controller wiring.
Set unique addresses to these
units.
Connect the M-NET transmission
cable to the M-NET transmission
cable terminal block (TB5 [A] [B]).
Up to two remote controllers can
be connected.
Replace the control circuit board.
Replace the remote controller.
Check the connector (CN10)
connection.
Check the connector connections
(CN14 - CN114 and CN19 - CN119).
Make the SW6 setting appropriate
for the model.
(See Chapter 7. (9) Setting status
record (page 47).)
Use the product at a temperature
of 40°C or lower.
Check the installation state of the
motor and centrifugal fan, and fix
them securely.
Replace the centrifugal fan.
Check the air course and around
the centrifugal fan, and remove
any foreign matter.
Replace the fan motor.
(See page 16.)
Replace the power circuit board.