Mitsubishi Electric LGH-250RVXT-E Handbook page 27

Error LED1 LED2
Code (green) (red)
4101 11 Overcurrent
blinks error of the re-
mote controller
terminal
4116 1 Abnormal
blink rotation of the
supply fan mo-
tor (inside)
(Centrifugal fan
does not work,
insufficient
motor speed,
excessive
motor speed,
or rotation
detected when
operation is
stopped)
Symptom
Shorting between remote controller
terminals
In one group, two or more Lossnay
units are set as the main Lossnay
(SW5-10 ON).
M-NET transmission cable is con-
nected to the remote controller termi-
nal block (TM4 12).
Three or more remote controllers are
connected.
Circuit board failure
Remote controller failure
<For LGH-150/200RVXT-E>
Faulty connection of the supply fan
motor (inside) connector (CN10) on
the Power circuit board 1
<For LGH-250RVXT-E>
Faulty connection of the supply fan
motor (inside) connector (CN10) on
the Bottom right power circuit board
<For LGH-150/200RVXT-E>
Faulty connection of the connectors
(CN18 - CN118 and CN19 - CN119)
between the control circuit board and
Power circuit board 1
<For LGH-250RVXT-E>
Faulty connection of the connectors
(CN18/CN19 - CN121) between the
control circuit board and Bottom right
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
─ 27 ─
Corrective action
Check the remote controller wiring.
Only one Lossnay unit can be set
as the main Lossnay in one group.
(See the Lossnay technical manual.)
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 circuit board.
Replace the remote controller.
Check the connector (CN10) con-
nection.
Check the connector (CN10) con-
nection.
Check the connector connections
(CN18 - CN118 and CN19 - CN119).
Check the connector connections
(CN18/CN19 - CN121).
Make the SW6 setting appropriate
for the model. (See chapter 7. (11)
Setting status record (page 51).)
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 motor. (See page 16.)
Replace the circuit board.